CN104162616A - Method for forging double-lug U-shaped forged piece for thermonuclear fusion reactor - Google Patents
Method for forging double-lug U-shaped forged piece for thermonuclear fusion reactor Download PDFInfo
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- CN104162616A CN104162616A CN201410424104.5A CN201410424104A CN104162616A CN 104162616 A CN104162616 A CN 104162616A CN 201410424104 A CN201410424104 A CN 201410424104A CN 104162616 A CN104162616 A CN 104162616A
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Abstract
The invention discloses a method for forging a double-lug U-shaped forged piece for a thermonuclear fusion reactor. The method comprises the steps that firstly, a raw material ingot is heated to an initial forging temperature; secondly, a circular-ring-shaped blank is manufactured through the process of upsetting, punching, chambering and rounding, the circular-ring-shaped blank is forged into a rectangular-ring-shaped blank, the rectangular-ring-shaped blank is sawn off from the middle, and U-shaped blanks are obtained; thirdly, pressing is conducted through a hollow punch, so that the bottom of each U-shaped blank deforms to meet the size requirement; fourthly, the U-shaped blanks and the hollow punch are turned over together, each U-shaped blank is stretched, so that double-lug U-shaped blanks are obtained, and each double-lug U-shaped blank and the hollow punch are placed into a double-lug upsetting forming die together for overall upsetting; finally, the double-lug U-shaped forged piece is obtained. According to the method for forging the double-lug U-shaped forged piece for the thermonuclear fusion reactor, the metal fiber flow of the forged piece is distributed according to the shape of the product through integrated forging forming of complicated-structure parts, the structure is even, grain refinement is achieved, the shape is regular, and the special use demand of the thermonuclear fusion reactor can be met.
Description
Technical field
The invention belongs to technical field of forging, particularly ears U-shaped forging forging method for a kind of thermonuclear fusion heap.
Background technology
International thermonuclear fusion experimental reactor (being called for short ITER) plan, be 2005 by European Union, China, the U.S., Russia, Japan, Korea S and India seven sides participate in the international thermonuclear fusion experimental reactor of construction, object is to develop controllable nuclear fusion technology, and finally for the mankind provide unlimited, clean, the new forms of energy of safety, this plan is current global scale maximum, affect one of the most far-reaching international scientific research cooperative project, a kind of ears U-shaped part (seeing Fig. 1) in thermonuclear fusion experimental reactor, this part need adopt the forging of 316LN austenitic stainless steel material to form, because 316LN material belongs to austenite structure, change without ppolymorphism, grain size cannot be improved by heat treatment, therefore, only has the grain size that ensures forging by controlling Forging Technology, again because this part shape is irregular, 316LN material deformation temperature range is narrow, the reasons such as material deformation drag is large, be difficult to direct forging and molding, existing forging method is that sheet material and forging weld, but because wall thickness difference is larger, thinnest part only has 10mm, welding deformation is large and welding position grain size is thick, cannot meet the Special use requirement of thermonuclear fusion experimental reactor.
Summary of the invention
The object of the invention is to solve problems of the prior art, design provides a kind of thermonuclear fusion heap ears U-shaped forging forging method, can effectively solve the problem that this part adopts welding deformation and welding position grain coarsening, utilize the forging metallic fiber streamline of this method forging to distribute with shape of product, even tissue, grain refinement, regular shape, forging quality is high, and machining cutting output is little, and production efficiency is high.
Technical scheme of the present invention is:
Ears U-shaped forging forging method for a kind of thermonuclear fusion heap, first raw material ingot is heated to initial forging temperature, then pull out by jumping-up, punching, reaming full circle operation produces annular blank, by annular blank heating to initial forging temperature, simultaneously by rectangular annular external mold, rectangular ring core mould is preheated to 300～400 DEG C, utilize rectangular annular external mold, annular blank forging is become rectangular circular material blank by rectangular ring core mould, rectangular circular material blank is cut from centre, obtain U-shaped blank, U-shaped blank heating is to initial forging temperature, utilize hollow punch to press down, make U-shaped blank deformation of bottom to the size requiring, then U-shaped blank is overturn together with hollow punch, U-shaped blank is pulled out and obtains ears U-shaped blank, ears U-shaped blank is put into ears upsetting mold and is carried out after overall jumping-up together with hollow punch, finally obtain ears U-shaped forging.
The material of described ears U-shaped forging is 316LN austenitic stainless steel, and initial forging temperature is 1150～1180 DEG C.
Described raw material ingot is manufactured in annular blank process, adopts the drift of 300mm to carry out punching.
Beneficial effect of the present invention and advantage are:
This method is by the solid forging moulding of parts with complex structures, the distortion that has ensured forging is even, makes the grain size of forging meet instructions for use, and the forging metallic fiber streamline that forging goes out distributes with shape of product, even tissue, grain refinement, regular shape, forging quality is high, machining cutting output is little, production efficiency is high, can effectively solve the problem of welding deformation and welding position grain coarsening, can meet thermonuclear fusion and pile special instructions for use.
Brief description of the drawings
Fig. 1 is ears U-shaped forging schematic diagram in the present invention;
Fig. 2 is annular blank schematic diagram in the present invention;
Fig. 3 is rectangular circular material blank schematic diagram in the present invention;
Fig. 4 is U-shaped blank schematic diagram in the present invention;
Fig. 5 is ears U-shaped blank schematic diagram in the present invention;
Fig. 6 is the shaping schematic view of rectangular circular material blank in the present invention;
Fig. 7 is ears U-shaped blank pulling shaping schematic view in the present invention;
Fig. 8 is ears upsetting mold schematic diagram in the present invention;
In figure: 1-ears U-shaped forging, 2-annular blank, the rectangular circular material blank of 3-, 4-U shape blank, 5-ears U-shaped blank, the rectangular annular external mold of 6-, 7-rectangular ring core mould, 8-hollow punch, 9-ears upsetting mold.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, but the scope that should at this point not be interpreted as theme of the present invention only limits to following embodiment, without departing from the idea case in the present invention described above, all various amendments, replacement and changes of making according to ordinary skill knowledge and customary means, include within the scope of the invention.
As shown in Figures 1 to 8, a kind of ears U-shaped forging 1 using in thermonuclear fusion experimental reactor, this ears U-shaped forging 1 needs to adopt the forging of 316LN austenitic stainless steel material to form, this part shape is irregular, 316LN material deformation temperature range is narrow, the reasons such as material deformation drag is large, are difficult to direct forging and molding.For this reason, the present invention's design provides a kind of thermonuclear fusion heap ears U-shaped forging forging method, first 316LN austenite stainless steel ingot is heated to 1150～1180 DEG C, then pull out by jumping-up, adopt the drift of 300mm to carry out punching, reaming full circle operation produces annular blank 2, annular blank 2 is heated to 1150～1180 DEG C, simultaneously by rectangular annular external mold 6, rectangular ring core mould 7 is preheated to 300～400 DEG C, utilize rectangular annular external mold 6, annular blank 2 is forged into rectangular circular material blank 3 by rectangular ring core mould 7, rectangular circular material blank 3 is cut from centre, obtain U-shaped blank 4, U-shaped blank 4 is heated to initial forging temperature, utilize hollow punch 8 to press down, make U-shaped blank 4 deformation of bottom to the size requiring, then U-shaped blank 4 is overturn together with hollow punch, U-shaped blank 4 is pulled out and obtains ears U-shaped blank 5, ears U-shaped blank 5 is put into ears upsetting mold 9 and is carried out after overall jumping-up together with hollow punch 8, finally obtain ears U-shaped forging 1.
Described ears U-shaped blank 5 is put into the overall jumping-up of ears upsetting mold 9 and is completed within a fire together with hollow punch 8, to guarantee product bulk deformation uniformity, makes the grain size of 316LN ears U-shaped forging 1 meet instructions for use.
Utilize the ears U-shaped forging 1 of the 316LN austenitic stainless steel material that this method forging obtains, in the time of 4K temperature, yield strength is greater than 700Mpa, tensile strength is greater than 1385Mpa, and its intensity, grain size all can meet the instructions for use of thermonuclear fusion heap, and steady quality is reliable.
Claims (4)
1. an ears U-shaped forging forging method for thermonuclear fusion heap, it is characterized in that first raw material ingot being heated to initial forging temperature, then pull out by jumping-up, punching, reaming full circle operation produces annular blank (2), annular blank (2) is heated to initial forging temperature, simultaneously by rectangular annular external mold (6), rectangular ring core mould (7) is preheated to 300～400 DEG C, utilize rectangular annular external mold (6), annular blank (2) is forged into rectangular circular material blank (3) by rectangular ring core mould (7), rectangular circular material blank (3) is cut from centre, obtain U-shaped blank (4), U-shaped blank (4) is heated to initial forging temperature, utilize hollow punch (8) to press down, make U-shaped blank (4) deformation of bottom to the size requiring, then U-shaped blank (4) and hollow punch are overturn together, U-shaped blank (4) is pulled out and obtains ears U-shaped blank (5), ears U-shaped blank (5) and hollow punch (8) are put into together to ears upsetting mold (9) and are carried out after overall jumping-up, finally obtain ears U-shaped forging (1).
2. a kind of thermonuclear fusion heap ears U-shaped forging forging method according to claim 1, the material that it is characterized in that described ears U-shaped forging (1) is 316LN austenitic stainless steel, described initial forging temperature is 1150～1180 DEG C.
3. a kind of thermonuclear fusion heap ears U-shaped forging forging method according to claim 1, is characterized in that, in described raw material ingot manufacture annular blank (2) process, adopting the drift of 300mm to carry out punching.
4. ears U-shaped forging forging method for a kind of thermonuclear fusion heap according to claim 2, is characterized in that described ears U-shaped blank (5) and hollow punch (8) are put into together to the overall jumping-up of ears upsetting formation mould (9) to complete within a fire.
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| CN201410424104.5A CN104162616B (en) | 2014-08-26 | 2014-08-26 | Thermonuclear fusion heap ears U-shaped forging forging method |
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| CN201410424104.5A CN104162616B (en) | 2014-08-26 | 2014-08-26 | Thermonuclear fusion heap ears U-shaped forging forging method |
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| CN104162616A true CN104162616A (en) | 2014-11-26 |
| CN104162616B CN104162616B (en) | 2016-01-27 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689621A (en) * | 2016-04-27 | 2016-06-22 | 贵州航天新力铸锻有限责任公司 | Die for formation of large-scale double-lug U-shaped forge piece |
| CN105728607A (en) * | 2016-04-19 | 2016-07-06 | 贵州航天新力铸锻有限责任公司 | Billet for forming large-sized double-lug U-shaped forged piece |
| CN105798215A (en) * | 2016-04-19 | 2016-07-27 | 贵州航天新力铸锻有限责任公司 | Manufacturing method of large double-lug U-shaped part for thermonuclear fusion reactor |
| CN108161469A (en) * | 2018-02-22 | 2018-06-15 | 江阴振宏重型锻造有限公司 | A kind of process units of fusion reactor large scale fine grain special-shaped component |
| CN108194784A (en) * | 2018-02-22 | 2018-06-22 | 江阴振宏重型锻造有限公司 | A kind of nuclear fusion support U-shaped component and its manufacturing process |
| CN108735387A (en) * | 2018-05-31 | 2018-11-02 | 西部超导材料科技股份有限公司 | A kind of preparation method of the superconductive cable super large-scale copper line of rabbet joint |
| CN108735377A (en) * | 2018-05-31 | 2018-11-02 | 西部超导材料科技股份有限公司 | A kind of preparation method of the U-shaped copper line of rabbet joint of NbTi/Cu superconducting wires |
| CN109595455A (en) * | 2018-12-04 | 2019-04-09 | 贵州航天新力铸锻有限责任公司 | ITER project U-typed forging brake forming slab |
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| CN102091751A (en) * | 2010-12-03 | 2011-06-15 | 太原科技大学 | Control method for 316 LN steel heavy-forging forging crystalline grain |
| KR20120135835A (en) * | 2011-06-07 | 2012-12-17 | 용현비엠 주식회사 | Manufacturing method of pipe having circular internal |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105728607A (en) * | 2016-04-19 | 2016-07-06 | 贵州航天新力铸锻有限责任公司 | Billet for forming large-sized double-lug U-shaped forged piece |
| CN105798215A (en) * | 2016-04-19 | 2016-07-27 | 贵州航天新力铸锻有限责任公司 | Manufacturing method of large double-lug U-shaped part for thermonuclear fusion reactor |
| CN105689621A (en) * | 2016-04-27 | 2016-06-22 | 贵州航天新力铸锻有限责任公司 | Die for formation of large-scale double-lug U-shaped forge piece |
| CN108161469A (en) * | 2018-02-22 | 2018-06-15 | 江阴振宏重型锻造有限公司 | A kind of process units of fusion reactor large scale fine grain special-shaped component |
| CN108194784A (en) * | 2018-02-22 | 2018-06-22 | 江阴振宏重型锻造有限公司 | A kind of nuclear fusion support U-shaped component and its manufacturing process |
| CN108194784B (en) * | 2018-02-22 | 2023-08-04 | 江阴振宏重型锻造有限公司 | U-shaped component for nuclear fusion support and manufacturing process thereof |
| CN108735387A (en) * | 2018-05-31 | 2018-11-02 | 西部超导材料科技股份有限公司 | A kind of preparation method of the superconductive cable super large-scale copper line of rabbet joint |
| CN108735377A (en) * | 2018-05-31 | 2018-11-02 | 西部超导材料科技股份有限公司 | A kind of preparation method of the U-shaped copper line of rabbet joint of NbTi/Cu superconducting wires |
| CN108735387B (en) * | 2018-05-31 | 2020-05-26 | 西部超导材料科技股份有限公司 | Preparation method of oversized copper groove wire for superconducting cable |
| CN109595455A (en) * | 2018-12-04 | 2019-04-09 | 贵州航天新力铸锻有限责任公司 | ITER project U-typed forging brake forming slab |
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| CN104162616B (en) | 2016-01-27 |
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Address after: 563000 electromechanical Manufacturing Industrial Park, Zunyi economic and Technological Development Zone, Guizhou Province Patentee after: Guizhou Aerospace Xinli Technology Co.,Ltd. Address before: 563003 Zunyi Park, Guizhou Aerospace hi tech Industrial Park, aerospace Road, Zunyi City, Guizhou Province Patentee before: GUIZHOU AEROSPACE XINLI CASTINGS AND FORGINGS Co.,Ltd. |