CN108300903A - White tungsten alloy and preparation method thereof - Google Patents
White tungsten alloy and preparation method thereof Download PDFInfo
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- CN108300903A CN108300903A CN201710018157.0A CN201710018157A CN108300903A CN 108300903 A CN108300903 A CN 108300903A CN 201710018157 A CN201710018157 A CN 201710018157A CN 108300903 A CN108300903 A CN 108300903A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/102—Metallic powder coated with organic material
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/103—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing an organic binding agent comprising a mixture of, or obtained by reaction of, two or more components other than a solvent or a lubricating agent
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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
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
- B22F3/1025—Removal of binder or filler not by heating only
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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
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
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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
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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
- C22C1/0433—Nickel- or cobalt-based alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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Abstract
A kind of white tungsten alloy and preparation method thereof, includes the following components'mass percentage：Tungsten 20 35%；Cobalt 20 55%；Chromium 16 30%；Molybdenum 5 10%；Additive 0 5%；The additive be tantalum, niobium, vanadium, strontium, indium it is one or more.The tungsten of formula ratio, cobalt, chromium, molybdenum, additive are ground into the raw material powder of 500 mesh, addition binder is kneaded with raw material powder, by the raw material being kneaded by injection moulding, forms white tungsten alloy raw embryo；Subsequent dialogue tungsten alloy raw embryo ungrease treatment；Finally the white tungsten alloy raw embryo after degreasing is sintered at 1,200 1400 DEG C, 1 3h of soaking time.The white tungsten alloy hardness of the present invention is high, wearability is strong, good toughness, without magnetic, it is anticorrosive, anti-oxidant, "dead", nontoxic to human body, harmless, fanout free region can be contacted with human body zero distance, PM technique is used simultaneously, the ingredient that material can freely be designed, to obtain ideal perception effect；And energy near net state molded article, there are simple production process, at low cost, cost-effective, the advantages such as energy conservation and environmental protection.
Description
Technical field
The present invention relates to white tungsten alloy field, espespecially a kind of white tungsten alloy and preparation method thereof.
Background technology
With the development of the times, the level of consumption of people is higher and higher；It is more and more common to fashion, light and the pursuit of U.S.,
Demand and development to push high-grade luxury goods market is more and more vigorous；Pure platinum product, due to rare, the valence of resource
Lattice are extremely expensive, and mass consumption is restricted；It comes into being in the imitative platinum ornaments market of top grade；The study found that since high-performance is white
Tungsten alloy product have extremely high hardness, wear resistance, good toughness, without magnetic, bright in color can match in excellence or beauty with platinum, color is held
The good characteristics such as long, nontoxic to human body, harmless, no plating pollution, are widely used.
Mute black, steel grey or Bai Gangse is presented in common metal or the color and luster of alloy material, without as platinum color and luster
The metal or alloy material that can directly substitute.
The production method of traditional metal and alloy has melting, casting, forging and stamping, die casting etc., complex process, production cost
High, energy consumption and pollution are bigger, larger to environmental hazard, and are difficult to obtain ideal effect.
Invention content
One of in order to solve the above problem, a kind of pure platinum hardness of can effectively replace of present invention offer, wear resistance, toughness
It is good, without performances such as magnetic, bright in color, and color is lasting, nontoxic to human body, harmless, the white tungsten alloy that is polluted without plating, including
The component of following mass percent：
Tungsten 20-35%；
Cobalt 20-55%；
Chromium 16-30%；
Molybdenum 5-10%；
Additive 0-5%；
The additive be tantalum, niobium, vanadium, strontium, indium it is one or more.
Specifically, the additive is one or more in tantalum, niobium, vanadium, strontium, indium carbide.
In order to solve the above problem two, the present invention provides a kind of simple for process, low manufacture cost and environment friendly and pollution-free white
The production method of tungsten alloy, steps are as follows：A. white tungsten alloy raw embryo is prepared：By the tungsten of formula ratio, cobalt, chromium, molybdenum, additive grinding
At the raw material powder of 500 mesh, addition binder is kneaded with raw material powder, by the raw material being kneaded by injection moulding, is formed white
Tungsten alloy raw embryo；
B. white tungsten alloy raw embryo ungrease treatment；
C. white tungsten alloy raw embryo sintering：White tungsten alloy raw embryo after degreasing in step C is sintered at 1200-1400 DEG C,
Soaking time 1-3h.
Specifically, in step A, on the basis of the total amount of raw material powder and binder, the content of the raw material powder is total amount
80-90%, the binder content is the 10-20% of total amount, and raw material powder and binder are by kneading machine at 170-200 DEG C
It is kneaded.
Specifically, in step A, the raw material being kneaded is injection moulded by injection molding machine, and wherein injecting machine material tube is from material
Temperature section on the inside of cylinder feed inlet to barrel sequentially increases, respectively 150 DEG C -160 DEG C -170 DEG C -180 DEG C, projects pressure
40%-80%, issuing velocity 30-55m/s, dwell pressure 30-80%, pressurize speed 20-50m/s, dwell time 5-10s,
Pressure of foundation is 300MPa.
Specifically, the binder is paraffin, polyethylene glycol, zinc stearate, o-phthalic acid dibutyl ester, polyethylene, gathers
Propylene, polymethyl methacrylate, polyformaldehyde it is one or more.
Specifically, in step B, white tungsten alloy raw embryo degreasing method includes solvent degreasing, catalysis degreasing, thermal debinding, siphon
One kind in degreasing.
Specifically, the solvent that solvent degreasing uses is carbon tetrachloride, trichloro ethylene, tetrachloro-ethylene, dichloromethane, normal heptane
In it is one or more.
Specifically, it is carried out in gas shield continuous oven or vacuum drying oven in thermal debinding, wherein degreasing time is 4-15h, is taken off
Fat temperature is 110-130 DEG C.
Specifically, in step C, sintering carries out under an inert atmosphere or in vacuum state.
The beneficial effects of the present invention are：The white tungsten alloy hardness of the present invention is high, wearability is strong, good toughness, without magnetic, color and luster
Can match in excellence or beauty with platinum, anticorrosive, anti-oxidant, anti-" artificial perspiration ", it is "dead", nontoxic to human body, harmless, can with human body zero away from
From contact fanout free region, while this facture uses PM technique, due to can freely design the ingredient of material, to obtain
Ideal perception effect；And energy near net state molded article, there is simple production process, at low cost, cost-effective, energy conservation and environmental protection etc.
Technical advantage.
Specific implementation mode
Below by specific embodiment, the invention will be further described.
Embodiment 1
Group by weight percentage becomes：
Tungsten 26%
Cobalt 45%
Chromium 20%
Molybdenum 7%
Additive 2%
The additive is tantalum, niobium, vanadium, indium.
Binder is paraffin, stearic acid, o-phthalic acid dibutyl ester, polyethylene.
By the white tungsten alloy powder of 900 parts by weight, 83 parts by weight of polyoxymethylene, 5 weight account polyethylenes, 3 parts by weight paraffin, 1 weight
Part o-phthalic acid dibutyl ester, 1 parts by weight stearic acid are measured on kneading machine, 20min is kneaded at 190 DEG C.
Then the raw material powder that binder has been added is put into injection molding machine, adjusting parameter, barrel temperature is from hopper
Mouth to the temperature in barrel is divided into four sections, respectively 150 DEG C -160 DEG C -170 DEG C -180 DEG C, projects pressure 68%, issuing velocity
45m/s, dwell pressure 65%, pressurize speed 30m/s, dwell time 5s, pressure of foundation 300MPa.
After injection moulding, you can carry out degreasing to the white tungsten alloy green body that molding obtains.Degreasing method is that catalysis is de-,
The degreasing time is 10h, and skimming temp is 125 DEG C.
By white tungsten alloy biscuit in vacuum sintering furnace, setting process curve keeps the temperature 2h at 1350 DEG C and completes sintering.
To white tungsten alloy material product.It by sanding and polishing, is compared through spectrophotometer and platinum, color and luster and platinum similarity
98.8%.It observes by the naked eye, color and luster is uniform, and color is soft.
Embodiment 2
Group by weight percentage becomes：
Tungsten 25
Cobalt 50
Chromium 18
Molybdenum 5
Additive 2
The additive is tantalum, niobium, vanadium, indium.
Binder is paraffin, stearic acid, o-phthalic acid dibutyl ester, polyethylene.
By the white tungsten alloy powder of 900 parts by weight, 83 parts by weight of polyoxymethylene, 5 weight account polyethylenes, 3 parts by weight paraffin, 1 weight
Part o-phthalic acid dibutyl ester, 1 parts by weight stearic acid are measured on kneading machine, 20min is kneaded at 190 DEG C.
Then the raw material powder that binder has been added is put into injection molding machine, adjusting parameter, barrel temperature is from hopper
Mouth to the temperature in barrel is divided into four sections, respectively 150 DEG C -160 DEG C -170 DEG C -180 DEG C, projects pressure 68%, issuing velocity
45m/s, dwell pressure 65%, pressurize speed 30m/s, dwell time 5s, pressure of foundation 300MPa.
After injection moulding, you can carry out degreasing to the white tungsten alloy green body that molding obtains.Degreasing method is that catalysis is de-,
The degreasing time is 10h, and skimming temp is 125 DEG C.
By white tungsten alloy biscuit in vacuum sintering furnace, setting process curve keeps the temperature 2h at 1330 DEG C and completes sintering.
To white tungsten alloy material product.It by sanding and polishing, is compared through spectrophotometer and platinum, color and luster and platinum similarity
99.1%.It observes by the naked eye, color and luster is uniform, and color is soft.
Embodiment 3
Group by weight percentage becomes：
Tungsten 25
Cobalt 55
Chromium 13
Molybdenum 6
Additive 1
The additive is the carbide body of tantalum, niobium, vanadium, indium.
Binder is paraffin, stearic acid, o-phthalic acid dibutyl ester, polyethylene.
By the white tungsten alloy powder of 900 parts by weight, 83 parts by weight of polyoxymethylene, 5 weight account polyethylenes, 3 parts by weight paraffin, 1 weight
Part o-phthalic acid dibutyl ester, 1 parts by weight stearic acid are measured on kneading machine, 20min is kneaded at 190 DEG C.
Then the raw material powder that binder has been added is put into injection molding machine, adjusting parameter, barrel temperature is from hopper
Mouth to the temperature in barrel is divided into four sections, respectively 150 DEG C -160 DEG C -170 DEG C -180 DEG C, projects pressure 68%, issuing velocity
45m/s, dwell pressure 65%, pressurize speed 30m/s, dwell time 5s, pressure of foundation 300MPa.
After injection moulding, you can carry out degreasing to the white tungsten alloy green body that molding obtains.Degreasing method is that catalysis is de-,
The degreasing time is 10h, and skimming temp is 125 DEG C.
In vacuum sintering furnace, setting process curve keeps the temperature 2h at 1330 DEG C and completes sintering white tungsten alloy biscuit.It obtains
White tungsten alloy material product.It by sanding and polishing, is compared through spectrophotometer and platinum, color and luster and platinum similarity 99.3%.
It observes by the naked eye, color and luster is uniform, and color is soft.
Embodiment 4
Group by weight percentage becomes：
Tungsten 22
Cobalt 55
Chromium 16
Molybdenum 5
Additive 2
The additive is tantalum, niobium, vanadium, indium or their carbonization.
Binder is paraffin, stearic acid, o-phthalic acid dibutyl ester, polyethylene.
By the white tungsten alloy powder of 900 parts by weight, 83 parts by weight of polyoxymethylene, 5 weight account polyethylenes, 3 parts by weight paraffin, 1 weight
Part o-phthalic acid dibutyl ester, 1 parts by weight stearic acid are measured on kneading machine, 20min is kneaded at 190 DEG C.
Then the raw material powder that binder has been added is put into injection molding machine, adjusting parameter, barrel temperature is from hopper
Mouth to the temperature in barrel is divided into four sections, respectively 150 DEG C -160 DEG C -170 DEG C -180 DEG C, projects pressure 68%, issuing velocity
45m/s, dwell pressure 65%, pressurize speed 30m/s, dwell time 5s, pressure of foundation 300MPa.
After injection moulding, you can carry out degreasing to the white tungsten alloy green body that molding obtains.Degreasing method is that catalysis is de-,
The degreasing time is 10h, and skimming temp is 125 DEG C.
By white tungsten alloy biscuit in vacuum sintering furnace, setting process curve keeps the temperature 2h at 1320 DEG C and completes sintering.
To white tungsten alloy material product.It by sanding and polishing, is compared through spectrophotometer and platinum, color and luster and platinum similarity
99.7%.It observes by the naked eye, color and luster is uniform, and color is soft.
White tungsten alloy production method disclosed by the invention is can be seen that by above-described embodiment and comparative example, simple for process,
It is efficient, environmental-friendly, be that people show special preference to the product for possessing platinum color and luster, for ornaments it is at low cost, in beautiful color.
Embodiment of above be only the preferred embodiment of the present invention is described, not to the scope of the present invention into
Row limits, under the premise of not departing from design spirit of the present invention, technical side of this field ordinary engineering and technical personnel to the present invention
The various modifications and improvement that case is made should all fall into the protection domain of claims of the present invention determination.
Claims (10)
1. a kind of white tungsten alloy, which is characterized in that include the following components'mass percentage：
Tungsten 20-35%；
Cobalt 20-55%；
Chromium 16-30%；
Molybdenum 5-10%；
Additive 0-5%；
The additive be tantalum, niobium, vanadium, strontium, indium it is one or more.
2. white tungsten alloy according to claim 1, which is characterized in that the additive is tantalum, niobium, vanadium, strontium, indium carbide
In it is one or more.
3. a kind of production method of tungsten alloy white as described in claim 1, which is characterized in that include the following steps：
A. white tungsten alloy raw embryo is prepared：The tungsten of formula ratio, cobalt, chromium, molybdenum, additive are ground into the raw material powder of 500 mesh, added
Binder is kneaded with raw material powder, by the raw material being kneaded by injection moulding, forms white tungsten alloy raw embryo；
B. white tungsten alloy raw embryo ungrease treatment；
C. white tungsten alloy raw embryo sintering：White tungsten alloy raw embryo after degreasing in step C is sintered at 1200-1400 DEG C,
Soaking time 1-3h.
4. the production method of white tungsten alloy according to claim 3, which is characterized in that in step A, raw material powder and bonding
On the basis of the total amount of agent, the content of the raw material powder is the 80-90% of total amount, and the binder content is the 10-20% of total amount,
Raw material powder and binder are kneaded by kneading machine at 170-200 DEG C.
5. the production method of white tungsten alloy according to claim 3 or 4, which is characterized in that in step A, the original that is kneaded
Material is injection moulded by injection molding machine, and wherein injecting machine material tube sequentially increases from the temperature section on the inside of hopper mouth to barrel
Height, respectively 150 DEG C -160 DEG C -170 DEG C -180 DEG C project pressure 40%-80%, issuing velocity 30-55m/s, dwell pressure
30-80%, pressurize speed 20-50m/s, dwell time 5-10s, pressure of foundation 300MPa.
6. the production method of white tungsten alloy according to claim 4, which is characterized in that the binder is paraffin, poly- second
Glycol, zinc stearate, o-phthalic acid dibutyl ester, polyethylene, polypropylene, polymethyl methacrylate, polyformaldehyde one kind or
It is a variety of.
7. the production method of white tungsten alloy according to claim 3, which is characterized in that in step B, white tungsten alloy raw embryo is de-
Fat method includes one kind in solvent degreasing, catalysis degreasing, thermal debinding, siphon degreasing.
8. the production method of white tungsten alloy according to claim 6, which is characterized in that the solvent that solvent degreasing uses is four
It is one or more in chlorination carbon, trichloro ethylene, tetrachloro-ethylene, dichloromethane, normal heptane.
9. the production method of white tungsten alloy according to claim 6, which is characterized in that continuous in gas shield in thermal debinding
It is carried out in stove or vacuum drying oven, wherein degreasing time is 4-15h, and skimming temp is 110-130 DEG C.
10. the production method of white tungsten alloy according to claim 3, which is characterized in that in step C, be sintered in indifferent gas
It is carried out under atmosphere or in vacuum state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710018157.0A CN108300903A (en) | 2017-01-11 | 2017-01-11 | White tungsten alloy and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710018157.0A CN108300903A (en) | 2017-01-11 | 2017-01-11 | White tungsten alloy and preparation method thereof |
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| CN108300903A true CN108300903A (en) | 2018-07-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215662A (en) * | 2008-01-07 | 2008-07-09 | 刘嵘 | Tungsten alloy used for jewelry and ornamental article, and preparation method thereof |
| CN101994049A (en) * | 2009-08-24 | 2011-03-30 | 张乃文 | Tungsten alloy material and method for manufacturing jewelries |
| CN102807371A (en) * | 2011-05-31 | 2012-12-05 | 比亚迪股份有限公司 | Ceramic dyeing method |
| US20130287622A1 (en) * | 2012-04-27 | 2013-10-31 | Black & Blue | Metal alloy and jewelry articles formed therefrom |
| CN105154700A (en) * | 2015-09-24 | 2015-12-16 | 瑞声精密制造科技(常州)有限公司 | Heavy-density tungsten alloy |
-
2017
- 2017-01-11 CN CN201710018157.0A patent/CN108300903A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215662A (en) * | 2008-01-07 | 2008-07-09 | 刘嵘 | Tungsten alloy used for jewelry and ornamental article, and preparation method thereof |
| CN101994049A (en) * | 2009-08-24 | 2011-03-30 | 张乃文 | Tungsten alloy material and method for manufacturing jewelries |
| CN102807371A (en) * | 2011-05-31 | 2012-12-05 | 比亚迪股份有限公司 | Ceramic dyeing method |
| US20130287622A1 (en) * | 2012-04-27 | 2013-10-31 | Black & Blue | Metal alloy and jewelry articles formed therefrom |
| CN105154700A (en) * | 2015-09-24 | 2015-12-16 | 瑞声精密制造科技(常州)有限公司 | Heavy-density tungsten alloy |
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Application publication date: 20180720 |
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