High-strength wear-resistant complex brass for automotive synchronizing ring

A complex brass and automotive technology, which is applied in the field of complex brass for high-strength wear-resistant automotive synchronous rings, can solve the problems of uneven material composition, high metal consumption, and unstable structure and performance, and achieve stable structure and performance, good plasticity and Effect of toughness and material composition uniformity

Active Publication Date: 2011-11-23
苏州撼力合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic production of complex brass mainly meets domestic low-end car models. The production processes include horizontal continuous casting tubes, centrifugal casting tubes, and semi-continuous casting-horizontal extrusion, among which horizontal continuous casting and extrusion account for almost half. However, the above-mentioned processes There are defects such as uneven material composition, high metal consumption, and unstable tissue performance. At the same time, due to domestic equipment, the inclusion defects of the produced materials are more serious than imported materials, which greatly affects the quality of the synchronization ring, and it cannot replace imported ones. Localization process of high-end models

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The composition of each component by weight percentage is: Cu: 55.00%, Al: 3.50%, Fe: 0.80%, Ni: 7.00%, Si: 2.00%, Zn: 31.68% and impurity 0.05%. The hardness HB value of the brass is greater than or equal to 260, and the HV50 value is greater than or equal to 280; the tensile strength is greater than or equal to 850MPa; the yield strength is greater than or equal to 750MPa; and the elongation is greater than or equal to 3.5%.

Embodiment 2

[0016] The composition of each component by weight percentage is: Cu: 56.00%, Al: 4.50%, Fe: 0.70%, Ni: 6.00%, Si: 2.20%, Zn: 30.56% and impurity 0.04%. The hardness HB value of the brass is greater than or equal to 230, and the HV50 value is greater than or equal to 250; the tensile strength is greater than or equal to 900MPa; the yield strength is greater than or equal to 780MPa; and the elongation is greater than or equal to 3.8%.

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PUM

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Abstract

The invention discloses a high-strength wear-resistant complex brass for an automotive synchronizing ring, which comprises the following components in percentage by weight: 54-56% of Cu, 3.0-4.5% of Al, 0.5-1.0% of Fe, 6.0-7.5% of Ni, 2.0-2.5% of Si, and the balance of Zn and less than 0.05% of impurities. The complex brass also has good plasticity and toughness under the conditions of high strength, high hardness and high wear resistance.

Description

technical field [0001] The invention relates to a complex brass alloy, in particular to a complex brass for a high-strength wear-resistant automobile synchronous ring. Background technique [0002] At present, the materials of automobile synchronizing rings are mainly complex brass. The automotive synchronous ring requires that the physical properties of the material are stable, and the wear resistance and strength meet certain requirements. Domestic production of complex brass mainly meets domestic low-end car models. The production processes include horizontal continuous casting tubes, centrifugal casting tubes, and semi-continuous casting-horizontal extrusion, among which horizontal continuous casting and extrusion account for almost half. However, the above-mentioned processes There are defects such as uneven material composition, high metal consumption, and unstable tissue performance. At the same time, due to domestic equipment, the inclusion defects of the produced m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04
Inventor 赵祥伟王勇王宏
Owner 苏州撼力合金股份有限公司
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