CN1949423A - Electric contact - Google Patents
Electric contact Download PDFInfo
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- CN1949423A CN1949423A CN 200610154501 CN200610154501A CN1949423A CN 1949423 A CN1949423 A CN 1949423A CN 200610154501 CN200610154501 CN 200610154501 CN 200610154501 A CN200610154501 A CN 200610154501A CN 1949423 A CN1949423 A CN 1949423A
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- silver
- compound layer
- electrical contact
- silver compound
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Abstract
The invention relates to an electric contact used in electric appliance circuit. It includes contact neck, and head, and is formed by copper basal body and silver alloy compound layer. The silver compound layer is mixed by silver, rare earth mixture, character element mixture. And the thickness is 8-250um. Ce and lanthanum is contained in rare earth mixture. Character element mixture includes zirconium, bismuth, indium, and titanium. The chemical components weight ratio is 0.1-0.5% rare earth mixture, 0.05-0.3% character element, and the rest is silver. The invention saves silver series material 30-90%, and lowers cost. It is suitable for double sided electric contact, and has good arcing extinction ability, wear resistance ability, rigidity, heat emission and conductivity.
Description
Technical field
The present invention relates to contact, connection vital part in a kind of electrical equipment, the power supply circuits.Specifically, be a kind of electrical contact.
Background technology
The silver and the oxide of the cadmium arcing performance of going out is good, the domestic and international at present electrical contact that also generally adopts silver cadmium oxide material and copper cold-heading to process.In cadmium and the industrial cadmium with heavy metal lead element etc. can bring serious pollution to environment.Along with the development of society, the raising of people's living standard, people's environmental consciousness is more and more stronger, and is also more and more higher to environmental protection requirement.The electrical contact of making of silver cadmium oxide material has not met each side requirement, the particularly European Community and has prohibited use.But adopt other material electrical contact, electrical properties such as the metal transfer that forms in the arcing performance of going out, conductivity, contact resistance, galvanic corrosion, resistance to wear, fusing point, hardness, heat radiation can influence the useful life of electric equipment products.What have has also directly reduced technology, quality requirement.Adopt other processing technology to produce, as powder metallurgy, sintering and die casting, but its manufacture craft technology is comparatively complicated, and cost is higher to influence its range of application with the properties of product difference.Chinese patent, the patent No. be, 86206207, and name is called the patented technology of " silver layer is 10 microns to 50 microns a compound electrical contact ", utilizes the electrical contact material transfer characteristic, reduces silver thickness, reaches and saves silver-colored consumption, reduces cost.But during it used, electric current can only be controlled at below 10 amperes, and voltage also only adapts to the low voltage power supply system that is used for 12V and 24V, so its range of application is narrower.Another Chinese patent, the patent No. is 86107774, name is called " contact material comprising silver based metallic oxides with mixed rare earth metals " patented technology, can produce hardness height, intensity height, rapid heat dissipation, conduction well, anti-melting welding, contact resistance is low and stable, easily the silver based contact material of machine-shaping.Its defective is that consumption silver amount is big, and therefore, cost is corresponding higher.
Summary of the invention
The present invention's purpose is to disclose to society a kind ofly can avoid contaminated environment, again can be energy-conservation, and more can save silver consuming amount significantly, reduce cost, and the electrical contact of inexpensive thing U.S..
Technical scheme of the present invention is achieved in that
A kind of electrical contact comprises contact neck and head, it is characterized in that, whole contact is made of the silver compound layer of copper matrix, copper matrix surface; Silver compound layer mainly is made up of silver, mischmetal(l), characteristic element mixture, and its thickness is the 8-250 micron.
Mischmetal(l) in the described silver compound layer comprises cerium, lanthanum.Characteristic element mixture in the described silver compound layer comprises zirconium, bismuth, indium, titanium.
The chemical component weight percentage of described silver compound layer is mischmetal(l) 0.1-0.5%, characteristic element mixture 0.05-0.3%, and surplus is a silver metal.
The advantage of electrical contact of the present invention is:
Adopt cerium, lanthanum, zirconium, bismuth, indium, titanium elements in the silver compound layer, dumped cadmium, mercury, lead and other elements, avoided the defective of environmental pollution, become the electrical contact of environment-friendly type.
As matrix, silver compound layer is incorporated into the surface of copper matrix to electrical contact of the present invention with copper.Therefore, it can save more silver-colored based material, saves silver-colored based material and reaches 30-90%, thereby reduce product cost significantly.
Because the characteristic separately of cerium, lanthanum, zirconium, bismuth, indium, titanium elements makes electrical properties such as metal transfer that electrical contact of the present invention forms in the arcing performance of going out, conductivity, contact resistance, galvanic corrosion, resistance to wear, fusing point, hardness, heat radiation be superior.Guarantee the quality and the useful life of product.Especially a metal transfer difficult problem overcomes substantially, and contact resistance is like same fine silver.
Because silver compound layer is incorporated into the surface of copper matrix, electrical contact of the present invention is suitable for doing two-sided electrical contact most, and cost decreases is more remarkable.
Description of drawings
Fig. 1 is an embodiment of the invention electrical contact overall structure schematic diagram (broken section);
Fig. 2 is the overall structure schematic diagram (broken section) of the another kind of embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
Embodiment 1, and a kind of electrical contact of the present invention comprises electrical contact neck 3 (Fig. 1) and head 4.Whole electrical contact is made of the silver compound layer 1 of copper matrix 2, copper matrix surface; Silver compound layer mainly is made up of silver, mischmetal(l), characteristic element mixture, and its thickness is 250 microns.
Mischmetal(l) in the described silver compound layer comprises cerium, lanthanum.Characteristic element mixture in the described silver compound layer comprises zirconium, bismuth, indium, titanium.
The chemical component weight percentage of described silver compound layer is mischmetal(l) 0.1-0.2%, characteristic element mixture 0.05-0.2%, and surplus is a silver metal.
This product applicable to 30A/220V-380V to use on the ac electric apparatus such as interior lathe, communication, household electrical appliances and various high power relays.
Embodiment 2, and electrical contact comprises electrical contact neck 3 and head 4 ' (Fig. 2, the top is more flat).Whole contact is made of the silver compound layer 1 ' of copper matrix 2, copper matrix surface; Silver compound layer mainly is made up of silver, mischmetal(l), characteristic element mixture, and its thickness is 150 microns.
Mischmetal(l) in the described silver compound layer comprises cerium, lanthanum.Characteristic element mixture in the described silver compound layer comprises zirconium, bismuth, indium, titanium.
The chemical component weight percentage of described silver compound layer is mischmetal(l) 0.25-0.3%, characteristic element mixture 0.2-0.25%, and surplus is a silver metal.
This product is applicable to using on direct current, the ac electric apparatus such as all kinds of relays of all kinds of 5-12A/3-24V, lathe, communication, automobile, boats and ships, household electrical appliance
Mischmetal(l) in the described silver compound layer comprises cerium, lanthanum.Characteristic element mixture in the described silver compound layer comprises zirconium, bismuth, indium, titanium.
The chemical component weight percentage of described silver compound layer is mischmetal(l) 0.3-0.5%, characteristic element mixture 0.25-0.3%, and surplus is a silver metal.
This product has on the direct current, low-voltage electrical apparatus of electrical contact applicable to electronic toy, phone, miniature low power relay etc.On the milliampere level ac electric apparatus wider use value is arranged also.
The present invention adopts modern electrochemical process technology, will cover the surface of copper than thin silver alloy, and its bond strength reaches more than 99.8%.For guaranteeing every requirement on electric performance, in the electrical contact manufacture process, by using the mixture in the lattice of silver, to add rare earth metal and to have high temperature resistant, the electric arcing of going out, high lubrication property element, guarantee that the present invention uses reliable and has the electric life of length.
Claims (4)
1, a kind of electrical contact comprises contact neck and head, it is characterized in that, whole electrical contact is made of the silver compound layer of copper matrix, copper matrix surface; Silver compound layer mainly is made up of silver, mischmetal(l), characteristic element mixture, and its thickness is the 8-250 micron.
2, electrical contact as claimed in claim 1 is characterized in that, the mischmetal(l) in the described silver compound layer comprise cerium, lanthanum.
3, electrical contact as claimed in claim 1 is characterized in that, the characteristic element mixture comprises zirconium, bismuth, indium, titanium in the described silver compound layer.
As claim 1 or 2 or 3 described electrical contacts, it is characterized in that 4, the chemical component weight percentage of described silver compound layer is mischmetal(l) 0.1-0.5%, characteristic element mixture 0.05-0.3%, surplus is a silver metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101545010A CN100435251C (en) | 2006-11-03 | 2006-11-03 | Electric contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101545010A CN100435251C (en) | 2006-11-03 | 2006-11-03 | Electric contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1949423A true CN1949423A (en) | 2007-04-18 |
| CN100435251C CN100435251C (en) | 2008-11-19 |
Family
ID=38018896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101545010A Expired - Fee Related CN100435251C (en) | 2006-11-03 | 2006-11-03 | Electric contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100435251C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131315A (en) * | 2010-09-28 | 2011-07-20 | 施吉承 | Formula of electrode solution for electro-thermal film heating tube |
| CN102394185A (en) * | 2011-10-11 | 2012-03-28 | 杨晓厦 | Contact of relay |
| CN102394184A (en) * | 2011-08-15 | 2012-03-28 | 宁波福特继电器有限公司 | Contact of relay |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3123357A1 (en) * | 1981-06-12 | 1982-12-30 | Degussa Ag, 6000 Frankfurt | "ELECTRICAL CONTACT" |
| JP2834550B2 (en) * | 1989-08-02 | 1998-12-09 | 古河電気工業株式会社 | Sliding contact material for small current region and method of manufacturing the same |
| JPH05120940A (en) * | 1991-10-28 | 1993-05-18 | Chugai Electric Ind Co Ltd | Bimetal electric contact |
| CN1244446C (en) * | 2003-06-06 | 2006-03-08 | 重庆川仪一厂 | Composite electrical contact material |
-
2006
- 2006-11-03 CN CNB2006101545010A patent/CN100435251C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102131315A (en) * | 2010-09-28 | 2011-07-20 | 施吉承 | Formula of electrode solution for electro-thermal film heating tube |
| CN102131315B (en) * | 2010-09-28 | 2013-03-06 | 施吉承 | Formula of electrode solution for electro-thermal film heating tube |
| CN102394184A (en) * | 2011-08-15 | 2012-03-28 | 宁波福特继电器有限公司 | Contact of relay |
| CN102394184B (en) * | 2011-08-15 | 2014-03-26 | 宁波福特继电器有限公司 | Contact of relay |
| CN102394185A (en) * | 2011-10-11 | 2012-03-28 | 杨晓厦 | Contact of relay |
| CN102394185B (en) * | 2011-10-11 | 2014-05-07 | 江苏华仑电子有限公司 | Contact of relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100435251C (en) | 2008-11-19 |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081119 Termination date: 20151103 |
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| EXPY | Termination of patent right or utility model |