CN1059619A - Composite copper-based non-silver electric contact material - Google Patents
Composite copper-based non-silver electric contact material Download PDFInfo
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- CN1059619A CN1059619A CN 91108905 CN91108905A CN1059619A CN 1059619 A CN1059619 A CN 1059619A CN 91108905 CN91108905 CN 91108905 CN 91108905 A CN91108905 A CN 91108905A CN 1059619 A CN1059619 A CN 1059619A
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- oxide
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- silver halide
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Abstract
A kind of composite copper-based non-silver electric contact material, the mains switch of low load in being mainly used in, relay, contactor, the used as electric contacts composite material in the electrical installations such as starter.The present invention has mainly adopted has good conductive, heat conductivility, and very cheap copper has added graphite, tungsten, oxide or silver halide and has made composite material as matrix.The anti-molten ability of the present invention is strong, and oxidation resistent susceptibility, arc extinction performance are good, and electrical contact performance and Ag-based electrical contact material are close, and its life-span meets and exceeds Ag-based electrical contact material.
Description
The mains switch of low load in the invention belongs to, relay, contactor, the used as electric contacts composite material in the electric devices such as starter.
The electrical contact material in low load field remains silver and silver-base alloy basically in being applied at present, silver-oxide is arranged, silver-nickel, silver-copper, silver-cadmium, silver-carbon etc.This mainly is owing to silver-colored conductance height own, thermal conducting rate height, and oxidative resistance is good, easily processing, as electrical contact material, contact resistance is low, and contact performance is stable, for this reason, occupy leading position, but silver belongs to precious metal always, shortage of resources costs an arm and a leg, and easily sulfuration, easy to wear, as electrical contact material, its life-span fluctuation is bigger, in in the low load owing to have a large capacity and a wide range, be that the consumption of silver is very big always.For this reason, many in recent years inventors hang down the road of the non-silver electric contact composite material in load field in exploring one.As: Cu-C makes battery vehicle sliding-type contact, the Cu-rare earth, one is money base in the antithesis, another is a Cu-Ni alloy etc.; These schemes because of existing some deficiency, are not to be used for the dock contact all, are exactly unreliable, therefore fail to be extended to production practices.
The object of the present invention is to provide a kind of cheap, aboundresources, conductance, the thermal conductivity height, contact resistance is low and stable, and handling ease, as electrical contact material, has contact performance stable, the non-silver electric contact composite material that the life-span is high.
The object of the present invention is achieved like this: at first adopted price only for the centesimal copper of silver as matrix.Copper is abundant and conductive and heat-conductive rate in china natural resources, anti-melting welding, electric current erosion and frictional behavior all can with Yin Bimei.Second: added graphite, with the oxidation of the protection copper that improves material, resistance fusion welding, arc extinguishing, self lubricity, resistance to wear.The the 3rd: added highly purified tungsten, improved material hardness and antifriction scrape along electrical loss.The the 4th: added oxide or silver halide, improved arc extinction performance, antioxygenic property and the resistance to wear of material.
The embodiment that respectively forms proportioning of the present invention is: (each composition proportion is a percent by volume)
Embodiment one:
The content of copper is 50-80%, and content of graphite is 1-20%, and W content is 1-30%, and zinc oxide content is 1-15%.
Embodiment two:
Copper, graphite, W content and embodiment together, antimonous oxide 1-15%.
Embodiment three:
Copper, graphite, W content and embodiment together, tin ash content 1-15%.
Embodiment four:
Copper, graphite, W content and embodiment together, content of magnesia 1-15%.
Embodiment five:
Copper, graphite, W content and embodiment together, bismuth oxide content 1-15%.
Embodiment six:
Copper, graphite, W content and embodiment together, cuprous oxide content 1-15%.
Embodiment seven:
Copper, graphite, W content and embodiment together, silver chloride content 1-15%.
Embodiment eight:
Copper, graphite, W content and embodiment together, bromide sliver content 1-15%.
Embodiment nine:
Copper, graphite, W content and embodiment together, agi content 1-15%.
More than each best proportioning of forming be: content of graphite is 25%, and W content is 5%, and the content of oxide or silver halide is 5%, and all the other are copper.
The present invention adopts the powder metallurgy process manufacturing, and its technological process is:
1. copper, graphite, the granularity of oxide or silver halide is the 200-400 order, and tungsten powder particle-size is the 600-800 order, and optimal granularity is 800 orders.
2. with copper, graphite, oxide or silver halide evenly mix by said ratio.
3. the powder cold-press moulding that mixes, forming pressure are 5-10N/m
2, pressurize 1-10 minute, best forming pressure was 7N/m
2
4. cold-press moulding spare is at 0.1-2N/m
2Hydrogen shield under sintering, sintering temperature is the 800-1000 degree, is incubated 1-3 hour, optimum sintering process be 850 the degree/2 hours.
Through above technical process, make the non-silver electric contact material.
The present invention is that the silver contact welding procedure is identical as electrical contact with the welding procedure of copper skeleton.
The present invention has carried out 105Inferior simulated condition is cut-off test, and operation conditions is good, and no melting welding does not have adhesion, under identical experiment condition, compares with silver contact material, and per ten thousand times the relative weight loss amount is lower than silver contact. Calculate that by its stable weightless trend mechanical life of the present invention is 106-10
7Between inferior, experimental result shows, the present invention has really that material source is extensive, and manufacture method is easy, and is cheap, and anti-melting welding ability is strong, the oxytolerant performance, and arc extinction performance is good, high comprehensive performance, the advantage such as service life is long. Can be used for multiple relay, contactor, starter, the devices such as switch, in power system, automatically control, the information transmission, the fields such as household electrical appliance have widely popularizing application prospect.
Claims (6)
1, a kind of composite copper-based non-silver electric contact material, copper is matrix, and contains graphite, it is characterized in that adding tungsten, oxide or the silver halide of high-purity (C.P level).
2, be characterized as the content 50-80% of copper as composite copper-based non-silver electric contact material as described in claims 1, percent by volume (down with) content of graphite is 1-20%, and W content is 1-30%, and the content of oxide or silver halide is 1-15%.
3, tungsten 5%, graphite 15%, and oxide or silver halide 5%, all the other are copper.
4, as claim 1,2 described composite copper-based non-silver electric contact materials is characterized in that oxide is a zinc oxide, antimonous oxide, tin ash, magnesium oxide, bismuth oxide, cuprous oxide; Silver halide is silver chlorate, silver bromide and silver iodide.
5, a kind of process of making composite copper-based non-silver electric contact material adopts powder metallurgical technique, it is characterized in that:
(1) particle size copper is the 200-400 order, graphite 200-400 order, and tungsten 400-800 order, oxide or silver halide are the 200-400 order.
(2) with copper, graphite, tungsten, oxide or silver halide evenly mix by said ratio.
(3) the powder cold-press moulding that mixes, the back pressure that is shaped is 5-10N/m
2, pressurize 1-10 minute.
(4) cold-press moulding spare is at 0.1-2N/m
2Hydrogen shield under sintering, sintering temperature is the 800-1000 degree, is incubated 1-3 hour.
6, technology is:
(1) particle size: copper 200, tungsten 200, graphite 800, oxide or silver halide 200.
(2) with copper, tungsten, graphite, oxide or silver halide mixed 2 hours.
(3) forming pressure 7N/m
2, pressurize 10 minutes.
(4) 850 degree sintering under hydrogen shield are incubated 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91108905 CN1059619A (en) | 1991-09-11 | 1991-09-11 | Composite copper-based non-silver electric contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91108905 CN1059619A (en) | 1991-09-11 | 1991-09-11 | Composite copper-based non-silver electric contact material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1059619A true CN1059619A (en) | 1992-03-18 |
Family
ID=4909542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91108905 Pending CN1059619A (en) | 1991-09-11 | 1991-09-11 | Composite copper-based non-silver electric contact material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059619A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049521C (en) * | 1997-08-08 | 2000-02-16 | 甘肃华洋实业有限公司 | Silver-free composite material for electrical contact and its preparation |
| CN105112713A (en) * | 2015-08-28 | 2015-12-02 | 苏州莱特复合材料有限公司 | Rare earth copper-based composite and preparation method thereof |
| CN105695789A (en) * | 2016-04-08 | 2016-06-22 | 苏州捷德瑞精密机械有限公司 | Nontoxic welding-resistant electrical contact composite and preparation method thereof |
| CN106057272A (en) * | 2016-07-06 | 2016-10-26 | 中南大学 | Graphene modified sliding electric contact material and preparation method thereof |
| CN112267044A (en) * | 2020-10-19 | 2021-01-26 | 西安工程大学 | Preparation method of copper/graphite/tin oxide electric contact material |
| CN114107726A (en) * | 2021-12-06 | 2022-03-01 | 国网江苏省电力有限公司丹阳市供电分公司 | Magnesium-enhanced tungsten-copper electrical contact material and preparation method thereof |
-
1991
- 1991-09-11 CN CN 91108905 patent/CN1059619A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049521C (en) * | 1997-08-08 | 2000-02-16 | 甘肃华洋实业有限公司 | Silver-free composite material for electrical contact and its preparation |
| CN105112713A (en) * | 2015-08-28 | 2015-12-02 | 苏州莱特复合材料有限公司 | Rare earth copper-based composite and preparation method thereof |
| CN105695789A (en) * | 2016-04-08 | 2016-06-22 | 苏州捷德瑞精密机械有限公司 | Nontoxic welding-resistant electrical contact composite and preparation method thereof |
| CN106057272A (en) * | 2016-07-06 | 2016-10-26 | 中南大学 | Graphene modified sliding electric contact material and preparation method thereof |
| CN112267044A (en) * | 2020-10-19 | 2021-01-26 | 西安工程大学 | Preparation method of copper/graphite/tin oxide electric contact material |
| CN114107726A (en) * | 2021-12-06 | 2022-03-01 | 国网江苏省电力有限公司丹阳市供电分公司 | Magnesium-enhanced tungsten-copper electrical contact material and preparation method thereof |
| CN114107726B (en) * | 2021-12-06 | 2022-06-24 | 国网江苏省电力有限公司丹阳市供电分公司 | Magnesium-enhanced tungsten-copper electrical contact material and preparation method thereof |
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| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |