CN101972848B - Special coating for vacuum sintering of high-cobalt hard alloy and preparation and use methods thereof - Google Patents
Special coating for vacuum sintering of high-cobalt hard alloy and preparation and use methods thereof Download PDFInfo
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- CN101972848B CN101972848B CN2010105469173A CN201010546917A CN101972848B CN 101972848 B CN101972848 B CN 101972848B CN 2010105469173 A CN2010105469173 A CN 2010105469173A CN 201010546917 A CN201010546917 A CN 201010546917A CN 101972848 B CN101972848 B CN 101972848B
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- sintering
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- boat
- special coating
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- 239000011248 coating agent Substances 0.000 title claims abstract description 38
- 238000000576 coating method Methods 0.000 title claims abstract description 38
- 238000005245 sintering Methods 0.000 title claims abstract description 37
- 229910017052 cobalt Inorganic materials 0.000 title claims abstract description 16
- 239000010941 cobalt Substances 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 title abstract description 7
- 239000000956 alloy Substances 0.000 title abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000006229 carbon black Substances 0.000 claims abstract description 10
- 238000000498 ball milling Methods 0.000 claims description 18
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229920001219 Polysorbate 40 Polymers 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000005299 abrasion Methods 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 8
- 235000010483 polyoxyethylene sorbitan monopalmitate Nutrition 0.000 claims description 8
- 239000000249 polyoxyethylene sorbitan monopalmitate Substances 0.000 claims description 8
- 229940101027 polysorbate 40 Drugs 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 235000010215 titanium dioxide Nutrition 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 230000001680 brushing effect Effects 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000002860 competitive effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 229910002804 graphite Inorganic materials 0.000 description 9
- 239000010439 graphite Substances 0.000 description 9
- 229910000531 Co alloy Inorganic materials 0.000 description 6
- 238000007605 air drying Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007634 remodeling Methods 0.000 description 2
- IQXJCCZJOIKIAD-UHFFFAOYSA-N 1-(2-methoxyethoxy)hexadecane Chemical compound CCCCCCCCCCCCCCCCOCCOC IQXJCCZJOIKIAD-UHFFFAOYSA-N 0.000 description 1
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 description 1
- 229950009789 cetomacrogol 1000 Drugs 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- TZBAVQKIEKDGFH-UHFFFAOYSA-N n-[2-(diethylamino)ethyl]-1-benzothiophene-2-carboxamide;hydrochloride Chemical compound [Cl-].C1=CC=C2SC(C(=O)NCC[NH+](CC)CC)=CC2=C1 TZBAVQKIEKDGFH-UHFFFAOYSA-N 0.000 description 1
- JLFNLZLINWHATN-UHFFFAOYSA-N pentaethylene glycol Chemical compound OCCOCCOCCOCCOCCO JLFNLZLINWHATN-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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Abstract
The invention discloses a special coating for vacuum sintering of high-cobalt hard alloy, and a preparation method and a use method thereof. The invention takes water and carbon black as main raw materials, and other common chemical materials are added, so the invention has wide source, low price, and no harm to environment and human body, and is beneficial to building resource-saving and environment-friendly society. In addition, the preparation method of the invention has the advantages of simple required equipment, short production process flow and convenient operation, thereby having low comprehensive cost and competitive advantage and being widely applied.
Description
Technical field
The present invention relates to a kind of sintering cemented carbide special coating, especially be exclusively used in the special coating of brushing high-cobalt hart metal vacuum-sintering boat, the invention still further relates to a kind of preparation method and method for using of above-mentioned coating.
Background technology
Not only very easily sticking boat during high-cobalt hart metal vacuum-sintering; And because of product mostly is elongated cylindrical shape, therefore when sintering very easily because of sintering furnace in or in the graphite boat the slight inhomogeneous product that makes of carbon atmosphere form tangible chemical composition and structure gradient in two ends up and down.Chemical composition in the sintered body and structure gradient often shrink inhomogeneous generation and significantly are out of shape when sintering, such as ubiquitous " concentric reducer " phenomenon, what have also can have a strong impact on the product inherent quality.The high cobalt alloy sintering glues boat, " concentric reducer " phenomenon is perplexing the sintered-carbide die industry always.For a long time; People prevent that through the method for on the vacuum-sintering graphite plate, spreading schmigel product from gluing boat; But serious " pitted skin " phenomenon will appear in the contact-making surface of product and plate like this; Therefore product often all will carry out grinding machine processing and just can dispatch from the factory, and has both increased production cost greatly, has influenced manufacturing schedule again.Moreover; Can solve the sticking boat of high cobalt alloy sintering though spread schmigel; But schmigel is because it has tangible decarburizing atmosphere; Make that the carbon atmosphere in the graphite boat is obviously inhomogeneous, therefore aggravated the contraction non-uniform phenomenon that high cobalt alloy just exists originally on the contrary, cause " concentric reducer " phenomenon of high cobalt alloy more outstanding.
Summary of the invention
The object of the present invention is to provide and a kind ofly can prevent effectively that high cobalt alloy from gluing boat; Can eliminate pitted skin again; Can also regulate simultaneously in the sintering furnace and the carbon atmosphere in the graphite boat; Make it trend evenly, shrink inhomogeneities, improve high cobalt alloy special coating and preparation thereof, the method for using of " concentric reducer " degree thereby can reduce product greatly.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: high-cobalt hart metal vacuum-sintering special coating, its component are base-material with distilled water, also comprise high abrasion carbon black, polyethylene glycol, polysorbate40, titanium white powder and n-butanol.
Described high-cobalt hart metal vacuum-sintering special coating; With distilled water is base-material, and in 100 parts of weight, the proportioning of other components is respectively: the high abrasion carbon black is 60～85 weight portions; Polysorbate40 is 30～60 weight portions; Polyethylene glycol is 10～40 weight portions, and titanium white powder is 10～40 weight portions, and n-butanol is 2～5 weight portions.
The preparation method of described high-cobalt hart metal vacuum-sintering special coating comprises the steps:
1), confected materials adds in the ball mill in proportion;
2), add the ball of constant weight, beginning ball milling in the ball mill;
3), the ball milling time to after sieve.
Described ball mill is the roller ball mill, and the volume of ball mill is 2 times of volume of water.
Described ball is a stainless steel ball, and ratio of grinding media to material is 1:1, and the diameter of ball is φ 5～φ 10.
The described ball milling time is 4～6 hours, and drum's speed of rotation is 33～36 commentaries on classics/min.
The described ball milling time also separates coating and ball with 20 mesh sieves to discharging immediately.
The method for using of described high-cobalt hart metal vacuum-sintering special coating comprises the steps:
1), carbide chip sintering boat inner surface is cleaned out with brush;
2), in boat about 30 ml coating, with the inner surface of the even brushing boat of hairbrush; It is big uneven that brushing note to guarantee that the surface can not have, and allows little microgroove and have (because of the characteristic of hairbrush and coating mobile bad, this brush boat mode is difficult to reach spraying effect, but influences less to the sintering contact-making surface);
3), dry 60 minutes at normal temperatures, repeat the 2nd step once;
4), the boat after brushing more than air dry 24h, can come into operation.
The present invention is a primary raw material with water and carbon black, has added other chemical materials commonly used, and raw material sources are extensive, and price is low, and environment and human body are not had harm basically, helps building resource-conserving and friendly environment society.In addition, preparation method's equipment needed thereby of the present invention is simple, and the technological process of production is short, and is easy to operate, so integrated cost is low, has competitive advantage, can be used widely.
The specific embodiment
Embodiment 1
It is base-material that the component of this coating is selected the distilled water of 1Kg for use; Base-material is added in the 2L ball mill; Add high abrasion carbon black 600g more successively, polysorbate40 is 300 g, polyethylene glycol 100 g, n-butanol 20 g; Titanium white powder 100 g add stainless steel ball 2120 g of φ 5～φ 10, at last with the ball mill good seal.The start ball milling, the rotating speed of ball mill is 33 commentaries on classics/min.Behind the ball milling 4h, discharging immediately, and sieve with 20 eye mesh screens immediately, can come into operation after stirring.Get the boat behind several sintering, boat inner surface is cleaned out about 30 ml coating in graphite boat with brush; Evenly brush with hairbrush, it is big uneven note to guarantee that the surface can not have, dry 60 minutes at normal temperatures; About again 30 ml coating are evenly brushed with hairbrush, guarantee smooth surface; After treating boat natural air drying 24h, can adorn YG15 carbide alloy cold heading die blank, advance the stove sintering by technological order.
Embodiment 2
It is base-material that the component of this coating is selected the distilled water of 1Kg for use; Base-material is added in the 2L ball mill; Add high abrasion carbon black 850g more successively, polysorbate40 is 600 g, PEG400 g, n-butanol 50 g; Titanium white powder 400 g add stainless steel ball 3300 g of φ 5～φ 10, at last with the ball mill good seal.The start ball milling, the rotating speed of ball mill is 36 commentaries on classics/min.Behind the ball milling 6h, discharging immediately, and sieve with 20 eye mesh screens immediately, can come into operation after stirring.Get the boat behind several sintering, boat inner surface is cleaned out about 30 ml coating in graphite boat with brush; Evenly brush with hairbrush, it is big uneven note to guarantee that the surface can not have, dry 60 minutes at normal temperatures; About again 30 ml coating are evenly brushed with hairbrush, guarantee smooth surface; After treating boat natural air drying 24h, can adorn YG20C carbide alloy cold heading die blank, advance the stove sintering by technological order.
Embodiment 3
It is base-material that the component of this coating is selected the distilled water of 10Kg for use; Base-material is added in the 20L ball mill; Add high abrasion carbon black 6000g more successively, polysorbate40 is 3000g, cetomacrogol 1000 g, n-butanol 200 g; Titanium white powder 1000 g add stainless steel ball 21200 g of φ 5～φ 10, at last with the ball mill good seal.The start ball milling, the rotating speed of ball mill is 33 commentaries on classics/min.Behind the ball milling 4h, discharging immediately, and sieve with 20 eye mesh screens immediately, can come into operation after stirring.Get the boat behind several sintering, boat inner surface is cleaned out about 30 ml coating in graphite boat with brush; Evenly brush with hairbrush, it is big uneven note to guarantee that the surface can not have, dry 60 minutes at normal temperatures; About again 30 ml coating are evenly brushed with hairbrush, guarantee smooth surface; After treating boat natural air drying 24h, can adorn YG15 carbide alloy cold heading die blank, advance the stove sintering by technological order.
Embodiment 4
It is base-material that the component of this coating is selected the distilled water of 10Kg for use; Base-material is added in the 20L ball mill; Add high abrasion carbon black 8500g more successively, polysorbate40 is 6000 g, Macrogol 4000 g, n-butanol 500 g; Titanium white powder 4000g adds stainless steel ball 33000 g of φ 5～φ 10, at last with the ball mill good seal.The start ball milling, the rotating speed of ball mill is 36 commentaries on classics/min.Behind the ball milling 6h, discharging immediately, and sieve with 20 eye mesh screens immediately, can come into operation after stirring.Get the boat behind several sintering, boat inner surface is cleaned out about 30 ml coating in graphite boat with brush; Evenly brush with hairbrush, it is big uneven note to guarantee that the surface can not have, dry 60 minutes at normal temperatures; About again 30 ml coating are evenly brushed with hairbrush, guarantee smooth surface; After treating boat natural air drying 24h, can adorn YG20C carbide alloy cold heading die blank, advance the stove sintering by technological order.
Embodiment 5
It is base-material that the component of this coating is selected the distilled water of 1Kg for use; Base-material is added in the 2L ball mill; Add high abrasion carbon black 800g more successively, polysorbate40 is 500 g, polyethylene glycol 250 g, n-butanol 50 g; Titanium white powder 300 g add the stainless steel ball 2900g of φ 5～φ 10, at last with the ball mill good seal.The start ball milling, the rotating speed of ball mill is 35 commentaries on classics/min.Behind the ball milling 5h, discharging immediately, and sieve with 20 eye mesh screens immediately, can come into operation after stirring.Get the boat behind several sintering, boat inner surface is cleaned out about 30 ml coating in graphite boat with brush; Evenly brush with hairbrush, it is big uneven note to guarantee that the surface can not have, dry 60 minutes at normal temperatures; About again 30 ml coating are evenly brushed with hairbrush, guarantee smooth surface; After treating boat natural air drying 24h, can adorn YG20C carbide alloy cold heading die blank, advance the stove sintering by technological order.
In a word; The above-mentioned preferred implementation though the present invention has given an example should be explained, though those skilled in the art can carry out various variations and remodeling; Only if such variation and remodeling have departed from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (7)
1. a high-cobalt hart metal vacuum-sintering special coating is characterized in that, is base-material with distilled water; In 100 parts of weight; The proportioning of other components is respectively: the high abrasion carbon black is 60～85 weight portions, and polysorbate40 is 30～60 weight portions, and polyethylene glycol is 10～40 weight portions; Titanium white powder is 10～40 weight portions, and n-butanol is 2～5 weight portions.
2. the preparation method of a high-cobalt hart metal vacuum-sintering special coating as claimed in claim 1 is characterized in that, comprises the steps:
1), confected materials adds in the ball mill in proportion;
2), add the ball of constant weight, beginning ball milling in the ball mill;
3), the ball milling time to after sieve.
3. according to the preparation method of the described high-cobalt hart metal vacuum-sintering of claim 2 special coating, it is characterized in that: described ball mill is the roller ball mill, and the volume of ball mill is 2 times of volume of water.
4. according to the preparation method of the described high-cobalt hart metal vacuum-sintering of claim 2 special coating, it is characterized in that: described ball is a stainless steel ball, and ratio of grinding media to material is 1:1, and the diameter of ball is φ 5～φ 10.
5. according to the preparation method of the described high-cobalt hart metal vacuum-sintering of claim 2 special coating, it is characterized in that: the described ball milling time is 4～6 hours, and drum's speed of rotation is 33～36 commentaries on classics/min.
6. according to the preparation method of the described high-cobalt hart metal vacuum-sintering of claim 2 special coating, it is characterized in that: the described ball milling time also separates coating and ball with 20 mesh sieves to discharging immediately.
7. the method for using of a high-cobalt hart metal vacuum-sintering special coating as claimed in claim 1 is characterized in that, comprises the steps:
1), carbide chip sintering boat inner surface is cleaned out with brush;
2), in boat about 30 ml coating, with the inner surface of the even brushing boat of hairbrush;
3), dry 60 minutes at normal temperatures, repeat the 2nd step once;
4), the boat after brushing more than air dry 24h, can come into operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105469173A CN101972848B (en) | 2010-11-17 | 2010-11-17 | Special coating for vacuum sintering of high-cobalt hard alloy and preparation and use methods thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105469173A CN101972848B (en) | 2010-11-17 | 2010-11-17 | Special coating for vacuum sintering of high-cobalt hard alloy and preparation and use methods thereof |
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| Publication Number | Publication Date |
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| CN101972848A CN101972848A (en) | 2011-02-16 |
| CN101972848B true CN101972848B (en) | 2012-05-16 |
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| CN2010105469173A Expired - Fee Related CN101972848B (en) | 2010-11-17 | 2010-11-17 | Special coating for vacuum sintering of high-cobalt hard alloy and preparation and use methods thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744404B (en) * | 2012-07-26 | 2013-10-23 | 江西稀有稀土金属钨业集团有限公司 | Surface bonding-proof method for hard alloy parison sintering boat |
| CN105419408A (en) * | 2015-07-24 | 2016-03-23 | 洛阳新巨能高热技术有限公司 | Hard alloy substrate sintering anti-adhesion coating |
| CN105238240A (en) * | 2015-11-13 | 2016-01-13 | 浙江中质合金材料有限公司 | Antisticking coating for high-temperature sintering of hard alloy and preparation method of antisticking coating |
| CN108677136A (en) * | 2018-05-28 | 2018-10-19 | 株洲硬质合金集团有限公司 | A method of eliminating hard alloy decarburization defect |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55154560A (en) * | 1979-05-18 | 1980-12-02 | Sumitomo Electric Ind Ltd | Covered sintered hard alloy part |
| CN1597885A (en) * | 2004-07-23 | 2005-03-23 | 袁美和 | Coating for producing hard alloy |
| CN100535068C (en) * | 2007-08-10 | 2009-09-02 | 株洲精工硬质合金有限公司 | Hard alloy vacuum anti-sticking coating |
| CN101386055B (en) * | 2008-10-21 | 2010-08-11 | 株洲力洲硬质合金有限公司 | Coating for sintering the high-cobalt hard metal product |
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| CN101972848A (en) | 2011-02-16 |
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