CN106498258A - With in Fisher particle size or fine grained WC powder manufacture coarse-grain hard alloy with nonuniform structure - Google Patents
With in Fisher particle size or fine grained WC powder manufacture coarse-grain hard alloy with nonuniform structure Download PDFInfo
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- CN106498258A CN106498258A CN201610987126.1A CN201610987126A CN106498258A CN 106498258 A CN106498258 A CN 106498258A CN 201610987126 A CN201610987126 A CN 201610987126A CN 106498258 A CN106498258 A CN 106498258A
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- powder
- particle size
- fisher particle
- microns
- fine grained
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/052—Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
-
- 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
Abstract
The invention discloses in a kind of use Fisher particle size or fine grained WC powder manufacture coarse-grain hard alloy with nonuniform structure, it is characterised in that：Material of main part includes the WC powder 65 85% that percentage by weight is 13 microns of Fisher particle size, and Fisher particle size is 12 microns of WC powder 15% 25%, 1.5 microns of cobalt powder 9 11%.The present invention is additionally arranged the WC powder that Fisher particle size is 12 microns, stability in the large is more conventional process more preferable, the broader super non-homogeneous crystallization of WC grain particle size distribution can be obtained, there is the hard alloy of this characteristics of organizational structure, in the use occasion of some anti impulsion loads for needing, service life is significantly improved, and stability in use is good and the suitability is higher.
Description
Technical field
The invention belongs to hard alloy technical field, and in particular in one kind Fisher particle size or the manufacture of fine grained WC powder is thick
Brilliant hard alloy with nonuniform structure.
Background technology
By hard phase WC grain, equably disperse is constituted in metallic cobalt burl phase WC-Co hard alloy.Previously, greatly
Family all makes every effort to do the even-grained hard alloy of WC grain.The last century end is it has been found that the moderately uneven alloy of WC grain
Also some advantages for having which to apply.Then, the research of heterogeneous texture WC-Co hard alloy is also heated up.So,
WC-Co hard alloy also just presses the uniformity coefficient of hard phase WC grain, has been divided into " uniform " and " non-homogeneous " two types.
At present, the practice of each manufacturing enterprise's manufacture " non-homogeneous " structure WC-Co hard alloy is exactly：With more coarse grained WC
Powder based on powder.For seeking heterogeneous texture, a certain proportion of fine grained WC powder of appropriate mixture.The mixing that such raw material is made into
Material, through wet grinding-molding-sintering, obtains so-called hard alloy with nonuniform structure.
But, with powder based on coarse-grained WC powder, fine grained end is equipped with right amount, obtained heterogeneous texture is closed
Gold, non-homogenized degree often run counter to desire than relatively low, crystal grain non-homogenized degree raising to be asked, because being to make alloy microcosmic
Structure non-homogenized and the fine grained WC powder that adds, under sintering high temperature, on crystallization of the dissolution and precipitation to the thick WC grain around which.Such as
It is, the method with thin WC powder ratio is increased to be only capable of making the average grain size of WC-Co hard alloy become big, and can not be lifted
" unevenness " of WC grain.In fact, this trouble already becomes the bottle of enterprise development " non-homogeneous " structure hard alloy
Neck problem, becomes the technical barrier that those skilled in the art of the present technique's needs are solved so as to solve this technical problem.
Content of the invention
It is an object of the invention to provide in a kind of good use Fisher particle size of stability in use or fine grained WC powder manufacture coarse-grain
Hard alloy with nonuniform structure.
Realize the object of the invention technical scheme be in a kind of use Fisher particle size or fine grained WC powder manufacture coarse-grain non-
Even structure hard alloy, material of main part include the WC powder 65-85% that percentage by weight is Fisher particle size 1-3 micron, Fisher particle size
For 12 microns of WC powder 15%-25%, 1.5 microns of cobalt powder 9-11%.WC powder from granule (12 microns) is burnt as product
Crystallization backrest effect, to form the distinctive micro structure of alloy.
Further preferably, the percentage by weight of material of main part is the WC powder 70% of the Fisher particle size 1-3 micron, Fei Shi grains
Spend the WC powder 20% for 12 microns, 1.5 microns of cobalt powder 10%.
Or be preferably, the percentage by weight of material of main part is the WC powder 66.75% of the Fisher particle size 1-3 micron, takes
Family name's granularity is 12 microns of WC powder 22.25%, 1.5 microns of cobalt powder 11%.
Further, material of main part is formed through wet grinding, molding and sintering.
Further, the wet grinding time is 27 hours, and sintering temperature is for 1450 degree and sintering time is 90 minutes.
The present invention has positive effect：The present invention is additionally arranged the WC powder that Fisher particle size is 12 microns, stability in the large compared with
Conventional machining more preferable, the broader super non-homogeneous crystallization of WC grain particle size distribution can be obtained, with this organizational structure
The hard alloy of feature, in the use occasion of some anti impulsion loads for needing, service life is significantly improved, and stability in use is good
And the suitability is higher.
Specific embodiment
In a kind of use Fisher particle size or fine grained WC powder manufactures the hard alloy with nonuniform structure of coarse-grain, material of main part includes
WC powder 65-85% of the percentage by weight for Fisher particle size 1-3 micron, Fisher particle size is 12 microns of WC powder 15%-25%, 1.5
The cobalt powder 9-11% of micron.WC powder from granule (12 microns) has sintered crystallization backrest effect as product, to form alloy
Distinctive micro structure.
Further preferably, the percentage by weight of material of main part is the WC powder 70% of the Fisher particle size 1-3 micron, Fei Shi grains
Spend the WC powder 20% for 12 microns, 1.5 microns of cobalt powder 10%.
Or be preferably, the percentage by weight of material of main part is the WC powder 66.75% of the Fisher particle size 1-3 micron, takes
Family name's granularity is 12 microns of WC powder 22.25%, 1.5 microns of cobalt powder 11%.
Further, material of main part is formed through wet grinding, molding and sintering.
Further, the wet grinding time is 27 hours, and sintering temperature is for 1450 degree and sintering time is 90 minutes.
The hard strong of the WC-Co hard alloy of machine-shaping of the present invention, substantially by this wide scope of 0.5-20 microns
A kind of super heterogeneous texture that WC grain is constituted.Wherein WC grain hardness group is：
1.4 microns of ＜：～20%
1.4-4.2 micron：≤ 60%
＞ 4.2-20 micron～20%
Different from existing manufacture heterogeneous texture alloying technology, the present invention is to adopt Fisher particle size (F.S.S.S) micro- for 1-3
The middle granule and fine grained WC powder of rice.Actually adopting≤2 microns of the WC powder effect can be better.
In order to the coarse grain required for heterogeneous texture is produced in sintering process, add during dispensing a small amount of one conduct rush
Enter the thick special WC powder of crystallization length.This WC powder is used as liquid-phase sintering fruit, WC grain " crystallization backrest ".But, there is no this
More coarse grained WC powder can also be used to substitute use during one condition.This WC powder consumption is 15-25%, usually 20%.
The present invention is additionally arranged the WC powder that Fisher particle size is 12 microns, more conventional more preferable, the energy for processing of stability in the large
The broader super non-homogeneous crystallization of WC grain particle size distribution is accessed, the hard alloy with this characteristics of organizational structure, at some
The use occasion of the anti impulsion load of needs, service life are significantly improved, and stability in use is good and the suitability is higher.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no need to be exhaustive to all of embodiment.And these
Belong to the present invention connotation extended obvious change or variation still fall within protection scope of the present invention.
Claims (5)
1. in a kind of use Fisher particle size or fine grained WC powder manufacture coarse-grain hard alloy with nonuniform structure, it is characterised in that：Main
Body material includes the WC powder 65-85% that percentage by weight is Fisher particle size 1-3 micron, and Fisher particle size is 12 microns of WC powder
15%-25%, 1.5 microns of cobalt powder 9-11%.
2. in use Fisher particle size according to claim 1 or fine grained WC powder manufacture coarse-grain heterogeneous texture hard close
Gold, it is characterised in that：The percentage by weight of material of main part is the WC powder 70% of the Fisher particle size 1-3 micron, and Fisher particle size is
12 microns of WC powder 20%, 1.5 microns of cobalt powder 10%.
3. in use Fisher particle size according to claim 1 or fine grained WC powder manufacture coarse-grain heterogeneous texture hard close
Gold, it is characterised in that：The percentage by weight of material of main part is the WC powder 66.75% of the Fisher particle size 1-3 micron, Fisher particle size
For 12 microns of WC powder 22.25%, 1.5 microns of cobalt powder 11%.
4. in the use Fisher particle size according to any one in claim 1 to claim 3 or the manufacture of fine grained WC powder is thick
Brilliant hard alloy with nonuniform structure, it is characterised in that：Material of main part is formed through wet grinding, molding and sintering.
5. in use Fisher particle size according to claim 4 or fine grained WC powder manufacture coarse-grain heterogeneous texture hard close
Gold, it is characterised in that：The wet grinding time is 27 hours, and sintering temperature is for 1450 degree and sintering time is 90 minutes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610987126.1A CN106498258B (en) | 2016-10-31 | 2016-10-31 | With in Fisher particle size or fine grained WC powder manufactures the hard alloy with nonuniform structure of coarse-grain |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610987126.1A CN106498258B (en) | 2016-10-31 | 2016-10-31 | With in Fisher particle size or fine grained WC powder manufactures the hard alloy with nonuniform structure of coarse-grain |
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| CN106498258A true CN106498258A (en) | 2017-03-15 |
| CN106498258B CN106498258B (en) | 2018-12-04 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048723A (en) * | 2017-11-17 | 2018-05-18 | 北京有色金属研究总院 | A kind of wide size distribution hard alloy and preparation method thereof |
| CN109838626A (en) * | 2017-11-28 | 2019-06-04 | 丹阳市延陵镇优越合金厂 | A kind of pipe fitting preparation method |
| CN110923492A (en) * | 2019-12-27 | 2020-03-27 | 重庆市科学技术研究院 | Preparation method of hard alloy and composite wear-resistant hammer for sand making |
| CN111187960A (en) * | 2019-12-31 | 2020-05-22 | 株洲硬质合金集团有限公司 | Double-crystal hard alloy and preparation method thereof |
| CN111349836A (en) * | 2018-12-24 | 2020-06-30 | 株洲硬质合金集团有限公司 | Non-uniform structure hard alloy roll collar and preparation method thereof |
| CN111455252A (en) * | 2020-05-12 | 2020-07-28 | 江西江钨硬质合金有限公司 | Non-uniform hard alloy prepared by adopting close-packed batching mode and preparation method thereof |
| CN112143953A (en) * | 2020-09-25 | 2020-12-29 | 江西江钨硬质合金有限公司 | High-performance non-uniform structure hard alloy and preparation method thereof |
| CN113215465A (en) * | 2021-05-21 | 2021-08-06 | 株洲美特优硬质合金有限公司 | Non-uniform material for hot forging |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048723A (en) * | 2017-11-17 | 2018-05-18 | 北京有色金属研究总院 | A kind of wide size distribution hard alloy and preparation method thereof |
| CN109838626A (en) * | 2017-11-28 | 2019-06-04 | 丹阳市延陵镇优越合金厂 | A kind of pipe fitting preparation method |
| CN111349836A (en) * | 2018-12-24 | 2020-06-30 | 株洲硬质合金集团有限公司 | Non-uniform structure hard alloy roll collar and preparation method thereof |
| CN111349836B (en) * | 2018-12-24 | 2022-09-09 | 株洲硬质合金集团有限公司 | Non-uniform structure hard alloy roll collar and preparation method thereof |
| CN110923492A (en) * | 2019-12-27 | 2020-03-27 | 重庆市科学技术研究院 | Preparation method of hard alloy and composite wear-resistant hammer for sand making |
| CN110923492B (en) * | 2019-12-27 | 2021-03-23 | 重庆市科学技术研究院 | Preparation method of hard alloy and composite wear-resistant hammer for sand making |
| CN111187960A (en) * | 2019-12-31 | 2020-05-22 | 株洲硬质合金集团有限公司 | Double-crystal hard alloy and preparation method thereof |
| CN111455252A (en) * | 2020-05-12 | 2020-07-28 | 江西江钨硬质合金有限公司 | Non-uniform hard alloy prepared by adopting close-packed batching mode and preparation method thereof |
| CN112143953A (en) * | 2020-09-25 | 2020-12-29 | 江西江钨硬质合金有限公司 | High-performance non-uniform structure hard alloy and preparation method thereof |
| CN113215465A (en) * | 2021-05-21 | 2021-08-06 | 株洲美特优硬质合金有限公司 | Non-uniform material for hot forging |
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| CN106498258B (en) | 2018-12-04 |
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