CN101624500A - Oxidation resistant coating for hot stamping parts of ultrahigh strength sheet steel at high-temperature - Google Patents
Oxidation resistant coating for hot stamping parts of ultrahigh strength sheet steel at high-temperature Download PDFInfo
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- CN101624500A CN101624500A CN200910066624A CN200910066624A CN101624500A CN 101624500 A CN101624500 A CN 101624500A CN 200910066624 A CN200910066624 A CN 200910066624A CN 200910066624 A CN200910066624 A CN 200910066624A CN 101624500 A CN101624500 A CN 101624500A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
The invention relates to an oxidation resistant coating for hot stamping parts of ultrahigh strength sheet steel at high-temperature, comprising the following main components: boron modified organic silicon resin, polymethylsiloxane resin, tetraborate nitride powder, ionic liquid, aluminum powder, and polydimethylsiloxane. The coating has the advantages that the ionic liquid is used as organic solvent, therefore, the volatility is low and the thermal stability is high, in addition, solid lubricant is added, which can effectively prevent sheet materials from being oxidized, improves the frictional behaviour and the shaping property of the sheet materials; the thermal conduction of the coating is improved by adding metal particles, thus being beneficial to quenching. The coating can be directly applied to direct hot stamping forming process and indirect hot stamping forming process.
Description
Technical field:
The present invention relates to a kind of oxidation resistant coating for hot stamping parts of ultrahigh strength sheet steel at high-temperature, belong to technical field of coatings and technical field of hot stamping and forming.
Background technology:
Hot press-formed technology since its high-strength steel part of producing in the great advantages that improves aspect vehicle safety performance and the energy-saving and emission-reduction, be subjected to paying close attention to widely in automobile industry at present.Its main technique principle is that the boron alloy steel plate is heated to 880 ℃-950 ℃ in the process furnace that the gas shield atmosphere is arranged; make the sheet material complete austenitizing; transfer to it in hot stamping forming die rapidly by mechanical manipulator again; sheet material is shaped rapidly in mould; and simultaneously quick Cooling Quenching, the part that obtains having high-intensity martensitic stucture.
The problem of oxidation of high temperature sheet material is a difficult problem of the hot press-formed technology of puzzlement.Transferring to from process furnace the process of hot-forming die, the sheet material under the high temperature contacts with air, and the surface can form one deck oxide skin, and this oxide skin negative impact is very big.In order to address this problem, people have proposed the method at plate surface coating layer protective layer.Present widely used method is at the surface of sheet material plating layer of aluminum, zinc or aluminium-silicon, aluminium-spelter coating, utilizes the solid solution phase protection matrix metal that forms between coated material and the matrix not oxidized.This method is preventing to have obtained certain effect aspect the sheet metal oxidation, but, oxidation can take place being heated to after the high temperature to contact equally with air in these protective coatings, form the oxide film of one deck densification, though can effectively protect the sheet material matrix, but the associativity of this layer oxide film and matrix is also bad, must go out before the follow-up processing such as spraying carrying out; Coated material also can form intermetallic compound with matrix, and this compound hardness is very high, scratches die surface easily; Because the restriction of technology, this method can only be applied to the direct heat process for stamping and forming at present, the comparatively simple part of production shape.
Coating is a kind of cost-effective method that prevents the sheet material high temperature oxidation,, and be not subjected to the restriction of performing member complicated shape or size, technology is simple, and is easy to operate, good economy performance.At present, the domestic coating of developing several high temperature oxidation resistings, but because the characteristics of self all are not suitable for hot press-formed technology.A kind of high temperature resistant anti-wear lubricating coating is disclosed in Chinese patent (03137948), but its upper temperature limit does not reach hot press-formed desired 880-950 ℃, another one Chinese patent (200710023510) proposes a kind of coating of high temperature resistance iron and steel, working temperature can reach 800 ℃-1800 ℃, but this coating adopts Virahol as organic solvent, Fatty Alcohol(C12-C14 and C12-C18) sulfonic acid fat is as additive, and frictional behaviour is bad, can not satisfy the sheet material forming performance demands.
Summary of the invention:
The purpose of this invention is to provide a kind of coating that is applicable to hot press-formed sheet material, can prevent sheet material oxidation at high temperature, can reduce the frictional coefficient of sheet material again, improve forming property.
Purpose of the present invention realizes in the following way:
Coating of the present invention comprises following main component (pressing massfraction):
Solidifying agent 5-10%, binding agent 10-20%, ionic liquid 30-40%, aluminium powder 20-30%, solid lubricant 10-15%, dispersion agent 1-2%.
Described solidifying agent is the boron modified organic silicone resin.
Described binding agent is a methyl silicone resins.
Described ionic liquid is alkyl imidazole a tetrafluoro borate or 1-butyl-3-N-Methylimidazoleacetic salt.
Solid lubricant is a nitrogenize four boron powders, and powder particle size is less than 5 μ m.Select for use the reason of a nitrogenize four boron to be that itself and resin matrix matching are good, and high temperature resistant, and fusing point is up to 2350 ℃.
Described aluminum particle size is less than 3 μ m.
Described dispersion agent is a polydimethylsiloxane.
Coating method of the present invention is existing will the cleaning in the alkaline cleaner of hot press-formed boron alloy sheet material under 60 ℃ of temperature, wash then, dry, carrying out degreasing and rust removal handles, afterwards with spray gun with the paint spay-coating for preparing surface at sheet material, coating thickness is 5-7 μ m, solidify 4-6min down at 200 ℃, can use after the cooling.
Coating of the present invention uses ionic liquid as organic solvent, ionic liquid refers to be the fused salt of liquid state more when being lower than 100 degrees centigrade, volatility is low, the thermostability height, not flammable, advantage such as easy to use is the ideal substitute of traditional volatile solvent, it has avoided the problems such as serious environmental that use causes, health, safety and equipment corrosion of conventional organic solvents effectively, is genuine environmentally friendly green solvent.The interpolation of ionic liquid and solid lubricant makes sheet material frictional behaviour in forming process better.
Coating of the present invention can at high temperature effectively prevent the sheet material oxidation, and can improve the frictional behaviour of sheet material, and the thermal conductivity of coating is good, helps quenching, and satisfies hot press-formed requirement to coating.
Embodiment:
Embodiment 1:
Boron modified organic silicone resin 3g, methyl silicone resins 10g, a nitrogenize four boron 12g, aluminium powder 18g, the polymer 8g of 1,5 cyclooctadiene, alkyl imidazole a tetrafluoro borate 35g mixes above raw material stirring.
Embodiment 2:
Boron modified organic silicone resin 3g, methyl silicone resins 12g, a nitrogenize four boron 10g, aluminium powder 20g, the polymer 10g of 1,5 cyclooctadiene, 1-butyl-3-N-Methylimidazoleacetic salt.
Embodiment 3:
Boron modified organic silicone resin 2g, methyl silicone resins 6g, a nitrogenize four boron 8g, aluminium powder 10g, the polymer 5g of 1,5 cyclooctadiene, 1-butyl-3-N-Methylimidazoleacetic salt.
Claims (3)
1, a kind of oxidation resistant coating for hot stamping parts of ultrahigh strength sheet steel at high-temperature is characterized in that coating is made up of following components in weight percentage content: solidifying agent 5-10%, binding agent 10-20%, ionic liquid 30-40%, aluminium powder 20-30%, solid lubricant 10-15%, dispersion agent 1-2%.
2, according to the described oxidation resistant coating for hot stamping parts of ultrahigh strength sheet steel at high-temperature of claim 1, its ionic liquid is alkyl imidazole a tetrafluoro borate or 1-butyl-3-N-Methylimidazoleacetic salt.
3, according to the described oxidation resistant coating for hot stamping parts of ultrahigh strength sheet steel at high-temperature of claim 1, solid lubricant is a nitrogenize four boron powders, and powder particle size is less than 5 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100666242A CN101624500B (en) | 2009-03-12 | 2009-03-12 | Oxidation resistant coating for hot stamping parts of ultrahigh strength sheet steel at high-temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100666242A CN101624500B (en) | 2009-03-12 | 2009-03-12 | Oxidation resistant coating for hot stamping parts of ultrahigh strength sheet steel at high-temperature |
Publications (2)
| Publication Number | Publication Date |
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| CN101624500A true CN101624500A (en) | 2010-01-13 |
| CN101624500B CN101624500B (en) | 2011-09-07 |
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| CN2009100666242A Expired - Fee Related CN101624500B (en) | 2009-03-12 | 2009-03-12 | Oxidation resistant coating for hot stamping parts of ultrahigh strength sheet steel at high-temperature |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785060A (en) * | 2012-07-31 | 2012-11-21 | 重庆元创汽车整线集成股份有限公司 | Punch-forming process for high-strength plate |
| CN103992738A (en) * | 2014-04-23 | 2014-08-20 | 江苏欣安新材料技术有限公司 | Silicone coating capable of resisting low temperature of -40DEG C, and preparation method thereof |
| CN106433259A (en) * | 2016-10-11 | 2017-02-22 | 安徽卡塔门窗有限公司 | High-temperature resistant coating for doors and preparation method thereof |
| CN108855663A (en) * | 2018-08-03 | 2018-11-23 | 大连理工大学 | A kind of ionic liquid blending high-pressure carbon dioxide makees the paint spray system and method for mixed solvent |
| CN109021630A (en) * | 2018-08-13 | 2018-12-18 | 苏州普热斯勒先进成型技术有限公司 | A kind of dedicated anti-oxidation slip coating of drop stamping and preparation method and application |
| CN111073433A (en) * | 2020-01-02 | 2020-04-28 | 孙夏芬 | Exterior wall heat-insulating coating and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786878A (en) * | 2012-07-31 | 2012-11-21 | 重庆元创汽车整线集成股份有限公司 | Hot stamping protection paint for high-intensity plate |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2028682B (en) * | 1978-07-28 | 1982-08-18 | Res Inst For Special Inorganic | Method for producing corrosion-heat-and oxidation-resistant materials |
| WO2001038616A1 (en) * | 1999-11-24 | 2001-05-31 | Ube Industries, Ltd. | Organic silicon polymer, inorganic fiber with silicon carbide base, and method of manufacture thereof |
| CN1935921A (en) * | 2005-09-22 | 2007-03-28 | 陈历泽 | High-temperature-resistance oxidation coating for predry-free full-descaling steel billet |
| CN100355845C (en) * | 2005-12-16 | 2007-12-19 | 李巍 | High heat resistant corrosion-proof paint |
-
2009
- 2009-03-12 CN CN2009100666242A patent/CN101624500B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102785060A (en) * | 2012-07-31 | 2012-11-21 | 重庆元创汽车整线集成股份有限公司 | Punch-forming process for high-strength plate |
| CN103992738A (en) * | 2014-04-23 | 2014-08-20 | 江苏欣安新材料技术有限公司 | Silicone coating capable of resisting low temperature of -40DEG C, and preparation method thereof |
| CN106433259A (en) * | 2016-10-11 | 2017-02-22 | 安徽卡塔门窗有限公司 | High-temperature resistant coating for doors and preparation method thereof |
| CN108855663A (en) * | 2018-08-03 | 2018-11-23 | 大连理工大学 | A kind of ionic liquid blending high-pressure carbon dioxide makees the paint spray system and method for mixed solvent |
| CN109021630A (en) * | 2018-08-13 | 2018-12-18 | 苏州普热斯勒先进成型技术有限公司 | A kind of dedicated anti-oxidation slip coating of drop stamping and preparation method and application |
| CN111073433A (en) * | 2020-01-02 | 2020-04-28 | 孙夏芬 | Exterior wall heat-insulating coating and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101624500B (en) | 2011-09-07 |
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