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Sliding electrical contact material and electrical contact metal composite material

A metal composite material and sliding electrical contact technology, applied in the direction of circuits, connections, current collectors, etc., to achieve the effects of easy technology, good wear resistance, and increased production costs

Active Publication Date: 2010-03-24
CHONGQING CHUANYI AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the basis of AuAgCu and AuAgCuPd alloys, further adding rare earth elements and high melting point elements such as Zr and Cr to produce a new type of gold-containing electrical contact material with high wear resistance and anti-organic pollution, and the technology for DC motor commutators has not yet been developed. see the report

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The alloy used as the surface layer is the No. 1 alloy (Ag-60Au-4.35Cu-0.5Zr-0.15Y) in Table 1. Vacuum casting is used, and after hot forging at a temperature of 750 ° C, it is rolled and annealed for many times to reach the required level. Specifications. The grade of the middle layer is Ag-4Cu-1Pd-0.5Ni-0.15Ce alloy, which is vacuum melted and cast, cold forged after homogenization annealing at 800°C, and rolled to the required specifications after multiple rolling and annealing. The No. 1 alloy (Ag-60Au-4.35Cu-0.5Zr-0.15Y) used as the surface layer and the Ag-4Cu-1Pd-0.5Ni-0.15Ce ribbon alloy used as the middle layer are combined to form a ribbon cladding Material, the cladding material and the TU1 alloy (representing oxygen-free copper alloy) as the base material are inlaid and compounded to make a strip-composite material. The composite material is heat-treated at 650°C, and then rolled several times to obtain a three-layer composite material. Its overall thickne...

Embodiment 2

[0033] In the same way as in Example 1, the surface layer is alloy No. 2 in Table 1 (Ag-60Au-4.35Cu-0.5Cr-0.15Y thickness: 0.0009mm), and the grade is Ag-4Cu-1Pd-0.5Ni-0.15 The middle layer (thickness: 0.03mm) composed of Ce alloy and the base layer composed of TU1 constitute the mosaic composite material and are used in micro-motor.

Embodiment 3

[0035] In the same way as in Example 1, the surface layer is alloy No. 3 in Table 1 (Ag-60Au-4.35Cu-0.5Ta-0.15Y thickness: 0.0009mm), and the grade is Ag-4Cu-1Pd-0.5Ni-0.15 The middle layer (thickness: 0.03mm) composed of Ce alloy and the base layer composed of TU1 constitute the mosaic composite material and are used in micro-motor.

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Abstract

The invention discloses two Au-containing sliding electrical contact materials which respectively comprise the main components: Au, Ag, Cu and Y as well as Au, Ag, Cu, Pd and Y; and on that basis, thetwo materials are respectively added with one or more of the trace elements Zr, Cr, Ta and Ti, and the total content of the trace elements does not exceed 2%. The alloy has good wear resistance, arcresistant capability and organic pollution resistance, so as to be excellent sliding electrical contact material, thus being suitable for manufacturing a commutator of a DC motor.

Description

technical field [0001] The invention relates to a sliding electrical contact material, in particular to a gold-containing sliding electrical contact material with high wear resistance and a three-dimensional composite material composed of the material as the working layer, silver alloy as the middle layer, and copper or copper alloy as the base layer. layer composite material. Background technique [0002] The commutator is one of the core components of the micro-motor, and it forms a sliding electrical contact conductive couple with the brush sheet. During the working process, it bears the dual effects of sliding wear and arc erosion, and is also affected by various corrosive media in the ambient atmosphere. Therefore, the commutator material also needs to have good wear resistance, arc resistance and corrosion resistance while requiring good electrical conductivity. In most cases, silver and silver alloys meet these requirements for commutators. [0003] However, the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R39/20H01R39/04C22C5/02
Inventor 章应徐永红王勇向云贵李仲才
Owner CHONGQING CHUANYI AUTOMATION
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