CN1450131A - Heating protection coating for desalling of alloy steel - Google Patents
Heating protection coating for desalling of alloy steel Download PDFInfo
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- CN1450131A CN1450131A CN 03118989 CN03118989A CN1450131A CN 1450131 A CN1450131 A CN 1450131A CN 03118989 CN03118989 CN 03118989 CN 03118989 A CN03118989 A CN 03118989A CN 1450131 A CN1450131 A CN 1450131A
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- coating
- steel
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- alloy steel
- protective coating
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Abstract
The present invention provides a water inorganic high-temp.-resisting coating material of heating protective coating system for descaling alloy steel. It is characterized by that it can be formed into microcrystal glass layer at high-temp. so as to protect steel material at high temp., descale and raise product surface quality, so that it can raise production efficiency and can reduce production cost.
Description
Technical field
The present invention relates to heated protective coating, particularly steel alloy de-scaling heated protective coating.
Background technology
The hot rolling of large-sized steel product is forged and thermal treatment is the modern metallurgical and requisite important process of machinery manufacturing industry machining large goods.In these technological processs, serious high temperature oxidation can take place when steel were subjected to heat, generate scale oxide at steel surface, this not only causes the loss of steel, if do not remove also and can have a strong impact on the following process surface quality of products,, also can increase the stock removal of rolling back sheet material if oxidation is dark excessively, reduce the quality grade of product, serious even can cause and scrap.For stoping the high temperature oxidation of steel, and still constantly researching and developing steel high temperature protection coating both at home and abroad, still; so far; though all these class coating of having researched and developed have played high temperature protection effect to some extent, still, all do not relate to the problem of de-scaling.
Goal of the invention
The objective of the invention is to propose a kind ofly both steel were played the high temperature protection effect, reduce or stop its high temperature oxidation, can play the effect of scaling again simultaneously, and improve the surface quality of working steel products.
Embodiment
For reaching the above-mentioned purpose that the present invention proposes, in the coating that the present invention proposes with SiO
2, Al
2O
3As base-material, they at high temperature form the glass-ceramic structural matrix, add LiO
2Or K
2O and B
2O
3Promote coating can be under lower temperature condition densified sintering product; add MgO; rare earth oxide; to reduce under the hot conditions ferric oxide to the erosion action of coating; and reduce the viscosity of nickeliferous scale oxide; and the resistance to elevated temperatures of raising coating; add high-carbon chromium iron; to improve the resistance to high temperature oxidation decarbonization performance of steel billet; and reduce the nickel contain in the nickel steel velocity of diffusion to matrix, particularly reduce the sticking power of oxidation firecoat, and promote removing of squama matrix; thereby what reach the present invention's proposition carries out high temperature protection to steel, removes the purpose of deoxidation squama and raising product surface quality.
According to the above-mentioned concrete composition (weight %) that has obtained coating of the present invention be: SiO
235～50% (for example 41.5%), Al
2O
35～15% (for example 12.5%), high-carbon chromium iron (contain Cr 50～70%, C 5～8%, and surplus is Fe) 10～26% (for example 20.0%), MgO 6～12% (for example 8.0%), rare earth oxide (La
2O
3, Ce
2O
3Deng), 5～10% (for example 8.0%), B
2O
34～8%, (for example 5.0%) (Li
2O or K
2O) 3.5～8.5% (for example 5.0%).
Powder coating that above composition is made and water-base resin are (for example, acrylic resin) aqueous solution becomes the liquid coating with required work viscosity, can adopt the method that is suitable for associated workpiece to be coated on workpiece surface, and reach certain coating thickness (0.4～1.0mm).Coating of the present invention does not have any particular requirement to applying environment, can apply under arbitrary temp below 400 ℃ and relative humidity condition.Coating of the present invention does not have particular requirement to the composition of the water-base resin aqueous solution, can be coated on workpiece surface as long as mix, seasoning at ambient temperature after the coating.Work viscosity to coating does not have particular requirement yet, as long as can be coated to required coating thickness.
The present invention has following features:
1. after the present invention adopts the mediation of water-base resin liquid to be coated on plate slab, in the roller-way course of conveying, can hold Be hit and do not peel off.
2. 800～1300 ℃ of temperature ranges, coating of the present invention has the effect of tangible prevention steel oxidation and decarburization, and reduces the formation of scale oxide.
3. can reduce the sticking power of steel billet surperficial formed ferric oxide phosphorus and steel matrix in heat-processed, help ferric oxide phosphorus from the removing of steel surface, and improved product surface quality.
4. to the continuous casting steel billet of casting oxide skin is arranged, even do not carry out sandblast or polishing pre-treatment, the effect of also unlikely influence coating of the present invention.
5. for the higher steel plate of nickel content, prior art adopts the heating rolling technology of steel slab surface sandblast coating sheet iron, complex procedures, and workload is big, and cost is 10 times of coating protection of the present invention.
6. adopt the reconditioning quality after coating of the present invention can obviously reduce plate rolling, increase substantially productivity and product percent of pass.
For example, the multiple structural alloy steel continuous casting steel billet of nickel content 0.7～3.1%, plate thickness 200～250mm, and apply coating of the present invention, coat-thickness 0.4～0.7mm, 1200～1280 ℃ of Heating temperatures, heated finish to gauge thickness of slab 12～18mm, totally ton surplus in the of rolling 8,000 210～300 minutes, Ex-all rate of high-pressure water descaling improves 95% than prior art, and finished product reconditioning rate descends 90% than prior art.
And for example nickeliferous 3.0～4.0% die steel slab only need apply the coating of the present invention of 0.5～1.0mm, in 1250 ℃ of heating 240 minutes, scale oxide is more about 70% than original minimizing, and behind high-pressure water descaling, the finished product sheet material reconditioning quality after rolling is than the reduction of prior art more than 80%.
7. coating of the present invention is water-borne coatings, and is favourable to environment protection.
Claims (3)
1. a steel alloy de-scaling heated protective coating is characterized in that forming (weight %) and is SiO
235～50%, Al
2O
35～15%, high-carbon Cr-Fe powder (contain Cr 50～70%, C 5～8%, and surplus is Fe) 10～26%, MgO 6～12%, rare earth oxide (La
2O
3Ce
2O
3Deng) 5～10%, B
2O
34～8%, (Li
2O or K
2O) 3.5～8.5%.
2. according to a kind of steel alloy dephosphorization heated protective coating of claim 1, it is characterized in that forming the liquid coating of certain work viscosity with the water-base resin aqueous solution.
3. according to a kind of steel alloy de-scaling heated protective coating of claim 1 or 2, it is characterized in that used water-base resin is the acrylic acid resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03118989 CN1205285C (en) | 2003-04-24 | 2003-04-24 | Heating protection coating for desalling of alloy steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03118989 CN1205285C (en) | 2003-04-24 | 2003-04-24 | Heating protection coating for desalling of alloy steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1450131A true CN1450131A (en) | 2003-10-22 |
| CN1205285C CN1205285C (en) | 2005-06-08 |
Family
ID=28684374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03118989 Expired - Fee Related CN1205285C (en) | 2003-04-24 | 2003-04-24 | Heating protection coating for desalling of alloy steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1205285C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008095329A1 (en) * | 2007-01-31 | 2008-08-14 | Institute Of Process Engineering, Chinese Academy Of Sciences | An anti-oxidation coating for steel and method of protecting steel from oxidation |
| CN104877397A (en) * | 2015-05-21 | 2015-09-02 | 石家庄炳欣冶金炉料有限公司 | High-temperature protective coating for steel billets and applications thereof |
| CN105969076A (en) * | 2016-07-27 | 2016-09-28 | 攀钢集团研究院有限公司 | Water-based steel-titanium anti-sticking paint and application thereof |
| CN105969075A (en) * | 2016-07-27 | 2016-09-28 | 攀钢集团研究院有限公司 | Water-based steel-titanium isolation paint and application thereof |
| CN108465788A (en) * | 2018-03-29 | 2018-08-31 | 马鞍山市盈天钢业有限公司 | A kind of high strength bumper preparation method |
| CN109663716A (en) * | 2018-11-02 | 2019-04-23 | 山西大学 | A kind of aqueous coating process of powdery paints |
| CN113118715A (en) * | 2021-04-23 | 2021-07-16 | 上海明勤金属制品有限公司 | Processing method of metal display rack |
-
2003
- 2003-04-24 CN CN 03118989 patent/CN1205285C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008095329A1 (en) * | 2007-01-31 | 2008-08-14 | Institute Of Process Engineering, Chinese Academy Of Sciences | An anti-oxidation coating for steel and method of protecting steel from oxidation |
| US7494692B2 (en) | 2007-01-31 | 2009-02-24 | Institute of Process Engineering, Chinese Academy of Science | Antioxidation coating for steel and antioxidation method using the same |
| CN101426938B (en) * | 2007-01-31 | 2010-06-02 | 中国科学院过程工程研究所 | An anti-oxidation coating for steel and method of protecting steel from oxidation |
| CN104877397A (en) * | 2015-05-21 | 2015-09-02 | 石家庄炳欣冶金炉料有限公司 | High-temperature protective coating for steel billets and applications thereof |
| CN105969076A (en) * | 2016-07-27 | 2016-09-28 | 攀钢集团研究院有限公司 | Water-based steel-titanium anti-sticking paint and application thereof |
| CN105969075A (en) * | 2016-07-27 | 2016-09-28 | 攀钢集团研究院有限公司 | Water-based steel-titanium isolation paint and application thereof |
| CN105969076B (en) * | 2016-07-27 | 2018-12-21 | 攀钢集团研究院有限公司 | Aqueous steel-titanium anti-stick coating and its application |
| CN108465788A (en) * | 2018-03-29 | 2018-08-31 | 马鞍山市盈天钢业有限公司 | A kind of high strength bumper preparation method |
| CN109663716A (en) * | 2018-11-02 | 2019-04-23 | 山西大学 | A kind of aqueous coating process of powdery paints |
| CN113118715A (en) * | 2021-04-23 | 2021-07-16 | 上海明勤金属制品有限公司 | Processing method of metal display rack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1205285C (en) | 2005-06-08 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050608 Termination date: 20120424 |