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Sliver-oxide ternary alloy electrical contact material and production method thereof

An electrical contact material, ternary oxidation technology, applied in metal material coating process, circuit, electric switch, etc., can solve the unsatisfactory welding and electrical loss, and the processing difficulty of silver tin oxide composite material , surface contact resistance increase and other problems, to improve the electrical contact performance, improve the ability to resist arc erosion, and reduce the effect of contact resistance

Inactive Publication Date: 2012-10-24
浙江乐银合金有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Although the overall performance of silver cadmium oxide is better, but in the material manufacturing, there is cadmium volatilization and the electric arc generated when the electrical appliance has a load is broken, and the cadmium vaporizes to release cadmium poison. Materials are phased out gradually
[0005] (2) Although silver tin oxide has good welding resistance and stability, it is easy to form an oxide film on the surface of the electrical contact during use, which increases the surface contact resistance and accelerates the temperature rise
In addition, due to the high hardness of tin oxide, the processing of silver tin oxide composite materials is difficult.
[0006] (3) Silver copper oxide electrical contact material has low surface contact resistance, low and stable temperature rise, but it does not have fully satisfactory characteristics in terms of welding and electrical loss
[0007] (4) The silver zinc oxide contact material has excellent welding resistance, good arc corrosion resistance, low and stable contact resistance, but the silver and zinc oxide in the silver zinc oxide contact material wet each other Poor resistance leads to poor electrical wear resistance of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1: Silver-oxide ternary alloy (12±1).

[0051] 1. According to the percentage of the total mass, 0.8% of magnesium, 0.06% of cerium, 0.25% of nickel, and the balance of silver are used, and silver and additive elements are successively added into the furnace at a temperature of 1100 ° C in an intermediate frequency vacuum melting furnace to melt into an alloy The melt is cast to form the first alloy ingot after being completely alloyed and refined;

[0052] 2. According to the percentage of the total mass, the ratio of copper 3.56%, tin 3%, and zinc 3% is added in the intermediate frequency vacuum melting furnace, and copper, tin, and zinc are successively added to the furnace and smelted at a temperature of 1200 ° C to form an alloy melt. Casting after complete alloying and refining to form the second alloy ingot.

[0053] 3. Put the alloy ingots of 1 and 2 into an intermediate frequency vacuum melting furnace and melt them at a temperature of 1250°C to form a...

Embodiment 2

[0058] Example 2: Silver-oxide ternary alloy (15±1).

[0059] 1. According to the percentage of the total mass, 0.8% of calcium, 0.08% of lanthanum, 0.25% of bismuth, and the balance of silver are used, and the silver and additive elements are successively added to the furnace at a temperature of 1100°C in an intermediate frequency vacuum melting furnace to melt into an alloy The melt is cast to form the first alloy ingot after being completely alloyed and refined;

[0060] 2. According to the percentage of the total mass, the ratio of copper 4%, tin 5%, and zinc 3% is added in the intermediate frequency vacuum melting furnace, and copper, tin, and zinc are successively added to the furnace and melted at a temperature of 1200°C to form an alloy melt. Casting after complete alloying and refining to form the second alloy ingot.

[0061] 3. Put the alloy ingots of 1 and 2 into an intermediate frequency vacuum melting furnace and melt them at a temperature of 1250°C to form...

Embodiment 3

[0066] Embodiment 3: Silver-oxide ternary alloy (13±1).

[0067] 1. According to the percentage of the total mass, 0.8% of magnesium, 0.05% of cerium, 0.2% of nickel, and the balance of silver are used, and silver and additive elements are successively added into the furnace at a temperature of 1150°C in an intermediate frequency vacuum melting furnace to melt into an alloy The melt is cast to form the first alloy ingot after being completely alloyed and refined;

[0068] 2. According to the percentage of the total mass, the ratio of copper 4%, tin 4%, and zinc 2.34% is added in the intermediate frequency vacuum melting furnace, and copper, tin, and zinc are successively added to the furnace and melted at a temperature of 1200 ° C to form an alloy melt. Casting after complete alloying and refining to form the second alloy ingot.

[0069] 3. Put the ingots of 1 and 2 into the intermediate frequency vacuum melting furnace and melt them at a temperature of 1200°C to form a...

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Abstract

The invention discloses a sliver-oxide ternary alloy electrical contact material and a production method thereof. The sliver-oxide ternary alloy electrical contact material comprises, by weight percent, 6%-24% of total ternary alloy oxides, 0.72%-5% of total added element oxides, and the balance of silver. The production method includes smelting the raw materials to obtain ingots by stepwise smelting process or atomizing to produce alloy powder; performing rolling and temperature differential oxidation, or high energy ball milling and temperature differential oxidation; and performing isostatic pressing to obtain primary ingots, subjecting the primary ingots to sintering, hot re-pressing and hot extrusion to obtain wires or strips, and thereby obtaining highly dispersible organizational structure with even and small crystal grains. The obtained material is high in conductivity, low in temperature rise, high in welding resistance, high in arc suppressing and high in electric corrosion resistance, electrical life is prolonged greatly, advantages of comprehensive property are highlighted, and the demands of high-end low-voltage electric appliances are fully met.

Description

technical field [0001] The invention relates to an electric contact material and a preparation method thereof, in particular to a silver-oxide ternary alloy electric contact material and a preparation method thereof. Background technique [0002] Electrical contacts (points) are essential core components for various industrial and civil AC and DC contactors, circuit breakers, relays, transfer switches, wall switches, household appliances, and automotive appliances. The quality of its performance directly affects the success or failure of the electrical appliance, its service life and the reliability of safe operation. There are many types of electrical contact materials, but they are nothing more than two major types of silver-based alloys and copper-based alloys. Silver-based alloys can be divided into silver solid solution alloys and non-solid solution alloys, which are the so-called real silver alloys and fake silver alloys. alloy. The real silver alloy can be used dire...

Claims

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Application Information

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IPC IPC(8): C22C5/06C22C32/00C22C1/02C22F1/14C23C8/12B22F1/00B22F3/20B22F9/04C22C1/05H01H11/04
Inventor 郑晓杰张树堂陈建新黄仁平
Owner 浙江乐银合金有限公司
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