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Production method of large low-temperature isomeric part

A production method and technology for dissimilar components, which are applied in the field of nuclear fusion, can solve the problem that the nuclear fusion reactor cannot meet the requirements of extreme low temperature resistance, high-strength anti-electromagnetic disturbance performance indicators, and the bending deformation of multi-pass hot forging cannot be solved. Non-destructive testing and other problems to achieve the effect of alleviating the ultimate energy crisis of mankind, consolidating the overall competitiveness and enhancing the overall competitiveness

Active Publication Date: 2019-06-28
JIANGYIN ZENKUNG FORGING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with foreign countries, my country's technical level is 10 years behind, and the gap is particularly obvious in high-precision forging control, high-efficiency deformation bending, and grain structure control. There are certain defects in this aspect, which cannot solve the problems of product grain refinement, multi-pass hot forging, bending deformation, non-destructive testing, etc., and cannot meet the performance indicators of extremely low temperature resistance, high strength, and anti-electromagnetic disturbance, and cannot meet the requirements of nuclear fusion reactors.

Method used

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  • Production method of large low-temperature isomeric part
  • Production method of large low-temperature isomeric part
  • Production method of large low-temperature isomeric part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] A large-scale low-temperature structural member, the chemical composition of which is calculated in parts by weight: C: 0.021 parts, Si: 0.25 parts, Mn: 1.65 parts, P: 0.010 parts, S: 0.0038 parts, Cr: 17.1 parts, Ni: 12.0 parts, Mo: 2.36 parts, N: 0.069 parts, Cu: 0.12 parts, B: 0.00085 parts, Ti: 0.091 parts, Nb: 0.125 parts, Ta: 0.009 parts, Co: 0.041 parts,

[0127] The production method of the large-scale low-temperature heterogeneous component is as follows:

[0128] S1: heating

[0129] Place the 10.1t steel ingot forging in the forging heating device for preheating and then heat treatment:

[0130] In the first heating stage, the temperature is raised from room temperature to 440°C, and the heating time is 5h;

[0131] In the first heat preservation stage, heat preservation is carried out at 440°C for 7 hours;

[0132] In the second heating stage, the temperature is raised from 440°C to 845°C, and the heating time is 9 hours;

[0133] In the second heat pres...

Embodiment 2

[0162] A large-scale low-temperature structural member, the chemical composition of which is calculated in parts by weight: C: 0.024 parts, Si: 0.32 parts, Mn: 1.76 parts, P: 0.012 parts, S: 0.0045 parts, Cr: 17.3 parts, Ni: 12.2 parts, Mo: 2.43 parts, N: 0.074 parts, Cu: 0.15 parts, B: 0.00091 parts, Ti: 0.:095 parts, Nb: 0.138 parts, Ta: 0.010 parts, Co: 0.046 parts,

[0163] The production method of the large-scale low-temperature heterogeneous component is as follows:

[0164] S1: heating

[0165] Place the 10.3t steel ingot forging in the forging heating device for preheating and then heat treatment:

[0166] In the first heating stage, the temperature is raised from room temperature to 450 ° C, and the heating time is 6 hours;

[0167] In the first heat preservation stage, heat preservation is carried out at 450°C for 7 hours;

[0168] In the second heating stage, the temperature is raised from 450°C to 850°C, and the heating time is 10h;

[0169] In the second heat ...

Embodiment 3

[0198] A large-scale low-temperature structural member, the chemical composition of which is calculated in parts by weight: C: 0.027 parts, Si: 0.41 parts, Mn: 1.78 parts, P: 0.0:16 parts, S: 0.00:46 parts, Cr: 17.4 parts Parts, Ni: 12.4 parts, Mo: 2.45 parts, N: 0.079 parts, Cu: 0.:19 parts, B: 0.00095 parts, Ti: 0.097 parts, Nb: 0.143 parts, Ta: 0.012 parts, Co: 0.048 parts,

[0199] The production method of the large-scale low-temperature heterogeneous component is as follows:

[0200] S1: heating

[0201] Place the 10.5t steel ingot forging in the forging heating device for preheating and then heat treatment:

[0202] In the first heating stage, the temperature is raised from room temperature to 460 ° C, and the heating time is 8 hours;

[0203] In the first heat preservation stage, heat preservation is carried out at 460°C for 7 hours;

[0204] In the second heating stage, the temperature is raised from 460°C to 860°C, and the heating time is 12h;

[0205] In the seco...

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Abstract

The invention relates to a production method of a large low-temperature isomeric part. The production method comprises main production procedures of preheating, rounding, primary upsetting+drawing, cross forging deformation, secondary upsetting+drawing, water cooling, rough machining, solid-solution heat treatment, nondestructive detection, isomeric part finish machining and product completion; the produced large low-temperature isomeric part has the characteristics of ultralow-temperature resistance (-269 DEG C), low-temperature tensile strength of above 1400 MPa, fracture toughness of above200 MPam0.5, and high-electromagnetic disturbance resistance, meets the latest nuclear fusion reactor technical requirements of plasma temperature of 1*108 DEG C, discharge pulse of 100 seconds and service life of above 35 years; and the production method solves the problem that the large low-temperature isomeric part meets higher plasma current density and higher magnetic field intensity and magnetic constraining force, breaks through the research and forging technical difficulties of large low-temperature isometric parts of above 10 tons in out country, consolidates and improves the overallcompetitiveness of the nuclear fusion technology in out country, and effectively relieves the human ultimate energy crisis.

Description

technical field [0001] The invention relates to a production method of large-scale low-temperature heterogeneous components, belonging to the technical field of nuclear fusion. Background technique [0002] With the rapid development of the global economy and the rapid growth of population, energy consumption has increased sharply, and mankind is facing a serious energy shortage problem. Developed countries such as Europe, the United States and Japan are relatively mature in the field of nuclear fusion reactor research, especially in the development of large low-temperature support structures. In the 1950s and 1960s, countries such as Europe, America, Japan and Russia built small nuclear fusion reactors; in the 1990s, nuclear fusion required higher requirements for internal devices such as magnetic field coils, and low-temperature components were forged and welded; in the 21st century, Kobe Steel, Japan Companies such as Japan Steel and Japan Steel have launched mature larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00
Inventor 闫振伟刘圣祥赵建兴
Owner JIANGYIN ZENKUNG FORGING CO LTD