CN111299594A - Preparation method of copper-tungsten petal contact - Google Patents
Preparation method of copper-tungsten petal contact Download PDFInfo
- Publication number
- CN111299594A CN111299594A CN201911200292.2A CN201911200292A CN111299594A CN 111299594 A CN111299594 A CN 111299594A CN 201911200292 A CN201911200292 A CN 201911200292A CN 111299594 A CN111299594 A CN 111299594A
- Authority
- CN
- China
- Prior art keywords
- copper
- tungsten
- contact part
- contact
- petal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F3/26—Impregnating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Abstract
The invention provides a preparation method of a copper-tungsten petal contact, which comprises the following steps: the method comprises the following steps: forming the copper-tungsten contact part by using copper-tungsten ring powder forming; step two: putting the copper-tungsten contact part into a graphite crucible mold, and putting a pure copper block into the graphite crucible mold for vacuum infiltration; step three: machining the copper-tungsten contact part subjected to infiltration, and splitting the contact part; step four: putting the copper-tungsten contact part subjected to splitting into a cold press molding die, and performing molding connection with the pure copper powder part with a complex shape; step five: sintering the copper-tungsten contact part and the pure copper powder at high temperature; step six: the copper-tungsten petal contact is shaped to reach the required shape and performance indexes. The preparation efficiency is improved, the product quality is improved, the production cost is reduced, and through respective manufacturing, the material is saved, the utilization rate of the material is improved, and the energy conservation and consumption reduction of enterprises are facilitated.
Description
Technical Field
The invention relates to the field of powder metallurgy, in particular to a preparation method of a copper-tungsten petal contact.
Background
At present, when the copper-tungsten petal contact is manufactured, powder forming is directly carried out to manufacture a rough blank, and then splitting is carried out through processing, but because the rear part of the contact is made of pure copper powder and has a complex structure, the pure copper powder part at the rear part of the contact is difficult to manufacture by simply using a powder forming process, the production cost is increased, and no set of process can manufacture the copper-tungsten petal contact with low cost and high efficiency at present. Therefore, it is very important to solve the problems of high manufacturing cost and poor product quality of the petal contact.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation method of a copper-tungsten petal contact, which is characterized in that the petal contact is prepared in a segmented manner, the contact part is firstly manufactured, and the contact part and the pure copper powder part are sintered and connected, so that the preparation efficiency is improved, the product quality is improved, the production cost is reduced, and the problems of high manufacturing process cost and poor product quality of the petal contact are solved.
The invention provides a preparation method of a copper-tungsten petal contact, which comprises the following steps:
the method comprises the following steps: forming the copper-tungsten contact part by using copper-tungsten ring powder forming;
step two: putting the copper-tungsten contact part into a graphite crucible mold, and putting a pure copper block into the graphite crucible mold for vacuum infiltration;
step three: machining the copper-tungsten contact part subjected to infiltration, and splitting the contact part;
step four: putting the copper-tungsten contact part subjected to splitting into a cold press molding die, and performing molding connection with the pure copper powder part with a complex shape;
step five: sintering the copper-tungsten contact part and the pure copper powder at high temperature;
step six: the copper-tungsten petal contact is shaped to reach the required shape and performance indexes.
The further improvement lies in that: and in the second step, the thickness of the pure copper layer on the copper-tungsten contact part is 3-5 mm.
The further improvement lies in that: and performing high-temperature sintering in an atmosphere protection continuous furnace during high-temperature sintering in the step five.
The further improvement lies in that: and the atmosphere used in the fifth step is hydrogen.
The invention has the beneficial effects that: prepare the petal contact through the segmentation, carry out the manufacturing of contact part earlier, be sintering with contact part and pure copper powder part and be connected, improve preparation efficiency to improve the product quality, reduction in production cost, and through making respectively, save material improves the utilization ratio of material, is favorable to the enterprise to carry out energy saving and consumption reduction.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
The embodiment provides a preparation method of a copper-tungsten petal contact, which comprises the following steps:
the method comprises the following steps: forming the copper-tungsten contact part by using copper-tungsten ring powder forming;
step two: putting the copper-tungsten contact part into a graphite crucible mold, and putting a pure copper block into the graphite crucible mold for vacuum infiltration;
step three: machining the copper-tungsten contact part subjected to infiltration, and splitting the contact part;
step four: putting the copper-tungsten contact part subjected to splitting into a cold press molding die, and performing molding connection with the pure copper powder part with a complex shape;
step five: sintering the copper-tungsten contact part and the pure copper powder at high temperature;
step six: the copper-tungsten petal contact is shaped to reach the required shape and performance indexes.
And in the second step, the thickness of the pure copper layer on the copper-tungsten contact part is 3 mm. And performing high-temperature sintering in an atmosphere protection continuous furnace during high-temperature sintering in the step five. And the atmosphere used in the fifth step is hydrogen. Prepare the petal contact through the segmentation, carry out the manufacturing of contact part earlier, be sintering with contact part and pure copper powder part and be connected, improve preparation efficiency to improve the product quality, reduction in production cost, and through making respectively, save material improves the utilization ratio of material, is favorable to the enterprise to carry out energy saving and consumption reduction.
Claims (4)
1. A preparation method of a copper-tungsten petal contact is characterized by comprising the following steps: the preparation method comprises the following steps:
the method comprises the following steps: forming the copper-tungsten contact part by using copper-tungsten ring powder forming;
step two: putting the copper-tungsten contact part into a graphite crucible mold, and putting a pure copper block into the graphite crucible mold for vacuum infiltration;
step three: machining the copper-tungsten contact part subjected to infiltration, and splitting the contact part;
step four: putting the copper-tungsten contact part subjected to splitting into a cold press molding die, and performing molding connection with the pure copper powder part with a complex shape;
step five: sintering the copper-tungsten contact part and the pure copper powder at high temperature;
step six: the copper-tungsten petal contact is shaped to reach the required shape and performance indexes.
2. The method for preparing a copper-tungsten petal contact as claimed in claim 1, wherein the method comprises the following steps: and in the second step, the thickness of the pure copper layer on the copper-tungsten contact part is 3-5 mm.
3. The method for preparing a copper-tungsten petal contact as claimed in claim 1, wherein the method comprises the following steps: and performing high-temperature sintering in an atmosphere protection continuous furnace during high-temperature sintering in the step five.
4. The method for preparing the copper-tungsten petal contact as claimed in claim 3, wherein the method comprises the following steps: and the atmosphere used in the fifth step is hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200292.2A CN111299594A (en) | 2019-11-29 | 2019-11-29 | Preparation method of copper-tungsten petal contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200292.2A CN111299594A (en) | 2019-11-29 | 2019-11-29 | Preparation method of copper-tungsten petal contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111299594A true CN111299594A (en) | 2020-06-19 |
Family
ID=71156261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911200292.2A Pending CN111299594A (en) | 2019-11-29 | 2019-11-29 | Preparation method of copper-tungsten petal contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111299594A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1229704A (en) * | 1998-03-23 | 1999-09-29 | 西安理工大学 | Verticle sintering method for copper/tungsten-chromium copper integral probe |
| JP2002161327A (en) * | 2000-11-21 | 2002-06-04 | Toshiba Corp | Contact material for circuit breaker, manufacturing method therefor, and circuit breaker |
| JP2007323850A (en) * | 2006-05-30 | 2007-12-13 | Toshiba Corp | Manufacturing method for contact and conductive shaft of vacuum valve |
| CN101552147A (en) * | 2009-03-30 | 2009-10-07 | 西安理工大学 | Preparation method of CuW/CrCu integral high-voltage electrical contacts |
| CN101699591A (en) * | 2009-10-30 | 2010-04-28 | 西安福莱电工合金有限公司 | Copper-tungsten/copper-alloy integrated contact and preparation method thereof |
| CN101699598A (en) * | 2009-10-30 | 2010-04-28 | 西安福莱电工合金有限公司 | Method for manufacturing copper-tungsten/chromium-bronze self-elastic moving arcing integrated contact |
| CN101702383A (en) * | 2009-10-30 | 2010-05-05 | 西安福莱电工合金有限公司 | Method for manufacturing copper-tungsten/chrome bronze self-reliance integral contact |
| CN102166650A (en) * | 2011-03-30 | 2011-08-31 | 西安交通大学 | Method for manufacturing gradient copper-wolfram/copper-chromium zirconium bronze integrated contact |
| CN104213009A (en) * | 2014-08-29 | 2014-12-17 | 浙江立泰复合材料有限公司 | Method for cladding copper on surface of infiltration sintered tungsten-copper composite material |
| CN104362015A (en) * | 2014-11-28 | 2015-02-18 | 桂林电器科学研究院有限公司 | Preparation method of copper-tungsten contact material |
| CN106282714A (en) * | 2016-09-23 | 2017-01-04 | 西安理工大学 | A kind of preparation method of self-lubricating copper tungsten material |
| CN106381411A (en) * | 2016-09-23 | 2017-02-08 | 西安理工大学 | Preparation method of copper-tungsten alloy and CuW-CrCu integrated material |
| CN106591611A (en) * | 2016-11-14 | 2017-04-26 | 西安理工大学 | Method improving wear resistance of CuW alloy |
| CN109182870A (en) * | 2018-09-17 | 2019-01-11 | 西安理工大学 | A kind of preparation method with low-friction coefficient CuW alloy |
-
2019
- 2019-11-29 CN CN201911200292.2A patent/CN111299594A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1229704A (en) * | 1998-03-23 | 1999-09-29 | 西安理工大学 | Verticle sintering method for copper/tungsten-chromium copper integral probe |
| JP2002161327A (en) * | 2000-11-21 | 2002-06-04 | Toshiba Corp | Contact material for circuit breaker, manufacturing method therefor, and circuit breaker |
| JP2007323850A (en) * | 2006-05-30 | 2007-12-13 | Toshiba Corp | Manufacturing method for contact and conductive shaft of vacuum valve |
| CN101552147A (en) * | 2009-03-30 | 2009-10-07 | 西安理工大学 | Preparation method of CuW/CrCu integral high-voltage electrical contacts |
| CN101699591A (en) * | 2009-10-30 | 2010-04-28 | 西安福莱电工合金有限公司 | Copper-tungsten/copper-alloy integrated contact and preparation method thereof |
| CN101699598A (en) * | 2009-10-30 | 2010-04-28 | 西安福莱电工合金有限公司 | Method for manufacturing copper-tungsten/chromium-bronze self-elastic moving arcing integrated contact |
| CN101702383A (en) * | 2009-10-30 | 2010-05-05 | 西安福莱电工合金有限公司 | Method for manufacturing copper-tungsten/chrome bronze self-reliance integral contact |
| CN102166650A (en) * | 2011-03-30 | 2011-08-31 | 西安交通大学 | Method for manufacturing gradient copper-wolfram/copper-chromium zirconium bronze integrated contact |
| CN104213009A (en) * | 2014-08-29 | 2014-12-17 | 浙江立泰复合材料有限公司 | Method for cladding copper on surface of infiltration sintered tungsten-copper composite material |
| CN104362015A (en) * | 2014-11-28 | 2015-02-18 | 桂林电器科学研究院有限公司 | Preparation method of copper-tungsten contact material |
| CN106282714A (en) * | 2016-09-23 | 2017-01-04 | 西安理工大学 | A kind of preparation method of self-lubricating copper tungsten material |
| CN106381411A (en) * | 2016-09-23 | 2017-02-08 | 西安理工大学 | Preparation method of copper-tungsten alloy and CuW-CrCu integrated material |
| CN106591611A (en) * | 2016-11-14 | 2017-04-26 | 西安理工大学 | Method improving wear resistance of CuW alloy |
| CN109182870A (en) * | 2018-09-17 | 2019-01-11 | 西安理工大学 | A kind of preparation method with low-friction coefficient CuW alloy |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20200619 |