CN102306558A - Copper alloy electric contact material for low-voltage electrical device and preparation method of copper alloy electric contact material - Google Patents
Copper alloy electric contact material for low-voltage electrical device and preparation method of copper alloy electric contact material Download PDFInfo
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- CN102306558A CN102306558A CN201110246117A CN201110246117A CN102306558A CN 102306558 A CN102306558 A CN 102306558A CN 201110246117 A CN201110246117 A CN 201110246117A CN 201110246117 A CN201110246117 A CN 201110246117A CN 102306558 A CN102306558 A CN 102306558A
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- voltage electrical
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Abstract
The invention discloses a silver-cadmium-free contact material for a low-voltage electrical device. The material comprises the following components in percentage by weight: 0.5 to 2 percent of graphite, 0.5 to 8 percent of ferrous sulfide, 0.01 to 0.5 percent of lanthanum and the balance of copper serving as a base material. A preparation method for the base material comprises the following steps of: weighing the copper, the graphite, the ferrous sulfide and the lanthanum which have the granularity of 5 to 40 micrometers according to a proportion, and uniformly mixing in a mixing machine; pressing the uniformly-mixed powder by using a cold isostatic press under the pressure of 200 to 400 kilonewton/square meter to form an isostatic pressing ingot blank; sintering the isostatic pressing ingot blank in a high-temperature furnace under a protective atmosphere at the temperature of 900 DEG C for 1 to 1.5 hours; and feeding the sintered ingot blank into an extruding machine, and extruding plates or wires. The material has the advantages of high electric conductivity, high thermal conductivity, electric arc overfiring resistance, fusion welding resistance, high-temperature oxidation resistance and low price, and can be widely applied in contact materials for low-voltage electrical devices.
Description
Technical field
The present invention relates to the electric contact material of a kind of low voltage electrical apparatus industry and household electrical appliance industry, be specifically related to a kind of low-voltage electrical apparatus with copper alloy contact material and preparation method thereof.
Background technology
Along with the continuous development of science and technology and the continuous progress of people's quality of life, the application of low-voltage electrical apparatus in life more and more widely also more and more receives people's attention.Low-pressure electronic equipment product is numerous in variety, and irreplaceable effect is also arranged in national economy.Yet at anti electric arc corrosion, electric life, reaching resistance fusion welding can be difficult to satisfy instructions for use in the aspect to existing low-voltage electrical apparatus with the copper alloy contact material, and performance still remains to be improved.The pure article of ferrous sulfide are colourless hexagon crystallization, and general merchandise is crineous or grey black sheet or shot-like particle, and fusing point is 1194 ℃.In the copper matrix, added ferrous sulfide FeS, cooperated with graphite through ferrous sulfide, can effectively improve the copper alloy slider material resistance fusion welding can with the arc extinguishing ability, thereby improve electric life.
Summary of the invention
The object of the invention is to provide a kind of and has conduction, good, the anti-electrical arc erosion of thermal conductivity, anti-melting welding, high temperature oxidation resisting low-voltage electrical apparatus with copper alloy contact material and preparation method thereof.
The objective of the invention is to realize like this: a kind of low-voltage electrical apparatus silver-less and cadmium-less contact material; By copper Cu is base-material; Also include graphite C, ferrous sulfide FeS and lanthanum La; Its compositing formula is expressed as with percetage by weight: graphite C: 0.5%-2%; Ferrous sulfide FeS:0.5%-8%; Lanthanum La:0.01%-0.5%, surplus is copper Cu.
A kind of low-voltage electrical apparatus silver-less and cadmium-less preparation of contact material, as follows:
(1) takes by weighing copper Cu, graphite C, ferrous sulfide FeS and the lanthanum La of granularity about 5 ~ 40 microns according to the above ratio, they are fully mixed;
(2) powder that mixes is pressed down for thousand Ns/square metre at 200-400 with cold isostatic press the static pressure ingot blank such as process;
(3) will wait the static pressure ingot blank in the high temperature furnace of protective atmosphere is arranged sintering 1-1.5 hour, sintering temperature is 900 ℃;
(4) ingot blank that sintering is gone out is sent to and squeezes out sheet material or wire rod in the extruder.
Described protective atmosphere is meant the atmosphere of reproducibility, is specially to feed hydrogen or cover with charcoal powder.
Low-voltage electrical apparatus of the present invention with the copper alloy contact material have conduction, thermal conductivity is good; Anti-electrical arc erosion, anti-melting welding, high temperature oxidation resisting, advantages of cheap price can be widely used in the low-voltage electrical apparatus contact material.
Embodiment
Low-voltage electrical apparatus of the present invention adopts powder metallurgic method to produce with the copper alloy contact material, and is specific as follows:
Embodiment 1:
By copper Cu is base-material, also includes graphite C, ferrous sulfide FeS and lanthanum La, and its compositing formula is expressed as with percetage by weight: graphite C: 0.5%, and ferrous sulfide FeS:0.5%, lanthanum La:0.01%, surplus is copper Cu.Take by weighing copper Cu, graphite C, ferrous sulfide FeS and the lanthanum La of granularity about 5 microns in this ratio, they are fully mixed; Press down at 200,000 Ns/square metre with cold isostatic press and the static pressure ingot blank such as to process; The powder usefulness that mixes is waited static pressure ingot blank sintering 1 hour in the high temperature furnace of protective atmosphere is arranged, and temperature is 900 ℃; The ingot blank that sintering is gone out is sent to and squeezes out sheet material or wire rod in the extruder.
Embodiment 2:
By copper Cu is base-material, also includes graphite C, ferrous sulfide FeS and lanthanum La, and its compositing formula is expressed as with percetage by weight: graphite C: 1%, and ferrous sulfide FeS:2%, lanthanum La:0.1%, surplus is copper Cu.Take by weighing copper Cu, graphite C, ferrous sulfide FeS and the lanthanum La of granularity in this ratio, they are fully mixed on 10 microns right sides; Press down at 250,000 Ns/square metre with cold isostatic press and the static pressure ingot blank such as to process; The powder usefulness that mixes is waited static pressure ingot blank sintering 1.2 hours in the high temperature furnace of protective atmosphere is arranged, and temperature is 900 ℃; The ingot blank that sintering is gone out is sent to and squeezes out sheet material or wire rod in the extruder.
Embodiment 3:
By copper Cu is base-material, also includes graphite C, ferrous sulfide FeS and lanthanum La, and its compositing formula is expressed as with percetage by weight: graphite C: 1.5%, and ferrous sulfide FeS:5%, lanthanum La:0.2%, surplus is copper Cu.Take by weighing copper Cu, graphite C, ferrous sulfide FeS and the lanthanum La of granularity about 20 microns in this ratio, they are fully mixed; Press down at 300,000 Ns/square metre with cold isostatic press and the static pressure ingot blank such as to process; The powder usefulness that mixes is waited static pressure ingot blank sintering 1.3 hours in the high temperature furnace of protective atmosphere is arranged, and temperature is 900 ℃; The ingot blank that sintering is gone out is sent to and squeezes out sheet material or wire rod in the extruder.
Embodiment 4:
By copper Cu is base-material, also includes graphite C, ferrous sulfide FeS and lanthanum La, and its compositing formula is expressed as with percetage by weight: graphite C: 1.8%, and ferrous sulfide FeS:6%, lanthanum La:0.3%, surplus is copper Cu.Take by weighing copper Cu, graphite C, ferrous sulfide FeS and the lanthanum La of granularity about 30 microns in this ratio, they are fully mixed; Press down at 350,000 Ns/square metre with cold isostatic press and the static pressure ingot blank such as to process; The powder usefulness that mixes is waited static pressure ingot blank sintering 1.4 hours in the high temperature furnace of protective atmosphere is arranged, and temperature is 900 ℃; The ingot blank that sintering is gone out is sent to and squeezes out sheet material or wire rod in the extruder.
Embodiment 5:
By copper Cu is base-material, also includes graphite C, ferrous sulfide FeS and lanthanum La, and its compositing formula is expressed as with percetage by weight: graphite C: 2%, and ferrous sulfide FeS:8%, lanthanum La:0.5%, surplus is copper Cu.Take by weighing copper Cu, graphite C, ferrous sulfide FeS and the lanthanum La of granularity about 40 microns in this ratio, they are fully mixed; Press down at 400,000 Ns/square metre with cold isostatic press and the static pressure ingot blank such as to process; The powder usefulness that mixes is waited static pressure ingot blank sintering 1.5 hours in the high temperature furnace of protective atmosphere is arranged, and temperature is 900 ℃; The ingot blank that sintering is gone out is sent to and squeezes out sheet material or wire rod in the extruder.
The employed protective atmosphere of present embodiment 1-5 is meant the atmosphere of reproducibility, such as feeding hydrogen, perhaps covers with charcoal powder.
Claims (4)
1. low-voltage electrical apparatus silver-less and cadmium-less contact material; By copper Cu is base-material; It is characterized in that: also have graphite C, ferrous sulfide FeS and lanthanum La; Its compositing formula is expressed as with percetage by weight: graphite C: 0.5%-2%; Ferrous sulfide FeS:0.5%-8%; Lanthanum La:0.01%-0.5%, surplus is copper Cu.
2. one kind prepares a kind of low-voltage electrical apparatus silver-less and cadmium-less preparation of contact material as claimed in claim 1, it is characterized in that method is following:
Take by weighing copper Cu, graphite C, ferrous sulfide FeS and the lanthanum La of granularity about 5 ~ 40 microns in proportion, they are fully mixed;
The powder that mixes pressed down for thousand Ns/square metre at 200-400 with cold isostatic press the static pressure ingot blank such as process;
To wait the static pressure ingot blank in the high temperature furnace of protective atmosphere is arranged sintering 1-1.5 hour, sintering temperature is 900 ℃;
The ingot blank that sintering is gone out is sent to and squeezes out sheet material or wire rod in the extruder.
3. a kind of low-voltage electrical apparatus silver-less and cadmium-less preparation of contact material according to claim 2 is characterized in that described protective atmosphere, is meant the atmosphere of reproducibility.
4. a kind of low-voltage electrical apparatus silver-less and cadmium-less preparation of contact material according to claim 2 is characterized in that described protective atmosphere is for feeding hydrogen or covering with charcoal powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110246117A CN102306558A (en) | 2011-08-25 | 2011-08-25 | Copper alloy electric contact material for low-voltage electrical device and preparation method of copper alloy electric contact material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110246117A CN102306558A (en) | 2011-08-25 | 2011-08-25 | Copper alloy electric contact material for low-voltage electrical device and preparation method of copper alloy electric contact material |
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| CN102306558A true CN102306558A (en) | 2012-01-04 |
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| CN201110246117A Pending CN102306558A (en) | 2011-08-25 | 2011-08-25 | Copper alloy electric contact material for low-voltage electrical device and preparation method of copper alloy electric contact material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208375A (en) * | 2013-04-09 | 2013-07-17 | 哈尔滨东大高新材料股份有限公司 | Copper alloy contact material for alternating current contactor, and method for preparing copper alloy contact material |
| WO2017156721A1 (en) * | 2016-03-16 | 2017-09-21 | 湖南特力新材料有限公司 | Ultra-high strength and self-lubricating copper alloy and preparation method therefor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5558345A (en) * | 1978-10-25 | 1980-05-01 | Hitachi Chem Co Ltd | Cast alloy material for sliding contact maker |
| CN1609245A (en) * | 2004-08-26 | 2005-04-27 | 乐清市南大合金科技有限公司 | High-copper silverless contact for low voltage apparatus material and processing method thereof |
| CN1925080A (en) * | 2004-08-26 | 2007-03-07 | 乐清市南大合金科技有限公司 | Low-voltage electric appliances used high copper content sliver free contactor materials and method for processing same |
| CN102162045A (en) * | 2011-03-29 | 2011-08-24 | 温州银泰合金材料有限公司 | Electrical contact based on powdered copper and manufacturing process thereof |
-
2011
- 2011-08-25 CN CN201110246117A patent/CN102306558A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5558345A (en) * | 1978-10-25 | 1980-05-01 | Hitachi Chem Co Ltd | Cast alloy material for sliding contact maker |
| CN1609245A (en) * | 2004-08-26 | 2005-04-27 | 乐清市南大合金科技有限公司 | High-copper silverless contact for low voltage apparatus material and processing method thereof |
| CN1925080A (en) * | 2004-08-26 | 2007-03-07 | 乐清市南大合金科技有限公司 | Low-voltage electric appliances used high copper content sliver free contactor materials and method for processing same |
| CN102162045A (en) * | 2011-03-29 | 2011-08-24 | 温州银泰合金材料有限公司 | Electrical contact based on powdered copper and manufacturing process thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208375A (en) * | 2013-04-09 | 2013-07-17 | 哈尔滨东大高新材料股份有限公司 | Copper alloy contact material for alternating current contactor, and method for preparing copper alloy contact material |
| WO2017156721A1 (en) * | 2016-03-16 | 2017-09-21 | 湖南特力新材料有限公司 | Ultra-high strength and self-lubricating copper alloy and preparation method therefor |
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Application publication date: 20120104 |