CN109578800A

CN109578800A - Oversize high pressure gas cylinder aluminium alloy inner container and its manufacturing method

Info

Publication number: CN109578800A
Application number: CN201811601577.2A
Authority: CN
Inventors: 王东坡; 马世成; 汪宇羿; 赵文龙; 张月倩; 孙昂
Original assignee: Aerospace Research Institute of Materials and Processing Technology
Current assignee: Aerospace Research Institute of Materials and Processing Technology
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2019-04-05
Anticipated expiration: 2038-12-26
Also published as: CN109578800B

Abstract

The present invention provides a kind of oversize high pressure gas cylinder aluminium alloy inner container and its manufacturing method, including direct tube section, and is located at the A end socket and B end socket at direct tube section both ends, and A bottleneck and B bottleneck are located on A end socket and B end socket；The length of oversize high pressure gas cylinder aluminium alloy inner container is 5-13m, and the nominal outside diameter of direct tube section is Φ 300- Φ 850mm, and the rated pressure of high pressure gas cylinder is 20-30Mpa.The processing method that the present invention totally uses spinning, product integrated welding seam-free, preparation process is simple, easy to operate, and low energy consumption, and pollution is small, and the loss of entire manufacturing process chinese raw materials is fewer, has saved the cost of raw material.The oversize high pressure gas cylinder aluminium alloy inner container that the manufacturing method of the present invention processes has the characteristics that wall is thin, light weight；Its interior material structure even compact, integral strength excellent effect have high pressure resistant property, have great importance to the manufacture of high pressure gas cylinder.

Description

Oversize high pressure gas cylinder aluminium alloy inner container and its manufacturing method

Technical field

The invention belongs to high-pressure bottle technical fields, and in particular to a kind of oversize high pressure gas cylinder aluminium alloy inner container and Its manufacturing method.

Background technique

High pressure gas cylinder is widely used for the national economy such as industrial and mineral production, building, traffic, ocean, aviation, medical treatment, military affairs Various industries.Capacity, bottle wall thickness and the manufacture craft and material of high pressure gas cylinder can all influence the performance of high pressure gas cylinder.Such as day Right gas and hydrogen are given priority to and widely used clean energy resource in a kind of world wide.20-30MP high pressure gas is used at present Bottle storage and transportation and use compressed natural gas (CNG), compression hydrogen and other compression industrial gasses are that these gases are conveyed from main line To the major way with gas point, gas station and other places.

Currently, aluminum alloy inner container carbon fiber winds high pressure gas cylinder with many merits entirely, gradually replace traditional steel gas Bottle, becomes the main product of world today's high pressure gas cylinder.Its advantage is as follows:

(1) substantially loss of weight；Using the gas cylinder of aluminium alloy inner container composite winding, material thickness is only steel cylinder under equal performance 50%-70%, and density is lower, thus its weight is only the 35%-40% of traditional steel cylinder.

(2) fail-safety is good；Aluminum alloy inner container carbon fiber full wrapped cylinders are compound using aluminium alloy inner container and carbon fiber Material reinforcement, it is every square centimeter on fiber it is up to ten thousand up to thousands of, when gas cylinder overloads and a small amount of fibrous fracture occurs, carry Lotus can distribute rapidly on unbroken fiber, this can make gas cylinder that will not lose carrying within short-term or even significant period of time Ability greatly improves safety.

(3) damping property is good；Fiber In Composite Material and resin matrix interface have damping capaicty, and shock damping is good, acoustic resistive It is also very high to shake fatigue behaviour.

(4) compared with the complicated procedures of forming that seamless steel gas cylinder needs, pressure stochastic distribution is more flexible, is easy transformation, work Sequence is more simplified, also automation easy to accomplish, and energy consumption is well below the production process of steel gas cylinder.

For example, the aluminum alloy inner container carbon fiber full wrapped cylinders of outer diameter Φ 300- Φ 850mm, length 5-13m are mainly used as The big capacity high pressures such as large-scale natural natural gas transportation tank car storage and transportation gas cylinder, gas station storage and transportation gas cylinder, CNG cargo ship storage and transportation gas cylinder Storage and transportation gas cylinder.

But limited by material production and technical capability, China also fails to the aluminium alloy that production length is greater than 5m at present Inner container carbon fiber full wrapped cylinders, key problem are exactly that aluminium alloy inner container can not manufacture.

In the above context, in order to greatly improve the storage and transportation ability of natural gas, hydrogen, industrial high-purity gas tank car, in order to Further grasp the key technology and production of the storage and transportation apparatus such as large-scale compression natural gas, hydrogen and the air mixture with autonomous property right Product, urgent need exploitation have that diameter is big, length is long, the high pressure gas cylinder aluminium alloy inner container of light weight, the characteristics such as highly reliable Product.

Summary of the invention

It is an object of the invention to propose a kind of high pressure gas cylinder aluminium alloy inner container and its manufacturing method.At least to solve at present The problem of high pressure gas cylinder volume is small, and quality is overweight, poor reliability.

To achieve the goals above, the invention provides the following technical scheme:

A kind of oversize high pressure gas cylinder aluminium alloy inner container, oversize high pressure gas cylinder use aluminium alloy inner container as winding For the liner of gas cylinder for storing compressed gas, the oversize high pressure gas cylinder is both ends closing in formed head with aluminium alloy inner container And the integrated seamless structure of bottleneck, including A bottleneck, A end socket, direct tube section, B end socket and B bottleneck, the A end socket and B end socket point Not Wei Yu the direct tube section both ends, the A bottleneck and B bottleneck are located on the A end socket and B end socket；The super large ruler The length of very little high pressure gas cylinder aluminium alloy inner container is 5-13m, and the nominal outside diameter of the direct tube section is Φ 300- Φ 850mm, described The rated pressure of high pressure gas cylinder is 20-30Mpa.

Oversize high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the wall thickness of the direct tube section is 3-10mm, The whole straightness of the direct tube section is not more than 0.5mm/m；

Preferably, the tolerance of the wall thickness of the direct tube section is less than or equal to ± 0.15mm；

More preferably, the direct tube section arbitrary line fragment position part straightness is not more than 0.5mm/300mm；

More preferably, the circularity of the direct tube section any position is not more than 0.5mm；

More preferably, the inside surface roughness of the direct tube section is less than Ra1.6 μm, the outer surface roughness of the direct tube section Less than Ra3.2 μm.

Oversize high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the structure type of the end socket is ellipsoid Type end socket, disk bottom or dome-type end socket, the structure type of the A end socket is identical as the structure type of the B end socket, described The thickness of end socket is thickened from edge to the uniform gradual change in bottleneck position；

Preferably, the thickness of the end socket is thickened from the 5-8mm at edge to the uniform gradual change of the 10-15mm at bottleneck position；

More preferably, the length of the bottleneck is 40mm, the outer diameter of the bottleneck is 50mm, and the internal diameter of the bottleneck is 28mm。

The manufacturing method of described in any item oversize high pressure gas cylinder aluminium alloy inner containers as above, it is preferable that the manufacture Method includes the following steps:

S1, aluminium alloy inner container spinning control is standby, using ultra-long barrel spinning with tension equipment to the direct tube section of seamless tubular goods into The processing of row multi-pass strength outward turning pressing formation, obtains aluminium alloy inner container spinning pipe；The step specifically comprises the following steps:

S1a, the rotary press modelling of aluminium alloy inner container spinning pipe direct tube section, uses ultra-long barrel spinning with tension equipment with tension three Spinning roller mistake carries out multiple spinning process to seamless tubular goods away from dextrorotation spin-on process, obtains spinning part A；Floating core die is used when spinning Carry out spinning secondary process；In spinning manufacturing process, one end using tractive force traction seamless tubular goods extends outwardly, tractive force Lead is opposite with the flow direction of material；The tractive force is constant force, the deformation velocity of the adaptive material of hauling speed； Seamless tubular goods is axially fixed on traction mechanism by traction one end, it is ensured that by the radial free of traction one end；It is filled using positioning Set and the radial direction of the other end of seamless tubular goods be fixed and supported, it is ensured that the other end of seamless tubular goods it is axially free；

S1b, the Processing to length of aluminium alloy inner container spinning pipe determine spinning part A obtained in step S1a using sawing machine Long processing, obtains aluminium alloy inner container spinning pipe；

S1c, the cleaning of aluminium alloy inner container spinning pipe, using cleaning machine to aluminium alloy inner container spinning obtained in step S1b Pipe is cleaned；

S1d, flaw detection carry out ultrasonic inspection to the direct tube section of aluminium alloy inner container spinning pipe obtained in step S1c, in inspection Surface pores is mingled with, is recessed, the defect of micro-crack；

S2, the reconditioning of aluminium alloy inner container spinning pipe carry out interior appearance to aluminium alloy inner container spinning pipe obtained in step S1 The reconditioning that face scratches, damages；

The rotary press modelling of S3, end socket and bottleneck；

S4, the processing of bottleneck centre bore；

S5, curved surface flaw detection；

S6, curved interior surface reconditioning, according to result of detection, using end socket inner surface grinding machine tool to being found in step S5 End socket defect in inner surface carries out reconditioning, obtains up-to-standard rotary press modelling part C；

S7, heat treatment carry out T6 process to rotary press modelling part C obtained in step S6, obtain oversize high pressure Gas cylinder aluminium alloy inner container base；

S8, bottleneck processing, using overlength bottleneck machining center to oversize high pressure gas cylinder aluminium obtained in step S7 The A bottleneck of alloy liner base and the internal diameter and outer diameter of B bottleneck are machined out respectively, and process bottle outlet internal screw thread, are surpassed Large scale high pressure gas cylinder aluminium alloy inner container；

S9, liner cleaning, uses oversize high pressure gas cylinder obtained in step S8 using horizontal gas bottle liner cleaning machine The inner cavity of aluminium alloy inner container carries out high pressure water spray cleaning, removes processing pollution object.

The manufacturing method of oversize high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that in the step S1: institute The three spinning roller mistake of tension stated in step S1a is set as 6-12mm away from amount away from the mistake in dextrorotation spin-on process；

Preferably, the cleaning machine in the step S1c is rotary spray cleaning machine or supersonic cleaning machine；

Preferably, the cleaning of the aluminium alloy inner container spinning pipe is completed using the neutral cleaners for heating 30-45 DEG C；

More preferably, formula drying unit removal remained on surface water is stretched using interior after the aluminium alloy inner container spinning pipe cleaning Stain.

The manufacturing method of oversize high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the step S2 is specific Include the following steps:

S21 carries out reconditioning using outer surface of the cloth abrasive band to aluminium alloy inner container spinning pipe；

S22 carries out thick reconditioning using inner surface of the Chiba fabric disc to aluminium alloy inner container spinning pipe；

S23 carries out refine mill using inner surface of the scouring pad wheel to aluminium alloy inner container spinning pipe.

The manufacturing method of oversize high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the step S3 are as follows: adopt Being spun into for end socket and bottleneck is carried out respectively to the opening at the aluminium alloy inner container spinning pipe both ends with heating closing in spinning machine Type obtains rotary press modelling part B；The rotary press modelling part B includes the A end socket and B end socket at direct tube section and direct tube section both ends；Specific packet Include following steps:

S31, clamping carry out aluminium conjunction using Automatic-clamping, the centralising device after the hollow tooling of double fastener mouth split-type and main shaft The clamping of golden liner spinning pipe

S32, heating, to being heated to 200-400 DEG C at the spinning to be closed up of aluminium alloy inner container spinning pipe；

The formed spinning of S33, end socket and bottleneck, using unilateral X straight line, Z straight line and rotation three-dimensional insertion packing closing in spinning Machine carries out multi-pass closing in spinning to the aluminium alloy inner container spinning pipe heated in step S32；

S34 repeats the operation of step S31, S32, S33 to the other end of aluminium alloy inner container spinning pipe, obtains rotary press modelling Part B；The rotary press modelling part B includes the A end socket and B end socket at direct tube section and direct tube section both ends；

Preferably, the heating in the step S32 carries out burning bright eruption heating using oxygen, propane/LNG.

Oversize high pressure gas cylinder aluminium alloy inner container manufacturing method as described above, it is preferable that in oversize high pressure gas In bottle aluminium alloy inner container manufacturing method:

The A end socket and B end socket at the both ends rotary press modelling part B obtained in step S3 are distinguished in S4, the processing of bottleneck centre bore The machining for carrying out bottleneck centre bore, obtains rotary press modelling part C；

S5, curved surface flaw detection carry out closing in quality flaw detection to rotary press modelling part C obtained in step S4, examine end socket position Whether the manufacturing deficiency of orange peel, folding is had；

Wherein it is preferred to which the step S6 specifically comprises the following steps:

S61, using clamping tooling clamping rotary press modelling part C；

S62, the automatic endoscope system automatic Observation carried using end socket inner surface grinding machine tool judge that end socket inner surface lacks Situation is fallen into, corresponding position is recorded, and combines artificial confirmation；

S63, using the end socket inner mold face slot trimming mechanism of end socket inner surface grinding machine tool in the end socket found in step S5 Surface defect carries out reconditioning, obtains up-to-standard rotary press modelling part C；

Preferably, the clamping tooling of the rotary press modelling part C is the hollow clamping tooling of split-type；

Preferably, end socket inner mold face reconditioning is numerical control automatic grinding mechanism, programmable to independently execute.

The manufacturing method of oversize high pressure gas cylinder aluminium alloy inner container as described above, it is preferable that the step S7 includes Following steps:

S71, clamping, using the equidistant clamping rotary press modelling part C of the dedicated heat treatment tooling of multiple split-types；

S72, quenching treatment, is put into glowing furnace for the rotary press modelling part C of clamping in step S71 and is quenched, will revolve Molded part C is heated to 525-531 DEG C, and keeps the temperature 2-4 hours in 525-531 DEG C of environment, then carries out rotary press modelling part C Quenching；

Quenched rotary press modelling part C is transferred to aging furnace and carries out ageing treatment, finally in 160- by S73, ageing treatment 6-10 hours are kept the temperature in 200 DEG C of environment, oversize high pressure gas cylinder aluminium alloy inner container base is made；

Preferably, the quenching and timeliness are heat-treated using horizontal continuous quenching, aging furnace.

Oversize high pressure gas cylinder aluminium alloy inner container manufacturing method as described above, it is preferable that the step S8 is specifically wrapped Include following steps:

S81, using multiple split-types being fixed on platen from clamping device clamping high pressure gas cylinder aluminium alloy Liner base；

S82, bottleneck machining, using dedicated overlength bottleneck machining center to oversize high pressure gas obtained in step S6 The A bottleneck of bottle aluminium alloy inner container base and outer diameter, internal diameter and the bottleneck internal screw thread of B bottleneck carry out High-speed machining, obtain super large ruler Length, the outer diameter and inner diameter size of very little high pressure gas cylinder aluminium alloy inner container, the A bottleneck and B bottleneck be 40mm, 50mm、28mm。

Compared with the immediate prior art, technical solution provided by the invention is had the following beneficial effects:

The manufacturing method of oversize high pressure gas cylinder aluminium alloy inner container provided by the invention, the overall processing for using spinning Method, preparation process is simple, easy to operate, and low energy consumption, and pollution is small, and the loss of entire manufacturing process chinese raw materials is fewer, section The about cost of raw material.

In the aluminium alloy inner container spinning process of oversize, creative leads the present invention using floating core die cooperation is constant The method of gravitation, it is ensured that can smoothly process the high pressure gas cylinder liner of oversize.In heat treatment stages, in order to avoid The deformation of the aluminium alloy inner container of oversize is continuously heat-treated using horizontal continuous quenching, aging furnace, ensure that hot place Quality is managed, the generation of deformation is avoided.

The oversize high pressure gas cylinder aluminium alloy inner container that the manufacturing method of the present invention processes, nominal outside diameter Φ 300- Φ 850mm, volume are much higher than the volume of existing standard aluminium alloy inner container；The wall thickness of direct tube section is 3-10mm, has wall The characteristics of thin, light weight；The tensile strength of direct tube section is more than or equal to 345MPa, yield strength is more than or equal to 310MPa, elongation percentage More than or equal to 15%；Direct tube section any position organizes grain size to be more than or equal to 5 grades according to ASTME112 standard, interior material structure Even compact, integral strength excellent effect have high pressure resistant property, have great importance to the manufacture of high pressure gas cylinder.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of oversize high pressure gas cylinder aluminium alloy inner container in the embodiment of the present invention；

Fig. 2 is the manufacturing method flow chart of oversize high pressure gas cylinder aluminium alloy inner container in the embodiment of the present invention.

In figure: 1, A bottleneck；2, A end socket；3, direct tube section；4, B end socket；5, B bottleneck.

Specific embodiment

The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general Logical technical staff's every other embodiment obtained, shall fall within the protection scope of the present invention.

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that in the feelings not conflicted Under condition, the feature in embodiment and embodiment in the present invention be can be combined with each other.

In the description of the present invention, term " connected ", " connection " used in the present invention shall be understood in a broad sense, for example, can To be to be fixedly connected, may be a detachable connection；It can be directly connected, can also be indirectly connected by intermediate member, it is right For those skilled in the art, the concrete meaning of above-mentioned term can be understood as the case may be.

The present invention provides a kind of manufacturing method of oversize high pressure gas cylinder aluminium alloy inner container, oversize high pressure gas cylinder It is process by seamless tubular goods by this manufacturing method with aluminium alloy inner container；As shown in Figure 1, oversize high pressure gas cylinder is closed with aluminium Golden liner is the integrated seamless structure of both ends closing in formed head and bottleneck, including A bottleneck 1, A end socket 2, direct tube section 3, B envelope First 4 and B bottleneck 5, A end socket 2 and B end socket 4 are located at the both ends of direct tube section 3, and A bottleneck 1 and B bottleneck 5 are located at A end socket 2 On B end socket 4；The length of oversize high pressure gas cylinder aluminium alloy inner container be 5-13m (such as 5.5m, 6m, 6.5m, 7m, 7.5m, 8m, 8.5m, 9m, 9.5m, 10m, 10.5m, 11m, 11.5m, 12m, 12.5m), the nominal outside diameter of direct tube section 3 is Φ 300- Φ 850mm (such as Ф 350mm, Ф 400mm, Ф 450mm, Ф 500mm, Ф 550mm, Ф 600mm, Ф 650mm, Ф 700mm, Ф 750mm, Ф 800mm), the rated pressure of high pressure gas cylinder be 20-30Mpa (such as 21Mpa, 22Mpa, 23Mpa, 24Mpa, 25Mpa,26Mpa,27Mpa,28Mpa,29Mpa).The structure type of end socket is spheroid shape end socket, disk bottom or dome-type envelope The structure type of head, A end socket 2 is identical as the structure type of B end socket 4, and the thickness of end socket is from edge to the uniform gradual change in bottleneck position It thickens；, in an embodiment of the present invention, the structure type of A end socket 2 and B end socket 4 is dish-like；As shown in Fig. 2, of the invention The manufacturing method of oversize high pressure gas cylinder aluminium alloy inner container includes the following steps:

S1, aluminium alloy inner container spinning control is standby, using ultra-long barrel spinning with tension equipment to the direct tube section 3 of seamless tubular goods into The processing of row multi-pass strength outward turning pressing formation, obtains aluminium alloy inner container spinning pipe；The step specifically comprises the following steps:

S1a, the rotary press modelling of aluminium alloy inner container spinning pipe direct tube section 3, uses ultra-long barrel spinning with tension equipment with tension Three spinning roller mistakes carry out 2-4 (such as 2 times, 3 times, 4 times) spinning process to seamless tubular goods away from dextrorotation spin-on process, obtain spinning part A.In an embodiment of the present invention, three spinning roller mistake of tension away from dextrorotation spin-on process it is wrong away from amount be set as 6-12mm (such as 6.5mm,7mm,7.5mm,8mm,8.5mm,9mm,9.5mm,10mm,10.5mm,11mm,11.5mm)；1-2m is used when spinning (such as 1.1m, 1.2m, 1.3m, 1.4m, 1.5m, 1.6m, 1.7m, 1.8m, 1.9m) long floating core die carries out spinning auxiliary and adds Work；Seamless tubular goods is 55%-70% through spinning treated total deformation；In an embodiment of the present invention, when total deformation is big Intermediate annealing process should be carried out when 70%.Spinning part A is the direct tube section 3 of uniform thickness straight tube or both ends with outer circumferential end frame.? In the spinning manufacturing process of this step, one end using tractive force traction seamless tubular goods extends outwardly, the lead of tractive force It is opposite with the flow direction of material；Tractive force is constant force, the deformation velocity of the adaptive material of hauling speed；Seamless tubular goods is led Draw being axially fixed on traction mechanism of one end, it is ensured that by traction one end it is radial freely；Using positioning device to seamless tubular goods The radial direction of the other end be fixed and support, it is ensured that the other end of seamless tubular goods it is axially free.

S1b, the Processing to length of aluminium alloy inner container spinning pipe determine spinning part A obtained in step S1a using sawing machine Long processing, obtains aluminium alloy inner container spinning pipe；In an embodiment of the present invention, sawing machine uses double end automatic sawing machine, and saw blade uses The dedicated saw blade of aluminium alloy.

S1c, the cleaning of aluminium alloy inner container spinning pipe add 30-45 DEG C using rotary spray cleaning machine or supersonic cleaning machine Neutral cleaners aluminium alloy inner container spinning pipe obtained in step S1b is cleaned；Formula baking is stretched in using after the completion of cleaning It is water stain that equipment for drying removes remained on surface.

S1d, flaw detection carry out ultrasonic inspection to the direct tube section 3 of aluminium alloy inner container spinning pipe obtained in step S1c, check Inner surface stomata, be mingled with, be recessed, micro-crack the defects of；

S2, the reconditioning of aluminium alloy inner container spinning pipe, using overlength numerical control internal-external cavetto grinding machine to aluminium obtained in step S1 The reconditioning that alloy liner spinning pipe carries out surfaces externally and internally scuffing, damages；The step specifically comprises the following steps:

The rotary press modelling of S3, end socket and bottleneck opens aluminium alloy inner container spinning pipe both ends using heating closing in spinning machine The rotary press modelling for carrying out end socket and bottleneck at mouthful respectively, obtains rotary press modelling part B；Rotary press modelling part B includes direct tube section 3 and straight tube The A end socket 2 and B end socket 4 at 3 both ends of section；The step specifically comprises the following steps:

S31, clamping carry out aluminium conjunction using Automatic-clamping, the centralising device after the hollow tooling of double fastener mouth split-type and main shaft The clamping of golden liner spinning pipe；

S32, heating, using oxygen, the burning of propane/LNG to being sprayed at the spinning to be closed up of aluminium alloy inner container spinning pipe Flame is heated to 200-400 DEG C (such as 220 DEG C, 240 DEG C, 260 DEG C, 280 DEG C, 300 DEG C, 320 DEG C, 340 DEG C, 360 DEG C, 380 DEG C)；

The formed spinning of S33, end socket and bottleneck, using unilateral X straight line, Z straight line and rotation three-dimensional insertion packing closing in spinning Machine carries out 10-18 passage (such as 10 passages, 11 passages, 12 passages, 13 to the aluminium alloy inner container spinning pipe that heats in step S32 Passage, 14 passages, 15 passages, 16 passages, 17 passages, 18 passages) closing in spinning, in spinning process, the road closing in spinning 1-8 Secondary (such as 2 passages, 3 passages, 4 passages, 5 passages, 6 passages, 7 passages) have derotation, for thickening for bottleneck position；It is obtained The thickness of end socket by edge 5-8mm (such as 5.2mm, 5.4mm, 5.6mm, 5.8mm, 6mm, 6.2mm, 6.4mm, 6.6mm, 6.8mm, 7mm, 7.3mm, 7.6mm, 7.8mm) to bottleneck position 10-15mm (such as 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 13.5mm, 14mm, 14.5mm) uniformly gradual change thicken；

S34 repeats the operation of step S31, S32, S33 to the other end of aluminium alloy inner container spinning pipe, obtains rotary press modelling Part B；Rotary press modelling part B includes the A end socket 2 and B end socket 4 at 3 both ends of direct tube section 3 and direct tube section.

S4, the processing of bottleneck centre bore, the split-type being fixed on platen using 2-3 are carried out from clamping device The clamping of rotary press modelling part B；Using dedicated overlength bottleneck machining center to the A at the both ends rotary press modelling part B obtained in step S3 End socket 2 and B end socket 4 carry out the machining of bottleneck centre bore respectively, obtain rotary press modelling part C；It is ready for subsequent heat treatment；

S5, curved surface flaw detection, using Special curved surface ultrasound automatic flaw detector to rotary press modelling part C obtained in step S4 into The flaw detection of row closing in quality, examines whether end socket position has the manufacturing deficiencies such as orange peel, folding；

S6, curved interior surface reconditioning, according to result of detection, using dedicated end socket inner surface grinding machine tool to being sent out in step S5 Existing end socket defect in inner surface carries out reconditioning, obtains up-to-standard rotary press modelling part C；The step specifically comprises the following steps:

S61, using Automatic-clamping, the centralising device clamping rotary press modelling part after the hollow tooling of double fastener mouth split-type and main shaft C；

S62, the automatic endoscope system automatic Observation carried using dedicated end socket inner surface grinding machine tool judge 2 and of A end socket The defect in inner surface situation of B end socket 4 records corresponding position, and combines artificial confirmation；

S63, using the numerical control automatic grinding mechanism of dedicated end socket inner surface grinding machine tool to the end socket found in step S5 Defect in inner surface carries out reconditioning, obtains up-to-standard rotary press modelling part C, during reconditioning, numerical control automatic grinding mechanism can Programming independently executes.

S7, heat treatment carry out T6 process to rotary press modelling part C obtained in step S6, obtain oversize high pressure Gas cylinder aluminium alloy inner container base；The step specifically comprises the following steps:

S71, clamping, using the 3-5 equidistant clamping spinning of (such as 3,4,5) the dedicated heat treatment tooling of split-type Molded part C prevents its heat-treatment distortion；Multiple rotary press modelling part C are placed on solid by the dedicated heat treatment tooling of split-type It is heat-treated in the movements and postures of actors, convenient for primary heat treatment more than one piece rotary press modelling part C.

The rotary press modelling part C of clamping in step S71, is put into the roller of horizontal continuous quenching, aging furnace by S72, quenching treatment It on road, is sent into quenching chamber and is quenched, rotary press modelling part C is heated to 525-531 DEG C (such as 525.5 in quenching chamber DEG C, 526 DEG C, 526.5 DEG C, 527 DEG C, 527.5 DEG C, 528 DEG C, 528.5 DEG C, 529 DEG C, 529.5 DEG C, 530 DEG C, 530.5 DEG C), and In 525-531 DEG C of (such as 525.5 DEG C, 526 DEG C, 526.5 DEG C, 527 DEG C, 527.5 DEG C, 528 DEG C, 528.5 DEG C, 529 DEG C, 529.5 DEG C, 530 DEG C, 530.5 DEG C) keep the temperature 2-4 hours in environment (for example (,) 2.2 hours, 2.4 hours, 2.6 hours, 2.8 hours, 3 hours, 3.2 hours, 3.4 hours, 3.6 hours, 3.8 hours), rotary press modelling part C is then subjected to water fog medium quenching；It is answered in quenching Guarantee that all the contact water mist time is not greater than 5s to oversize high pressure gas cylinder with aluminium alloy inner container.

Quenched rotary press modelling part C is transferred to aging furnace and carries out ageing treatment, finally in 160- by S73, ageing treatment Keep the temperature 6-10 hours in 200 DEG C of (such as 165 DEG C, 170 DEG C, 175 DEG C, 180 DEG C, 185 DEG C, 190 DEG C, 195 DEG C) environment (such as 6.3 hours, 6.6 hours, 7 hours, 7.3 hours, 7.7 hours, 8 hours, 8.4 hours, 8.7 hours, 9 hours, 9.3 hours, 9.7 Hour), oversize high pressure gas cylinder aluminium alloy inner container base is made.

S8, bottleneck processing, using dedicated overlength bottleneck machining center to oversize high pressure gas cylinder obtained in step S7 It is machined out respectively with the internal diameter and outer diameter of the A bottleneck 1 of aluminium alloy inner container base and B bottleneck 5, and processes bottle outlet internal screw thread, Obtain oversize high pressure gas cylinder aluminium alloy inner container；The step specifically comprises the following steps:

S81 is fixed on the split-type on platen from clamping device clamping high pressure gas cylinder aluminium alloy using 2-3 Liner base；

S82, bottleneck machining, using dedicated overlength bottleneck machining center to oversize high pressure gas obtained in step S7 The A bottleneck 1 of bottle aluminium alloy inner container base and outer diameter, internal diameter and the bottleneck internal screw thread of B bottleneck 5 carry out High-speed machining, obtain super large Length, the outer diameter and inner diameter size of size high voltage gas cylinder aluminium alloy inner container, A bottleneck 1 and B bottleneck 5 be 40mm, 50mm、28mm。

S9, liner cleaning, using special horizontal cylinder liner cleaning machine to oversize high pressure gas obtained in step S8 The inner cavity of bottle aluminium alloy inner container carries out high pressure water spray cleaning, removes aluminium skimmings and other processing pollution objects；The step is specifically wrapped Include following steps:

S91 is placed on oversize high pressure gas cylinder aluminium alloy inner container is horizontal on special vertical cylinder liner cleaning machine, Enter special horizontal cylinder liner cleaning machine spraying mechanism inside liner, fixed liner；

S92 is sprayed using high pressure water or is cleaned by ultrasonic mode to the inner cavity of oversize high pressure gas cylinder aluminium alloy inner container It is cleaned, removes aluminium skimmings and other processing pollution objects；

S93, cleaning finish 45 ° of rear-inclined pourings；

S94 carries out liner drying using interior formula steam drying machine of stretching.

S10, product inspection are tested to the oversize high pressure gas cylinder obtained in step S9 with aluminium alloy inner container, are obtained To the finished product of oversize high pressure gas cylinder aluminium alloy inner container.

S11 carries out carbon fiber winding to the finished product of the obtained oversize high pressure gas cylinder aluminium alloy inner container of step S10, Oversize high pressure gas cylinder is obtained, the ultimate pressure capacity situation of the oversize high pressure gas cylinder is detected.

The oversize high pressure gas cylinder aluminium alloy inner container prepared through the manufacturing method of the present invention, the length is 5-13m, directly The nominal outside diameter of cylinder section 3 is Φ 300- Φ 850mm, and the wall thickness of direct tube section 3 is 3-10mm, and the whole straightness of direct tube section 3 is little In 0.5mm/m；The tolerance of the wall thickness of direct tube section 3 is less than or equal to ± 0.15mm；3 arbitrary line fragment position part straightness of direct tube section No more than 0.5mm/300mm；The circularity of 3 any position of direct tube section is not more than 0.5mm；The inside surface roughness of direct tube section 3 is less than Ra1.6 μm, the outer surface roughness of direct tube section 3 is less than Ra3.2 μm.Oversize high pressure gas made from the manufacturing method of the present invention The volume of bottle aluminium alloy inner container is much higher than the volume of existing standard aluminium alloy inner container, while also having wall thickness thin, high pressure resistant With the characteristics such as light weight.

Embodiment 1

A kind of diameter 300mm, length 10m are prepared, wall thickness is the oversize high pressure gas cylinder aluminium alloy inner container of 6mm, High pressure gas cylinder rated pressure requires to be 25Mpa, specifically includes following operating procedure:

S1a, the rotary press modelling of aluminium alloy inner container spinning pipe direct tube section 3, uses ultra-long barrel spinning with tension equipment with tension Three spinning roller mistakes away from dextrorotation spin-on process to length be 1600mm seamless tubular goods carry out 4 spinning processes, three spinning roller mistake of tension away from Mistake in dextrorotation spin-on process is set as 6mm away from amount；Spinning secondary process is carried out using the floating core die of m long when spinning；It obtains Spinning part A, spinning part A are the direct tube section 3 of uniform thickness straight tube or both ends with outer circumferential end frame.In the spinning manufacturing process of this step In, one end using tractive force traction seamless tubular goods extends outwardly, and the lead of tractive force and the flow direction of material are opposite； Tractive force is constant force, the deformation velocity of the adaptive material of hauling speed；Seamless tubular goods is led by being axially fixed in for one end of traction Draw in mechanism, it is ensured that by the radial free of traction one end；Consolidated using radial direction of the positioning device to the other end of seamless tubular goods Fixed and support, it is ensured that the other end of seamless tubular goods it is axially free.The size of spinning part A are as follows: total length 12500mm, straight tube Section 3 with a thickness of 6mm, both ends step section is with a thickness of 9mm.

S1b, the Processing to length of aluminium alloy inner container spinning pipe, using double end automatic sawing machine to spinning obtained in step S1a Part A carries out Processing to length, obtains aluminium alloy inner container spinning pipe；The length of the aluminium alloy inner container spinning pipe direct tube section 3 is 12000mm；

S1c, the cleaning of aluminium alloy inner container spinning pipe are added in 35 DEG C using rotary spray cleaning machine or supersonic cleaning machine Property cleaning agent cleans aluminium alloy inner container spinning pipe obtained in step S1b；Formula drying dress is stretched in using after the completion of cleaning It is water stain to set removal remained on surface.

S32, heating, using oxygen, the burning of propane/LNG to being sprayed at the spinning to be closed up of aluminium alloy inner container spinning pipe Flame is heated to 300 DEG C；

The formed spinning of S33, end socket and bottleneck, using unilateral X straight line, Z straight line and rotation three-dimensional insertion packing closing in spinning Machine carries out 12 passage closing in spinning to the aluminium alloy inner container spinning pipe heated in step S32；In spinning process, closing in spinning band There are 4 derotations, for thickening for bottleneck position；The thickness of end socket obtained is uniform from the 8mm at edge to the 12mm at bottleneck position Gradual change thickens；

S4, the processing of bottleneck centre bore, the split-type being fixed on platen using 2 are revolved from clamping device The clamping of molded part B；It is sealed using A of the dedicated overlength bottleneck machining center to the both ends rotary press modelling part B obtained in step S3 First 2 and B end socket 4 carry out the machining of bottleneck centre bore respectively, obtain rotary press modelling part C；It is ready for subsequent heat treatment；

S71, clamping are prevented at its heat using the equidistant clamping rotary press modelling part C of 4 dedicated heat treatment toolings of split-type Reason deformation；Multiple rotary press modelling part C are placed in the three-dimensional heat treatment movements and postures of actors by the dedicated heat treatment tooling of split-type, are convenient for one Secondary heat treatment more than one piece rotary press modelling part C.

The rotary press modelling part C of clamping in step S71, is put into the roller of horizontal continuous quenching, aging furnace by S72, quenching treatment On road, it is sent into quenching chamber and is quenched, rotary press modelling part C is heated to 525-531 DEG C in quenching chamber, and in 525- 3.5 hours are kept the temperature in 531 DEG C of environment, rotary press modelling part C is then subjected to water fog medium quenching；It should ensure that super large ruler in quenching With aluminium alloy inner container, all the contact water mist time is not greater than 5s to very little high pressure gas cylinder.

Quenched rotary press modelling part C is transferred to aging furnace and carries out ageing treatment, finally 170 by S73, ageing treatment 10 hours are kept the temperature in DEG C environment, oversize high pressure gas cylinder aluminium alloy inner container base is made.

S81, the split-type being fixed on platen using 4 is from clamping device clamping high pressure gas cylinder aluminium alloy Gallbladder base；

S93, cleaning finish 45 ° of rear-inclined pourings；

S10, product inspection test to the oversize high pressure gas cylinder obtained in step S9 with aluminium alloy inner container, portion Sub-item is inspected by random samples, is surveyed to the tissue grain size of any six positions of the high pressure gas cylinder aluminium alloy inner container of sampling observation Amount, the tissue grain size of measurement result six positions is respectively 6 grades according to ASTME112 standard, 6 grades, 7 grades, 7 grades, 6 grades, 5 Grade, to the tensile strength of the direct tube section 3 of the high pressure gas cylinder aluminium alloy inner container of sampling observation.Yield strength and elongation percentage are surveyed respectively Amount, through measuring, the tensile strength of direct tube section 3 is 345MPa, yield strength 310MPa, elongation percentage 16%, the production of this batch Product is qualified, obtains the finished product of high pressure gas cylinder aluminium alloy inner container.

By examining, the tissue grain size of any position of high pressure gas cylinder aluminium alloy inner container made from the present embodiment according to ASTME112 standard class is all larger than equal to 5 grades, and the tensile strength of direct tube section 3 is 345MPa, yield strength 310MPa, extends Rate is 16%；Carrying out the high pressure gas cylinder test limits pressure obtained after liner winding is 72Mpa, meets rated pressure 25Mpa's It is required that.

In conclusion the manufacturing method of oversize high pressure gas cylinder aluminium alloy inner container provided by the invention, overall to use The processing method of spinning, low energy consumption, pollute it is small, the loss of entire manufacturing process chinese raw materials is fewer, saved raw material at This.The oversize high pressure gas cylinder aluminium alloy inner container that the manufacturing method of the present invention processes, nominal outside diameter are Φ 300- Φ 850mm, volume are much higher than the volume of existing standard aluminium alloy inner container；The wall thickness of direct tube section is 3-10mm, the thin, matter with wall thickness Measure light feature；The tensile strength of direct tube section meets the requirement for being more than or equal to 345Mpa, yield strength satisfaction is more than or equal to The requirement of 310Mpa, elongation percentage meet the requirement more than or equal to 15%；Direct tube section any position organize grain size according to ASTME112 standard is more than or equal to 5 grades, and interior material structure even compact, integral strength excellent effect has high pressure resistant property, Have great importance to the manufacture of high pressure gas cylinder.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Mind and principle within, any modification, equivalent replacement, improvement and so on, accompanying claims protection scope of the present invention it It is interior.

Claims

1. an aluminum alloy liner for an oversized high-pressure gas cylinder is characterized in that, the aluminum alloy liner for the oversized high-pressure gas cylinder is used to store compressed gas as the inner liner of the winding gas cylinder, and the oversized high-pressure gas is used for storing compressed gas. The aluminum alloy liner for bottles is an integrated seamless structure with both ends closed to form a head and a bottle mouth, including A bottle mouth, A head, straight section, B head and B bottle mouth, the A head and B The sealing heads are respectively located at both ends of the straight cylinder section, and the A bottle mouth and the B bottle mouth are respectively located on the A sealing head and the B sealing head; -13m, the nominal outer diameter of the straight cylinder section is Φ300-Φ850mm, and the rated pressure of the high-pressure gas cylinder is 20-30Mpa.

2. The aluminum alloy liner for a super-sized high-pressure gas cylinder as claimed in claim 1, wherein the wall thickness of the straight section is 3-10mm, and the overall straightness of the straight section is not more than 0.5mm/m ;

Preferably, the tolerance of the wall thickness of the straight cylinder section is less than or equal to ±0.15mm;

Further preferably, the local straightness of the position of any straight section of the straight cylinder section is not greater than 0.5mm/300mm;

Further preferably, the roundness of any position of the straight cylinder section is not greater than 0.5mm;

Still preferably, the inner surface roughness of the straight cylinder section is less than Ra1.6 μm, and the outer surface roughness of the straight cylinder section is less than Ra3.2 μm.

3. The aluminum alloy liner for super-sized high-pressure gas cylinders as claimed in claim 1, wherein the structural type of the head is an ellipsoid head, a dish-shaped head or a hemispherical head, and the The structure type of the A head is the same as that of the B head, and the thickness of the head increases uniformly and gradually from the edge to the mouth of the bottle;

Preferably, the thickness of the sealing head increases uniformly and gradually from 5-8mm at the edge to 10-15mm at the mouth of the bottle;

Further preferably, the length of the bottle mouth is 40 mm, the outer diameter of the bottle mouth is 50 mm, and the inner diameter of the bottle mouth is 28 mm.

4. the manufacture method of the aluminum alloy liner for super large size high-pressure gas cylinder as described in any one of claim 1 to 3, is characterized in that, described manufacture method comprises the steps:

S1, the preparation of aluminum alloy inner tube spinning tube, using ultra-long cylinder tension spinning equipment to carry out multi-pass strong external spinning forming treatment on the straight section of the seamless tube, to obtain the aluminum alloy inner tube spinning tube; this step is specific It includes the following steps:

S1a, the spinning forming of the straight section of the aluminum alloy inner tube spinning tube, using the ultra-long cylinder tension spinning equipment to perform multiple spinning processes on the seamless tube with the tension three-wheel staggered distance positive spinning method, and obtain the spinning process. Pressing piece A; during spinning, a floating core die is used for spinning auxiliary processing; in the spinning manufacturing process, one end of the seamless pipe is drawn by a traction force to extend outward, and the traction direction of the traction force is opposite to the flow direction of the material; the traction force is Constant force, the pulling speed is adaptive to the deformation speed of the material; the axial direction of the pulled end of the seamless pipe is fixed on the pulling mechanism to ensure the radial freedom of the pulled end; the positioning device is used to carry out the radial direction of the other end of the seamless pipe. Fix and support to ensure the axial freedom of the other end of the seamless pipe;

S1b, the fixed-length processing of the aluminum alloy liner spinning tube, using a sawing machine to perform fixed-length processing on the spinning part A obtained in step S1a, to obtain the aluminum alloy liner spinning tube;

S1c, cleaning of the spinning tube of the aluminum alloy inner bladder, using a cleaning machine to clean the spinning tube of the aluminum alloy inner bladder obtained in step S1b;

S1d, flaw detection, ultrasonic flaw detection is performed on the straight section of the aluminum alloy liner spinning tube obtained in step S1c to check the defects of pores, inclusions, depressions and micro-cracks on the inner surface;

S2, the grinding of the aluminum alloy inner tube spinning tube, the inner and outer surfaces of the aluminum alloy inner tube spinning tube obtained in step S1 are repaired and ground for scratches and bruises;

S3, the spinning forming of the head and the bottle mouth;

S4, the processing of the center hole of the bottle mouth;

S5, surface flaw detection;

S6, grinding the inner surface of the curved surface, according to the flaw detection result, using a head inner surface grinding machine to repair the inner surface defects of the head found in step S5 to obtain a spinning forming part C of qualified quality;

S7, heat treatment, carry out T6 process to the spin-formed part C obtained in step S6, obtain the aluminum alloy liner blank for super-large high-pressure gas cylinder;

S8, bottle mouth processing, using an ultra-long bottle mouth machining center to machine the inner and outer diameters of the A bottle mouth and the B bottle mouth of the aluminum alloy liner blank for the super-sized high-pressure gas cylinder obtained in step S7, respectively, and process them. The inner thread of the bottle outlet is obtained to obtain the aluminum alloy liner for the super-sized high-pressure gas cylinder;

S9, liner cleaning, using a horizontal gas cylinder liner cleaning machine to perform high-pressure water spray cleaning on the inner cavity of the aluminum alloy liner for the super-sized high-pressure gas cylinder obtained in step S8 to remove processing pollutants.

5. The manufacturing method of the aluminum alloy liner for a super-sized high-pressure gas cylinder as claimed in claim 4, characterized in that, in the step S1: the tension three-spin wheel staggered distance positive spinning method in the step S1a The amount of staggered distance is set to 6-12mm;

Preferably, the cleaning machine in the step S1c is a rotary spray cleaning machine or an ultrasonic cleaning machine;

Preferably, the cleaning of the aluminum alloy liner spinning tube is completed with a neutral cleaning agent heated at 30-45°C;

Still preferably, after cleaning the aluminum alloy liner spinning tube, an inward drying device is used to remove residual water stains on the surface.

6. the manufacture method of the aluminum alloy liner for super-sized high-pressure gas cylinders as claimed in claim 4, is characterized in that, described step S2 specifically comprises the following steps:

S21, using cloth abrasive belt to grind the outer surface of the aluminum alloy inner tube spinning tube;

S22, use the Chiba cloth grinding wheel to roughen the inner surface of the aluminum alloy liner spinning tube;

S23, use a scouring pad wheel to finish grinding the inner surface of the aluminum alloy liner spinning tube.

7. the manufacture method of the aluminum alloy liner for super-sized high-pressure gas cylinders as claimed in claim 4, it is characterized in that, described step S3 is: adopt heating and closing spinning machine to spin tube two of described aluminum alloy liner. The openings of the ends are respectively subjected to spin forming of the head and the bottle mouth to obtain a spin-formed part B; the spin-formed part B includes the straight cylinder section and the A head and the B head at both ends of the straight cylinder section; the specific steps are as follows:

S31, clamping, using double-clamp split hollow tooling and automatic clamping and centering device behind the main shaft to clamp the aluminum alloy inner tube spinning tube

S32, heating, heating to 200-400°C at the to-be-received spinning position of the aluminum alloy liner spinning tube;

S33, the forming and spinning of the head and the bottle mouth, the single-sided X-line, the Z-line and the rotary three-way interpolation closing spinning machine are used to perform multi-pass closing and spinning on the aluminum alloy inner tube spinning tube heated in step S32 pressure;

S34, repeating the operations of steps S31, S32, and S33 for the other end of the aluminum alloy liner spinning tube to obtain a spinning molded part B; head;

Preferably, the heating in the step S32 uses oxygen, propane/LNG for combustion and flame heating.

8. super-large size high-pressure gas cylinder aluminum alloy inner tank manufacturing method as claimed in claim 7, is characterized in that, in super-large size high-pressure gas cylinder aluminum alloy inner tank manufacturing method:

S4, the processing of the center hole of the bottle mouth, the machining of the center hole of the bottle mouth is performed on the A head and the B head at both ends of the spin-formed part B obtained in step S3, to obtain the spin-formed part C;

S5, curved surface flaw detection, performing flaw detection on the closing quality of the spin-formed part C obtained in step S4, and checking whether there are processing defects of orange peel and folding at the position of the sealing head;

Wherein, preferably, the step S6 specifically includes the following steps:

S61, using a clamping tool to clamp the spinning forming part C;

S62, the automatic endoscopic system that comes with the head inner surface grinding machine is used to automatically observe and judge the defects on the inner surface of the head, record the corresponding position, and combine with manual confirmation;

S63, using the head inner profile grinding mechanism of the head inner surface grinding machine to repair and grind the defects on the inner surface of the head found in step S5, to obtain a spinning forming part C of qualified quality;

Preferably, the clamping tool of the spinning forming part C is a split hollow clamping tool;

Preferably, the internal profile surface grinding of the head is a numerical control automatic grinding mechanism, which can be independently executed by programming.

9. The manufacturing method of the aluminum alloy liner for super-sized high-pressure gas cylinders as claimed in claim 8, wherein the step S7 comprises the following steps:

S71, clamping, using a plurality of split-type special heat treatment tooling to clamp the spinning forming part C at equal distances;

S72, quenching treatment, put the spin-formed part C clamped in step S71 into a quenching furnace for quenching treatment, heat the spin-formed part C to 525-531°C, and keep the temperature at 525-531°C for 2-4 hours, then the spin-formed part C is quenched;

S73, aging treatment, transferring the quenched spinning forming part C to an aging furnace for aging treatment, and finally keeping the temperature at 160-200 ° C for 6-10 hours to obtain an aluminum alloy inner liner blank for an ultra-large high-pressure gas cylinder;

Preferably, the quenching and aging are performed in a horizontal continuous quenching and aging furnace for heat treatment.

10. The method for manufacturing an aluminum alloy liner for an oversized high-pressure gas cylinder as claimed in claim 4, wherein the step S8 specifically comprises the following steps:

S81, using a plurality of split-type self-clamping devices fixed on the machine table to clamp the aluminum alloy liner blank for high-pressure gas cylinders;

S82, bottle mouth machining, using a special super-long bottle mouth machining center to carry out the outer diameter, inner diameter and bottle mouth inner thread of the A bottle mouth and B bottle mouth of the aluminum alloy liner blank for the super-sized high-pressure gas cylinder obtained in step S6 High-speed processing is performed to obtain an aluminum alloy liner for an ultra-large high-pressure gas cylinder. The length, outer diameter and inner diameter of the A bottle mouth and the B bottle mouth are 40mm, 50mm, and 28mm, respectively.