CN107739862A - A kind of preparation method of tungsten-copper alloy material - Google Patents
A kind of preparation method of tungsten-copper alloy material Download PDFInfo
- Publication number
- CN107739862A CN107739862A CN201711001987.9A CN201711001987A CN107739862A CN 107739862 A CN107739862 A CN 107739862A CN 201711001987 A CN201711001987 A CN 201711001987A CN 107739862 A CN107739862 A CN 107739862A
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- Prior art keywords
- powder
- tungsten
- copper
- preparation
- copper alloy
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/145—Chemical treatment, e.g. passivation or decarburisation
-
- 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
- B22F3/001—Starting from powder comprising reducible metal compounds
-
- 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
- B22F3/1035—Liquid phase sintering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The invention provides a kind of preparation method of tungsten-copper alloy material, is specially：CuO powder and W powder mixed-powder are subjected to reduction treatment twice, are compacted compressing after each reduction treatment, is then broken for powder, then carry out next step operation；Then pressed compact is made in obtained mixed-powder, copper foil is placed above and below pressed compact, be sintered and tentatively ooze copper；Finally the material after processing is placed in crystal vessel, and tungsten filament establishment body is placed on material, is melted under vacuum and oozes copper, that is, copper tungsten contact material is made.The present invention substitutes induction Cu powder, using tungsten filament knitted body as skeleton with CuO powder, not only increases the resistance to electrical arc erosion of contact material, while improve its intensity.
Description
Technical field
The invention belongs to technical field of composite materials, is related to a kind of preparation method of tungsten-copper alloy material.
Background technology
In CuW alloys, high-melting-point W forms the skeleton of infusibility, material had arc resistant, wear-resisting undermined resistant to elevated temperatures property
Can, and the Cu of low melting point has excellent conduction, thermal conductivity and good plasticity.Therefore CuW alloys are widely used as high pressure
And the contact material of super-pressure electric switch.
The preparation of the existing CuW alloys as contact material makees raw material using Cu powder and W powder more.But due to metallic copper and
Tungsten physical difference is larger, and the distributing homogeneity of tungsten is difficult to be guaranteed in alloy, and W skeleton insufficient strength, causes the strength of materials
With arc ablation resistance performance deficiency.
The content of the invention
It is uniform to obtain composition it is an object of the invention to provide a kind of preparation method of tungsten-copper alloy material, and intensity and
The high contact material of arc ablation resistance performance.
The technical solution adopted in the present invention is a kind of preparation method of tungsten-copper alloy material, specifically according to following steps
Implement：
Step 1, CuO powder and W powder mixed-powder are subjected to reduction treatment twice, are pressed into after each reduction treatment
Type, powder is then broken for, then carries out next step operation；
Step 2, pressed compact is made in mixed-powder step 1 obtained, and copper foil is placed above and below pressed compact, is sintered and just
Step oozes copper；
Step 3, the material after step 2 is handled is placed in crystal vessel, and tungsten filament establishment body is placed on material, very
Copper is oozed in the lower melting of sky, that is, copper tungsten contact material is made.
The features of the present invention also resides in,
The particle mean size of CuO powder and W powder is 100~200nm in step 1.
CuO powder is 1 with W powder mass ratio:1~3.
Reduction treatment described in step 1 is under an atmosphere of hydrogen, to heat；Wherein first time reduction treatment temperature is
450~500 DEG C, the time is 0.5~1h；Second of reduction treatment temperature is 700~750 DEG C, and the time is 0.5~1h.
Pressure compressing after second of reduction treatment is more than for the first time in step 1.
Sintering is 1100~1200 DEG C with the temperature for tentatively oozing copper in step 2, and soaking time is 2~3h.
It is 1200~1350 DEG C that copper temperature is oozed in melting in step 3, soaking time 3~4 hours.
Tungsten filament knitted body after a diameter of 0.1~100 μm of tungsten filament is carried out into pickling and cleaning by carrying out three-dimensional in step 3
Or control of two-dimensional braided obtains.
The invention has the advantages that the method for the present invention substitutes induction Cu powder with CuO powder, and by after reduction repeatedly
It is compacting, broken, Cu is equally filled in as bead in surrounding's hole of W particles, it is resistance to so as to the copper tungsten contact material that makes to obtain
Electrical arc erosion is significantly improved.Simultaneously using tungsten filament knitted body as skeleton so that the copper liquid of melting is very easy to ooze it
In, the tungsten-copper alloy of gained has the high-compactness close to solid density, avoid the tungsten-copper alloy of traditional handicraft preparation because
Uneven microstructure phenomenon caused by batch mixing is uneven；And skeleton is used as using tungsten filament knitted body so that obtained material has good
Intensity and abrasion resistance properties.
Embodiment
With reference to embodiment, the present invention is described in detail.
A kind of preparation method of tungsten-copper alloy material of the present invention, specifically implements according to following steps：
Step 1, according to CuO powder and W powder mass ratio 1:1~3, CuO powder is well mixed with W powder；CuO powder and W
The particle mean size of powder is 100~200nm.
Step 2, by temperature of the mixed powder at 450~500 DEG C, under atmosphere of hydrogen, after 0.5~1h of reduction treatment,
It is compacted compressing, is broken for powder；Again at 700~750 DEG C of temperature, atmosphere of hydrogen, 0.5~1h of reduction treatment, increase
Pressure is compressing, is broken for powder；
Step 3, the mixed-powder pressed compact after step 2 is handled, copper foil, temperature 1100~1200 are placed above and below pressed compact
2~3h is sintered at DEG C；
Step 4, the material after sintering is placed in crystal vessel, and tungsten filament establishment body is placed on material, under vacuum,
3~4 hours are incubated at a temperature of 1200~1350 DEG C, that is, copper tungsten contact material is made.
Tungsten filament knitted body after a diameter of 0.1~100 μm of tungsten filament is carried out into pickling and cleaning by carrying out three-dimensional or two dimension
Braiding obtains.
The method of the present invention substitutes induction Cu powder with CuO powder, not only solves difficulty prepared by ultra-fine Cu powder, also acts
Hinder the effect of W particle growths.By being compacted repeatedly after reduction, crush, Cu is equally filled in around W particles as bead
In hole, and W particles are effectively split, avoid the appearance of closed pore, so as to make the resistance to electricity of obtained copper tungsten contact material
Arcing damage property is significantly improved.Simultaneously using tungsten filament knitted body as skeleton so that the copper liquid of melting is very easy to ooze wherein,
The tungsten-copper alloy of gained has the high-compactness close to solid density, avoids the tungsten-copper alloy of traditional handicraft preparation because of batch mixing
Uneven microstructure phenomenon caused by uneven；And skeleton is used as using tungsten filament knitted body so that obtained material has well strong
Degree and abrasion resistance properties.
Embodiment 1
Step 1, according to CuO powder and W powder mass ratio 1:1, CuO powder is well mixed with W powder；
Step 2, by temperature of the mixed powder at 450 DEG C, under atmosphere of hydrogen, after reduction treatment 1h, compacting is pressed into
Type, it is broken for powder；Again at 700 DEG C of temperature, atmosphere of hydrogen, reduction treatment 1h, intensified pressure is compressing, is broken for powder
End；
Step 3, the mixed-powder pressed compact after step 2 is handled, copper foil is placed above and below pressed compact, is burnt at 1100 DEG C of temperature
Tie 3h；
Step 4, the material after sintering is placed in crystal vessel, and tungsten filament establishment body is placed on material, under vacuum,
4 hours are incubated at a temperature of 1200 DEG C, that is, copper tungsten contact material is made.
Embodiment 2
Step 1, according to CuO powder and W powder mass ratio 1:3, CuO powder is well mixed with W powder；
Step 2, by temperature of the mixed powder at 500 DEG C, under atmosphere of hydrogen, after reduction treatment 0.5h, compacting compacting
Shaping, is broken for powder；Again at 750 DEG C of temperature, atmosphere of hydrogen, reduction treatment 0.5h, intensified pressure is compressing, crushes
For powder；
Step 3, the mixed-powder pressed compact after step 2 is handled, copper foil is placed above and below pressed compact, is burnt at 1200 DEG C of temperature
Tie 2h；
Step 4, the material after sintering is placed in crystal vessel, and tungsten filament establishment body is placed on material, under vacuum,
3 hours are incubated at a temperature of 1350 DEG C, that is, copper tungsten contact material is made.
Embodiment 3
Step 1 is then according to CuO powder and W powder mass ratio 1:2, CuO powder is well mixed with W powder；
Step 2, by temperature of the mixed powder at 470 DEG C, under atmosphere of hydrogen, after reduction treatment 0.5h, compacting compacting
Shaping, is broken for powder；Again at 730 DEG C of temperature, atmosphere of hydrogen, reduction treatment 1h, intensified pressure is compressing, is broken for
Powder；
Step 3, the mixed-powder pressed compact after step 2 is handled, copper foil is placed above and below pressed compact, is burnt at 1150 DEG C of temperature
Tie 2.5h；
Step 4, the material after sintering is placed in crystal vessel, and tungsten filament establishment body is placed on material, under vacuum,
3.5 hours are incubated at a temperature of 1300 DEG C, that is, copper tungsten contact material is made.
Claims (8)
1. a kind of preparation method of tungsten-copper alloy material, it is characterised in that specifically implement according to following steps：
Step 1, CuO powder and W powder mixed-powder are subjected to reduction treatment twice, be compacted after each reduction treatment it is compressing,
Then powder is broken for, then carries out next step operation；
Step 2, pressed compact is made in mixed-powder step 1 obtained, and copper foil is placed above and below pressed compact, is sintered and is tentatively oozed
Copper；
Step 3, the material after step 2 is handled is placed in crystal vessel, and tungsten filament establishment body is placed on material, under vacuum
Copper is oozed in melting, that is, copper tungsten contact material is made.
A kind of 2. preparation method of tungsten-copper alloy material according to claim 1, it is characterised in that CuO in the step 1
The particle mean size of powder and W powder is 100~200nm.
3. the preparation method of a kind of tungsten-copper alloy material according to claim 1, it is characterised in that the CuO powder and W
Powder mass ratio is 1:1~3.
A kind of 4. preparation method of tungsten-copper alloy material according to claim 1, it is characterised in that institute in the step 1
Reduction treatment is stated under an atmosphere of hydrogen, to heat；Wherein first time reduction treatment temperature is 450~500 DEG C, and the time is
0.5~1h；Second of reduction treatment temperature is 700~750 DEG C, and the time is 0.5~1h.
5. the preparation method of a kind of tungsten-copper alloy material according to claim 1, it is characterised in that in the step 1
Compressing pressure is more than for the first time after secondary reduction processing.
6. the preparation method of a kind of tungsten-copper alloy material according to claim 1, it is characterised in that burnt in the step 2
Knot and the temperature for tentatively oozing copper are 1100~1200 DEG C, and soaking time is 2~3h.
7. the preparation method of a kind of tungsten-copper alloy material according to claim 1, it is characterised in that melted in the step 3
Melt and ooze copper temperature for 1200~1350 DEG C, soaking time 3~4 hours.
A kind of 8. preparation method of tungsten-copper alloy material according to claim 1, it is characterised in that tungsten in the step 3
Silk knitted body is obtained by the way that a diameter of 0.1~100 μm of tungsten filament is carried out into pickling with three-dimensional or control of two-dimensional braided is carried out after cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711001987.9A CN107739862A (en) | 2017-10-24 | 2017-10-24 | A kind of preparation method of tungsten-copper alloy material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711001987.9A CN107739862A (en) | 2017-10-24 | 2017-10-24 | A kind of preparation method of tungsten-copper alloy material |
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| CN107739862A true CN107739862A (en) | 2018-02-27 |
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| CN201711001987.9A Pending CN107739862A (en) | 2017-10-24 | 2017-10-24 | A kind of preparation method of tungsten-copper alloy material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202086A (en) * | 2018-09-06 | 2019-01-15 | 河源职业技术学院 | A kind of preparation method of nut |
| CN112927956A (en) * | 2021-01-22 | 2021-06-08 | 中国科学院金属研究所 | Electric contact material and preparation method thereof |
| CN112975307A (en) * | 2021-05-11 | 2021-06-18 | 陕西斯瑞新材料股份有限公司 | Method for improving brazing strength of tungsten-copper part |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363708A (en) * | 2001-12-13 | 2002-08-14 | 北京科技大学 | Process for preparing W-Cu alloy with superfine crystal grains |
| CN1995438A (en) * | 2006-12-22 | 2007-07-11 | 株洲硬质合金集团有限公司 | Method for preparing elconite |
| CN101092669A (en) * | 2007-05-18 | 2007-12-26 | 西安建筑科技大学 | Method for preparing wolfram steel or composite material of tungsten and silver |
| CN101224498A (en) * | 2008-01-30 | 2008-07-23 | 西安理工大学 | Method for preparing wolfram and copper material contactor adopting W-CuO powder |
| CN102061431A (en) * | 2010-12-17 | 2011-05-18 | 上海工程技术大学 | Tungsten-copper composite material and preparation method thereof |
-
2017
- 2017-10-24 CN CN201711001987.9A patent/CN107739862A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363708A (en) * | 2001-12-13 | 2002-08-14 | 北京科技大学 | Process for preparing W-Cu alloy with superfine crystal grains |
| CN1995438A (en) * | 2006-12-22 | 2007-07-11 | 株洲硬质合金集团有限公司 | Method for preparing elconite |
| CN101092669A (en) * | 2007-05-18 | 2007-12-26 | 西安建筑科技大学 | Method for preparing wolfram steel or composite material of tungsten and silver |
| CN101224498A (en) * | 2008-01-30 | 2008-07-23 | 西安理工大学 | Method for preparing wolfram and copper material contactor adopting W-CuO powder |
| CN102061431A (en) * | 2010-12-17 | 2011-05-18 | 上海工程技术大学 | Tungsten-copper composite material and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202086A (en) * | 2018-09-06 | 2019-01-15 | 河源职业技术学院 | A kind of preparation method of nut |
| CN112927956A (en) * | 2021-01-22 | 2021-06-08 | 中国科学院金属研究所 | Electric contact material and preparation method thereof |
| CN112927956B (en) * | 2021-01-22 | 2022-04-01 | 中国科学院金属研究所 | Electric contact material and preparation method thereof |
| CN112975307A (en) * | 2021-05-11 | 2021-06-18 | 陕西斯瑞新材料股份有限公司 | Method for improving brazing strength of tungsten-copper part |
| CN112975307B (en) * | 2021-05-11 | 2021-07-30 | 陕西斯瑞新材料股份有限公司 | Method for improving brazing strength of tungsten-copper part |
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Application publication date: 20180227 |