CN105419408A - Hard alloy substrate sintering anti-adhesion coating - Google Patents
Hard alloy substrate sintering anti-adhesion coating Download PDFInfo
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- CN105419408A CN105419408A CN201510442066.0A CN201510442066A CN105419408A CN 105419408 A CN105419408 A CN 105419408A CN 201510442066 A CN201510442066 A CN 201510442066A CN 105419408 A CN105419408 A CN 105419408A
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Abstract
The present invention provides a hard alloy substrate sintering anti-adhesion coating, and relates to the technical field of coatings. Main components of the coating comprise Al2O3 powders, graphite powders, BN, tween, ethylcellulose, anhydrous alcohol and the like. According to the anti-adhesive coating provided by the present invention, the anti-adhesive coating is uniformly dispersed during coating, the surface of a sintering boat can be coated smoothly, the situation of sintering coat adhesion during high-temperature sintering of the hard alloy substrate product can be prevented, and sintering deformation of the hard alloy substrate product, ends in different sizes, decarburization and carburizing can also be prevented. Furthermore, the preparation process is simple, the method is easy to operate, and the production costs are low.
Description
Technical field
The present invention relates to Wimet substrate sintering tailor-(made) coating, in particular for Wimet substrate product sintering tailor-(made) coating.
Background technology
The sintering theory of Wimet substrate is the solution modeling process by producing liquid phase and crystal grain, promotes the densification of product.Due to the existence of liquid phase, make sintered products very easily burn the adhesion of boat plate with graphite, produce carburizing, distortion, bottom injustice.And because the existence of boat resistance is burnt in bottom, product bottom size is usually greater than tip size, produces " concentric reducer " phenomenon, produces considerable influence to Wimet substrate following process.
Number of patent application is " 03124547.1 ", discloses a kind of hard metal article that prevents and bond in high temperature sintering the separate paper of boat in the Chinese invention patent that name is called " prevent hard metal article from boning in high temperature sintering the method for boat and separate paper ".But adopt the method for separate paper, complex procedures, be shifted for preventing product and must place at interval, affect batch.In addition, exist sintering oven and pollute, cost is higher.
Number of patent application is " 200410045077.7 ", name is called in the Chinese invention patent of " a kind of coating for CEMENTED CARBIDE PRODUCTION " and discloses a kind of coating for CEMENTED CARBIDE PRODUCTION, its main ingredient comprises Graphite Powder 99, tween, polyvinyl alcohol, formaldehyde, aluminum oxide powder etc., and in this component, contained formaldehyde components has disadvantageous effect to the healthy of operator.Number of patent application is " 201210399861.2 ", name is called in the Chinese invention patent of " a kind of sintering cemented carbide release coating " and discloses a kind of sintering coating, its main ingredient comprises tween, aluminum oxide or zirconia powder, titanium carbide, Graphite Powder 99, methylcellulose gum, polyethylene glycol etc., although can prevent product from gluing boat etc., product " concentric reducer " phenomenon cannot be solved.Number of patent application is " 201110256855.7 ", name is called in the Chinese invention patent of " a kind of anti-sticking paint for cemented carbide vacuum sintering " and discloses a kind of sintering cemented carbide coating, its composition comprises titanium dioxide and ethanol, and coating is not strong to burning boat sticking power, is not easily uniformly dispersed during brushing.Number of patent application is " 200810143385.1 ", a kind of high-cobalt hart metal product sintering coating is disclosed in the Chinese invention patent that name is called " a kind of coating for high-cobalt hart metal product sintering ", its main component comprises high-purity carbon black, high purity titanium white powder, polyoxyethylene glycol, glycerine, propyl carbinol etc., in composition, content of graphite is higher, easily causes product carburizing or local carburization.
Summary of the invention
The present invention aims to provide a kind of Wimet substrate sintering release coating, Wimet substrate blank sintering can be adapted to, prevent Wimet substrate pressed compact from sticking together with burning boat plate, prevent product from producing de-, carburizing, prevent deformation of products, appearance " concentric reducer " phenomenon etc.
The object of the invention is to be achieved through the following technical solutions, according to a kind of Wimet substrate sintering release coating that the present invention proposes, it is composed of the following components: Al
2o
3powder 50-65%, Graphite Powder 99 5-10%, BN10-30%, tween 10-30%, ethyl cellulose 0.5-1%, all the other are dehydrated alcohol.
Object of the present invention can also be achieved through the following technical solutions, and according to the preparation method of a kind of Wimet substrate sintering release coating that the present invention proposes, it comprises following steps:
(1) each feed composition is added in ball grinding cylinder according to described ratio;
(2) in ball grinding cylinder, add mill to be situated between;
(3) ball grinding cylinder is placed on roller mill, ball milling;
(4) after ball milling, discharging is sieved.
Object of the present invention can also be realized by following technical measures.
The preparation method of aforesaid a kind of Wimet substrate sintering release coating, it is mill Jie's ball or roller that described mill is situated between, and material is stainless steel, Wimet or pottery.
The preparation method of aforesaid a kind of Wimet substrate sintering release coating, described Ball-milling Time is 6-10 hour, and roller mill rotating speed is 40-50r/min.
The preparation method of aforesaid a kind of Wimet substrate sintering release coating, after ball milling, discharging is sieved is 40 eye mesh screens.
The beneficial effect of a kind of Wimet substrate sintering of the present invention anti-adhesion method:
1. sintered products can not with the adhesion of burning boat plate;
2. can not there is decarburization and carburization phenomena in sintered products;
3. can not affect product to shrink, there is not the phenomenon such as distortion, " concentric reducer " in product.
4. production cost is low, economical and practical, workable.
Embodiment
For disclosing the present invention better, below in conjunction with specific embodiment, particular content of the present invention is described.
Embodiment 1
A kind of Wimet substrate sintering release coating is composed of the following components: Al2O3 powder 55%, Graphite Powder 99 5.4%, BN21%, tween 18%, ethyl cellulose 0.6%.
Put into ball grinding cylinder after being weighed up according to weight ratio by above-mentioned each raw material, add dehydrated alcohol, solid-to-liquid ratio is 1:3, then adds Wimet mill Jie ball, and ratio of grinding media to material is 3:1.Ball grinding cylinder is placed on roller mill ball milling 10 hours, roller mill rotating speed is 45r/min.After ball milling, slip is crossed 40 eye mesh screens, obtained release coating.
Embodiment 2
A kind of Wimet substrate sintering release coating, it is composed of the following components: Al2O3 powder 60%, Graphite Powder 99 5.7%, BN20%, tween 14%, ethyl cellulose 0.3%.
Put into ball grinding cylinder after being weighed up according to weight ratio by above-mentioned raw materials, add dehydrated alcohol, solid-to-liquid ratio is 1:3, then adds Wimet mill Jie ball, and ratio of grinding media to material is 3:1.Ball grinding cylinder is placed on roller mill ball milling 10 hours, roller mill rotating speed is 45r/min.After ball milling, slip is crossed 40 eye mesh screens, obtained release coating.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (5)
1. a Wimet substrate sintering release coating, it is characterized in that, it is composed of the following components: Al
2o
3powder 50-65%, Graphite Powder 99 5-10%, BN10-30%, tween 10-30%, ethyl cellulose 0.5-1%, all the other are dehydrated alcohol.
2. a preparation method for Wimet substrate sintering release coating according to claim 1, it is characterized in that, it comprises following steps:
(1) each feed composition is added in ball grinding cylinder according to described ratio;
(2) in ball grinding cylinder, add mill to be situated between;
(3) ball grinding cylinder is placed on roller mill, ball milling;
(4) after ball milling, discharging is sieved.
3. the preparation method of a kind of Wimet substrate sintering release coating according to claim 2, it is characterized in that, it is mill Jie's ball or roller that described mill is situated between, and material is stainless steel, Wimet or pottery.
4. the preparation method of a kind of Wimet substrate sintering release coating according to claim 2, it is characterized in that, described Ball-milling Time is 6-10 hour, and roller mill rotating speed is 40-50r/min.
5. the preparation method of a kind of Wimet substrate sintering release coating according to claim 2, it is characterized in that, after ball milling, discharging is sieved is 40 eye mesh screens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442066.0A CN105419408A (en) | 2015-07-24 | 2015-07-24 | Hard alloy substrate sintering anti-adhesion coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442066.0A CN105419408A (en) | 2015-07-24 | 2015-07-24 | Hard alloy substrate sintering anti-adhesion coating |
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| CN105419408A true CN105419408A (en) | 2016-03-23 |
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| CN201510442066.0A Pending CN105419408A (en) | 2015-07-24 | 2015-07-24 | Hard alloy substrate sintering anti-adhesion coating |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106566321A (en) * | 2016-10-31 | 2017-04-19 | 浙江德威硬质合金制造有限公司 | Multifunctional coating for high-temperature sintering of hard alloy and metal ceramic |
| CN106833035A (en) * | 2016-12-21 | 2017-06-13 | 潜江新锐硬质合金工具有限公司 | For the release coating of sintering cemented carbide |
| CN109570507A (en) * | 2018-12-06 | 2019-04-05 | 中钢集团洛阳耐火材料研究院有限公司 | Powder metallurgy hot isostatic pressing high-temperature mold lubricant |
| CN110605537A (en) * | 2019-09-17 | 2019-12-24 | 成都飞机工业（集团）有限责任公司 | Manufacturing method of titanium alloy bent conduit |
| CN110922796A (en) * | 2019-12-16 | 2020-03-27 | 浙江名鹰合金材料有限公司 | Wear-resistant coating for graphite boat plate and preparation process thereof |
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| CN1565778A (en) * | 2003-06-13 | 2005-01-19 | 闵小兵 | Method and anti-sticking paper for preventing hard metal article from sticking to container in high sintering process |
| CN1597885A (en) * | 2004-07-23 | 2005-03-23 | 袁美和 | Coating for producing hard alloy |
| CN101972848A (en) * | 2010-11-17 | 2011-02-16 | 河源富马硬质合金股份有限公司 | Coating special for vacuum sintering of cobalt-rich hard alloys and preparation and use methods thereof |
| CN102277019A (en) * | 2011-07-20 | 2011-12-14 | 中南大学 | High-temperature anti-adhesive coating for producing hard alloy and preparation method thereof |
| CN102876094A (en) * | 2012-10-19 | 2013-01-16 | 广西梧州港德硬质合金制造有限公司 | Hard alloy sintered antisticking coating |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1565778A (en) * | 2003-06-13 | 2005-01-19 | 闵小兵 | Method and anti-sticking paper for preventing hard metal article from sticking to container in high sintering process |
| CN1597885A (en) * | 2004-07-23 | 2005-03-23 | 袁美和 | Coating for producing hard alloy |
| CN101972848A (en) * | 2010-11-17 | 2011-02-16 | 河源富马硬质合金股份有限公司 | Coating special for vacuum sintering of cobalt-rich hard alloys and preparation and use methods thereof |
| CN102277019A (en) * | 2011-07-20 | 2011-12-14 | 中南大学 | High-temperature anti-adhesive coating for producing hard alloy and preparation method thereof |
| CN102876094A (en) * | 2012-10-19 | 2013-01-16 | 广西梧州港德硬质合金制造有限公司 | Hard alloy sintered antisticking coating |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106566321A (en) * | 2016-10-31 | 2017-04-19 | 浙江德威硬质合金制造有限公司 | Multifunctional coating for high-temperature sintering of hard alloy and metal ceramic |
| CN106833035A (en) * | 2016-12-21 | 2017-06-13 | 潜江新锐硬质合金工具有限公司 | For the release coating of sintering cemented carbide |
| CN106833035B (en) * | 2016-12-21 | 2019-07-05 | 潜江新锐硬质合金工具有限公司 | Release coating for sintering cemented carbide |
| CN109570507A (en) * | 2018-12-06 | 2019-04-05 | 中钢集团洛阳耐火材料研究院有限公司 | Powder metallurgy hot isostatic pressing high-temperature mold lubricant |
| CN109570507B (en) * | 2018-12-06 | 2020-07-07 | 中钢集团洛阳耐火材料研究院有限公司 | High-temperature release agent for powder metallurgy hot isostatic pressing |
| CN110605537A (en) * | 2019-09-17 | 2019-12-24 | 成都飞机工业（集团）有限责任公司 | Manufacturing method of titanium alloy bent conduit |
| CN110922796A (en) * | 2019-12-16 | 2020-03-27 | 浙江名鹰合金材料有限公司 | Wear-resistant coating for graphite boat plate and preparation process thereof |
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Application publication date: 20160323 |