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Forging processing technique for Fe-Si-B magnetic material

A magnetic material and processing technology, which is applied in the field of Fe-Si-B magnetic material forging and heating, can solve the problems of inability to forge and fracture of alloy ingots, etc.

Active Publication Date: 2014-09-03
度测(上海)科技服务中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because heating it with the conventional forging heating process will cause the alloy ingot to break, resulting in the situation that it cannot be forged

Method used

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  • Forging processing technique for Fe-Si-B magnetic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of forging processing technology of Fe-Si-B magnetic material, comprises steps as follows:

[0021] (1) Furnace the Fe-Si-B magnetic material blank at room temperature;

[0022] (2) Slowly heat to 610°C, the heating rate is 100°C / h, and keep at 610°C for 30 minutes;

[0023] (3) Continue the second stage of heating, heating from 610°C to 720°C within 30 minutes, and keep at 720°C for 40 minutes;

[0024] (4) Continue the third stage of heating, heating from 720°C to 820°C within 60 minutes, and keep at 820°C for 40 minutes;

[0025] (5) Continue the fourth stage of heating, heating from 820°C to 920°C within 90 minutes, and keep at 920°C for 40 minutes;

[0026] (6) Continue heating in the fifth stage, heating from 920°C to a top temperature of 1080°C within 180 minutes, and keep at the top temperature for 120 minutes;

[0027] (7) Start forging, the initial forging temperature is 1050°C, the final forging temperature is 900°C, and the relative pressing force ...

Embodiment 2

[0029] A kind of forging processing technology of Fe-Si-B magnetic material, comprises steps as follows:

[0030] (1) Furnace the Fe-Si-B magnetic material blank at room temperature;

[0031] (2) Slowly heat to 610°C, the heating rate is 80°C / h, and keep at 610°C for 40 minutes;

[0032] (3) Continue the second stage of heating, heating from 610°C to 720°C within 40 minutes, and keep at 720°C for 30 minutes;

[0033] (4) Continue the third stage of heating, heating from 720°C to 820°C within 90 minutes, and keep at 820°C for 30 minutes;

[0034] (5) Continue the fourth stage of heating, heating from 820°C to 920°C within 120 minutes, and keep at 920°C for 40 minutes;

[0035] (6) Continue the fifth stage of heating, heating from 920°C to the top temperature of 1080°C within 120 minutes, and keep at the top temperature for 180 minutes;

[0036] (7) Start forging, the initial forging temperature is 1040°C, the final forging temperature is 900°C, and the relative pressing forc...

Embodiment 3

[0038] A kind of forging processing technology of Fe-Si-B magnetic material, comprises steps as follows:

[0039] (1) Furnace the Fe-Si-B magnetic material blank at room temperature;

[0040] (2) Slowly heat to 610°C, the heating rate is 150°C / h, and keep at 610°C for 35 minutes;

[0041] (3) Continue the second stage of heating, heating from 610°C to 720°C within 35 minutes, and keep at 720°C for 35 minutes;

[0042] (4) Continue the third stage of heating, heating from 720°C to 820°C within 80 minutes, and keep at 820°C for 35 minutes;

[0043] (5) Continue the fourth stage of heating, heating from 820°C to 920°C within 100 minutes, and keep at 920°C for 30 minutes;

[0044] (6) Continue the fifth stage of heating, heating from 920°C to the top temperature of 1080°C within 150 minutes, and keep at the top temperature for 160 minutes;

[0045] (7) Start forging, the initial forging temperature is 1060°C, the final forging temperature is 900°C, and the relative pressing for...

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Abstract

The invention relates to a forging processing technique for a Fe-Si-B magnetic material. Fe-Si-B magnetic material blank is fed into a furnace at room temperature, slowly heated to 610 DEG C, kept warm, heated to 720 DEG again, subjected to warm keeping, then heated to 820 DGC C, kept warm, heated to 920 again, subjected to warm keeping, heated to the peak temperature of 1080 DEG C, subjected to warm keeping and forged. According to the invention, through heating pre-processing and reasonable heating processing parameters, the Fe-Si-B magnetic material can be prevented from fracturing when being heated before forging, so that the Fe-Si-B magnetic material can be processed and produced through a forging technology, and the problem that the conventional Fe-Si-B magnetic material fractures when being forged and heated directly and can not be produced through forging is solved.

Description

technical field [0001] The invention relates to a forging process of Fe-Si-B magnetic material, which belongs to the technical field of forging and heating of Fe-Si-B magnetic material. Background technique [0002] Fe-Si-B magnetic materials are favored for their high saturation magnetic induction and low coercive force. Nowadays, new processes are mainly used to prepare alloy thin strips, mainly using rapid solidification process. The disadvantage of this preparation process is that the size of the thin strips is affected. Restrictions, bandwidth and thickness are limited, production costs are higher than traditional processes, and production efficiency is low. [0003] The chemical composition (mass fraction, %) of the Fe-Si-B magnetic material is: 4-8Si, 1-4B, and the rest is Fe. Due to the high brittleness and low ductility of this alloy, there has been no report of its production using the traditional forging process. Because heating it with a conventional forging he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D8/12
Inventor 郭洪卫刘彦平李智孙宗辉王茂周文书贤金文见
Owner 度测(上海)科技服务中心
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