CN103617897A - Novel three-layer silver / copper bimetallic composite electric contact material - Google Patents
Novel three-layer silver / copper bimetallic composite electric contact material Download PDFInfo
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- CN103617897A CN103617897A CN201310450478.XA CN201310450478A CN103617897A CN 103617897 A CN103617897 A CN 103617897A CN 201310450478 A CN201310450478 A CN 201310450478A CN 103617897 A CN103617897 A CN 103617897A
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Abstract
The invention discloses a novel three-layer silver / copper bimetallic composite electric contact material. The material comprises an upper silver alloy plate, a lower silver alloy plate, and a copper alloy plate which is arranged therebetween. The silver alloy comprises chemical compositions in percentage by weight as follows: 90% of Ag, 5% of Au, and 5% of Ni. The copper alloy comprises the chemical compositions in percentage by weight as follows: 80% of Cu, and 20% of Ni. The material has a three-layer sandwich structure, and the layers are connected with high strength and can withstand high-strength subsequent machining without cracking; a large amount of the silver alloy is saved and the cost is reduced; and the electrical appliances enterprise is facilitated to reduce the cost and to improve the production efficiency.
Description
Technical field
The present invention is a kind of novel three layers of silver/copper bi-metal composite electric contact material, belongs to metallic composite field.
Background technology
On certain type high-power electric appliance, need a large amount of electrical contacts, the technical indicator of this electrical contact is: heating power 3KW, and 50～90 ℃ of temperature, be more than 5000 times useful life.In order to reach the strict technical indicator of this electrical contact, with argentiferous degree, up to 88% silver alloy, manufacture such electrical contact for a long time, cause consuming in manufacturing process a large amount of Precious Metals Resources, and expend huge.
In order to reduce cost and waste, manufacturer attempt to adopt compound, the method such as rolling is compound, soldering is compound, high temperature insostatic pressing (HIP) is compound of colding pressing, attempting to prepare a kind of inside is that copper, skin are silver-colored composite electric contact material, but, the combined strength bination of bimetallic material prepared by said method is inadequate, follow-uply all ftractureing in rolling thin process, the multiple unequal problem of layer thickness, can not reach original technical indicator.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, the object of this invention is to provide a kind of novel three layers of silver/copper bi-metal composite electric contact material, reduce in manufacture process noble metal consumption and reduce costs.
In order to realize foregoing invention object, the technical solution used in the present invention is:
A kind of novel three layers of silver/copper bi-metal composite electric contact material are comprised of upper and lower two-layer silver alloy plate (2), (5) and middle copper alloy plate (4).Wherein silver alloy resistance to oxidation, good conductivity, can stand long-term power on/off test, and useful life is longer; Inner copper alloy layer can bear the electric current of large flux, and plays support structure effect, and it is cheap, and this composite material has inexpensive and feature long service life.The chemical composition of silver alloy: Ag:90%, Au:5%, Ni:5%.The chemical composition Cu:80% of copper alloy, Ni:20%.
The preparation method of this material is:
(1) with emery wheel and polishing machine, the surface finish of three-ply metal is polished to surface roughness Ra < 6nm.
(2) three-ply metal is positioned on ground successively, it is sequentially lower silver alloy plate (2), copper alloy plate (4) and upper silver alloy plate (5), centre is put separation material (3) each layer is supported, the Bing the superiors lay explosive (6), the upper detonator (7) of inserting, lights detonator (7), and ignition charge (6) produces detonation wave, promote each layer and clash into successively, make three-ply metal be combined into clad metal sheet.
(3) detonation wave impacts the stress staying to metallic plate when eliminating explosive welding, and preferably suitable annealing temperature, puts into heat-treatment furnace by this clad metal sheet and anneal.
(4) this metallic composite offseted, rolls thin and anneal for the second time.
(5), by this composite metal plate deburring, school shape, pickling and polishing, can make a kind of novel three layers of silver/copper bi-metal composite electric contact material.
Beneficial effect of the present invention: the feature of maximum of the present invention is the electric connection of having prepared three-layer sandwich structure, and compound solution of exploding prepared three layers of not high shortcoming of composite wood electric connection bond strength, saved a large amount of silver alloy, reduced cost, be conducive to electrical company and reduce costs, improve productivity effect.
Accompanying drawing explanation
Fig. 1 is novel three layers of silver/copper bi-metal composite electric contact material structural representation.
Fig. 2 is novel three layers of silver/copper bi-metal composite electric contact material preparation facilities schematic diagram.
Embodiment
Embodiment 1:
The object of this invention is to provide a kind of novel three layers of silver/copper bi-metal composite electric contact material, reduce in manufacture process noble metal consumption and reduce costs.
In order to realize foregoing invention object, the technical solution used in the present invention is:
A kind of novel three layers of silver/copper bi-metal composite electric contact material are comprised of upper and lower two-layer silver alloy plate (2), (5) and middle copper alloy plate (4).Wherein silver alloy resistance to oxidation, good conductivity, can stand long-term power on/off test, and useful life is longer; Inner copper alloy layer can bear the electric current of large flux, and plays support structure effect, and it is cheap, and this composite material has inexpensive and feature long service life.The chemical composition of silver alloy: Ag:90%, Au:5%, Ni:5%.The chemical composition Cu:80% of copper alloy, Ni:20%.
The preparation method of this material is:
(1) with emery wheel and polishing machine, the surface finish of three-ply metal is polished to surface roughness Ra < 6nm.
(2) three-ply metal is positioned on ground successively, it is sequentially lower silver alloy plate (2), copper alloy plate (4) and upper silver alloy plate (5), centre is put separation material (3) each layer is supported, the Bing the superiors lay explosive (6), the upper detonator (7) of inserting, lights detonator (7), and ignition charge (6) produces detonation wave, promote each layer and clash into successively, make three-ply metal be combined into clad metal sheet.
(3) detonation wave impacts the stress staying to metallic plate when eliminating explosive welding, and preferably suitable annealing temperature, puts into heat-treatment furnace by this clad metal sheet and anneal.
(4) this metallic composite offseted, rolls thin and anneal for the second time.
(5), by this composite metal plate deburring, school shape, pickling and polishing, can make a kind of novel three layers of silver/copper bi-metal composite electric contact material.
Beneficial effect of the present invention: the feature of maximum of the present invention is the electric connection of having prepared three-layer sandwich structure, and solved and prepared three layers of not high shortcoming of composite wood electric connection bond strength, saved a large amount of silver alloy, reduced cost, be conducive to electrical company and reduce costs, improve productivity effect.
Through check, these novel three layers of silver/copper bi-metal composite electric contact material interfacial bonding strengths can reach 285MPa, can stand follow-up machine work, as roll thin, stretch and cut out, prepared electrical contact is above standard the life-span in useful life, is a kind of qualified NEW TYPE OF COMPOSITE electrical contact material.
Claims (4)
1. novel three layers of silver/copper bi-metal composite electric contact material, is characterized in that these novel three layers of silver/copper bi-metal composite electric contact materials are comprised of upper and lower two-layer silver alloy plate and middle copper alloy plate (4).Wherein silver alloy resistance to oxidation, good conductivity, can stand long-term power on/off test, and useful life is longer; Inner copper alloy layer can bear the electric current of large flux, and plays support structure effect, and it is cheap.
2. a kind of novel three layers of silver/copper bi-metal composite electric contact material according to claim 1, is characterized in that: the chemical composition of described silver alloy: Ag:90%, Au:5%, Ni:5%.
3. a kind of novel three layers of silver/copper bi-metal composite electric contact material according to claim 1, is characterized in that: the chemical composition Cu:80% of described copper alloy, Ni:20%.
4. a kind of nickel base superalloy/titanium alloy composite material for aero-engine according to claim 1, is characterized in that its preparation method comprises following content:
(1) with emery wheel and polishing machine, the surface finish of three-ply metal is polished to surface roughness Ra < 6nm.
(2) three-ply metal is positioned on ground successively, it is sequentially lower silver alloy plate (2), copper alloy plate (4) and upper silver alloy plate (5), centre is put separation material (3) each layer is supported, the Bing the superiors lay explosive (6), the upper detonator (7) of inserting, lights detonator (7), and ignition charge (6) produces detonation wave, promote each layer and clash into successively, make three-ply metal be combined into clad metal sheet.
(3) detonation wave impacts the stress staying to metallic plate when eliminating explosive welding, and preferably suitable annealing temperature, puts into heat-treatment furnace by this clad metal sheet and anneal.
(4) this metallic composite offseted, rolls thin and anneal for the second time.
(5), by this composite metal plate deburring, school shape, pickling and polishing, can make a kind of novel three layers of silver/copper bi-metal composite electric contact material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310450478.XA CN103617897A (en) | 2013-09-29 | 2013-09-29 | Novel three-layer silver / copper bimetallic composite electric contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310450478.XA CN103617897A (en) | 2013-09-29 | 2013-09-29 | Novel three-layer silver / copper bimetallic composite electric contact material |
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| CN103617897A true CN103617897A (en) | 2014-03-05 |
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| CN201310450478.XA Pending CN103617897A (en) | 2013-09-29 | 2013-09-29 | Novel three-layer silver / copper bimetallic composite electric contact material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537562A (en) * | 2015-12-21 | 2016-05-04 | 河南师范大学 | Method for preparing ferromagnetism-free and high-strength texture copper-nickel alloy composite substrate |
| CN107803633A (en) * | 2017-11-07 | 2018-03-16 | 武汉钢铁有限公司 | A kind of electrode composite plate and manufacture method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4345130A (en) * | 1979-12-21 | 1982-08-17 | Tokyo Shibaura Denki Kabushiki Kaisha | Electrical contact |
| CN101778684A (en) * | 2007-09-07 | 2010-07-14 | E.I.内穆尔杜邦公司 | Multi-element alloy powder containing silver and at least two non-silver containing elements |
| CN102668006A (en) * | 2009-10-18 | 2012-09-12 | 三菱综合材料C.M.I.株式会社 | Electrical contact for relay, and manufacturing method thereof |
| CN202639757U (en) * | 2011-08-31 | 2013-01-02 | 南京三邦金属复合材料有限公司 | Large-sized non-ferrous metal explosive cladding steel plate |
| CN103135819A (en) * | 2011-11-29 | 2013-06-05 | 迎辉科技股份有限公司 | Conductive substrate with oxidation resistant metal layer |
-
2013
- 2013-09-29 CN CN201310450478.XA patent/CN103617897A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4345130A (en) * | 1979-12-21 | 1982-08-17 | Tokyo Shibaura Denki Kabushiki Kaisha | Electrical contact |
| CN101778684A (en) * | 2007-09-07 | 2010-07-14 | E.I.内穆尔杜邦公司 | Multi-element alloy powder containing silver and at least two non-silver containing elements |
| CN102668006A (en) * | 2009-10-18 | 2012-09-12 | 三菱综合材料C.M.I.株式会社 | Electrical contact for relay, and manufacturing method thereof |
| CN202639757U (en) * | 2011-08-31 | 2013-01-02 | 南京三邦金属复合材料有限公司 | Large-sized non-ferrous metal explosive cladding steel plate |
| CN103135819A (en) * | 2011-11-29 | 2013-06-05 | 迎辉科技股份有限公司 | Conductive substrate with oxidation resistant metal layer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105537562A (en) * | 2015-12-21 | 2016-05-04 | 河南师范大学 | Method for preparing ferromagnetism-free and high-strength texture copper-nickel alloy composite substrate |
| CN107803633A (en) * | 2017-11-07 | 2018-03-16 | 武汉钢铁有限公司 | A kind of electrode composite plate and manufacture method |
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Application publication date: 20140305 |