CN1307013C - Method and equipment for successive co-orientation solidification casting and manufactured wire rod or plate and belt material - Google Patents
Method and equipment for successive co-orientation solidification casting and manufactured wire rod or plate and belt material Download PDFInfo
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- CN1307013C CN1307013C CNB2003101118799A CN200310111879A CN1307013C CN 1307013 C CN1307013 C CN 1307013C CN B2003101118799 A CNB2003101118799 A CN B2003101118799A CN 200310111879 A CN200310111879 A CN 200310111879A CN 1307013 C CN1307013 C CN 1307013C
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Abstract
The present invention provides a continuous and directional solidification casting method which comprises the following steps thatone end of a material guiding wire or a material guiding plate extends into a crystal hole, and the other end of the material guiding wire or the material guiding plate is guided into cooling fluid by a traction mechanism. After a crystallizer is preheated, a fluent material is input into the crystallizer, the input fluent material in the crystallizer carries out heat insulation, and the fluent material only directionally crystallizes on the end surface of the material guiding wire or the material guiding plate or a solidified material end surface which is combined with the material guiding wire or the material guiding plate. The material guiding wire or the material guiding plate is pulled by the traction mechanism, and crystallized and solidified materials are pulled out from the crystallizer and enter the cooling liquid. A continuous and directional solidification casting device comprises the crystallizer, the material guiding wire or the material guiding plate, a cooling member, the traction mechanism and a detection member. The method of the present invention has the advantages of simple operation, convenient and easy control, high automation, few tissue defects of obtained wire and plate band materials, uniform material, good performance, broad application range and good market perspective.
Description
Technical field
The present invention relates to casting technology field, be specifically related to the wire rod or the strip material of continuous directional solidification casting method, device and preparation thereof.
Background technology
Since nineteen fifty-two at first adopted directional freeze method studying plane and born of the same parents' shape to solidify, directional solidification technique was developed rapidly.This technology is used for eliminating the horizontal crystal boundary that generates in the crystallization process at first, thereby improves the unidirectional mechanical property of material.Because directional solidification technique can obtain some materials with particular tissues orientation and excellent properties, the main application of directional solidification technique at present is to produce the foundry goods with even column crystal or single crystal organization.Particularly produce the engine blade of high temperature alloy at aviation field, compare with the foundry goods that the conventional cast method obtains, it can make elevated temperature strength, creep resistant and enduring quality, the thermal fatigue property of leaf engine blade be greatly improved.For magnetic material, using directed solidification technology can make the column crystal orientation consistent with the direction of magnetization, improves the magnetic property of material greatly.Directional solidification technique also is the effective ways of preparation monocrystalline, and the semiconductor monocrystal silicon materials much are to adopt the method for directional solidification to make.Directional solidification technique also is widely used in the manufacturing of in-situ composite, and the in-situ composite that obtains with directional freeze method has been eliminated the influence at interface between wild phase and matrix in other Composite Preparation process, and performance of composites is improved greatly.The method of directional solidification has at present: exothermic mixture method, power reduce method, rapid solidification method, liquid metal cooling method etc.There is the shortcoming that cooling velocity is slow, thermograde is little in traditional directional solidification technique, and can only produce small-sized foundry goods and the short section bar of small bore.Application number is that 01132329.9 Chinese invention patent has been described a kind of process for purifying raw aluminium by changing liquid, directional solidification and conticasting, adopt continuous liquid changing device and directional solidification casting apparatus, after in melting ﹠ holding furnace, melting primary aluminum, adopt calandria that crystallizer is heated to the fusing point that temperature surpasses aluminium, the seeding rod is placed in the crystallizer, aluminium liquid is introduced chute, adopt electromagnetic pump and agitator to change liquid in the solid liquid interface of casting rod, and casting speed progressively added after the stabilization sub stage, begin to purify, the method device is complicated, the speed of pulling foundry goods can only be determined by rule of thumb, operating process is difficult holds, and can only produce bar, the length of the material of preparation is subjected to the restriction in device structure and space.Application number is continuous directional solidification casting technique and the equipment that 95103050.7 Chinese invention patent has been described a kind of special-shaped tube-like thin-wall component, this method is to have adopted the process of continuous directional solidification or electromagnetic crystallizer continuous casting at the outer surface of foundry goods, and has adopted the process of directional solidification precision casting at the inner surface of foundry goods; The weak point of said method is the device structure complexity, the speed that casting mold or foundry goods relatively move in the casting process can only be determined by experience, the difficult control of operating process, the shape of the part of manufacturing and size are subjected to the restriction of device structure, can only production cylindrical member or simple shape foundry goods.Application number is that 02116581.5 Chinese invention patent discloses a kind of preparation process of superfine oxygen-free copper wire, with oxygen-free copper is raw material, adopt the preparation of continuous directional solidification method to have the oxygen-free copper rod blank that the continuous cylindrical crystalline texture diameter is 5～30mm, make the diameter of copper bar be decreased to 8～15mm by cold rolling or warm-rolling; Adopt the method for drawing to carry out rough, finish draw then, oxygen-free copper rod blank cold working extending and deforming capacity is good, in drawing process, be difficult for producing phenomenons such as broken end, broken string, make the ultra-fine wire that diameter is 10～50 μ m, the electrical conductivity height of ultra-fine wire, but because the bar base limited length that directional solidification obtains can't produce the transmission that plain conductor is used for big electric current.
Summary of the invention
The objective of the invention is to solve above-mentioned the deficiencies in the prior art part, the continuous directional solidification casting method that provides a kind of process to be easy to reliable control, can uninterruptedly to cast wire rod or strip material continuously.
Another object of the present invention is to provide a kind of continuous directional solidification casting device of realizing said method.
A further object of the present invention is to provide wire rod or the strip material that a kind of structure property by said method and device preparation is good, be fit to production in enormous quantities.
Purpose of the present invention is achieved through the following technical solutions: this continuous directional solidification casting device comprises crystallizer, draws stockline or draws flitch, cooling component, haulage gear, detection means, described crystallizer is positioned at the top of cooling component, and its bottom has the crystallization mouth; Describedly draw stockline or draw flitch one end and can stretch into and make the cavity volume that forms a bottom lock in the crystallizer in the crystallization mouth, after the operation beginning, draw stockline or draw flitch and the material of crystallization and freezing can be drawn the crystallizer cavity volume; It is inside and outside and be oppositely arranged with crystallization mouth under the crystallizer that described haulage gear is positioned at cooling component, and the material of crystallization and freezing stretches out from the crystallization mouth and promptly sent out by the driving member traction after entering driving member; Described detection means is arranged on around the crystallization mouth, in order to detect the crystallization and freezing position in the crystallization mouth, keeps stablizing normal crystallization rate, realizes the continuous solidification crystallization.
Be provided with hollow cooling duct and heating element heater in the wall of described crystallizer simultaneously, hollow cooling duct is connected with the cooling fluid supply member by control valve, and heating element heater is connected with power supply by switch, and control valve and switch are connected with control piece.
Described detection means comprises ray generator and ray inductor, and ray generator and ray inductor lay respectively at crystallization mouth both sides and be oppositely arranged.
Described haulage gear is for single group running roller structure or organize the running roller structure more, and described running roller is positioned at outside cooling fluid or the cooling fluid.
Described draw stockline or draw the material of flitch can be identical with the metal liquid material of directional solidification, also can adopt metal material inequality.
The method of this continuous directional solidification casting comprises the steps: that (1) will draw stockline or draw flitch one end and stretch into and make the cavity volume that forms a bottom lock in the crystallizer in the crystallization mouth; (2) other end that will draw stockline or draw flitch is introduced in the cooling fluid that is contained in the cooling component by haulage gear; (3) after the crystallizer preheating, fluent material is imported in the crystallizer, and the fluent material of input in the crystallizer be incubated, make the fluent material can crystallization on the inner chamber wall of crystallizer, the heat of fluent material is delivered in the cooling fluid by drawing stockline or drawing flitch simultaneously, form the directional heat flow field, fluent material only to draw stockline draw on the end face of flitch or with draw stockline or draw crystallographic orientation on the cakey material end face that flitch combines; (4) draw stockline or draw flitch by haulage gear pulling, the material of crystallization and freezing is pulled out crystallizer enter in the cooling fluid; In the process that fluent material solidifies, draw the continuous directional solidification casting that pulling can realize fluent material continuously.
Haulage gear can be many group running roller structures in the described step (4), and the part that will draw stockline simultaneously or draw flitch is immersed in the end that will draw stockline in the cooling fluid or draw flitch and draws cooling fluid; This structure is used to handle flexible good, flexible wire rod or strip material, adopt this structure can realize the long wire rod or the preparation of strip material easily, specifically be to begin crystallization and freezing at fluent material, with draw stockline or draw flitch combine after, adopt running roller to draw stockline or draw flitch in the material of crystallization and freezing (flexible good, flexible) the introducing cooling fluid, and after cooling, draw cooling fluid along pulling out the path of drawing stockline or drawing flitch by pulling out; After drawing stockline or drawing flitch disengaging crystallizer, then the wire rod of crystallization and freezing or strip material have replaced the effect of drawing stockline or drawing flitch, the heat of fluent material passes through cakey material transfer in cooling fluid, form the directional heat flow field, fluent material can crystallization on the inner chamber wall of crystallizer, and crystallographic orientation on cakey material only, the running roller structure is by the cakey material of pulling, the material of crystallization and freezing is pulled out crystallizer enter and continue in the cooling fluid to draw cooling fluid after the cooling, can realize that continuous directional solidification obtains wire rod of the present invention or strip material.
Haulage gear also can be single group running roller structure in the described step (4), can handle big, unbending wire rod of rigidity or strip material like this; For this material, because it is not flexible, only can pull out downwards, so draw again after can not being introduced into cooling fluid continuously, generally only can directly introduce and treat in the cooling fluid to take out again after its cooling one by one, so but this form the factory length wire rod or the strip material of short strip, the maximum length that can prepare material is determined by the container dimensional of cooling fluid.
Can judge the solid phase of solidification material zone in the fluent material process of setting, the residing position of crystal region and liquid phase zone by detection means in the described step (3), by the speed that the real-time FEEDBACK CONTROL of haulage gear is regulated traction wire rod or strip material, guarantee in distraction procedure, to make fluent material crystallization and freezing zone in crystallizer, to be between certain position, the situation that La Detai causes bleedout soon can not appear, can not occur La Detai yet and cause situation about breaking slowly, can guarantee better that directional solidification successively stably carries out.
In order to realize the present invention better, can be after wire rod or strip material be drawn out crystallizer, enter cooling fluid before, coat protective coating on its surface, prevent that wire rod or strip material are oxidized.
In order to realize the present invention better, can apply compression to the liquid phase material in the crystallizer; Compression can be delivered to crystal region by liquid phase material, in the liquid material process of setting, makes liquid material crystallization under the compression condition, thereby obtains to have better structure property.
In order to realize the present invention better, drawing stockline or drawing flitch is monocrystal material, and the method by above-mentioned directional solidification produces monocrystal material.
In order to realize the present invention better, can vacuumize that making fluent material discharge dissolved gases carries out above-mentioned directional solidification process afterwards.
The present invention also can directly reel in cooling fluid and collect wire rod or the strip material for preparing.
The fluent material of Miao Shuing can be liquid metal and liquid alloy material in the present invention.
The present invention compared with prior art has following advantage and beneficial effect:
(1) simple to operate, the control convenience, easy of continuous directional solidification casting method of the present invention, the automaticity height, wire rod that is obtained and strip material structure defective are few, and material property is even, good mechanical performance.
(2) simple in structure, the low cost of manufacture of continuous directional solidification casting device of the present invention can be controlled directed continuous solidification process easily, realizes the continuous preparation of material, can produce long wire rod and strip material, reeling, it is convenient to collect, and application is wider, good market prospect.
(3) the strip material percentage elongation height that is obtained by the present invention can carry out big plastic deformation, manufactures complicated sheet-metal press working part.
(4) the wire rod electrical conductivity height that obtains by the present invention, resistivity is little, when being used to conduct electricity electric energy loss low, can reduce the waste of electric energy in transmission course; The caloric value of lead reduces simultaneously, has improved the security that electric wire uses.
(5) wire rod that is obtained by the present invention has high diamagnetism and high inductive, has purposes very widely in the electromagnetic induction field.
Description of drawings
Fig. 1 is the structural representation of continuous directional solidification casting device of the present invention.
Fig. 2 is the structural representation in continuous directional solidification casting device A-A shown in Figure 1 cross section.
Fig. 3 is the schematic diagram of another structure of continuous directional solidification casting device A-A shown in Figure 1 cross section.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
The concrete structure of continuous directional solidification casting device of the present invention as shown in Figure 1, as seen from Figure 1, this continuous directional solidification casting device comprises crystallizer 1, draw flitch 8, tank 11, four groups of traction running rollers 10,12,13,15, x ray generator 16,17,18 and X ray inductor 5,6,7, be loaded with water 9 in the tank 11, described crystallizer 1 is positioned at the top of tank 11, its bottom has crystallization mouth 3, be provided with hollow cooling duct 4 and heater strip 19 in the wall of crystallizer 1 simultaneously, hollow cooling duct 4 is connected with the cooling fluid supply member by control valve, heater strip 19 is connected with power supply by switch, and control valve and switch are connected with control piece; Described flitch 8 one ends that draw can stretch into the cavity volume 2 that makes a bottom lock of formation in the crystallizer 1 in the crystallization mouth 3, drawing flitch 8 parts is immersed in the water 9, its end is drawn the water surface and is drawn by one group of traction running roller 10, it is inside and outside that four groups of traction running rollers 10,12,13,15 lay respectively at tank 11, wherein three groups of traction running rollers 12,13,15 are arranged at tank 11 inside, immerse in the water 9, one group of carry-over pinch rolls 10 is arranged at above the tank 11; X ray generator 16,17,18 and X ray inductor 5,6,7 lay respectively at crystallization mouth both sides and are oppositely arranged, and x ray generator 16,17,18, X ray inductor 5,6,7 and crystallization mouth 3 threes are positioned at same perpendicular.
What present embodiment will prepare is continuous directional solidification strip material, concrete steps are: at first will draw flitch 8 and be docked at the cavity volume 2 that makes a bottom lock of formation in the crystallizer 1 in the crystallization mouth 3, described crystallization mouth 3 at the cross section at A-A place as shown in Figure 2, crystallization mouth 3 is a strip crevice, and width is 1mm; To tank 11 water fillings 9, water overflowed from the edge suitable for reading of tank 11 after the water of tank 11 had been expired by the water inlet on the tank 11 14; Give the heater strip that is distributed on crystallizer 1 chamber wall 19 energisings, will be preheating to 660 ℃ with crystallizer 1 chamber wall that die steel material is made, the almag liquid that will be superheated to 760 ℃ then waters in the cavity volume 2, and almag liquid enters in the crystallization mouth 3; Be distributed in temperature sensor 20 on crystallizer 1 chamber wall and be close to position, can measure the temperature at each position near the cavity volume wall; Heater strip 19 and hollow cooling duct 4 are controlled by the temperature information that obtains by control piece, can the almag liquid in cavity volume 2, the crystallization mouth 3 be incubated or cool off, keep the temperature of almag liquid, guarantee the not crystallization on the wall of crystallizer chamber wall of almag liquid; The break-make of cooling fluid and the size of liquid supply rate in the every hollow cooling duct 4 on the crystallization control device chamber wall also can be controlled the break-make of each heater strip 19 and the size of power separately separately; Because drawing flitch 8 parts is immersed in the water 9, the heat of the almag liquid between crystallization mouth 3 strip crevices imports in the water 9 through drawing flitch 8, formation enters the directional heat flow field of water 9 from almag liquid through drawing flitch 8, almag liquid crystallization and freezing on the end face that draws flitch 8 in the crystallization mouth 3, start by four groups of traction running rollers 15,13,12,10 haulage gears that constitute are pulled out strip crevice with the plate that has solidified in the crystallization mouth 3, the speed basis of pulling out is by x ray generator 16,17,18 and X ray inductor 5,6,7 information that obtain are determined, x ray generator 16,17,18 send the X ray of same intensity, the difference of the almag liquid curdled appearance in the crystallization mouth 3 causes X ray inductor 5,6,7 obtain the information of varying strength, can judge the crystallization and freezing regional location of almag liquid, thereby haulage gear is carried out real-time FEEDBACK CONTROL, regulate the speed of traction plate, guarantee in the process of traction plate, the zone of solidifying of almag liquid to be between X ray inductor 16 and 18 height and positions, the situation that La Detai causes bleedout soon can not appear, can not occur La Detai yet and cause the situation of breaking slowly, can guarantee that directional solidification continuously carries out; Simultaneously,, in time in cavity volume 2, replenish almag liquid, keep the production process of continous-stable according to remaining almag liquid in the cavity volume 2 what; Reel at last and collect prepared strip material.
Embodiment 2
Present embodiment is substantially the same manner as Example 1 except that following characteristics: be provided with a seal cover on the cavity volume 2 of crystallizer with cavity volume 2 sealings in Fig. 1, then cavity volume 2 is vacuumized, make almag liquid discharge its dissolved gases, in cavity volume 2, squeeze into Compressed Gas afterwards, to apply the compression of 1.5MPa on the aluminium alloy liquid level in the cavity volume 2 by gas.
Embodiment 3
What present embodiment will prepare is the continuous directional solidification wire rod, the continuous directional solidification casting device that it adopted is identical with device that embodiment 1 is adopted except that following characteristics: the cross sectional shape of crystallization mouth 3 as shown in Figure 3, be borehole structure, the aperture is 3mm, is correspondingly provided with in the crystallization mouth 3 to draw stockline 8; Described four groups of traction running rollers 10,12,13,15 adopt with guiding and draw the corresponding hitch structure of stockline.
The concrete operations step of present embodiment is: at first will draw stockline 8 and be docked at the cavity volume 2 that makes a bottom lock of formation in the crystallizer 1 in the circular crystallization mouth 3, to tank 11 water fillings 9, water overflowed from the edge suitable for reading of tank 11 after the water of tank 11 had been expired by the water inlet on the tank 11 14; Give the heater strip that is distributed on the crystallizer chamber wall 19 energisings, will be preheating to 660 ℃ with the crystallizer chamber wall that die steel material is made, the almag liquid that will be superheated to 760 ℃ then waters in the cavity volume 2, and almag liquid flows in the crystallization mouth 3; Be distributed in temperature sensor 20 on the crystallizer chamber wall and be close to position, can measure the temperature at each position near the cavity volume wall; Heater strip 19 and hollow cooling duct 4 are controlled by the temperature information that obtains by control piece, can the almag liquid in cavity volume 2, the crystallization mouth 3 be incubated or cool off, keep the temperature of almag liquid, guarantee the not crystallization on the wall of crystallizer chamber wall of almag liquid; The break-make of cooling fluid and the size of liquid supply rate in the every hollow cooling duct 4 on the crystallization control device chamber wall also can be controlled the break-make of each heater strip 19 and the size of power separately separately; Because drawing stockline 8 parts is immersed in the water 9, the heat of the almag liquid in crystallization mouth 3 circular ports imports in the water 9 through drawing stockline 8, formation enters the directional heat flow field of water 9 from almag liquid through drawing stockline 8, almag liquid crystallization and freezing on the end face that draws stockline 8 in the crystallization mouth 3, start by four groups of traction running rollers 15,13,12,10 haulage gears that constitute are pulled out circular hole with the line material that has solidified in the circular hole, the speed basis of pulling out is by x ray generator 16,17,18 and X ray inductor 5,6,7 information that obtain are determined, x ray generator 16,17,18 send the X ray of same intensity, almag liquid curdled appearance in crystallization mouth 3 circular holes can cause X ray inductor 5,6,7 obtain the information of varying strength, can judge the crystallization and freezing regional location of almag liquid, thereby haulage gear is carried out in good time FEEDBACK CONTROL, regulate the speed of draught line material, guarantee in the process of draught line material, to make the zone of solidifying of almag liquid to be between X ray generation 16 and 18 height and positions, the situation that La Detai causes bleedout soon can not appear, can not occur La Detai yet and cause the situation of breaking slowly, can guarantee that directional solidification continuously carries out; The line material is coated with the last layer protective coating after pulling out circular hole immediately, prevents that wire rod is oxidized; Simultaneously,, in time in cavity volume 2, replenish almag liquid, keep the production process of continous-stable according to remaining almag liquid in the cavity volume 2 what; Reel at last and collect the wire rod that obtains.
Claims (8)
1, a kind of continuous directional solidification casting device, it is characterized in that: comprise crystallizer, draw stockline or draw flitch, cooling component container, haulage gear, detection means, described crystallizer is positioned at the top of cooling component container, its bottom has the crystallization mouth, describedly draws stockline or draws flitch one end and stretch into movably and make the cavity volume that forms a bottom lock in the crystallizer in the crystallization mouth; It is inside and outside and be oppositely arranged with crystallization mouth under the crystallizer that described haulage gear is positioned at the cooling component container; Described detection means is arranged on around the crystallization mouth.
2, continuous directional solidification casting device according to claim 1, it is characterized in that: be provided with hollow cooling duct and heating element heater in the wall of described crystallizer simultaneously, hollow cooling duct is connected with the cooling fluid supply member by control valve, heating element heater is connected with power supply by switch, and control valve and switch are connected with control piece.
3, a kind of continuous directional solidification casting method is characterized in that comprising the steps: that (1) will draw stockline or draw flitch one end and stretch into and make the cavity volume that forms a bottom lock in the crystallizer in the crystallization mouth; (2) other end that will draw stockline or draw flitch is introduced in the cooling fluid that is contained in the cooling component container by haulage gear; (3) after the crystallizer preheating, fluent material is imported in the crystallizer, and the fluent material of input in the crystallizer be incubated, make fluent material only to draw stockline draw on the end face of flitch or with draw stockline or draw crystallographic orientation on the cakey material end face that flitch combines; (4) draw stockline or draw flitch by haulage gear pulling, the material of crystallization and freezing is pulled out crystallizer enter in the cooling fluid.
4, continuous directional solidification casting method according to claim 3, it is characterized in that: haulage gear is many group running roller structures in the described step (4), the part that to draw stockline simultaneously or draw flitch is immersed in the end that will draw stockline in the cooling fluid or draw flitch and draws cooling fluid, fluent material begin crystallization and freezing and with draw stockline or draw flitch combine after, adopt running roller to draw stockline or draw flitch in the material introducing cooling fluid of crystallization and freezing, and after cooling, draw cooling fluid along pulling out the path of drawing stockline or drawing flitch by pulling out.
5, continuous directional solidification casting method according to claim 3 is characterized in that: after wire rod or strip material are drawn out crystallizer, enter cooling fluid before, coat protective coating on its surface.
6, continuous directional solidification casting method according to claim 3 is characterized in that: the liquid phase material in the crystallizer is applied compression.
7, continuous directional solidification casting method according to claim 3 is characterized in that: drawing stockline or drawing flitch is monocrystal material.
8, a kind of wire rod or strip material by each described continuous directional solidification casting method preparation of claim 3～7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101118799A CN1307013C (en) | 2003-10-24 | 2003-10-24 | Method and equipment for successive co-orientation solidification casting and manufactured wire rod or plate and belt material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101118799A CN1307013C (en) | 2003-10-24 | 2003-10-24 | Method and equipment for successive co-orientation solidification casting and manufactured wire rod or plate and belt material |
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| CN1539572A CN1539572A (en) | 2004-10-27 |
| CN1307013C true CN1307013C (en) | 2007-03-28 |
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| CNB2003101118799A Expired - Fee Related CN1307013C (en) | 2003-10-24 | 2003-10-24 | Method and equipment for successive co-orientation solidification casting and manufactured wire rod or plate and belt material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100406161C (en) * | 2005-04-29 | 2008-07-30 | 中国科学院金属研究所 | A Directional Solidification Casting Method |
| US8906170B2 (en) * | 2008-06-24 | 2014-12-09 | General Electric Company | Alloy castings having protective layers and methods of making the same |
| CN102021348B (en) * | 2010-12-20 | 2012-06-27 | 钢铁研究总院 | Vacuum/gas shield electroslag remelting continuous directional solidification device and method |
| CN105081243B (en) * | 2015-08-17 | 2020-01-21 | 共慧冶金设备科技(苏州)有限公司 | Aluminum alloy wire continuous casting and rolling system |
| CN113172103A (en) * | 2021-05-06 | 2021-07-27 | 江苏恒鸿航天新材料有限公司 | Superfine silk of titanium alloy system of drawing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85201157U (en) * | 1985-04-01 | 1986-06-11 | 大连工学院 | Aluminium directional solidifying and purifying equipment |
| US5335715A (en) * | 1990-08-09 | 1994-08-09 | Nippon Steel Corporation | Method and apparatus for continuous casting |
| US5427172A (en) * | 1987-10-23 | 1995-06-27 | Ekerot; Sven T. | Method and apparatus for the direct casting of metals to form elongated bodies |
| CN1432442A (en) * | 2002-12-20 | 2003-07-30 | 西安工业学院 | Method and equipment to make metal wire become monocrystalline wire |
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2003
- 2003-10-24 CN CNB2003101118799A patent/CN1307013C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85201157U (en) * | 1985-04-01 | 1986-06-11 | 大连工学院 | Aluminium directional solidifying and purifying equipment |
| US5427172A (en) * | 1987-10-23 | 1995-06-27 | Ekerot; Sven T. | Method and apparatus for the direct casting of metals to form elongated bodies |
| US5335715A (en) * | 1990-08-09 | 1994-08-09 | Nippon Steel Corporation | Method and apparatus for continuous casting |
| CN1432442A (en) * | 2002-12-20 | 2003-07-30 | 西安工业学院 | Method and equipment to make metal wire become monocrystalline wire |
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