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Novel silver alloy electrical contact material

A technology of electrical contact materials and alloy materials, applied in contacts, circuits, electrical switches, etc., can solve the problems of unsatisfactory use effect, low hardness, strength, and long service life, and achieve excellent arc extinguishing performance, manufacturing The method is simple and the effect of prolonging the service life

Inactive Publication Date: 2009-08-19
SINO PLATINUM METALS CO LTD
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  • Abstract
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Problems solved by technology

However, in the application, it was found that the hardness and strength of the Ag-Ce alloy were not high, resulting in poor wear resistance. When used as a jog contact for switches and household appliances, it was prone to cracks and the service life was not long; when used as a cladding layer When the material is made of composite material and used for sliding contacts of commutators, rotary switches, etc., the effect is not ideal

Method used

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  • Novel silver alloy electrical contact material

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Embodiment Construction

[0012] The alloys of Examples 1-3 of the present invention were prepared according to the composition shown in Table 1.

[0013] 1. The raw materials with the purity of Ag≥99.99%, Ce≥99.95%, and Cu≥99.99% are mixed according to the composition ratio. First, put Ag and Cu into the intermediate frequency furnace for melting to alloy them. After degassing, add Ce and melt for a while Cast into ingots after the alloy composition is uniform;

[0014] 2. In order to eliminate ingot segregation, the alloy needs to be kept at 600°C for 3 hours to make it homogeneous;

[0015] 3. The forming processing method is: hot rolling or hot forging→surface treatment→intermediate rolling→600℃ / 0.5h intermediate annealing (vacuum)→finish rolling or fine drawing into sheet or filament products to the specifications required by the manufacturer.

[0016] Table 1 Properties of silver alloys

[0017]

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Abstract

The invention relates to ternary silver alloy of silver, copper and cerium, in particular to breaking contact and sliding contact alloy material of medium and small-load low-voltage electrical appliances. The alloy material contains 3 percent to 10 percent of Cu, 0.3 percent to 0.7 percent of Ce and the rest percent of Ag according to weight. The material has good electrical contact performance and long service life and can respectively serve as the breaking contact and sliding contact alloy material so as to be applied to the medium and small-load low-voltage electrical appliances.

Description

technical field [0001] The invention relates to a ternary silver alloy of silver, copper and cerium, in particular to alloy materials for breaking contacts and sliding contacts of low-voltage electric appliances with medium and small loads. Background technique [0002] The silver-copper alloy has good electrical and thermal conductivity, and the addition of copper can improve the strength, hardness and wear resistance of the silver matrix, and reduce the tendency of welding, so that it has better electrical contact performance. Silver-copper alloys are widely used as medium-duty relays, contacts of contactors and switches, conductive ring materials for aviation and navigation instruments, and sliding contact materials such as knob switches. It is one of the most widely used silver-based electrical contact materials. Representative materials are Ag-3Cu, Ag-5Cu, Ag-10Cu and so on. However, in industrial atmospheres, especially in high temperature, high humidity, and sulfur a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H1/023H01H1/025H01H11/04C22C5/08C22C1/02C22F1/08
Inventor 贺晓燕周世平王健乔勋王光庆顾彬毛端谢宏潮阳岸恒
Owner SINO PLATINUM METALS CO LTD
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