High-performance silver cadmium oxide material and manufacturing method thereof

A technology of silver cadmium oxide and a manufacturing method, applied in the directions of contacts, electrical components, electrical switches, etc., can solve the problems of inability to adapt to the working environment, unreachable electrical life, high production costs, and improve oxidation resistance and arc resistance. The effect of burn-out capability, low manufacturing cost, and low equipment and production requirements

Active Publication Date: 2010-07-14
SHANGHAI LONGSUN ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because its production process needs to process the smelted raw materials into chips, the process is relatively complicated and the production cost is high
At the same time, it is oxidized to form silver cadmium oxide immediately after being processed into debris, so this silver cadmium oxide cannot adapt to the harsher working environment and the electrical life often does not meet the use requirements.

Method used

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  • High-performance silver cadmium oxide material and manufacturing method thereof
  • High-performance silver cadmium oxide material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 91.1% of silver, 8.75% of cadmium, 0.1% of nickel, 0.01% of tin, and 0.05% of rare earth mixture are used for batching; the rare earth mixture contains 65% of yttrium, and 35% of lanthanum and cerium mixture. Place the prepared material in a medium frequency induction furnace for smelting for 0.5-2 hours; then cast it into an ingot. Put the ingot into the medium frequency induction furnace to preheat for 2-6 hours, the preheating temperature is 600-900°C; then use a 930T extruder to extrude the ingot into a thick wire with a diameter of Φ4mm-Φ8mm, and the pressure is 10-30MPa . Then use the wire drawing die to draw the thick wire into a wire with a diameter of Φ1.0mm-Φ4.0mm. Then use an internal oxidation furnace to pre-oxidize the wire rod formed by drawing. The pre-oxidation temperature is 600-800°C and the oxygen pressure is 1-6ka / cm 2 , the pre-oxidation time is 8-20 hours. The pre-oxidized wire is cut into small pieces and pressed into ingots with an extruder. ...

Embodiment 2

[0035] According to the ratio of silver 89.3%, cadmium 10.5%, nickel 0.05%, tin: 0.05%, rare earth 0.1%, the rare earth mixture contains 70% yttrium, lanthanum and cerium mixture 30%. Place the prepared material in a medium frequency induction furnace for smelting for 0.5-2 hours; then cast it into an ingot. Put the ingot into the medium frequency induction furnace to preheat for 2-6 hours, the preheating temperature is 600-900°C; then use a 930T extruder to extrude the ingot into a thick wire with a diameter of Φ4mm-Φ8mm, and the pressure is 10-30MPa . Then use a wire drawing die to draw the thick wire into a wire with a diameter of Φ1.0mm-Φ4.0mm. Then use an internal oxidation furnace to pre-oxidize the wire rod formed by drawing. The pre-oxidation temperature is 600-800°C and the oxygen pressure is 1-6ka / cm 2 , the pre-oxidation time is 8-20 hours. The pre-oxidized wire is cut into small pieces and pressed into ingots with an extruder. Finally, use the wire drawing die ...

Embodiment 3

[0037] According to the ratio of 85.97% silver, 13.13% cadmium, 0.2% nickel, 0.5% tin, and 0.2% rare earth, the rare earth mixture contains 80% yttrium and 20% lanthanum and cerium mixture. Place the prepared material in a medium frequency induction furnace for smelting for 0.5-2 hours; then cast it into an ingot. Put the ingot into the medium frequency induction furnace to preheat for 2-6 hours, the preheating temperature is 600-900°C; then use a 930T extruder to extrude the ingot into a thick wire with a diameter of Φ4mm-Φ8mm, and the pressure is 10-30MPa . Then use a wire drawing die to draw the thick wire into a wire with a diameter of Φ1.0mm-Φ4.0mm. Then use an internal oxidation furnace to pre-oxidize the wire rod formed by drawing. The pre-oxidation temperature is 600-800°C and the oxygen pressure is 1-6ka / cm 2 , the pre-oxidation time is 8-20 hours. The pre-oxidized wire is cut into small pieces and pressed into ingots with an extruder. Finally, use the wire drawin...

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Abstract

The invention relates to a high-performance silver cadmium oxide material and a manufacturing method thereof, which are characterized in that the silver cadmium oxide material comprises the following components: 85 to 97 percent of silver, 2 to 15 percent of cadmium, 0.01 to 0.5 percent of nickel, 0.01 to 1 percent of tin and 0.01 to 0.5 percent of rear earth mixture. The manufacturing method of the high-performance silver cadmium oxide material is characterized in that: a given quantity of silver, cadmium, nickel, tin and rare earth mixture are measured to be arranged inside a middle-frequency induction furnace to be smelted and cast, the cast ingot is extruded by an extruding machine to be thick wires, the thick wires are stretched by a wire-drawing die to be thin wires, the thin wires are pre-oxidized by an internal oxidization furnace, then the thin wires are cut and preformed and finally is processed and formed. The anti-oxidization performance, electric-arc burning loss resistance and the abrasion resistance of the silver cadmium oxide material are improved, and the service life is prolonged, so the high-performance silver cadmium oxide material can be applied to different working environments, has low production cost, simple manufacturing method and low requirements on the device and the production.

Description

technical field [0001] The invention relates to a high-performance silver cadmium oxide material and a manufacturing method thereof. Background technique [0002] Electrical contacts are important components of circuit breakers, switch cabinets, disconnectors, and grounding switches, and their performance directly affects the quality and service life of these electrical appliances. At present, silver-based materials are mainly used for electrical contacts. Silver-based materials not only have good electrical and thermal conductivity, but also have certain electrical corrosion resistance. However, due to the low hardness of pure silver, poor wear resistance, and high price; therefore, metal oxides are generally added to the silver base as the second phase during production. Silver cadmium oxide has good performance due to its good welding resistance, arc burn resistance and wear resistance, and the applicable voltage ranges from several volts to thousands of volts. Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H1/0237H01H11/04C22C5/10
Inventor 郑元龙郑大受兰慧
Owner SHANGHAI LONGSUN ALLOY CO LTD
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