CN103824711B - A kind of double silver base composite oxidate electric contact material and application thereof - Google Patents
A kind of double silver base composite oxidate electric contact material and application thereof Download PDFInfo
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- CN103824711B CN103824711B CN201310712001.4A CN201310712001A CN103824711B CN 103824711 B CN103824711 B CN 103824711B CN 201310712001 A CN201310712001 A CN 201310712001A CN 103824711 B CN103824711 B CN 103824711B
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Abstract
The present invention relates to a kind of double silver base composite oxidate electric contact material and the application in the production process of relay thereof, this money base composite oxides electric contact material comprises two-layer, wherein one deck is AgCuZn layer, another layer is the composite oxide layer of silver, fixing by fusion between two-layer, wherein the composite oxide layer of silver is prepared by Ag, Sn, La and Zr, this money base composite oxides electric contact material is while the performance of raising contact, also save the consumption of ag material, greatly reduce cost.
Description
Technical field
The present invention relates to double silver base composite oxidate electric contact material and application thereof, be particularly suitable for the electric contact material of interchange relay or automobile lift-launch relay.
Background technology
China's relay industry, its production technology, production technology are mainly produced with the labour-intensive mode of production of cheapness for a long time, thus product quality, performance and price all have weak point in competition in the international market, and the properties of product of a same specification have very large difference.Therefore, the outlet of domestic relay industry is to improve constantly on the basis of the part accuracy of manufacture, focus on the development of product and the improvement of Assembling Production pattern and the raising of reliability, to realizing automation or the semi-automation of Assembling Production technique, finally realize production integration, thus improve product technology class and technology content, improve quality, reduce costs.Performance and the external advanced enterprises of home products have very large gap.Material Quality Research for contact part silver alloy still rests on laboratory stage.
As the electric contact material assembled in the relay used under general AC load, common are Ag-CdO system electric contact material.Ag-CdO system slider material should have the characteristics such as deposit resistance property, resistance to expendable and contact resistance stability as electric contact material.But Cd is the element poisonous to human body, considers recent environmental problem, does not preferably manufacture and uses it.Therefore, need to carry out not containing the exploitation of the electric contact material of Cd.
As middle materials not containing Cd used such as the alternating current general-purpose relays in AC load, the clear 54-110124 of patent documentation TOHKEMY and patent documentation JP examined patent publication 55-4825 discloses Ag-SnO
2system and Ag-SnO
2-In
2o
3system waits the oxide based electric contact material of Ag-.Wherein known, Ag-SnO
2very excellent deposit resistance property is shown under the hypovolemic load that the electric contact material of system occurs at impulse current.But, under inductive load, compared with Ag-CdO system electric contact material in the past, Ag-SnO
2the resistance to consumption characteristics being electric contact material is slightly poor, therefore, is difficult to guarantee and the equal or better durability of Ag-CdO system electric contact material.Known in addition, Ag-SnO
2be also containing In in electric contact material
2o
3ag-SnO
2-In
2o
3be electric contact material, significantly improve Ag-SnO
2be the resistive load of electric contact material and the resistance to expendable to inductive load, same with Ag-CdO system electric contact material have the wear properties good to various load balancing.But In is rare metal, and be just widely used as the raw material of the ito transparent electrode in the display unit such as recent liquid crystal or plasma, therefore In resource is faced with exhausted problem, and In big bulge in price, also have influence on electric contact material manufacturing cost.
In addition, the domestic research to ag-based contact material also has following patent documentation: CN1417817A, CN1425790A, CN1441071A, CN1167835A, CN101202169A, CN1443864A etc.
Summary of the invention
The present invention is directed to the deficiency of above existence, provide a kind of double silver base composite oxidate electric contact material, and use it in relay, this double silver base composite oxidate electric contact material has excellent mechanics and electricity combination property.
For realizing above-mentioned object, the invention provides a kind of double silver base composite oxidate electric contact material, this money base composite oxides electric contact material comprises two-layer, wherein one deck be AgCuZn layer by layer, another layer is the composite oxide layer of silver, fixing by fusion between two-layer, wherein the preparation method of the composite oxide layer of silver comprises the following steps:
(1) alloy melting, forms alloy melt by after the mixing of following mass percent through melting by Ag, Sn, La, Zr, and wherein Sn is 5-10%, La be 0.5-2%, Zr is 2-5%, and surplus is Ag;
(2) powder by atomization, makes alloy powder by alloy melt through the atomization of high-pressure atomization equipment;
(3) isostatic pressing ingot, is processed into embryo ingot by alloy powder by isostatic pressing ingot;
(4) sinter, sintered by embryo ingot in non-oxidative medium, sintering temperature is 450 DEG C-600 DEG C and obtains alloy powder sintered ingot;
(5) through extruding, alloy powder sintered ingot is crushed to extrusion plate;
(6) internal oxidition, the sheet material that step (5) is obtained obtains described money base composite oxides electric contact material by internal oxidation.
In a preferred embodiment of the present invention, arranging further is that in described step (1), smelting temperature is 600 DEG C-800 DEG C.
In a preferred embodiment of the present invention, wherein Sn is 10%, La is 1%, Zr is 5%.
In a preferred embodiment of the present invention, described step (2) powder by atomization is gas-atomized powder, and wherein aerosolization pressure is at 10MPa-15MPa.
In a preferred embodiment of the present invention, the hydrostatic pressure in described step (3) controls at 100MPa-150MP.
In a preferred embodiment of the present invention, in described step (4), non-oxidative medium is vacuum or or nitrogen atmosphere.
In a preferred embodiment of the present invention, the extrusion temperature in described step (5) 500 DEG C-700 DEG C, extrusion ratio >=80.
In a preferred embodiment of the present invention, in described step (6), internal oxidation process condition controls: pure oxygen pressure 0.5-1MPa, temperature 500-700 DEG C.
In a preferred embodiment of the present invention, in described AgCuZn layer, the mass percentage of the mass percentage of silver to be the mass percentage of 65%, Cu be 20%, Zn is 15%.
The invention still further relates to and above-mentioned money base composite oxides electric contact material is used in the production process of relay.
In concrete use, using AgCuZn layer as solder side, the composite oxide layer of silver is as working face.Using the composite oxide layer of this silver as working face, make this material have good erosion resisting and resistance fusion welding energy, and there is good break-make performance.The present invention passes through the selection of metal and the optimization of proportioning, and the structural design to electric contact material, while the performance of raising contact, also saves the consumption of ag material, greatly reduces cost.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is the schematic diagram of double silver base composite oxidate electric contact material of the present invention
Wherein 1 represents AgCuZn layer, and 2 represent silver-colored composite oxide layer.
Embodiment
Illustrate that the invention will be further described with embodiment below in conjunction with accompanying drawing:
Embodiment 1
Double silver base composite oxidate electric contact material A comprises two-layer, and wherein one deck is AgCuZn layer, and another layer is the composite oxide layer of silver, and fixing by fusion between two-layer, wherein the preparation method of the composite oxide layer of silver comprises the following steps:
(1) alloy melting, forms alloy melt by after the mixing of following mass percent through melting by Ag, Sn, La, Zr, and wherein Sn is 10%, La is 1%, Zr is 5%, and surplus is Ag, and smelting temperature is 600 DEG C;
(2) gas-atomized powder, alloy melt is made alloy powder through the atomization of high-pressure atomization equipment, and wherein aerosolization pressure is at 10MPa;
(3) isostatic pressing ingot, alloy powder is processed into embryo ingot by isostatic pressing ingot, and Stress control is at 150MPa;
(4) sinter, sintered by embryo ingot in nitrogen atmosphere, sintering temperature is 500 DEG C and obtains alloy powder sintered ingot;
(5) through extruding, alloy powder sintered ingot is crushed to extrusion plate, extrusion temperature 600 DEG C, extrusion ratio >=80;
(6) internal oxidition, the sheet material that step (5) is obtained obtains described money base composite oxides electric contact material by internal oxidation, wherein pure oxygen pressure 1MPa, temperature 500 DEG C.
Embodiment 2
Double silver base composite oxidate electric contact material B comprises two-layer, and wherein one deck is AgCuZn layer, and another layer is the composite oxide layer of silver, and fixing by fusion between two-layer, wherein the preparation method of the composite oxide layer of silver comprises the following steps:
(1) alloy melting, forms alloy melt by after the mixing of following mass percent through melting by Ag, Sn, La, Zr, and wherein Sn is 5%, La is 2%, Zr is 5%, and surplus is Ag, and smelting temperature is 800 DEG C;
(2) gas-atomized powder, alloy melt is made alloy powder through the atomization of high-pressure atomization equipment, and wherein aerosolization pressure is at 15MPa;
(3) isostatic pressing ingot, alloy powder is processed into embryo ingot by isostatic pressing ingot, and Stress control is at 120MPa;
(4) sinter, sintered by embryo ingot in nitrogen atmosphere, sintering temperature is 600 DEG C and obtains alloy powder sintered ingot;
(5) through extruding, alloy powder sintered ingot is crushed to extrusion plate, extrusion temperature 500 DEG C, extrusion ratio >=80;
(6) internal oxidition, the sheet material that step (5) is obtained obtains described money base composite oxides electric contact material by internal oxidation, wherein pure oxygen pressure 0.5MPa, temperature 700 DEG C.
The double silver base composite oxidate electric contact material prepared above-described embodiment 1 and 2 carries out the performance test results and sees the following form 1.
Table 1
| Embodiment 1(A) | Embodiment 2(B) | |
| Conductance (μ Ω .cm) | 3.5 | 3.3 |
| Tensile strength (MPa) | 400 | 398 |
| Hardness (HV) | 145 | 143 |
| Endurance life number of times | 49890 | 47690 |
| Current capacity (A) | 30A | 29A |
Above embodiment display and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; instead of limit the scope of the invention by any way; without departing from the scope of the invention; the present invention also has various changes and modifications, and these changes and improvements all fall in claimed scope.
Claims (2)
1. a double silver base composite oxidate electric contact material, it is characterized in that this money base composite oxides electric contact material comprises two-layer, wherein one deck is AgCuZn layer, another layer is the composite oxide layer of silver, fixing by fusion between two-layer, wherein the preparation method of the composite oxide layer of silver comprises the following steps:
(1) alloy melting, forms alloy melt by after the mixing of following mass percent through melting by Ag, Sn, La, Zr, and wherein Sn is 10%, La is 1%, Zr is 5%, and surplus is Ag;
(2) powder by atomization, makes alloy powder by alloy melt through the atomization of high-pressure atomization equipment;
(3) isostatic pressing ingot, is processed into embryo ingot by alloy powder by isostatic pressing ingot;
(4) sinter, sintered by embryo ingot in non-oxidative medium, sintering temperature is 450 DEG C-600 DEG C and obtains alloy powder sintered ingot;
(5) through extruding, alloy powder sintered ingot is crushed to extrusion plate;
(6) internal oxidition, the sheet material that step (5) is obtained obtains described money base composite oxides electric contact material by internal oxidation;
In described step (1), smelting temperature is 600 DEG C-800 DEG C;
Described step (2) powder by atomization is gas-atomized powder, and wherein aerosolization pressure is at 10MPa-15MPa;
Hydrostatic pressure in described step (3) controls at 100MPa-150MP;
In described step (4) non-oxidative medium be vacuum or or nitrogen atmosphere;
Extrusion temperature in described step (5) 500 DEG C-700 DEG C, extrusion ratio >=80;
In described step (6), internal oxidation process condition controls: pure oxygen pressure 0.5-1MPa, temperature 500-700 DEG C;
In described AgCuZn layer, the mass percentage of the mass percentage of silver to be the mass percentage of 65%, Cu be 20%, Zn is 15%.
2. the application of double silver base composite oxidate electric contact material according to claim 1 in the production process of relay.
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| CN201310712001.4A CN103824711B (en) | 2013-12-20 | 2013-12-20 | A kind of double silver base composite oxidate electric contact material and application thereof |
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| CN103824711B true CN103824711B (en) | 2016-01-20 |
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| CN105206435A (en) * | 2015-07-31 | 2015-12-30 | 陕西斯瑞工业有限责任公司 | Gradient composite copper-chromium contact material and preparation method thereof |
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| CN87100459A (en) * | 1986-01-30 | 1987-08-12 | 西门子公司 | The switch contact of vacuum switch and production method thereof |
| CN1053817A (en) * | 1989-12-26 | 1991-08-14 | 住经营企画株式会社 | silver-metal oxide composite material and production method thereof |
| JPH03207831A (en) * | 1990-01-09 | 1991-09-11 | Akira Shibata | Silver-oxide contact material and its manufacture |
| CN1092903A (en) * | 1993-10-04 | 1994-09-28 | 沈阳黄金学院贵金属材料厂 | Silver/copper/Ag/Cu/Ag-Cu-Zn contactor composite and manufacture method thereof |
| CN1425790A (en) * | 2003-01-09 | 2003-06-25 | 陈达峰 | Process for preparing silver tin oxide material |
| CN101609755A (en) * | 2009-07-08 | 2009-12-23 | 中南大学 | A kind of preparation method of silver-metallic oxide electrical contact material |
| CN101944441A (en) * | 2010-08-31 | 2011-01-12 | 扬州乐银合金科技有限公司 | Silver zinc oxide electric contact material and preparation method thereof |
| CN202042384U (en) * | 2011-05-17 | 2011-11-16 | 上海电科电工材料有限公司 | Composite contact of moulded case circuit breaker |
| CN102312119A (en) * | 2010-06-29 | 2012-01-11 | 福达合金材料股份有限公司 | Preparation method for silver tin oxide electrical contact material |
-
2013
- 2013-12-20 CN CN201310712001.4A patent/CN103824711B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100459A (en) * | 1986-01-30 | 1987-08-12 | 西门子公司 | The switch contact of vacuum switch and production method thereof |
| CN1053817A (en) * | 1989-12-26 | 1991-08-14 | 住经营企画株式会社 | silver-metal oxide composite material and production method thereof |
| JPH03207831A (en) * | 1990-01-09 | 1991-09-11 | Akira Shibata | Silver-oxide contact material and its manufacture |
| CN1092903A (en) * | 1993-10-04 | 1994-09-28 | 沈阳黄金学院贵金属材料厂 | Silver/copper/Ag/Cu/Ag-Cu-Zn contactor composite and manufacture method thereof |
| CN1425790A (en) * | 2003-01-09 | 2003-06-25 | 陈达峰 | Process for preparing silver tin oxide material |
| CN101609755A (en) * | 2009-07-08 | 2009-12-23 | 中南大学 | A kind of preparation method of silver-metallic oxide electrical contact material |
| CN102312119A (en) * | 2010-06-29 | 2012-01-11 | 福达合金材料股份有限公司 | Preparation method for silver tin oxide electrical contact material |
| CN101944441A (en) * | 2010-08-31 | 2011-01-12 | 扬州乐银合金科技有限公司 | Silver zinc oxide electric contact material and preparation method thereof |
| CN202042384U (en) * | 2011-05-17 | 2011-11-16 | 上海电科电工材料有限公司 | Composite contact of moulded case circuit breaker |
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