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Wear-resistant copper zinc alloy and mechanical device using same

A wear-resistant, copper-zinc technology, applied in the direction of mechanical equipment, anti-centrifugal force rotating parts, shafts and bearings, can solve the problem of increasing the aggressiveness of materials

Active Publication Date: 2019-11-12
IHI CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is described here that the wear resistance can be improved by dispersing hard particles, but if the amount of hard particles is too large, the attack on the opposing material will increase

Method used

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  • Wear-resistant copper zinc alloy and mechanical device using same
  • Wear-resistant copper zinc alloy and mechanical device using same
  • Wear-resistant copper zinc alloy and mechanical device using same

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Embodiment

[0068] Hereinafter, for an embodiment of one of the wear-resistant copper-zinc alloys according to the present disclosure, refer to figure 1 Be explained.

[0069] Such as figure 1 No.5, 6, 8-18, 22-26, in this embodiment, the wear-resistant copper-zinc alloy is a copper-zinc alloy containing 28-55% by mass of Zn (base material: refer to No. .1 to 4), a material containing at least one of P and Mn which is solid-dissolved in the matrix phase. Since Zn is cheaper than Cu, its content is increased, and its content makes the parent phase α phase, (α+β) phase, β phase or (β+γ) phase. For example, the Zn content is 28 to 55% by mass, typically 30, 40, 45 or 52% by mass.

[0070] As a method of improving wear resistance, a method of dispersing hard oxides and hard intermetallic compounds represented by alumina having a Vickers hardness of about 1500 HV or higher in the matrix phase is also used, However, in this embodiment, the hardness is increased by solid-solution of P and Mn...

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Abstract

This wear-resistant copper zinc alloy contains, in mass%, 28-55% of Zn and 0.5-2% of P, with the balance being made up of Cu and unavoidable impurities, while having a conductivity of 10-33% IACS anda hardness of 3.6[Zn] - 55 HBW or more, where [Zn] mass% is the content of Zn. Alternatively, this wear-resistant copper zinc alloy contains, in mass%, 40-55% of Zn and 1-6% of Mn, with the balance being made up of Cu and unavoidable impurities, while having a conductivity of 10-33% IACS and a hardness of 3.6[Zn] - 55 HBW or more, where [Zn] mass% is the content of Zn.

Description

technical field [0001] The present disclosure relates to a copper-zinc alloy excellent in wear resistance, and in particular, to a wear-resistant copper-zinc alloy capable of exhibiting wear resistance even against changes in a sliding surface. Background technique [0002] Copper alloys containing Zn (ie, copper-zinc alloys), including brass alloys, have not only excellent electrical conductivity but also high workability, and are used in various parts of electronic products. Among such copper-zinc alloys, there is known a particle-dispersed copper-zinc alloy in which wear-resistant particles are dispersed in a matrix for the purpose of improving the wear resistance with particular attention to mechanical properties. [0003] Patent Document 1 discloses hard particles made of compounds of Ti and / or Si and iron group metals such as Fe, Ni, and Co as a copper-zinc alloy for a dynamic pressure bearing bush and a thrust plate of a hard disk drive device. Dispersion-type brass ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C18/02F16C33/12
CPCC22C9/04C22F1/08F16C33/121C22C18/02F16C2202/04F16C2204/14
Inventor 山根正明江口逸夫新井真人新井勇多石岛睦己伊藤秀晴小笠原义仁藤井慎太朗萩野源次郎
Owner IHI CORP
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