Hot rolling or hot piercing of high performance Fe-Cr-Co permanent magnetic alloy material

A permanent magnet alloy, FeCrCo technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problems of restricting industrial applications, low magnetic performance, high price, etc., to achieve reduced consumption, high magnetic performance, and processing performance Good results

Inactive Publication Date: 2009-06-17
天津冶金集团天材科技发展有限公司
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Problems solved by technology

[0003] The existing Fe-Cr-Co series of deformed permanent magnet alloy materials can be processed into permanent magnet materials, either because of low magnetic properties or because of high price, which limits the use and restricts industrial applications.

Method used

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Embodiment Construction

[0008] principle

[0009] Fe-Cr-Co alloy is an age-hardening alloy, which is developed by adding Co to the Fe-Cr binary alloy based on the Spinodal decomposition theory. It can be seen from the FeCrCo ternary phase diagram that high temperature (such as 1300 ° C) solidification A single body-centered cubic structure α phase is obtained by solution treatment, which forms a supersaturated solid solution after rapid cooling, and decomposes to form two body-centered cubic structures (α 1 +α 2 ) phase, α 1 The phase is rich in Fe-Co, which is a strong magnetic phase, α 2 The phase is rich in Fe-Cr, which is a weak magnetic phase. The two phases are distributed alternately and periodically to form an amplitude modulation structure. Due to the single domain effect, high permanent magnetic properties are obtained. The decomposition of the supersaturated solid solution of this type of alloy is anisotropic, that is, the distribution of the phase-preferred easy magnetization direction...

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Abstract

The invention discloses an iron chromium cobalt permanent magnet alloy material with high performance and hot roll or hot perforation thereof; wherein the hot roll temperature is furnace entry temperature; the material is heated to a predetermined temperature for heat reservation, is hot rolled into a thickness belt and then is sharply quenched. Hot perforation for pipes is much difficult than hot roll for wire rods or belts; the material bears compression, extension and twist in the process of processing blanks so that the hot perforation for pipes demands higher requirement to the material and stricter procedure. The perforation procedures are as below: pipe blank is formed to a light rod which enters into the furnace, is heated up along with the furnace, preserves heat and is cooled after perforation.

Description

technical field [0001] The invention belongs to the field of metallurgical metal materials and metal processing. Background technique [0002] With the rapid development of the electromechanical industry and the information industry, the diversification of products is accompanied by an increasing demand for various special-shaped, thin, high-performance magnetic materials that can be processed by any means and other special shapes. [0003] The existing Fe-Cr-Co series deformed permanent magnet alloy materials can be processed into permanent magnet materials, either because of their low magnetic properties or because of their high price, which restricts their use and restricts their industrial applications. [0004] The problem to be solved by the present invention is to overcome the above-mentioned defects, and to invent a Fe-Cr-Co deformed permanent magnet alloy material with high performance and low cobalt content, which has good mechanical properties and high magnetic pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/30H01F1/047C21D8/12
Inventor 于庆莲李文芳
Owner 天津冶金集团天材科技发展有限公司
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