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A kind of preparation method of silver tin oxide electrical contact material

An electrical contact material, silver tin oxide technology, used in contacts, circuits, electrical switches, etc., can solve the problems of high arc energy, inability to meet the requirements of AC contactors and relays, short electrical life, etc. Arc energy, the effect of promoting the reaction of silver, and improving the wetting performance

Active Publication Date: 2022-07-12
浙江耐迩合金科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a preparation method of silver tin oxide electrical contact material to solve the problems of high arc energy and short electrical life in the silver tin oxide electrical contact material prepared in the prior art, which cannot meet the requirements of AC contactors and relays, etc. Requirements for the use of electrical equipment

Method used

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  • A kind of preparation method of silver tin oxide electrical contact material
  • A kind of preparation method of silver tin oxide electrical contact material
  • A kind of preparation method of silver tin oxide electrical contact material

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preparation example Construction

[0030] In an embodiment, the preparation method of the silver tin oxide electrical contact material comprises the following steps:

[0031] S1: In parts by weight, it includes the following raw materials: 63-72 parts of silver powder, 16-28 parts of tin powder, 1-2 parts of graphite powder, 0.3-0.5 parts of europium powder, 2-4 parts of rubidium carbonate powder, copper powder 6-8 parts of bismuth powder, 3-5 parts of bismuth powder, and 2.7-5.6 parts of molybdenum carbide powder are put into a smelting furnace for smelting, and the alloy powder is obtained after water atomization;

[0032] The particle size of the silver powder is 0.2-13.3 μm;

[0033] The particle size of the tin powder is 0.5-11.8 μm;

[0034] The particle size of the graphite powder is 1.2-10.3 μm;

[0035] The particle size of the europium powder is 1.2-3.4 μm;

[0036] The particle size of the rubidium carbonate powder is 0.7-5.2 μm;

[0037] The particle size of the copper powder is 0.9-8.5 μm;

[...

Embodiment 1

[0046] A preparation method of silver tin oxide electrical contact material, comprising the following steps:

[0047] S1: in parts by weight, it includes the following raw materials: 65 parts of silver powder, 17 parts of tin powder, 1 part of graphite powder, 0.3 part of europium powder, 2 parts of rubidium carbonate powder, 6 parts of copper powder, 3 parts of bismuth powder, molybdenum carbide 2.8 parts of powder are put into the melting furnace and smelted, and the alloy powder is obtained after water atomization;

[0048] The particle size of the silver powder is 0.5-13.1 μm;

[0049] The particle size of the tin powder is 0.9-10.2 μm;

[0050] The particle size of the graphite powder is 1.6-10.2 μm;

[0051] The particle size of the europium powder is 1.7-3.2 μm;

[0052] The particle size of the rubidium carbonate powder is 0.8-4.5 μm;

[0053] The particle size of the copper powder is 1.1-8.3 μm;

[0054] The particle size of the bismuth powder is 0.5-7.2 μm;

[...

Embodiment 2

[0061] A preparation method of silver tin oxide electrical contact material, comprising the following steps:

[0062] S1: In parts by weight, it includes the following raw materials: 70 parts of silver powder, 26 parts of tin powder, 2 parts of graphite powder, 0.5 part of europium powder, 3.7 parts of rubidium carbonate powder, 8 parts of copper powder, 5 parts of bismuth powder, molybdenum carbide 5.4 parts of powder were put into a melting furnace for smelting, and the alloy powder was obtained after water atomization;

[0063] The particle size of the silver powder is 1-11 μm;

[0064] The particle size of the tin powder is 0.7-10.1 μm;

[0065] The particle size of the graphite powder is 1.4-9.8 μm;

[0066] The particle size of the europium powder is 1.7-3.1 μm;

[0067] The particle size of the rubidium carbonate powder is 0.9-5 μm;

[0068] The particle size of the copper powder is 0.9-6.4 μm;

[0069] The particle size of the bismuth powder is 0.6-5.9 μm;

[007...

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Abstract

The invention discloses a preparation method of a silver tin oxide electrical contact material, which comprises the following steps: (1) putting raw materials into a smelting furnace for smelting, and atomizing with water to obtain alloy powder; (2) putting the alloy powder into Drying in a microwave oven, and then oxidizing the alloy powder in a microwave oven to obtain an oxidized alloy powder; (3) The oxidized alloy powder is made into an ingot; (4) The ingot is sintered in an oxygen pressure atmosphere to obtain a sintered ingot (5) The sintered ingot is pressed into wire, the wire is used for cold heading rivet contact, the sheet is rolled and punched to produce sheet contact, and silver tin oxide electrical contact material is obtained. The silver tin oxide electrical contact material prepared by the invention has low arc energy, long electrical life, simple designed process route, high material utilization rate and short production cycle, is suitable for large-scale production, and can be vigorously popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of electrical contact material preparation, and in particular relates to a preparation method of a silver tin oxide electrical contact material. Background technique [0002] In the prior art, the methods for preparing silver tin oxide electrical contact materials include chemical method, powder mixing method, internal oxidation method and pre-oxidation method, wherein the pre-oxidation method has the characteristics of uniform distribution of oxide particles, simple processing technology and short process. Promote the application. [0003] The traditional heating method for preparing silver tin oxide electrical contact materials is to heat the surrounding environment, firstly heating the surface of the object by means of heat radiation or through hot air convection, and then conducting heat conduction to the inside of the object. This method exists. The problem of long heating time and low efficiency. In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C5/06C22C32/00C22C1/05C22C1/10H01H1/0237
CPCC22C5/06C22C32/0005C22C1/058H01H1/0237Y02P20/10
Inventor 陈春洪林常
Owner 浙江耐迩合金科技有限公司
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