CN104745988A - Forging method of chromium/zirconium/copper special-shaped plate - Google Patents

Forging method of chromium/zirconium/copper special-shaped plate Download PDF

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Publication number
CN104745988A
CN104745988A CN201310727465.2A CN201310727465A CN104745988A CN 104745988 A CN104745988 A CN 104745988A CN 201310727465 A CN201310727465 A CN 201310727465A CN 104745988 A CN104745988 A CN 104745988A
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China
Prior art keywords
copper
forging
chromium
plate
zirconium
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Application number
CN201310727465.2A
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Chinese (zh)
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CN104745988B (en
Inventor
邱银
李广生
王凤德
邹晖
单亚农
毛维成
李玮
林才
曲德猛
蔡立君
刘健
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Yantai Wanlong Vacuum Metallurgy Co Ltd
Southwestern Institute of Physics
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Yantai Wanlong Vacuum Metallurgy Co Ltd
Southwestern Institute of Physics
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Application filed by Yantai Wanlong Vacuum Metallurgy Co Ltd, Southwestern Institute of Physics filed Critical Yantai Wanlong Vacuum Metallurgy Co Ltd
Priority to CN201310727465.2A priority Critical patent/CN104745988B/en
Priority claimed from CN201310727465.2A external-priority patent/CN104745988B/en
Publication of CN104745988A publication Critical patent/CN104745988A/en
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon

Abstract

The invention belongs to a forging method of a chromium/zirconium/copper special-shaped plate needed by a conventional magnet Tokamak device plate type toroidal field coil. The forging method comprises the following steps: a chromium/zirconium/copper copper ingot is heated for drawing and punching to produce a copper sleeve rough blank; the high-temperature hot ring rolling is performed for the produced copper sleeve rough blank to increase the diameter and to reduce the wall thickness, and the ring rolling afterheat is used for performing the solid solution heat treatment; an opening is sawed from one side of the produced copper sleeve-shaped blank, and the annular copper sleeve is spread to a flat plate by an oil press through forging; and the produced copper plate is unevenly deformed by the oil press to bend so as to obtain a final forging. Compared with a rolling or forging method in the prior art, the forging method of the chromium/zirconium/copper special-shaped plate has the advantages of largely reducing the reserved machining allowance in the rolling or forging process, improving the utilization rate of product materials, largely reducing the production cost, enabling the copper plate to obtain a fine crystal structure and satisfying all performance requirements of the device to the copper plate.

Description

A kind of forging method of chromium zirconium copper sketch plate
Technical field
The invention belongs to a kind of non-ferrous metals processing method, be specifically related to a kind of forging method for the chromium zirconium copper heterotype copper coin needed for the board-like toroidal field coil of conventional magnet tokamak device.
Background technology
Tokamak device is that a kind of magnetically confined plasma body that utilizes is to realize the fusion facility of controlled nuclear fusion reaction.Its central authorities are annular vacuum chambers, and outside is wrapped coil.Coil electricity produces huge magnetic field, for confining plasma, plasma body is reached a high temperature high pressure conditions, to reach the object of nuclear fusion reaction by various boosting means.Coil is divided into conventional magnet coil and superconducting magnet coil.Conventional magnet coil does conductor manufacture primarily of Copper and its alloy material.Board-like toroidal field coil needs the copper alloy with high strength and high conductivity sheet material in large size special-shaped cross section, and because its shape is special, performance requriements is high, give produce and manufacture bring very large difficulty, domestic do not manufacture oversized dimensions chromium zirconium copper abnormity copper coin.
Current existing production technique is, copper ingot hot forging, and---------cold rolling or cold forging---pack by aging strengthening model---machining---in solution heat treatment for hot rolling or forge hot.Forging process in this technique directly forges or is rolled into sheet material, then directly process, although this technique can meet production requirement, but in manufacturing processed, need to reserve very large process redundancy, cause material use efficiency low, production cost is high, and copper coin grain-size again after solution heat treatment is larger.
Summary of the invention
The object of this invention is to provide the forging method of a kind of large size chromium zirconium copper for toroidal field coil abnormity copper coin, to reduce the reserved process redundancy in forging process in a large number, abundant refinement copper coin grain structure, improves mechanical property and the conductivity of chromium zirconium copper copper coin as far as possible.
The present invention is achieved in that a kind of forging method of chromium zirconium copper sketch plate, comprises the following steps,
Steps A: the heating of chromium zirconium copper copper ingot is carried out that pier pulls out, copper sheathing crude green body is made in punching;
Step B: the copper sheathing crude green body obtained by steps A is carried out high-temperature hot looping mill rolling, makes its enlarged-diameter, wall thickness reduces, and utilizes looping mill rolling waste heat to carry out solution heat treatment simultaneously;
Step C: the copper sheathing shape blank obtained by step B is cut an opening from side, is launched into flat board through forging and stamping by ring-type copper sheathing with oil press;
Step D: the copper coin oil press obtained by step C is carried out nonaffine deformation, makes copper coin produce bending, obtains final forging.
Advantage of the present invention is, rolling compared to existing technology or forging method, and significantly can reduce the machining allowance that rolling or forging process are reserved, improve the material use efficiency of product, production cost significantly reduces; Copper coin can be made simultaneously to obtain very tiny grain structure, meet the properties requirement of device to copper coin.Tool has the following advantages: 1, adopt high-temperature hot looping mill rolling, and utilize looping mill rolling waste heat to carry out the thermomechanical treatment process of solution heat treatment, avoid to reheat and carry out solution heat treatment, therefore the abundant refinement grain structure of chromium zirconium copper copper coin; 2, the molding mode of nonaffine deformation is adopted, simple to operate, and significantly reduce forging reserving machine process redundancy, improve product material utilization ratio, reduce production cost.
Accompanying drawing explanation
Fig. 1 is blanking schematic diagram;
Fig. 2 is jumping-up, punching, reaming schematic diagram;
Fig. 3 is hot looping mill rolling schematic diagram;
Fig. 4 is sawing schematic diagram;
Fig. 5 is for being launched into dull and stereotyped schematic diagram;
Fig. 6 is nonaffine deformation forging schematic diagram;
Fig. 7 is forging finished figure.
In figure, 1 press-bending tire, 2 workpiece, 3 flat anvils, 4 nonaffine deformations, 5 homogeneous deformations, 6 nonaffine deformations.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
Tokamak device toroidal field coil center straight section after hydrokineter No. two A upgradings and lower crosspiece constitute L shape parts, highly for more than 5 meters, L shape parts bottom rail segment length is close to 2 meters, and the width of straight section is less than 0.4 meter, and L shape parts thickness is from left to right progressive thickening, high order end is about 11 millimeters, and under L shape parts, crosspiece low order end thickness reaches 50 millimeters.Traditional working method is rolling or the square plate forging uniform thickness, reaches desired size requirement by machining, and this method causes a large amount of wastes of copper coin.The technical problem to be solved in the present invention is to provide as solving the problems of the technologies described above, and the present invention is achieved in that
For a large size chromium zirconium copper abnormity copper coin forging method for toroidal field coil, comprise the following steps:
Steps A: the heating of chromium zirconium copper copper ingot is carried out that pier pulls out, copper sheathing crude green body is made in punching;
Step B: the copper sheathing crude green body obtained by steps A is carried out high-temperature hot looping mill rolling, makes its enlarged-diameter, wall thickness reduces, and utilizes looping mill rolling waste heat to carry out solution heat treatment simultaneously;
Step C: the copper sheathing shape blank obtained by step B is cut an opening from side, is launched into flat board through forging and stamping by ring-type copper sheathing with oil press.
Step D: the copper coin oil press obtained by step C is carried out nonaffine deformation, makes copper coin produce bending, obtains final forging.
Specific embodiment:
Select chromium zirconium copper copper ingot, weight is 2800kg
Steps A, by Heating temperature: 900 DEG C, be incubated 3 hours, pier is slightly thick to 540mm, and punching φ 280mm is smooth; Again melt down afterwards and be heated to 900 DEG C, be incubated 1.5 hours, saddle forging is to φ 500mm.
Step B, the copper sheathing crude green body obtained in steps A is heated to temperature: 980 DEG C, be incubated 1 hour, looping mill be hot-rolled down to size φ 1620mm φ 1400mm Χ 490mm, enter water immediately and carry out solution heat treatment.
Step C, with sawing machine, the ring base obtained in step B is cut an otch, smooth into flat board with pressing machine.
Step D, up and down curved part adopt nonaffine deformation, and middle straight section adopts homogeneous deformation, finally smoothly obtain qualified forging ' s block dimension.
The tensile strength of chromium zirconium copper forging finished product is greater than 350MPa, and yield strength is greater than 290MPa, and unit elongation is greater than 15%, fatigue strength (10 6) being greater than 190MPa, hardness is greater than 92HRF, and electric conductivity is not less than 82%IACS, and average grain size is less than 100 microns.

Claims (1)

1. a forging method for chromium zirconium copper sketch plate, is characterized in that: comprise the following steps,
Steps A: the heating of chromium zirconium copper copper ingot is carried out that pier pulls out, copper sheathing crude green body is made in punching;
Step B: the copper sheathing crude green body obtained by steps A is carried out high-temperature hot looping mill rolling, makes its enlarged-diameter, wall thickness reduces, and utilizes looping mill rolling waste heat to carry out solution heat treatment simultaneously;
Step C: the copper sheathing shape blank obtained by step B is cut an opening from side, is launched into flat board through forging and stamping by ring-type copper sheathing with oil press;
Step D: the copper coin oil press obtained by step C is carried out nonaffine deformation, makes copper coin produce bending, obtains final forging.
CN201310727465.2A 2013-12-25 A kind of forging method of chromium-zirconium-copper sketch plate Active CN104745988B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310727465.2A CN104745988B (en) 2013-12-25 A kind of forging method of chromium-zirconium-copper sketch plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310727465.2A CN104745988B (en) 2013-12-25 A kind of forging method of chromium-zirconium-copper sketch plate

Publications (2)

Publication Number Publication Date
CN104745988A true CN104745988A (en) 2015-07-01
CN104745988B CN104745988B (en) 2016-11-30

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105397417A (en) * 2015-12-02 2016-03-16 贵州安大航空锻造有限责任公司 Rolling method of high-temperature alloy plate shaped forging
CN108435821A (en) * 2018-02-02 2018-08-24 国机金属江苏有限公司 A kind of thin square plate forging method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105397417A (en) * 2015-12-02 2016-03-16 贵州安大航空锻造有限责任公司 Rolling method of high-temperature alloy plate shaped forging
CN108435821A (en) * 2018-02-02 2018-08-24 国机金属江苏有限公司 A kind of thin square plate forging method

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