CN107058841A - A kind of high mechanical properties tungsten alloy material and preparation method thereof - Google Patents
A kind of high mechanical properties tungsten alloy material and preparation method thereof Download PDFInfo
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- CN107058841A CN107058841A CN201710518375.0A CN201710518375A CN107058841A CN 107058841 A CN107058841 A CN 107058841A CN 201710518375 A CN201710518375 A CN 201710518375A CN 107058841 A CN107058841 A CN 107058841A
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- tungsten alloy
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- 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
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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
- C22C1/05—Mixtures of metal powder with non-metallic powder
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Abstract
The present invention relates to a kind of high mechanical properties tungsten alloy material and preparation method thereof, by following material composition by mass percentage：W：90%；Ni：3 5%；Fe：1 3%；Mo：1 3%；Co：0.1 1%；Si3N4:0.1 2%, its preparation method is：Material powder is added in vacuum ball grinder by proportioning weighing, abrasive media is added, is vacuumized with vavuum pump；Vacuum ball grinder is put into the 30h of ball milling 15 in high energy ball mill；Vacuum ball grinder is taken out, quick volatilization abrasive media ethanol is pressed into the base substrate of shaping by mould；The base substrate of shaping is put into vacuum tube furnace and sintered, sintering temperature is 1,220 1280 DEG C, soaking time is 30 90min.Tungsten alloy material prepared by the present invention handles hardness up to 60HRC without mechanical enhancer, and tensile strength is up to 1280Mpa.
Description
Technical field：
The present invention relates to vehicle powder metallurgy field of material preparation, more particularly to a kind of high mechanical properties tungsten is closed
Golden material and preparation method thereof, the tungsten for being related to the doping of W-Ni-Fe systems alloy and other metal dusts and compound and preparing is closed
Golden material.
Background technology：
Tungsten-bast alloy is a kind of using tungsten as hard phase, the composite using ambrose alloy or ferronickel to cohere phase composition.Tungsten base is closed
Gold utensil has that density height, good toughness, thermal coefficient of expansion are small and corrosion resistance is widely used in by force information and power, metallurgy, aviation
Space flight, defence and military and core industry.Development and the demand of people with science and technology, have higher to the performance of tungsten alloy
It is required that, existing conventional tungsten alloy is mainly synthesized by tungsten ferronickel powder, generally doping cobalt powder and molybdenum powder, and general tungsten alloy is (logical at present
Often be tungsten nickel iron alloy) hardness be 45-50HRC, tensile strength is 800-1150Mpa, and current typically tungsten alloy can not
Meet the demand of people, it is therefore necessary to ensure its combination property (high specific gravity, thermal coefficient of expansion is small and corrosion resistance) not by
The premise of influence improves the hardness and tensile strength of tungsten alloy.
The content of the invention：
The present invention be directed in place of the deficiencies in the prior art, the first purpose is to provide a kind of high mechanical properties tungsten alloy material
Material, the second purpose is to provide a kind of preparation method of high mechanical properties tungsten alloy material, the present invention by the doping of silicon nitride,
Ensure that improving tungsten on the premise of the combination property (high specific gravity, thermal coefficient of expansion is small and corrosion resistance) of tungsten-bast alloy is unaffected closes
The hardness and tensile strength of gold.
The technology solution of the present invention is as follows：
A kind of high mechanical properties tungsten alloy material, tungsten alloy material is by following material composition by mass percentage：W：
90%；Ni：3-5%；Fe：1-3%；:Mo：1-3%；Co：0.1-1%；Si3N4:0.1-2%.
Preferably, W, Ni, Fe, Mo Co and Si3N4Respectively dusty material, the particle diameter of the tungsten powder is 1-
10um；Nickel powder is carbonyl nickel powder, and particle diameter is less than 10um；Iron powder is carbonyl iron dust, and particle diameter is 1-10um.
A kind of preparation method of high mechanical properties tungsten alloy material, comprises the following steps：
The first step：Material powder is added in vacuum ball grinder by proportioning weighing, abrasive media is added, uses vacuum pumping
Vacuum；
Second step：Vacuum ball grinder is put into ball milling 15-30h in high energy ball mill, abrading-ball used is tungsten alloy ball, ball material
Than for 10:1；
3rd step：Vacuum ball grinder is taken out, quick volatilization abrasive media ethanol is pressed into the base substrate of shaping by mould；
4th step：The base substrate of shaping is put into vacuum tube furnace and sintered, sintering temperature is 1220-1280 DEG C, during insulation
Between be 30-90min.
Preferably, the abrasive media is ethanol.
Preferably, in second step, the rotational speed of ball-mill of described ball mill is 250r/min.
Preferably, in the 4th step, argon gas is passed through in described sintering process as protective gas.
The beneficial effects of the present invention are：
Present invention seek to address that tungsten alloy low intensity, tensile strength is low, deflection is big and the problems such as cost.Existing routine
Tungsten alloy is mainly synthesized by tungsten ferronickel powder, generally doping cobalt powder and molybdenum powder, and basis is carried the present invention by doped silicon nitride herein
The mechanical performance of high-tungsten alloy material.
Inventive formulation rationally, adds appropriate cobalt and molybdenum and silicon nitride.Because the atomic radius of molybdenum is close with tungsten,
In sintering process, molybdenum can replace part tungsten, so as to prevent tungsten grain from growing up.Silicon nitride is a kind of superhard material, and itself
With lubricity, the control to deformation in sintering process has good booster action, and lifts the intensity of tungsten alloy.Cobalt
Addition can improve wellability and interface binding power of the Ni-based solid solution to tungsten particle, make up molybdenum doping to tungsten alloy elongation percentage
The deficiency of decline.The tungsten alloy prepared by present component formula has higher intensity and hardness.
Embodiment：
Embodiment 1,
A kind of high mechanical properties tungsten alloy material and preparation method thereof, by following material composition by mass percentage：
W：90%；Ni：4.2%；Fe：1.8%；:Mo：2%；Co：1%；Si3N4:1%.Above-mentioned raw materials powder is weighed by proportioning and added
Into vacuum ball grinder, 25ml ethanol is added as abrasive media, is vacuumized with vavuum pump；Vacuum ball grinder is put into high energy ball
Ball milling 24h in grinding machine, abrading-ball used is tungsten alloy ball, and ratio of grinding media to material is 10:1, a variety of former powder are sufficiently mixed uniformly by ball milling, and will
It is thinner that powder is ground, and powder is more activity to be more preferably more conducive to sintering；Vacuum ball grinder is taken out, ethanol flash baking is used
Base substrate is made by DY-30 type tablet press machines in fixed grinding tool；The base substrate of shaping is put into vacuum tube furnace and sintered, argon gas is passed through
As protective gas, sintering temperature is 1250 DEG C, and soaking time is 1h.
The tungsten alloy material prepared by the formula and method of embodiment 1, carries out postorder processing, its tungsten to sample on request
Hardness is 55HRC under alloy at normal temperature, and tensile strength is 1250Mpa.
Embodiment 2：
A kind of high mechanical properties tungsten alloy material and preparation method thereof, by following material composition by mass percentage：
W：90%；Ni：3.5%；Fe：1.5%；:Mo：2%；Co：1%；Si3N4:2%.Above-mentioned raw materials powder is weighed by proportioning and added
Into vacuum ball grinder, 25ml ethanol is added as abrasive media, is vacuumized with vavuum pump；Vacuum ball grinder is put into high energy ball
Ball milling 24h in grinding machine, abrading-ball used is tungsten alloy ball, and ratio of grinding media to material is 10:1；Vacuum ball grinder is taken out, by ethanol flash baking,
Base substrate is made by DY-30 type tablet press machines with fixed grinding tool；The base substrate of shaping is put into vacuum tube furnace and sintered, argon is passed through
Gas is 1250 DEG C as protective gas, sintering temperature, and soaking time is 1h.
The tungsten alloy material prepared by the formula and method of embodiment 2, carries out postorder processing, its tungsten to sample on request
Hardness is 60HRC under alloy at normal temperature, and tensile strength is 1280Mpa.
Above-described embodiment is the specific descriptions carried out to the present invention, simply the present invention is further described, it is impossible to manage
Solve as limiting the scope of the present invention, it is nonessential that those skilled in the art makes some according to the content of foregoing invention
Modifications and adaptations are each fallen within protection scope of the present invention.
Claims (6)
1. a kind of high mechanical properties tungsten alloy material, it is characterised in that：Tungsten alloy material is by following thing by mass percentage
Matter is constituted：W：90%；Ni：3-5%；Fe：1-3%；:Mo：1-3%；Co：0.1-1%；Si3N4:0.1-2%.
2. a kind of high mechanical properties tungsten alloy material according to claim 1, it is characterised in that：Described W, Ni, Fe, Mo
Co and Si3N4Respectively dusty material, the particle diameter of the tungsten powder is 1-10um；Nickel powder is carbonyl nickel powder, and particle diameter is less than 10um；
Iron powder is carbonyl iron dust, and particle diameter is 1-10um.
3. a kind of preparation method of high mechanical properties tungsten alloy material as claimed in claim 1, it is characterised in that：Including as follows
Step：
The first step：Material powder is added in vacuum ball grinder by proportioning weighing, abrasive media is added, it is true with vacuum pumping
It is empty；
Second step：Vacuum ball grinder is put into ball milling 15-30h in high energy ball mill, abrading-ball used is tungsten alloy ball, and ratio of grinding media to material is
10:1；
3rd step：Vacuum ball grinder is taken out, quick volatilization abrasive media ethanol is pressed into the base substrate of shaping by mould；
4th step：The base substrate of shaping is put into vacuum tube furnace and sintered, sintering temperature is 1220-1280 DEG C, soaking time is
30-90min。
4. a kind of preparation method of high mechanical properties tungsten alloy material according to claim 3, it is characterised in that：It is described to grind
Grinding media is ethanol.
5. a kind of preparation method of high mechanical properties tungsten alloy material according to claim 3, it is characterised in that：Second step
In, the rotational speed of ball-mill of described ball mill is 250r/min.
6. a kind of preparation method of high mechanical properties tungsten alloy material according to claim 3, it is characterised in that：4th step
In, argon gas is passed through in described sintering process as protective gas.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109161771A (en) * | 2018-11-22 | 2019-01-08 | 江苏经纬阀业有限公司 | Novel tungsten alloy and preparation method thereof |
| CN113913664A (en) * | 2021-07-13 | 2022-01-11 | 中国科学院兰州化学物理研究所 | Silicon nitride reinforced tungsten and tungsten alloy material and preparation method thereof |
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| CN1033651A (en) * | 1987-10-23 | 1989-07-05 | 西蒙·鲍库茨 | The tungsten ferronickel heavy alloy and the production method thereof of very high mechanical properties |
| US20040079191A1 (en) * | 2002-10-24 | 2004-04-29 | Toshiba Tungaloy Co., Ltd. | Hard alloy and W-based composite carbide powder used as starting material |
| CN101423912A (en) * | 2008-12-03 | 2009-05-06 | 华南理工大学 | Nanocrystalline tungsten-based alloy block body material and preparation method thereof |
| CN103789592A (en) * | 2014-01-24 | 2014-05-14 | 株洲华美钨合金有限公司 | Tungsten alloy material and preparation method and application thereof in preparation of molten aluminum filter disc |
| CN104357725A (en) * | 2014-10-21 | 2015-02-18 | 常熟市金成模具有限公司 | High-temperature-resistant metal ceramic die material |
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2017
- 2017-06-29 CN CN201710518375.0A patent/CN107058841B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033651A (en) * | 1987-10-23 | 1989-07-05 | 西蒙·鲍库茨 | The tungsten ferronickel heavy alloy and the production method thereof of very high mechanical properties |
| US20040079191A1 (en) * | 2002-10-24 | 2004-04-29 | Toshiba Tungaloy Co., Ltd. | Hard alloy and W-based composite carbide powder used as starting material |
| CN101423912A (en) * | 2008-12-03 | 2009-05-06 | 华南理工大学 | Nanocrystalline tungsten-based alloy block body material and preparation method thereof |
| CN103789592A (en) * | 2014-01-24 | 2014-05-14 | 株洲华美钨合金有限公司 | Tungsten alloy material and preparation method and application thereof in preparation of molten aluminum filter disc |
| CN104357725A (en) * | 2014-10-21 | 2015-02-18 | 常熟市金成模具有限公司 | High-temperature-resistant metal ceramic die material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109161771A (en) * | 2018-11-22 | 2019-01-08 | 江苏经纬阀业有限公司 | Novel tungsten alloy and preparation method thereof |
| CN113913664A (en) * | 2021-07-13 | 2022-01-11 | 中国科学院兰州化学物理研究所 | Silicon nitride reinforced tungsten and tungsten alloy material and preparation method thereof |
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Denomination of invention: High mechanical strength tungsten alloy material and preparation method thereof Effective date of registration: 20210913 Granted publication date: 20181221 Pledgee: Huzhou Wuxing Rural Commercial Bank Co.,Ltd. Yangxi sub branch Pledgor: ZHEJIANG CHANT NEW MATERIALS TECHNOLOGY Co.,Ltd. Registration number: Y2021330001343 |