Soft magnetic steel and method for manufacturing same, and soft magnetic component obtained from soft magnetic steel

A manufacturing method and soft magnetic technology, applied to magnetic materials, electrical components, manufacturing tools, etc., can solve the problems of deterioration of productivity and high alloy cost, and achieve the effects of suppressing magnetic aging, excellent cold forgeability, and good processability

Inactive Publication Date: 2016-07-13
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in these technologies, in addition to the high cost of the alloy, there is also a deterioration in productivity such as steel manufacturability and component processability.

Method used

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  • Soft magnetic steel and method for manufacturing same, and soft magnetic component obtained from soft magnetic steel
  • Soft magnetic steel and method for manufacturing same, and soft magnetic component obtained from soft magnetic steel
  • Soft magnetic steel and method for manufacturing same, and soft magnetic component obtained from soft magnetic steel

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Embodiment

[0105] Hereinafter, the present invention will be described more specifically with reference to examples. The present invention is not limited by the following examples, and within the range that can meet the above-mentioned and hereinafter-described purposes, of course, it can also be appropriately modified and implemented, and all of these are included in the technical scope of the present invention.

[0106] Following the usual melting method, the steel with the composition shown in Table 1 was smelted and cast, and then hot rolled and cooled under the conditions shown in Table 2 to obtain a steel material with a diameter of 20 mm, that is, a rolled material. That is, hot rolling was performed at the heating temperature and final temperature described in Table 2, and after the coiling was completed at the coiling temperature described in Table 2, rapid cooling and slow cooling were performed under the conditions described in Table 2. In addition, the balance of the composit...

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Abstract

The objective of the present invention is to provide soft magnetic steel in which magnetic characteristics, namely, soft magnetic characteristics, as well as cold forgeability and magnetic aging characteristics are improved without adding large amounts of alloying elements. The present invention is a soft magnetic steel characterized in containing prescribed amounts of C, Mn, P, S, Al, and N; the area ratio of carbides and carbonitrides having a thickness of less than 0.4 [mu]m is 0.20% or less by area; and the area ratio (M) as a percentage of carbides and carbonitrides having a thickness of 0.4 [mu]m or more satisfies the relationship of equation (1). F=M-20*[C]>0... (1) (where [C] indicates the C concentration of the steel in percentage by mass).

Description

technical field [0001] The present invention relates to a steel material for soft magnetic elements excellent in magnetic aging properties, a method for producing the same, and an element using the steel material. The form of the steel material of the present invention is not particularly limited, and may be a wire rod, a steel bar, a plate, or the like, but can be particularly preferably applied to a wire rod or a steel bar. Background technique [0002] In response to energy saving in automobiles and the like, most electrical components such as electromagnetic components used in automobiles require power saving and precise control. In particular, steel materials constituting the magnetic circuit are required to be easily magnetized under a weak external magnetic field and have a small coercive force as magnetic properties. [0003] As the above-mentioned steel material, generally used is a soft magnetic steel material whose magnetic flux density inside the steel material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/00C21D8/12C22C38/60H01F1/16
CPCC21D1/18C21D1/19C21D1/26C21D8/005C21D8/1244C21D8/1261C21D9/0068C21D2211/004C21D2211/005C22C38/00C22C38/001C22C38/002C22C38/004C22C38/02C22C38/04C22C38/06C22C38/14C22C38/26C22C38/28C22C38/32C22C38/34C22C38/60H01F1/16C21D8/12C22C38/18H01F1/147
Inventor 增本庆千叶政道
Owner KOBE STEEL LTD
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