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Forging method of Nb47Ti alloy large-size bar for superconducting wire

A superconducting wire, large-scale technology, used in manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve the problems of excessive forging times and increased costs, and achieve shortened forging times. The effect of uniform and small, cost reduction

Active Publication Date: 2021-04-23
西部超导材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for forging large-scale Nb47Ti alloy rods for superconducting wires, which solves the problem of cost increase caused by too many forging fires in the prior art

Method used

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  • Forging method of Nb47Ti alloy large-size bar for superconducting wire
  • Forging method of Nb47Ti alloy large-size bar for superconducting wire
  • Forging method of Nb47Ti alloy large-size bar for superconducting wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1, blank forging:

[0038] Carry out the first fire forging of the Nb47Ti alloy ingot, the heating temperature of the first fire forging is 1160°C, and the heating time is 10h before it is released from the furnace, and the ingot is first upset and elongated, and the forging ratio is controlled at 1.4; then Carry out the second and third times of upsetting and elongating the ingot, the forging ratio is controlled at 1.7, and cooling is carried out after forging;

[0039] Step 2, intermediate forging:

[0040] The Nb47Ti alloy ingot after the billet forging in step 1 is subjected to the second fire forging. The heating temperature of the second fire forging is 980°C. After cooling;

[0041] Step 3, Finished Forging:

[0042] The Nb47Ti alloy ingot after the intermediate forging in step 2 is forged for the third fire with a radial forging machine, the heating temperature is 900°C, the forging ratio of the third fire forging is controlled at 4.0, and the radial for...

Embodiment 2

[0044] Step 1, blank forging:

[0045] The first fire forging is carried out on the Nb47Ti alloy ingot. The heating temperature of the first fire forging is 1200°C, and the heating time is 12 hours. Carry out the second and third times of upsetting and elongating the ingot, the forging ratio is controlled at 1.5, and cooling is carried out after forging;

[0046] Step 2, intermediate forging:

[0047] The Nb47Ti alloy ingot after the billet forging in step 1 is subjected to the second fire forging. The heating temperature of the second fire forging is 950°C. After cooling;

[0048] Step 3, Finished Forging:

[0049] The Nb47Ti alloy ingot after the intermediate forging in step 2 is forged with a radial forging machine for the third fire, the heating temperature is 870°C, the forging ratio of the third fire forging is controlled at 3.6, and the radial forging includes 4 deformation passes , the amount of deformation in each pass is 1.1, 1.4, 1.8, 1.3, and after forging, it ...

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Abstract

The invention discloses a forging method of an Nb47Ti alloy large-size bar for a superconducting wire. The method comprises the following steps: carrying out first heating number forging on an Nb47Ti alloy cast ingot, wherein the first heating number forging process comprises three times of upsetting, drawing and cooling after forging; performing second heating number forging on the Nb47Ti alloy ingot subjected to cogging forging, wherein the second heating number forging process comprises the steps of drawing out, rolling and cooling after forging; and performing third heating number forging on the Nb47Ti alloy ingot subjected to intermediate forging through a radial forging machine, conducting cooling after forging, and obtaining the Nb47Ti alloy large-size bar. By selecting the deformation mode, the deformation equipment and the deformation amount, the forging heating number and the production period are shortened, the cost is further reduced, and the large-size Nb47Ti alloy large-size bar with a uniform and fuzzy macrostructure and a uniform and fine microstructure can be obtained.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal processing methods, and relates to a forging method for large-size Nb47Ti alloy rods for superconducting wires. Background technique [0002] Nb47Ti alloy rod is an important raw material for preparing superconducting wires. Due to the extremely harsh service environment of superconducting wires, high requirements are placed on the uniformity of the structure of Nb47Ti alloy rods. The traditional forging of Nb47Ti alloy rods is to saw the ingot and cut the material, and after heating, the ingot is subjected to multi-fire upsetting deformation to achieve the purpose of improving the uniformity of the billet structure. Due to the large number of forging fires, The production cycle is longer, and the production cost also increases thereupon. Contents of the invention [0003] The purpose of the present invention is to provide a method for forging large-scale Nb47Ti alloy rods for supercon...

Claims

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Application Information

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IPC IPC(8): B21J5/00B21J5/06B21J5/08B21K29/00
CPCB21J5/00B21J5/06B21J5/08B21K29/00
Inventor 杨晶张胜张奕尚金金何龙龙李少强王凯旋刘向宏
Owner 西部超导材料科技股份有限公司
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