CN106367651A - Preparation method of tungsten carbide alloy mixture - Google Patents
Preparation method of tungsten carbide alloy mixture Download PDFInfo
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- CN106367651A CN106367651A CN201610821809.XA CN201610821809A CN106367651A CN 106367651 A CN106367651 A CN 106367651A CN 201610821809 A CN201610821809 A CN 201610821809A CN 106367651 A CN106367651 A CN 106367651A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- 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
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/042—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling using a particular milling fluid
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
Abstract
The invention discloses a preparation method of a tungsten carbide alloy mixture. According to the preparation method of the tungsten carbide alloy mixture, raw materials including WC powder, Co powder and Cr3C2 power are adopted, polyethylene glycol is used as a forming agent, anhydrous alcohol is used as a solvent for wet ball-milling, and no dispersing agent is added, and polyethylene glycol serving as the forming agent is added into a wet ball-milling tank after wet ball-milling is conducted for two to three hours; all the production processes are conducted in a constant-temperature and constant-humidity clean workshop; and the forming agent is evenly dispersed in the cemented carbide mixture, no impurity is dragged into the mixture, the technique is easy and convenient to implement, and the cost is low.
Description
Technical field
Hard alloy preparation field of the present invention is and in particular to a kind of diamondite mixing preparation method for material.
Background technology
Hard alloy is the material of high rigidity, high intensity, high abrasion, is obtained for extensively in the various fields of modern production
Application.Hart metal product is typically with the carbide micron powder of high rigidity refractory metal as main component, with cobalt or nickel,
Molybdenum is binding agent, the sintered metal product sintering in vacuum drying oven or hydrogen reducing furnace.CEMENTED CARBIDE PRODUCTION generally comprises
Compound preparation, compressing and three megastages of sintering.For meeting compressing technological requirement, in compound preparatory phase,
Cemented carbide powder needs first to mix with various additives such as forming agents, to increase the intensity of product and to improve the compacting of compound
Processability.The critical process that hart metal product manufactures is it is simply that the preparation of carbide alloy mixture.
In carbide alloy mixture preparation process, forming agent to be reached is uniformly dispersed in hard alloy material, keeps away as far as possible
Exempt to bring other impurities, simple process into.In the prior art, the main forming agent adopting has rubber, paraffin, Polyethylene Glycol etc..
Preferably, major defect is that carbon residual is high to the mouldability of rubber-moulding agent, can reduce the toughness of hard alloy；Need to make of gasoline molten
Agent, make degumming carrier gas with hydrogen, the safety hazard of production and process costs are high.Wax moulding agent does not have residual carbon, but in work
Skill aspect is also very big limitation.First, paraffin at normal temperatures do not dissolve in wet grinding solvent ethanol, lead to paraffin ethanol,
Cannot be fully dispersed between cemented carbide powder, need special technique and cost to be overcome, Chinese patent
Cn200910079349.8 discloses one kind and paraffin first individually carries out pre-grinding, then again with cemented carbide powder, solvent, point
Powder wet grinding together, Chinese patent 201110230947.8 is using first being mixed paraffin with from dispersants such as Oleic acid, stearic acid
Close and grind, then wet grinding together with cemented carbide powder, solvent, Chinese patent 201410770610.x is using 58 DEG C of heating and melting
Paraffin wax fully refined, before 24 hours before wet grinding terminates, start wet grinding be added to cemented carbide powder and solvent afterwards within 5 hours
Wet milk in, although these schemes part overcomes paraffin and is difficult finely dispersed problem in the feed, fail to solve stone
Wax does not dissolve the problem not good with the moistening of cemented carbide powder in a solvent；Chinese patent 201010273174.7 discloses one
Kind melted paraffin wax is become molten mass, simultaneously by hard alloy wet grinding mixed material heating to higher than paraffin melting point temperature, to hard
Add the paraffin of fusing in matter alloy wet grinding compound, continue to heat and stir hard alloy wet grinding compound, wet grinding compound
Temperature be 65～90 DEG C, its shortcoming is that whole wet milling device needs continuous heating, and equipment cost and production cost are high, solvent
Ethanol volatilization is serious to apply it is difficult to obtain in actual production.Secondly, wax moulding agent needs the cooperation of the dispersants such as Oleic acid to make
With, dispersant using not only increasing cost, impurity may be led to bring in compound again, and may be in alloy after sintering
Form the defects such as hole, cause high percent defective；.
Polyethylene Glycol forming agent performance between rubber and paraffin, in the case of the humiture of strict management and control production scene,
Preferable yields and properties of product can be obtained.The skill of Chinese patent cn201010154111.x and cn201310738385.7
Art scheme, forming agent is also adopted by Polyethylene Glycol, the disadvantage is that, still employing dispersant, equally existing increase cost and leading to
The problem of impurity.The technical scheme of Chinese patent cn200910091185.0 and cn200810046453.2, forming agent is also adopted by
Polyethylene Glycol, the former, 48 ~ 56 hours the latter's wet grinding time, both are common drawback, during wet grinding 20 ~ 50 hours wet grinding time
Between long, lead to production cost high.Therefore, carbide alloy mixture preparation method is also improved space.
Content of the invention
In view of this, the embodiment of the present invention provides a kind of preparation method of diamondite compound, the raw material of the method
By wc powder, co powder and cr3c2Three kinds of powder body compositions of powder, using Polyethylene Glycol as forming agent, using anhydrous alcohol as wet method ball
Mill solvent, is not added with any dispersant, comprises the following steps:
(1) wc powder, co powder and cr are weighed respectively3c2Powder carries out feed proportioning, and the percentage by weight of wc powder is 80～88%, co powder
Percentage by weight be 10～19%, cr3c2The percentage by weight of powder is 1～2%, and weigh three kinds of powder body are uniformly mixed；
(2) raw material after mix homogeneously is sent in wet ball grinding tank, add wet ball grinding solvent anhydrous into wet ball grinding tank
Ethanol, based on three kinds of powder body gross weights, the addition of anhydrous alcohol is 250～350ml/kg, using wc hard alloy mill
Ball, ball material weight ratio for 1: 1, then starts wet ball grinding, and ball mill by wet process rotating speed is 30r/min；
(3), in the time period of 2 ~ 3 hours after wet ball grinding starts, add Polyethylene Glycol into wet ball grinding tank, with three kinds of powder
Based on body gross weight, the addition of Polyethylene Glycol is weight percentage 2.5～3.5%, and wet ball grinding total time is 12 hours；
(4), after wet ball grinding terminates, the compound in wet ball grinding tank is carried out sieving for the first time, screen cloth is 400 mesh；
(5) compound after first time sieving is vacuum dried, and removes wet ball grinding solvent anhydrous alcohol；
(6) compound after vacuum drying is sieved for the second time, screen cloth is 50 mesh, the compound after sieving is final
Diamondite compound.
Using forming agent molecular weight polyethylene glycol 2000 ~ 5000.
All production links are all carried out in the dust proof workshop of constant temperature and humidity, ambient temperature 25 ± 5 c, and ambient humidity 45% ±
5%.
The wc powder footpath 2.0 ~ 9.0um being adopted, co powder footpath 1.0 ~ 1.5um, cr3c2Powder footpath 1.0 ~ 1.5um.
Using technique scheme, the present invention/utility model at least can obtain following technique effects:
Using Polyethylene Glycol as forming agent, it is added without any dispersant it is achieved that forming agent disperses all in hard alloy material
A kind of diamondite mixing preparation method for material that is even, not bringing other impurities, simple process, low cost into.
Specific embodiment
For make present invention solves the technical problem that, the technical scheme that adopts and the technique effect that reaches clearer, below
The technical scheme of the embodiment of the present invention will be described in further detail it is clear that described embodiment is only the present invention
A part of embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those skilled in the art are not making
The every other embodiment being obtained under the premise of creative work, broadly falls into the scope of protection of the invention.
Embodiment one
To further illustrate technical scheme below by specific embodiment.It should be noted that the reality of the present invention
As a example applying example, technical scheme is illustrated, but not in this, as restriction.
A kind of preparation method of diamondite compound, the raw material of the method is by wc powder, co powder and cr3c2Three kinds of powder of powder
Body forms, and using Polyethylene Glycol as forming agent, using anhydrous alcohol as wet ball grinding solvent, is not added with any dispersant, bag
Include following steps:
(1) wc powder, co powder and cr are weighed respectively3c2Powder carries out feed proportioning, and the percentage by weight of wc powder is the weight of 80%, co powder
Amount percentage ratio is 19%, cr3c2The percentage by weight of powder is 1%, and weigh three kinds of powder body are uniformly mixed；
(2) raw material after mix homogeneously is sent in wet ball grinding tank, add wet ball grinding solvent anhydrous into wet ball grinding tank
Ethanol, based on three kinds of powder body gross weights, the addition of anhydrous alcohol is 250ml/kg, using wc hard alloy abrading-ball, ball
Material weight ratio for 1: 1, then starts wet ball grinding, and ball mill by wet process rotating speed is 30r/min；
(3) 2 hours after wet ball grinding starts, add Polyethylene Glycol into wet ball grinding tank, with three kinds of powder body gross weights as base
Plinth, the addition of Polyethylene Glycol is weight percentage 3.5%, and wet ball grinding total time is 12 hours；
(4) after wet ball grinding terminates, the compound in wet ball grinding tank is carried out first time wet type and sieves, screen cloth is 400 mesh；
(5) compound after first time sieving is vacuum dried, and removes wet ball grinding solvent anhydrous alcohol；
(6) compound after vacuum drying is sieved for the second time, screen cloth is 50 mesh, the compound after sieving is final
Diamondite compound.
Using forming agent molecular weight polyethylene glycol be 2000.
All production links are all carried out in the dust proof workshop of constant temperature and humidity, ambient temperature 25 ± 5 c, and ambient humidity 45% ±
5%.
The wc powder footpath 2.0 ~ 9.0um being adopted, co powder footpath 1.0 ~ 1.5um, cr3c2Powder footpath 1.0 ~ 1.5um.
Using technique scheme, the present invention at least can obtain following technique effects: using Polyethylene Glycol as forming agent,
Be added without any dispersant it is achieved that forming agent be uniformly dispersed in hard alloy material, do not bring into other impurities, simple process,
A kind of diamondite mixing preparation method for material of low cost.
Embodiment two
A kind of preparation method of diamondite compound, the raw material of the method is by wc powder, co powder and cr3c2Three kinds of powder body groups of powder
Become, using Polyethylene Glycol as forming agent, using anhydrous alcohol as wet ball grinding solvent, be not added with any dispersant, including with
Lower step:
(1) wc powder, co powder and cr are weighed respectively3c2Powder carries out feed proportioning, and the percentage by weight of wc powder is the weight of 88%, co powder
Amount percentage ratio is 10%, cr3c2The percentage by weight of powder is 2%, and weigh three kinds of powder body are uniformly mixed；
(2) raw material after mix homogeneously is sent in wet ball grinding tank, add wet ball grinding solvent anhydrous into wet ball grinding tank
Ethanol, based on three kinds of powder body gross weights, the addition of anhydrous alcohol is 350ml/kg, using wc hard alloy abrading-ball, ball
Material weight ratio for 1: 1, then starts wet ball grinding, and ball mill by wet process rotating speed is 30r/min；
(3) 3 hours after wet ball grinding starts, add Polyethylene Glycol into wet ball grinding tank, with three kinds of powder body gross weights as base
Plinth, the addition of Polyethylene Glycol is weight percentage 2.5%, and wet ball grinding total time is 12 hours；
(4) after wet ball grinding terminates, the compound in wet ball grinding tank is carried out first time wet type and sieves, screen cloth is 400 mesh；
(5) compound after first time sieving is vacuum dried, and removes wet ball grinding solvent anhydrous alcohol；
(6) compound after vacuum drying is sieved for the second time, screen cloth is 50 mesh, the compound after sieving is final
Diamondite compound.
Using forming agent molecular weight polyethylene glycol be 5000.
All production links are all carried out in the dust proof workshop of constant temperature and humidity, ambient temperature 25 ± 5 c, and ambient humidity 45% ±
5%.
The wc powder footpath 2.0 ~ 9.0um being adopted, co powder footpath 1.0 ~ 1.5um, cr3c2Powder footpath 1.0 ~ 1.5um.
Using technique scheme, the present invention/utility model at least can obtain following technique effects: is made using Polyethylene Glycol
For forming agent, be added without any dispersant it is achieved that forming agent be uniformly dispersed in hard alloy material, do not bring into other impurities,
Simple process, a kind of diamondite mixing preparation method for material of low cost.
Embodiment three
A kind of preparation method of diamondite compound, the raw material of the method is by wc powder, co powder and cr3c2Three kinds of powder body groups of powder
Become, using Polyethylene Glycol as forming agent, using anhydrous alcohol as wet ball grinding solvent, be not added with any dispersant, including with
Lower step:
(1) wc powder, co powder and cr are weighed respectively3c2Powder carries out feed proportioning, and the percentage by weight of wc powder is the weight of 85%, co powder
Amount percentage ratio is 14%, cr3c2The percentage by weight of powder is 1%, and weigh three kinds of powder body are uniformly mixed；
(2) raw material after mix homogeneously is sent in wet ball grinding tank, add wet ball grinding solvent anhydrous into wet ball grinding tank
Ethanol, based on three kinds of powder body gross weights, the addition of anhydrous alcohol is 300ml/kg, using wc hard alloy abrading-ball, ball
Material weight ratio for 1: 1, then starts wet ball grinding, and ball mill by wet process rotating speed is 30r/min；
(3) 2.5 hours after wet ball grinding starts, add Polyethylene Glycol into wet ball grinding tank, with three kinds of powder body gross weights be
Basis, the addition of Polyethylene Glycol is weight percentage 3%, and wet ball grinding total time is 12 hours；
(4) after wet ball grinding terminates, the compound in wet ball grinding tank is carried out first time wet type and sieves, screen cloth is 400 mesh；
(5) compound after first time sieving is vacuum dried, and removes wet ball grinding solvent anhydrous alcohol；
(6) compound after vacuum drying is sieved for the second time, screen cloth is 50 mesh, the compound after sieving is final
Diamondite compound.
Using forming agent molecular weight polyethylene glycol 2000 ~ 5000.
All production links are all carried out in the dust proof workshop of constant temperature and humidity, ambient temperature 25 ± 5 c, and ambient humidity 45% ±
5%.
The wc powder footpath 2.0 ~ 9.0um being adopted, co powder footpath 1.0 ~ 1.5um, cr3c2Powder footpath 1.0 ~ 1.5um.
Using technique scheme, the present invention/utility model at least can obtain following technique effects: is made using Polyethylene Glycol
For forming agent, be added without any dispersant it is achieved that forming agent be uniformly dispersed in hard alloy material, do not bring into other impurities,
Simple process, a kind of diamondite mixing preparation method for material of low cost.
Note, above are only presently preferred embodiments of the present invention.It will be appreciated by those skilled in the art that the invention is not restricted to here
Described specific embodiment, various obvious changes can be carried out for a person skilled in the art, readjust and substitute and
Without departing from the scope of protection of the present invention.Therefore although being described in further detail to the present invention by above example,
But the present invention is not limited only to above example, without departing from the inventive concept, can also include more other
Equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (4)
1. a kind of preparation method of diamondite compound is it is characterised in that the raw material of the method is by wc powder, co powder and cr3c2
Three kinds of powder body compositions of powder, using Polyethylene Glycol as forming agent, using anhydrous alcohol as wet ball grinding solvent, are not added with any point
Powder, comprises the following steps:
(1) wc powder, co powder and cr are weighed respectively3c2Powder carries out feed proportioning, and the percentage by weight of wc powder is 80～88%, co powder
Percentage by weight is 10～19%, cr3c2The percentage by weight of powder is 1～2%, and weigh three kinds of powder body are uniformly mixed；
(2) raw material after mix homogeneously is sent in wet ball grinding tank, add wet ball grinding solvent anhydrous into wet ball grinding tank
Ethanol, based on three kinds of powder body gross weights, the addition of anhydrous alcohol is 250～350ml/kg, using wc hard alloy mill
Ball, ball material weight ratio for 1: 1, then starts wet ball grinding, and ball mill by wet process rotating speed is 30r/min；
(3), in the time period of 2 ~ 3 hours after wet ball grinding starts, add Polyethylene Glycol into wet ball grinding tank, with three kinds of powder
Based on body gross weight, the addition of Polyethylene Glycol is weight percentage 2.5～3.5%, wet ball grinding total time is 12 hours；
(4) after wet ball grinding terminates, the compound in wet ball grinding tank is carried out first time wet type and sieves, screen cloth is 400 mesh；
(5) compound after first time sieving is vacuum dried, and removes wet ball grinding solvent anhydrous alcohol；
(6) compound after vacuum drying is sieved for the second time, screen cloth is 50 mesh, the compound after sieving is final
Diamondite compound.
2. diamondite compound as claimed in claim 1 preparation method it is characterised in that adopt the poly- second of forming agent two
Alcohol molecular weight is 2000 ~ 5000.
3. the preparation method of diamondite compound as claimed in claim 1 is it is characterised in that all production links are all in perseverance
The dust proof workshop of constant temperature and humidity is carried out, ambient temperature 25 ± 5 c, ambient humidity 45% ± 5%.
4. the preparation method of diamondite compound as claimed in claim 1 is it is characterised in that the wc powder footpath that adopted
2.0 ~ 9.0um, co powder footpath 1.0 ~ 1.5um, cr3c2Powder footpath 1.0 ~ 1.5um.
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| CN201610821809.XA CN106367651B (en) | 2016-09-14 | 2016-09-14 | A kind of diamondite mixing preparation method for material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107900362A (en) * | 2017-10-25 | 2018-04-13 | 浙江德威硬质合金制造有限公司 | New ball milling method prepares hard alloy |
| CN110102769A (en) * | 2019-05-14 | 2019-08-09 | 株洲特利亚硬质合金有限公司 | A kind of wet milling process conducive to high bonding phase cemented carbide uniform texture |
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| CN105734321A (en) * | 2016-03-01 | 2016-07-06 | 株洲硬质合金集团有限公司 | Preparing method for ultra-fine hard alloy |
| CN105772731A (en) * | 2014-12-15 | 2016-07-20 | 技锋精密刀具（马鞍山）有限公司 | Production process for hard alloy ultrathin round blades |
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| CN107900362A (en) * | 2017-10-25 | 2018-04-13 | 浙江德威硬质合金制造有限公司 | New ball milling method prepares hard alloy |
| CN110102769A (en) * | 2019-05-14 | 2019-08-09 | 株洲特利亚硬质合金有限公司 | A kind of wet milling process conducive to high bonding phase cemented carbide uniform texture |
| CN110102769B (en) * | 2019-05-14 | 2022-07-01 | 株洲特利亚硬质合金有限公司 | Wet grinding method beneficial to uniformity of high-binder phase hard alloy tissue structure |
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| CN106367651B (en) | 2017-12-26 |
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