CN108160908A - Loose tool forging elbow forging method - Google Patents
Loose tool forging elbow forging method Download PDFInfo
- Publication number
- CN108160908A CN108160908A CN201611114672.0A CN201611114672A CN108160908A CN 108160908 A CN108160908 A CN 108160908A CN 201611114672 A CN201611114672 A CN 201611114672A CN 108160908 A CN108160908 A CN 108160908A
- Authority
- CN
- China
- Prior art keywords
- forging
- elbow
- loose tool
- manufacture
- profile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005242 forging Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 238000005516 engineering process Methods 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 238000000465 moulding Methods 0.000 abstract description 4
- 238000007731 hot pressing Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract 2
- 238000009659 non-destructive testing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000001192 hot extrusion Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/14—Making machine elements fittings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention relates to boiler high temperature and pressure elbows to manufacture field, mainly solves elbow raw materials seamless steel pipe procurement cycle length, is limited by wall thickness, forging short tube is of high cost, and utilization rate is low, it is impossible to meet production and market demands.Using the invention production method, hot rolled seamless steel tube or forging short tube can not used as raw material, cancel hot pressing or pushing link, pass through forging press, the profile-followed mould of combination, make blank one-pass molding in profile-followed cavity, later stage passes through appropriate heat treatment, and machine adds, after non-destructive testing, obtains the elbow product of required high quality.The invention may be applied not only in the manufacture of high-temperature high-pressure boiler industry elbow, also may extend to the manufacture of the other pipe fitting forging of forging industry.
Description
Technical field
The invention belongs to forging press loose tool forging production technical field more particularly to a kind of loose tool forging elbow forging sides
Method.
Background technology
Hot rolled seamless steel tube or forging short tube hot pressing or pushing shaped is usually used with high temperature and pressure elbow in boiler.Using
Seamless steel pipe is easily limited by thickness of steel pipe, procurement cycle etc., and the duration is longer；Complicated, the profit using forging short tube process route
Relatively low with rate, cost is higher, can not meet cost-effective, reduces the requirement of duration, in this case it is necessary to a kind of invention skill
Art solves problem above, meets high temperature and pressure elbow production requirement.
Invention content
The purpose of the present invention is to provide a kind of method, to solve hot rolled seamless steel tube used in boiler high temperature and pressure elbow
Encounter heavy wall and procurement cycle be difficult to meet the requirements, forge short tube cost it is excessively high when a kind of alternative techniques production technology.
The object of the present invention is achieved like this：First from the qualified steel ingot of steel mill's buying, after entering factory's reinspection qualification, sawing
Steel ingot feeder head, ingot butt are heated to 1200 DEG C or so, after heat preservation by industrial gas furnace, pass through forging press, combination mould, forging
Forging circle is shaped to, inclination blanking is cut by calculating blank cutting length, heat according to required elbow, lower blank is added by secondary
Heat is put into hot extrusion molding in the mould equipped with curved core, is examined after molding by heat treatment, machining until finished product.
The present invention implements to be such, and key technology is Fixture Design, by designing, manufacturing one to the two profile-followed tire of set
Tool, the curved core of different size produce the high temperature and pressure elbow of different size by hot extrusion, due to the invention used by it is crucial
The profile-followed mould of technology can guarantee that metal is plastically deformed in a near closed hollow ring, and metal is directed toward in the compression direction suffered by metal
The direction of flowing squeezes fully, and good forming effect can improve the internal flaw that ingot smelting is brought, and can keep good fibre
Direction is tieed up, obtains higher mechanical property；Due to being with shape forging, elbow appearance is regular, and circularity is good, and pipe hot pressing is forged compared to forging
Molding, process route greatly simplify, and the period is short, and utilization rate greatly improves.
From the above mentioned, the technology of the present invention is advanced, and not only inherent quality is good, but also smooth in appearance rounding for elbow, can make completely
For seamless steel pipe and the alternative materials of short tube are forged for high temperature, high pressure elbow production.
The present invention is also practically applicable to the production of the other similar pipe fittings of forging industry simultaneously.
Description of the drawings
The following drawings is only intended to do schematic illustration and explanation to the present invention, not delimit the scope of the invention.
Fig. 1：The schematic diagram of high temperature and pressure elbow.
Fig. 2：Profile-followed curved core schematic diagram.
Fig. 3：Profile-followed mould schematic diagram.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control illustrates this hair
Bright specific implementation method.
As shown in Figure 1, 2, 3, a kind of free forging press of high temperature and pressure elbow of the invention uses the method that loose tool forges.
Described Fig. 1 show high temperature and pressure elbow, and manufacturing process is：First by the steel ingot after sawing riser, ingot butt, it is put into
1200 DEG C or so, after held for some time are heated in industrial gas furnace, is taken out by reclaimer, on forging press through jumping-up, pull out
After long process, become a forging stick, cut inclination blanking by size heat is calculated, reheated after blanking, the blank heated is put
Entering in loose tool one end cavity after Fig. 2 and Fig. 3 assemblings, other end closing puts punch between free forging press and blank,
Under the action of large free forging press pressure, press pressure is squeezed into blank in loose tool cavity by punch, according to constancy of volume
Principle, blank constantly deform in cavity, are finally reached high temperature and pressure elbow shown in FIG. 1.
The foregoing is merely the schematical specific implementation methods of the present invention, are not limited to the scope of the present invention.It is any
Those skilled in the art, made equivalent variations and modification under the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention should be belonged to.
Claims (5)
1. loose tool forging elbow forging method, it is characterised in that with the profile-followed mould of one to two set and special tooling, pass through certain party
Make high temperature and pressure bend forming to on-load pressure.
2. loose tool forging elbow forging method as described in claim 1, it is characterised in that the manufacturing method key technology be with
The design and manufacture of shape tooling.
3. loose tool forging elbow forging method as described in claim 1, it is characterised in that the manufacturing method can be in routine certainly
By on forging press, the unique forging technology coordinated by profile-followed tooling and curved core produces the elbow of high quality.
4. loose tool forging elbow forging method as described in claim 1, it is characterised in that the manufacturing method can be used for forging to go
The manufacture of industry high temperature and pressure elbow.
5. loose tool forging elbow forging method as described in claim 1, it is characterised in that the manufacturing method can be used for power station, stone
Change is manufactured with elbow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114672.0A CN108160908A (en) | 2016-12-07 | 2016-12-07 | Loose tool forging elbow forging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114672.0A CN108160908A (en) | 2016-12-07 | 2016-12-07 | Loose tool forging elbow forging method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108160908A true CN108160908A (en) | 2018-06-15 |
Family
ID=62526562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611114672.0A Pending CN108160908A (en) | 2016-12-07 | 2016-12-07 | Loose tool forging elbow forging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108160908A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586831A (en) * | 2019-09-06 | 2019-12-20 | 江苏圣贤锻造有限责任公司 | Die assembly for forging oblique connecting pipe and forging method |
-
2016
- 2016-12-07 CN CN201611114672.0A patent/CN108160908A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586831A (en) * | 2019-09-06 | 2019-12-20 | 江苏圣贤锻造有限责任公司 | Die assembly for forging oblique connecting pipe and forging method |
| CN110586831B (en) * | 2019-09-06 | 2024-05-07 | 江苏圣贤锻造有限责任公司 | Die assembly for forging miter pipe and forging method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101695739B (en) | Forging process of large tee and large skew tee | |
| CN103522007B (en) | Method for manufacturing TC25 titanium alloy ring piece | |
| CN102274921B (en) | Method for forming train shaft forgings | |
| CN102240688B (en) | Method for forming rear axle whole by rapid extrusion | |
| CN102836895A (en) | Method for manufacturing special-shaped seamless steel pipe | |
| CN107052079B (en) | A kind of forming method of heavy caliber thick wall short radius high temperature alloy elbow | |
| CN102240716A (en) | Bending and horizontal type reshaping method of high-pressure bend | |
| CN102240698B (en) | Hot press forming method for reducing diameter of high-pressure elbow elliptical tube billet | |
| CN103567341B (en) | The method for forging and molding of CAP1400 nuclear pressure container nozzle belt | |
| CN104428102A (en) | Car steel ring spoke production and manufacture process and specific mould thereof | |
| KR101335651B1 (en) | Method for making the large size welding neck flange | |
| CN102744284A (en) | High-pressure elbow pipe billet heat-pushing temperature pressure shaping method | |
| CN103394881A (en) | Novel hot extrusion tee joint forming process | |
| CN103128509B (en) | A kind of integral automobile steel ring production technology | |
| CN108758142B (en) | Main pipe reducing tee joint and production process thereof | |
| CN108160908A (en) | Loose tool forging elbow forging method | |
| CN101862949A (en) | Backward extrusion forging method | |
| CN104668910B (en) | The strain-induced formula of large ring twists and semisolid die forging combination process | |
| CN103231224B (en) | The method of straight tube tube blank inner wall built-up welding aftershaping 90 ° of bend pipes | |
| CN114309374A (en) | Ring forging rolling forming method with flange on inner diameter | |
| CN113118351A (en) | Multi-way pipe fitting forging method | |
| CN104438989A (en) | Bidirectional combined rolling forming method for GCr15 steel thin-wall deep barrel ring piece | |
| CN205254535U (en) | Dual -purpose continuous production transversal joint submerged arc weld pipe's of slab band production facility | |
| CN104338782A (en) | Processing method of welded tube with wall having different thicknesses | |
| RU2706392C1 (en) | Method of manufacturing large-size forgings of half-cases of ball valves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180615 |