CN101972848A - Coating special for vacuum sintering of cobalt-rich hard alloys and preparation and use methods thereof - Google Patents
Coating special for vacuum sintering of cobalt-rich hard alloys and preparation and use methods thereof Download PDFInfo
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- CN101972848A CN101972848A CN201010546917.3A CN201010546917A CN101972848A CN 101972848 A CN101972848 A CN 101972848A CN 201010546917 A CN201010546917 A CN 201010546917A CN 101972848 A CN101972848 A CN 101972848A
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Abstract
The invention discloses a coating special for vacuum sintering of cobalt-rich hard alloys and preparation and use methods thereof. The coating takes distilled water as the base material and comprises high wear resistant black, polyethylene glycol, Tween 40, titanium dioxide and n-butyl alcohol. Water and black are used as the main raw materials and other common chemical materials are added, therefore, the coating has wide sources and low price, is basically harmless to the environment and the human bodies and conduces to building a resource-saving and environment-friendly society. Besides, the preparation method is simple in required equipment, short in production process flow and convenient to operate, therefore, the invention has low comprehensive cost, has competitive advantage and can be 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 using method 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 by the method for spreading schmigel on the vacuum-sintering graphite plate 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, both increase production cost greatly, 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 aggravate the contraction non-uniform phenomenon that high cobalt alloy just exists originally on the contrary, caused " 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 thereby can reduce product greatly, improve the high cobalt alloy special coating of " concentric reducer " degree and preparation thereof, using method.
For solving the problems of the technologies described above, the technical solution used in the present invention 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 dioxide and n-butanol.
Described high-cobalt hart metal vacuum-sintering special coating, with distilled water is base-material, 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 dioxide 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 using method 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 substantially, 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 dioxide 100 g, stainless steel ball 2120 g that add φ 5～φ 10 at last are 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, with brush boat inner surface is cleaned out, about 30 ml coating are evenly brushed with hairbrush in graphite boat, it is big uneven note to guarantee that the surface can not have, dry 60 minutes at normal temperatures, about again 30 ml coating were 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 dioxide 400 g, stainless steel ball 3300 g that add φ 5～φ 10 at last are 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, with brush boat inner surface is cleaned out, about 30 ml coating are evenly brushed with hairbrush in graphite boat, it is big uneven note to guarantee that the surface can not have, dry 60 minutes at normal temperatures, about again 30 ml coating were 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 dioxide 1000 g, stainless steel ball 21200 g that add φ 5～φ 10 at last are 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, with brush boat inner surface is cleaned out, about 30 ml coating are evenly brushed with hairbrush in graphite boat, it is big uneven note to guarantee that the surface can not have, dry 60 minutes at normal temperatures, about again 30 ml coating were 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 dioxide 4000g, stainless steel ball 33000 g that add φ 5～φ 10 at last are 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, with brush boat inner surface is cleaned out, about 30 ml coating are evenly brushed with hairbrush in graphite boat, it is big uneven note to guarantee that the surface can not have, dry 60 minutes at normal temperatures, about again 30 ml coating were 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 dioxide 300 g, the stainless steel ball 2900g that adds φ 5～φ 10 at last is 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, with brush boat inner surface is cleaned out, about 30 ml coating are evenly brushed with hairbrush in graphite boat, it is big uneven note to guarantee that the surface can not have, dry 60 minutes at normal temperatures, about again 30 ml coating were 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; though the present invention has exemplified above-mentioned preferred implementation, should illustrate, though those skilled in the art can carry out various variations and remodeling; unless 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 (8)
1. high-cobalt hart metal vacuum-sintering special coating, its component is base-material with distilled water, also comprises high abrasion carbon black, polyethylene glycol, polysorbate40, titanium dioxide and n-butanol.
2. according to the described high-cobalt hart metal vacuum-sintering of claim 1 special coating, it is characterized in that, with distilled water is base-material, 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 dioxide is 10～40 weight portions, and n-butanol is 2～5 weight portions.
3. the preparation method of a high-cobalt hart metal vacuum-sintering special coating as claimed in claim 1 or 2 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.
4. according to the preparation method of the described high-cobalt hart metal vacuum-sintering of claim 3 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.
5. according to the preparation method of the described high-cobalt hart metal vacuum-sintering of claim 3 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.
6. according to the preparation method of the described high-cobalt hart metal vacuum-sintering of claim 3 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.
7. according to the preparation method of the described high-cobalt hart metal vacuum-sintering of claim 3 special coating, it is characterized in that: the described ball milling time also separates coating and ball with 20 mesh sieves to discharging immediately.
8. the using method of a high-cobalt hart metal vacuum-sintering special coating as claimed in claim 1 or 2 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 | Coating special for vacuum sintering of cobalt-rich hard alloys and preparation and use methods thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105469173A CN101972848B (en) | 2010-11-17 | 2010-11-17 | Coating special for vacuum sintering of cobalt-rich hard alloys and preparation and use methods thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101972848A true CN101972848A (en) | 2011-02-16 |
| CN101972848B CN101972848B (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105469173A Expired - Fee Related CN101972848B (en) | 2010-11-17 | 2010-11-17 | Coating special for vacuum sintering of cobalt-rich hard alloys and preparation and use methods thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744404A (en) * | 2012-07-26 | 2012-10-24 | 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 |
| 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 |
| 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 |
| 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 |
Citations (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 |
| CN101104773A (en) * | 2007-08-10 | 2008-01-16 | 株洲精工硬质合金有限公司 | Hard alloy vacuum anti-sticking coating |
| CN101386055A (en) * | 2008-10-21 | 2009-03-18 | 株洲力洲硬质合金有限公司 | Coating for sintering the high-cobalt hart metal product |
-
2010
- 2010-11-17 CN CN2010105469173A patent/CN101972848B/en not_active Expired - Fee Related
Patent Citations (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 |
| CN101104773A (en) * | 2007-08-10 | 2008-01-16 | 株洲精工硬质合金有限公司 | Hard alloy vacuum anti-sticking coating |
| CN101386055A (en) * | 2008-10-21 | 2009-03-18 | 株洲力洲硬质合金有限公司 | Coating for sintering the high-cobalt hart metal product |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744404A (en) * | 2012-07-26 | 2012-10-24 | 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 |
| 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 |
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| CN101972848B (en) | 2012-05-16 |
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Granted publication date: 20120516 Termination date: 20211117 |