CN109609792A - A method of preparing tungsten-copper alloy - Google Patents
A method of preparing tungsten-copper alloy Download PDFInfo
- Publication number
- CN109609792A CN109609792A CN201811540004.3A CN201811540004A CN109609792A CN 109609792 A CN109609792 A CN 109609792A CN 201811540004 A CN201811540004 A CN 201811540004A CN 109609792 A CN109609792 A CN 109609792A
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- tungsten
- copper alloy
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- sintered
- copper
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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
- C22C1/045—Alloys based on refractory metals
-
- 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
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
-
- 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 present invention relates to a kind of methods for preparing tungsten-copper alloy, comprising the following steps: step 1, mixing: mass percent is used uniformly to mix 8-10 hours for the tungsten powder of the copper powder of 20%-45% and mass percent 55%-80%；Step 2, green compact: by step 1 tungsten powder and copper powder be pressed and molded under pressure after mixing, obtain green compact；Step 3, it is sintered: green compact obtained in step 2 is sintered；Step 4: surface grinding process polishing: being carried out to sintered blank；Step 5, it measures: carrying out the density measurement of tungsten-copper alloy to tungsten-copper alloy framework ingredient sintered in step 3；Step 6, hot pressing hot pressing: is carried out to the tungsten-copper alloy skeleton that step 3 obtains；Step 7, step 6 is repeated 3 times.The advantages of temperature is rationally arranged a kind of above-mentioned method for preparing tungsten-copper alloy during the sintering process with that can make tungsten-copper alloy, while the tungsten-copper alloy skeletal density for being sintered generation is improved, product is allow to meet requirement very well.
Description
Technical field
The present invention relates to technical field of alloy, especially a kind of method for preparing tungsten-copper alloy.
Background technique
Tungsten-copper alloy is " pseudo-alloy " being made of high-melting-point, the tungsten of high rigidity and highly conductive, thermal conductivity copper.It has
There are good resistance to arc erosion, resistance fusion welding, high intensity, high rigidity.In addition, its thermally conductive, electric conductivity and heat are swollen
Swollen coefficient can be designed by adjusting tungsten, copper constituent content.Therefore, tungsten-copper alloy is widely used as electrical contact material, electricity
Military project material (such as fire of welding resistance, electrical discharge machining and plasma electrode material, electrothermal alloy and heavy alloy, specific use
Arrow nozzle, aircraft larynx lining) etc..In addition, tungsten-copper alloy is also used for computer central processing system, large scale integrated circuit draws
The heat sink substrate of the electronic devices such as wire frame and solid state microwave pipe.
With the continuous development of new and high technology, tungsten-copper alloy is applied in more fields.Especially in terms of military project, example
Such as aerospace craft, tank high explosive anti-tank cartridge medicine cover, increase the material of the nozzle of journey big gun, magnetic artillery track.These fields
Requirement for tungsten-copper alloy performance is considerably beyond the requirement as general contact material.Therefore, tungsten-copper composite material is improved
Physical property and processability produce high performance product, are always the hot spot of domestic and foreign scholars' research.
But the existing method for preparing tungsten-copper alloy, since temperature setting is not reasonable in sintering process, while after sintering
The tungsten-copper alloy skeletal density of generation is lower, and product obtained is made not to be well positioned to meet requirement.
Summary of the invention
In view of the above situation, it is necessary to which providing one kind can be such that temperature in sintering process is rationally arranged, while be sintered generation
Tungsten-copper alloy skeletal density be improved, so that product is met requirement very well.
A method of preparing tungsten-copper alloy, comprising the following steps:
Step 1, it mixes: using mass percent for the tungsten powder of the copper powder of 20%-45% and mass percent 55%-80%
Uniformly mixing 8-10 hours；
Step 2, green compact: by step 1 tungsten powder and copper powder be pressed and molded under pressure after mixing, obtain green compact；
Step 3, it is sintered: green compact obtained in step 2 is sintered, sintering temperature is 900-1200 DEG C, sintering time
It is 40-60 minutes, obtains tungsten-copper alloy skeleton；
Step 4: surface grinding process polishing: being carried out to sintered blank；
Step 5, it measures: carrying out the density measurement of tungsten-copper alloy to tungsten-copper alloy framework ingredient sintered in step 3；
Step 6, hot pressing: carrying out hot pressing to the tungsten-copper alloy skeleton that step 3 obtains, and the temperature of hot pressing is 700-1000 DEG C,
Hot pressing time is preferably 2-5 minutes；
Step 7, step 6 is repeated 3 times.
The mass percent 20% of copper powder in above-mentioned steps 1, the mass percent of tungsten powder are 80%, copper in the step 1
The mass percent 45% of powder, the mass percent of tungsten powder are 55%, the mass percent 30% of copper powder, tungsten in the step 1
The mass percent of powder is 70%, and green compact is placed in nitrogen atmosphere, nitrogen atmosphere or reducing atmosphere furnace in the step 3 and is carried out
It is sintered, pressure is 2000~3500KN, tungsten-copper alloy skeleton in the step 6 in tungsten-copper alloy skeleton hot pressing in the step 6
Pressure is 2800KN in hot pressing, and it is qualified product, the step that the relative density that tungsten-copper alloy is measured in the step 5, which is greater than 98%,
4 surface treatment includes following manner: removing micro-crack, the removal oxidation spot, the rough place of polishing on surface.
The present invention can make tungsten-copper alloy, and temperature is rationally arranged during the sintering process, while being sintered the tungsten-copper alloy bone of generation
Frame density is improved, and product is allow to meet requirement very well.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following are embodiments, to the present invention one
The method that kind prepares tungsten-copper alloy is further elaborated.It should be appreciated that specific embodiment described herein only to
It explains the present invention, is not intended to limit the present invention.
Embodiment 1:
A kind of method for preparing tungsten-copper alloy of the embodiment of the present invention, comprising the following steps:
Step 1, it mixes: using mass percent for the tungsten powder of the copper powder of 20%-45% and mass percent 55%-80%
Uniformly mixing 8-10 hours；
Step 2, green compact: by step 1 tungsten powder and copper powder be pressed and molded under pressure after mixing, obtain green compact；
Step 3, it is sintered: green compact obtained in step 2 being sintered, green compact is placed in nitrogen atmosphere, nitrogen atmosphere or reduction
Property atmosphere furnace in be sintered, sintering temperature be 900-1200 DEG C, sintering time be 40-60 minutes, obtain tungsten-copper alloy skeleton；
Step 4: polishing: carrying out surface grinding process to sintered blank, removes micro-crack, the removal oxidation on surface
Spot, the rough place of polishing；
Step 5, it measures: carrying out the density measurement of tungsten-copper alloy to tungsten-copper alloy framework ingredient sintered in step 3, survey
It is qualified product that the relative density for determining tungsten-copper alloy, which is greater than 98%,；
Step 6, hot pressing: hot pressing is carried out to the tungsten-copper alloy skeleton that step 3 obtains, pressure is in tungsten-copper alloy skeleton hot pressing
2000~3500KN, the temperature of hot pressing are 700-1000 DEG C, and hot pressing time is preferably 2-5 minutes；
Step 7, step 6 is repeated 3 times.
Embodiment 2:
A kind of method for preparing tungsten-copper alloy of the embodiment of the present invention, comprising the following steps:
Step 1, it mixes: mass percent being used uniformly to mix 8- for 20% copper powder and the tungsten powder of mass percent 80%
10 hours；
Step 2, green compact: by step 1 tungsten powder and copper powder be pressed and molded under pressure after mixing, obtain green compact；
Step 3, it is sintered: green compact obtained in step 2 being sintered, green compact is placed in nitrogen atmosphere, nitrogen atmosphere or reduction
Property atmosphere furnace in be sintered, sintering temperature be 900-1200 DEG C, sintering time be 40-60 minutes, obtain tungsten-copper alloy skeleton；
Step 4: polishing: carrying out surface grinding process to sintered blank, removes micro-crack, the removal oxidation on surface
Spot, the rough place of polishing；
Step 5, it measures: carrying out the density measurement of tungsten-copper alloy to tungsten-copper alloy framework ingredient sintered in step 3, survey
It is qualified product that the relative density for determining tungsten-copper alloy, which is greater than 98%,；
Step 6, hot pressing: hot pressing is carried out to the tungsten-copper alloy skeleton that step 3 obtains, pressure is in tungsten-copper alloy skeleton hot pressing
2000~3500KN, the temperature of hot pressing are 700-1000 DEG C, and hot pressing time is preferably 2-5 minutes；
Step 7, step 6 is repeated 3 times.
Embodiment 3:
A kind of method for preparing tungsten-copper alloy of the embodiment of the present invention, comprising the following steps:
Step 1, it mixes: mass percent being used uniformly to mix 8- for 45% copper powder and the tungsten powder of mass percent 55%
10 hours；
Step 2, green compact: by step 1 tungsten powder and copper powder be pressed and molded under pressure after mixing, obtain green compact；
Step 3, it is sintered: green compact obtained in step 2 being sintered, green compact is placed in nitrogen atmosphere, nitrogen atmosphere or reduction
Property atmosphere furnace in be sintered, sintering temperature be 900-1200 DEG C, sintering time be 40-60 minutes, obtain tungsten-copper alloy skeleton；
Step 4: polishing: carrying out surface grinding process to sintered blank, removes micro-crack, the removal oxidation on surface
Spot, the rough place of polishing；
Step 5, it measures: carrying out the density measurement of tungsten-copper alloy to tungsten-copper alloy framework ingredient sintered in step 3, survey
It is qualified product that the relative density for determining tungsten-copper alloy, which is greater than 98%,；
Step 6, hot pressing: hot pressing is carried out to the tungsten-copper alloy skeleton that step 3 obtains, pressure is in tungsten-copper alloy skeleton hot pressing
2000~3500KN, the temperature of hot pressing are 700-1000 DEG C, and hot pressing time is preferably 2-5 minutes；
Step 7, step 6 is repeated 3 times.
Embodiment 4:
A kind of method for preparing tungsten-copper alloy of the embodiment of the present invention, comprising the following steps:
Step 1, it mixes: mass percent being used uniformly to mix 8- for 30% copper powder and the tungsten powder of mass percent 70%
10 hours；
Step 2, green compact: by step 1 tungsten powder and copper powder be pressed and molded under pressure after mixing, obtain green compact；
Step 3, it is sintered: green compact obtained in step 2 being sintered, green compact is placed in nitrogen atmosphere, nitrogen atmosphere or reduction
Property atmosphere furnace in be sintered, sintering temperature be 900-1200 DEG C, sintering time be 40-60 minutes, obtain tungsten-copper alloy skeleton；
Step 4: polishing: carrying out surface grinding process to sintered blank, removes micro-crack, the removal oxidation on surface
Spot, the rough place of polishing；
Step 5, it measures: carrying out the density measurement of tungsten-copper alloy to tungsten-copper alloy framework ingredient sintered in step 3, survey
It is qualified product that the relative density for determining tungsten-copper alloy, which is greater than 98%,；
Step 6, hot pressing: hot pressing is carried out to the tungsten-copper alloy skeleton that step 3 obtains, pressure is in tungsten-copper alloy skeleton hot pressing
2000~3500KN, the temperature of hot pressing are 700-1000 DEG C, and hot pressing time is preferably 2-5 minutes；
Step 7, step 6 is repeated 3 times.
The present invention can make tungsten-copper alloy, and temperature is rationally arranged during the sintering process, while being sintered the tungsten-copper alloy bone of generation
Frame density is improved, and product is allow to meet requirement very well.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above are modified or are modified
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (9)
1. a kind of method for preparing tungsten-copper alloy, it is characterised in that: the following steps are included:
Step 1, it mixes: using mass percent uniform for the tungsten powder of the copper powder of 20%-45% and mass percent 55%-80%
Mixing 8-10 hours；
Step 2, green compact: by step 1 tungsten powder and copper powder be pressed and molded under pressure after mixing, obtain green compact；
Step 3, it is sintered: green compact obtained in step 2 is sintered, sintering temperature is 900-1200 DEG C, sintering time 40-
60 minutes, obtain tungsten-copper alloy skeleton；
Step 4: surface grinding process polishing: being carried out to sintered blank；
Step 5, it measures: carrying out the density measurement of tungsten-copper alloy to tungsten-copper alloy framework ingredient sintered in step 3；
Step 6, hot pressing: hot pressing is carried out to the tungsten-copper alloy skeleton that step 3 obtains, the temperature of hot pressing is 700-1000 DEG C, hot pressing
Time is preferably 2-5 minutes；
Step 7, step 6 is repeated 3 times.
2. a kind of method for preparing tungsten-copper alloy as described in claim 1, it is characterised in that: the matter of copper powder in the step 1
Percentage 20% is measured, the mass percent of tungsten powder is 80%.
3. a kind of method for preparing tungsten-copper alloy as described in claim 1, it is characterised in that: the matter of copper powder in the step 1
Percentage 45% is measured, the mass percent of tungsten powder is 55%.
4. a kind of method for preparing tungsten-copper alloy as described in claim 1, it is characterised in that: the matter of copper powder in the step 1
Percentage 30% is measured, the mass percent of tungsten powder is 70%.
5. a kind of method for preparing tungsten-copper alloy as described in claim 1, it is characterised in that: put green compact in the step 3
It is placed in nitrogen atmosphere, nitrogen atmosphere or reducing atmosphere furnace and is sintered.
6. a kind of method for preparing tungsten-copper alloy as described in claim 1, it is characterised in that: tungsten-copper alloy in the step 6
Pressure is 2000~3500KN in skeleton hot pressing.
7. a kind of method for preparing tungsten-copper alloy as claimed in claim 6, it is characterised in that: tungsten-copper alloy in the step 6
Pressure is 2800KN in skeleton hot pressing.
8. a kind of method for preparing tungsten-copper alloy as described in claim 1, it is characterised in that: measure tungsten copper in the step 5
It is qualified product that the relative density of alloy, which is greater than 98%,.
9. a kind of method for preparing tungsten-copper alloy as described in claim 1, it is characterised in that: the surface treatment of the step 4
Including following manner: removing micro-crack, the removal oxidation spot, the rough place of polishing on surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811540004.3A CN109609792A (en) | 2018-12-17 | 2018-12-17 | A method of preparing tungsten-copper alloy |
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| CN201811540004.3A CN109609792A (en) | 2018-12-17 | 2018-12-17 | A method of preparing tungsten-copper alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299591A (en) * | 2020-04-15 | 2020-06-19 | 无锡乐普金属科技有限公司 | Preparation method of tungsten-copper alloy plate |
| CN114959333A (en) * | 2022-05-31 | 2022-08-30 | 河源市凯源硬质合金股份有限公司 | Tungsten-copper alloy and preparation method thereof |
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| JPH09143591A (en) * | 1995-11-28 | 1997-06-03 | Sumitomo Metal Mining Co Ltd | Production of tungsten copper alloy sintered body |
| CN1995438A (en) * | 2006-12-22 | 2007-07-11 | 株洲硬质合金集团有限公司 | Method for preparing elconite |
| WO2012050271A1 (en) * | 2010-10-12 | 2012-04-19 | Agency For Defense Development | Alloy of tungsten (w) and copper (cu) having functionally graded material (fgm) layers, metal material having the same and manufacturing method for alloy of w and cu |
| CN103981389A (en) * | 2014-05-15 | 2014-08-13 | 厦门理工学院 | Method for preparing tungsten-copper alloy by low-temperature sintering of tungsten skeleton |
| 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 |
| CN104384518A (en) * | 2014-10-27 | 2015-03-04 | 浙江立泰复合材料有限公司 | Method for coating copper on surface of tungsten copper carbide alloy composite material |
| CN104404282A (en) * | 2014-12-02 | 2015-03-11 | 天龙钨钼（天津）有限公司 | Tungsten copper alloy with low tungsten content and preparation method of tungsten copper alloy |
-
2018
- 2018-12-17 CN CN201811540004.3A patent/CN109609792A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09143591A (en) * | 1995-11-28 | 1997-06-03 | Sumitomo Metal Mining Co Ltd | Production of tungsten copper alloy sintered body |
| CN1995438A (en) * | 2006-12-22 | 2007-07-11 | 株洲硬质合金集团有限公司 | Method for preparing elconite |
| WO2012050271A1 (en) * | 2010-10-12 | 2012-04-19 | Agency For Defense Development | Alloy of tungsten (w) and copper (cu) having functionally graded material (fgm) layers, metal material having the same and manufacturing method for alloy of w and cu |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299591A (en) * | 2020-04-15 | 2020-06-19 | 无锡乐普金属科技有限公司 | Preparation method of tungsten-copper alloy plate |
| CN114959333A (en) * | 2022-05-31 | 2022-08-30 | 河源市凯源硬质合金股份有限公司 | Tungsten-copper alloy and preparation method thereof |
| CN114959333B (en) * | 2022-05-31 | 2022-11-11 | 河源市凯源硬质合金股份有限公司 | Tungsten-copper alloy and preparation method thereof |
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