CN109321800A - A kind of cemented carbide material and preparation method thereof - Google Patents
A kind of cemented carbide material and preparation method thereof Download PDFInfo
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- CN109321800A CN109321800A CN201811323579.XA CN201811323579A CN109321800A CN 109321800 A CN109321800 A CN 109321800A CN 201811323579 A CN201811323579 A CN 201811323579A CN 109321800 A CN109321800 A CN 109321800A
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- powder
- cemented carbide
- carbide material
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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
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
-
- 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
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
-
- 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
-
- 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 discloses a kind of cemented carbide materials, including following raw material by weight percentage: WC powder 91.5~92.5%, Co powder 5~6%, Cu powder 0.5~0.8%, Fe powder 0.5~1%, Ti powder 0.3~0.5%, TiB2Powder 0.3~0.5%.Also disclose preparation method.For the present invention using WC as hard phase, Co, Cu, Fe, Ti are Binder Phase, TiB2For reinforced phase, said components, which are arranged in pairs or groups, can significantly improve the hardness and wearability of WC matrix, and experiment shows present invention room temperature hardness with higher and high temperature hardness, be conducive to the high temperature abrasion resistance for improving WC-Co hard alloy.
Description
Technical field
The present invention relates to cemented carbide material technical fields, and in particular to it is a kind of using WC as the cemented carbide material of matrix and
Preparation method.
Background technique
Hard alloy is often referred to using transition metal carbides such as titanium, hafnium, vanadium, niobium, chromium, tungsten as hard phase, with iron family element
(iron, cobalt, nickel) powder is sintered using PM technique for Binder Phase and forms material, and with modulus height, intensity is big, thermally expands system
The advantages that low and chemical property of number are stablized is widely used in precision manufactureing, grinding tool and more demanding to corrosion resistance and wearability
Field.Wherein, WC-Co hard alloy is widely used in drilling, mining, cutting etc. due to having many advantages, such as high-intensitive, high rigidity
The field more demanding to wearability.But when sintering at high temperature, the possible abnormal growth of WC grain, influences the mechanical property of alloy
Energy and high temperature resistance easily cause alloy rigidity sharply to decline, limit answering for material especially when temperature is higher than 600 DEG C
Use range.Such as during the cutting process, the mechanical friction of workpiece and stage property may discharge a large amount of thermal energy, if edge hardness drops
Low, easily disfiguring workpiece surface influences cutting quality and cutting-tool's used life.
Summary of the invention
In view of the above shortcomings of the prior art, it is an object of the invention to provide a kind of WC-Co that high temperature abrasion resistance is excellent
Cemented carbide material and preparation method thereof.
To achieve the above object, the invention adopts the following technical scheme:
A kind of cemented carbide material, including following raw material by weight percentage: WC powder 91.5~92.5%, Co powder 5
~6%, Cu powder 0.5~0.8%, Fe powder 0.5~1%, Ti powder 0.3~0.5%, TiB2Powder 0.3~0.5%.
Preferably, WC powder, Co powder, Cu powder, Fe powder, Ti powder and TiB2The partial size of powder stands alone as 1~10 μm.
The preparation method of the cemented carbide material, comprising steps of
S1, by above-mentioned raw materials mix be added ball mill in, be added paraffin carry out wet-milling, be then dried in vacuo, cross 100~
200 meshes obtain uniformly mixed alloy powder；
S2, by alloy powder compression moulding made from step S1, obtain crude green body；
S3, the crude green body for obtaining step S2 carry out dewaxing treatment at vacuum, 300~350 DEG C, then successively 500~
Be sintered at 600 DEG C, 800~900 DEG C, 1000~1200 DEG C and 1600 DEG C, sintering time be respectively 2~3h, 1~1.5h, 0.5~
1h and 0.5h, then in 800~900 DEG C of 1~2h of annealing.
Preferably, the wet-milling is using dehydrated alcohol as medium, ratio of grinding media to material 3:1, liquid-solid ratio 400ml/kg, the time 40
~50h.
Preferably, the time of the dewaxing treatment is 0.5~1h.
Beneficial effects of the present invention:
For the present invention using WC as hard phase, Co, Cu, Fe, Ti are Binder Phase, TiB2For reinforced phase, said components collocation can be shown
The hardness and wearability for improving WC matrix are write, experiment shows present invention room temperature hardness with higher and high temperature hardness, is conducive to
Improve the high temperature abrasion resistance of WC-Co hard alloy.
Specific embodiment
Below by specific embodiment, the present invention will be described in detail.
In following embodiment and comparative example, raw material WC powder, Co powder, Cu powder, Fe powder, Ti powder and TiB2Powder is commercially available
The raw material of industry, partial size stand alone as 1~10 μm, and average grain diameter stands alone as 2~5 μm.
Embodiment 1
1, claim 91.5 parts by weight of WC powder, 6 parts by weight of Co powder, 0.6 parts by weight of Cu powder, 0.8 parts by weight of Fe powder, 0.4 weight of Ti powder
Measure part, TiB20.5 parts by weight of powder are added in ball mill after mixing, and control ratio of grinding media to material is 3:1, add by liquid-solid ratio for 400ml/kg
Entering dehydrated alcohol is medium, and after paraffin wet-milling 40h then is added, vacuum drying sieves with 100 mesh sieve, obtains uniformly mixed alloy
Powder；
2, by alloy powder compression moulding made from step 1, crude green body is obtained；
3, the crude green body that step 2 obtains is dewaxed 0.5h at vacuum, 350 DEG C；
4, it successively is sintered 0.5h at 500 DEG C of sintering 3h, 800 DEG C of sintering 1.5h, 1200 DEG C of 0.5h and 1600 DEG C of sintering, so
Afterwards in 900 DEG C of annealing 1h, cemented carbide material is obtained.
Embodiment 2
1, claim 92.2 parts by weight of WC powder, 5.5 parts by weight of Co powder, 0.8 parts by weight of Cu powder, 0.6 parts by weight of Fe powder, Ti powder 0.5
Parts by weight, TiB20.4 parts by weight of powder are added in ball mill after mixing, and control ratio of grinding media to material is 3:1, are 400ml/kg by liquid-solid ratio
Addition dehydrated alcohol is medium, and after paraffin wet-milling 50h then is added, vacuum drying sieves with 100 mesh sieve, obtains uniformly mixed conjunction
Bronze end；
2, by alloy powder compression moulding made from step 1, crude green body is obtained；
3, by step 2 to crude green body dewax at vacuum, 300 DEG C 1h；
5, it successively is sintered 0.5h at 550 DEG C of sintering 2h, 900 DEG C of sintering 1h, 1000 DEG C of 1h and 1600 DEG C of sintering, then existed
800 DEG C of annealing 2h, obtain cemented carbide material.
Comparative example 1
Cemented carbide material is prepared referring to the method for embodiment 1, the difference is that raw material are as follows: 94 parts by weight of WC powder, Co powder
6 parts by weight.
For the wearability for assessing alloy material, it is hard that room temperature is carried out to the cemented carbide material of embodiment 1-2 and comparative example 1
Degree, high temperature hardness and high temperature wear experiment, wherein room temperature hardness uses Rockwell apparatus, and high temperature hardness uses high-temperature vacuum hardness
Meter, high temperature wear use Si3N4Ceramic Balls are that opposite grinding pair carries out under the conditions of 650 DEG C, and abrasion linear velocity is 0.158m/s, mill
Damage load is 10N, wearing- in period 30min, tests scuff mark width.Test result is as shown in table 1:
Table 1
It can be seen from the above result that using Cu, Fe, Ti and TiB2The normal of hard alloy can be obviously improved by compounding with WC, Co
Warm hardness, high temperature hardness and wearability.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
Claims (5)
1. a kind of cemented carbide material, which is characterized in that including following raw material by weight percentage: WC powder 91.5~
92.5%, Co powder 5~6%, Cu powder 0.5~0.8%, Fe powder 0.5~1%, Ti powder 0.3~0.5%, TiB2Powder 0.3~
0.5%.
2. cemented carbide material according to claim 1, which is characterized in that the WC powder, Co powder, Cu powder, Fe powder, Ti powder
And TiB2The partial size of powder stands alone as 1~10 μm.
3. a kind of preparation method of cemented carbide material, which is characterized in that comprising steps of
S1, raw material of any of claims 1 or 2 is mixed, is added in ball mill, paraffin is added and carries out wet-milling, then vacuum is dry
It is dry, 100~200 meshes are crossed, uniformly mixed alloy powder is obtained；
S2, by alloy powder compression moulding made from step S1, obtain crude green body；
S3, the crude green body for obtaining step S2 carry out dewaxing treatment at vacuum, 300~350 DEG C, then successively 500~600
DEG C, 800~900 DEG C, be sintered at 1000~1200 DEG C and 1600 DEG C, sintering time is respectively 2~3h, 1~1.5h, 0.5~1h
And 0.5h, then in 800~900 DEG C of 1~2h of annealing.
4. the preparation method of cemented carbide material according to claim 3, which is characterized in that the wet-milling is with dehydrated alcohol
For medium, ratio of grinding media to material 3:1, liquid-solid ratio 400ml/kg, the time is 40~50h.
5. the preparation method of cemented carbide material according to claim 3, which is characterized in that the time of the dewaxing treatment
For 0.5~1h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811323579.XA CN109321800A (en) | 2018-11-08 | 2018-11-08 | A kind of cemented carbide material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811323579.XA CN109321800A (en) | 2018-11-08 | 2018-11-08 | A kind of cemented carbide material and preparation method thereof |
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| CN109321800A true CN109321800A (en) | 2019-02-12 |
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| CN201811323579.XA Withdrawn CN109321800A (en) | 2018-11-08 | 2018-11-08 | A kind of cemented carbide material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115338409A (en) * | 2022-09-02 | 2022-11-15 | 广东工业大学 | SiAlON-YG8 composite welding blade and preparation method and application thereof |
-
2018
- 2018-11-08 CN CN201811323579.XA patent/CN109321800A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115338409A (en) * | 2022-09-02 | 2022-11-15 | 广东工业大学 | SiAlON-YG8 composite welding blade and preparation method and application thereof |
| CN115338409B (en) * | 2022-09-02 | 2023-06-02 | 广东工业大学 | SiAlON-YG8 composite welding blade and preparation method and application thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190212 |
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| WW01 | Invention patent application withdrawn after publication |