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

A complex brass, automotive technology, applied in the field of complex brass for high-strength wear-resistant automotive synchronizing rings, can solve the problems of unstable structure, high metal consumption, uneven material composition, etc., to improve self-lubricating performance, good plasticity and The effect of toughness and stable tissue properties

Inactive Publication Date: 2010-05-12
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

[0016] The composition of each component is: Cu: 62.00%, Al: 1.80%, Mn: 2.50%, Si: 1.00%, Cr: 0.15%, Ni: 0.30%, Fe: 0.50%, Pb: 0.15%, Zn: 31.57%, impurity 0.03%. The Rockwell hardness HRB value of the complex brass is greater than or equal to 90, the HV30 value is greater than or equal to 200; the tensile strength is greater than or equal to 550MPa; the yield strength is greater than or equal to 300MPa; and the elongation is greater than or equal to 15%.

Embodiment 2

[0018] The composition of each component is: Cu: 60.00%, Al: 2.20%, Mn: 3.10%, Si: 1.10%, Cr: 0.22%, Ni: 0.50%, Fe: 0.30%, Pb: 0.12%, Zn: 32.42%, impurity 0.04%. The Rockwell hardness HRB value of the complex brass is greater than or equal to 95, the HV30 value is greater than or equal to 200, the tensile strength is greater than or equal to 600MPa, the yield strength is greater than or equal to 350MPa, and the elongation is greater than or equal to 18%.

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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: 59-65% of Cu, 1.7-3.7% of Al, 2.2-3.8% of Mn, 0.5-1.3% of Si, 0.07-0.27% of Cr, 0.2-0.6% of Ni, less than or equal to 0.6% of Fe, less than or equal to 0.18% of Pb, and the balance of Zn and less than 0.05% of impurities. The complex brass 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 used for a high-strength and wear-resistant automobile synchronizing ring. Background technique [0002] At present, the material of automobile synchronization ring is mainly composed of complex brass. Automobile synchronizing rings require materials with stable physical properties, wear resistance and strength to meet certain requirements. Domestic complex brass production mainly meets domestic low-end models. The production process includes horizontal continuous casting tube, centrifugal casting tube and semi-continuous casting-horizontal extrusion, among which horizontal continuous casting and extrusion account for almost half. However, the above process There are defects such as uneven material composition, high metal consumption, and unstable structure and performance. At the same time, due to domestic equipment, the inclusion defects of the produced materials are mo...

Claims

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Application Information

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Patent Type & Authority Applications(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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