CN1071705A - Coatings for preventing high temperature oxidation on the surface of steel ingots and billets - Google Patents
Coatings for preventing high temperature oxidation on the surface of steel ingots and billets Download PDFInfo
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- CN1071705A CN1071705A CN 92106302 CN92106302A CN1071705A CN 1071705 A CN1071705 A CN 1071705A CN 92106302 CN92106302 CN 92106302 CN 92106302 A CN92106302 A CN 92106302A CN 1071705 A CN1071705 A CN 1071705A
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- 238000000576 coating method Methods 0.000 title claims abstract description 80
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 79
- 239000010959 steel Substances 0.000 title claims abstract description 79
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 17
- 230000003647 oxidation Effects 0.000 title claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 74
- 239000000843 powder Substances 0.000 claims abstract description 39
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 22
- 239000011707 mineral Substances 0.000 claims abstract description 22
- 239000003973 paint Substances 0.000 claims abstract description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 9
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910010413 TiO 2 Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 39
- 239000000203 mixture Substances 0.000 claims description 20
- 239000011230 binding agent Substances 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 14
- 239000004816 latex Substances 0.000 claims description 8
- 229920000126 latex Polymers 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 abstract description 9
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 238000005096 rolling process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 206010067482 No adverse event Diseases 0.000 abstract description 3
- 230000003064 anti-oxidating effect Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 abstract description 3
- 230000008595 infiltration Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 1
- 231100000252 nontoxic Toxicity 0.000 abstract 1
- 230000003000 nontoxic effect Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 23
- 235000010755 mineral Nutrition 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 10
- 239000011734 sodium Substances 0.000 description 6
- 239000008199 coating composition Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000010301 surface-oxidation reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- MRMOZBOQVYRSEM-UHFFFAOYSA-N tetraethyllead Chemical compound CC[Pb](CC)(CC)CC MRMOZBOQVYRSEM-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000012669 liquid formulation Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000015424 sodium Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000002110 toxicologic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
本发明为防止特钢和普钢的钢锭、钢坯表面高温 氧化的无机涂料，主要是由含SiO2、Al2O3、CaO、 Fe2O3、FeO、TiO2等成分的天然矿物及其加工物粉 剂和含硅化物粘接剂混合制成。制备和实施工艺简 单易行。涂料涂层耐高温防氧化效果显著而稳定，有 效地保证特钢和普钢的钢锭与钢坯在烧钢时不生成 氧化铁皮，减少了金属烧损，大幅度提高钢材表面质 量和成材率。轧前易去除，对钢基体无任何化学反应 和渗入，对钢材金相组织和性能无不良影响。本发明 涂料无毒无害、无污染、不燃烧，使用安全，成本低，易 于在生产中推广应用。The present invention is an inorganic coating for preventing high-temperature oxidation on the surface of steel ingots and billets of special steel and common steel, mainly composed of natural minerals containing SiO 2 , Al 2 O 3 , CaO, Fe 2 O 3 , FeO, TiO 2 and other components and their It is made by mixing processed product powder and silicide-containing adhesive. The preparation and implementation process is simple and easy. The high temperature and anti-oxidation effect of the paint coating is remarkable and stable, effectively ensuring that the steel ingots and billets of special steel and general steel do not generate scale when they are fired, reducing metal burning loss, and greatly improving the surface quality and yield of steel products. It is easy to remove before rolling, does not have any chemical reaction and infiltration to the steel matrix, and has no adverse effects on the metallographic structure and properties of the steel. The coating of the invention is non-toxic, harmless, pollution-free, non-combustible, safe to use, low in cost and easy to popularize and apply in production.
Description
The present invention relates to the inorganic paint of steel ingot and billet surface preventing high temperature oxidation.
In existing steel rolling process, no matter surface oxidation all takes place when steel ingot and steel billet heating in general steel or special steel, produces a large amount of iron scales, causes a large amount of metal losses.Special steel is also produced the adhesivity iron scale of be difficult for removing, cause surface quality defective after being rolled into steel, reduce lumber recovery greatly.For the problems referred to above, the general control burning steel temperature that only adopts reduces the iron scale amount, and the iron sheet that has taken place is then utilized ways such as high pressure water washes out.
Having both at home and abroad at present utilizes coating that the technology that coating prevents high temperature oxidation is carried out in the metallic surface.We have retrieved the World Patent Index and the metal digest in January, 1963～1992 by international online, manual information retrieval 1985 to 1991 Chinese invention patent communiques, find 8 pieces of relevant documents altogether, wherein the patent of invention document is 5 pieces, 3 pieces in general document.Above-mentioned document all the technology identical with content of the present invention of not finding.As Japanese Patent 7876846(780622) name be called " steel plate aluminize before brush one deck silicic acid medium and contain the inorganic lacquer of phosphide ", the chemical ingredients prescription of this patent is different with the present invention with use.United States Patent (USP) 771527(850830), name is called " fire-resistant coating of water cement ", differs very big with content of the present invention.Japanese Patent 70113471(701217), name is called " coating of flame resistant steel ", the coating formula of this patent is to be main raw material with the water glass, also contains perlite, vermiculite, sodium silicofluoride, tetraethyllead ammonia and acetate resin etc., and is to be used on the building iron.As seen system component is different with the present invention with purposes.The domestic patent No. is CN1050890A.7-17, and denomination of invention is " a high temperature resistant antioxidizing paint ", and the composition of this patent coating is boride, glass powder, is used for Graphite Electrodes.Another piece patent report, publication number is GK85104193.2-28, denomination of invention has high-load zinc etc. for " method of a kind of liquid formulation, metallizing substrate and the metal substrates that obtains thus " in its formulation for coating material.1985; 66.Janpats(India New Delhi) three pieces of documents of publication; name is called " the high temperature resistant diffusion coating structure and the chemical ingredients of steel "; " high-temperaure coating is used for protecting the instrument and the device of metallurgical industry and industrial plants (building) "; " obtain some performances of the saturated media of high-temperaure coating ", wherein the coating formula of Jie Shaoing contains compositions such as borax, Sodium Fluoride; be used on pure iron and carbon steel or industrial setting instrument and the device, these are different with content of the present invention.Also find to utilize Cr simultaneously abroad
2O
3, ZrO
2Deng the simple report that is the high-temperature coatings research of main complicated ingredient, but the system component complexity, the cost height has certain toxicity and pollution, and application techniques is also complicated.
Oxidation takes place in the steel ingot and the steel billet that the objective of the invention is to solve the general steel of special steel when burning the steel heating, produce a large amount of iron scale problems, promptly in order to reduce metal loss, and reduces the product off quality that causes because of iron scale.For this reason our company began in 1979 to contain Ni, Cr steel surface oxidation mechanism has been done monographic study; and exploratory development is successful successively, and steel ingot and steel billet roll preceding coating protection; searched out and be easy to application; burn effectively not oxidation of protective money metal surface in the steel; be easy to the coating formula removed before rolling again; and in beginning commerical test in 1987, the test of the various steels under actual production conditions all obtained positive effect.
The preventing high temperature oxidation coating of steel ingot of the present invention and billet surface mainly is to be main raw material with 101 natural mineral, according to different needs, also can be suitably carry out proportioning with raw material 102,103,104 natural mineral etc., and and binding agent suitably mix, make coating of the present invention.First kind of prescription of coating of the present invention is to adopt the 100%(weight percent) raw material 101 natural mineral coating material powders be milled to-140～-200 orders and binding agent mixing and stirring and make, its ratio of mixture is 1.5～2: 1.The composition (weight percent) of raw material 101 natural mineral coating material powders is SiO
2: 46.0～51.0; Al
2O
3: 12.0～15.0; CaO:9.0～12.0; FeO:8.0～11.0; MgO:5.0～7.0; Fe
2O
3: 4.0～7.0; TiO
2: 2.0～4.0; Na
2O:1.8～3.0; K
2O:0.5～1.2; Cr
2O
3: 0.3～0.7.Binding agent is for containing silicide Na
2SiO
3The latex thing.
Second kind of prescription of this coating is to be on the main raw material basis at 101 natural mineral coating material powders, coffee is gone into an amount of 102 natural mineral coating material powders and is carried out proportioning, i.e. 80% 101 coating material powders, 20%102 coating material powders are milled to-140～-200 orders and binding agent mixing and stirring and make.Its ratio of mixture is: 1.5～2: 1.The composition (weight percent) of raw material 102 natural mineral coating material powders is Al
2O
3: 72.0～79.0; SiO
2: 22.0～28.0.Binding agent is for containing silicide Na
2SiO
3The latex thing.
The third prescription of this coating is to be on the main raw material basis at 101 natural mineral coating material powders, add 103 and 104 an amount of natural mineral coating material powders and carry out proportioning, i.e. 90% 101 coating material powders, 5% 103 coating material powders, 5% 104 coating material powders are milled to-140～-200 orders and binding agent mixing and stirring and make.Its ratio of mixture is: 1.5～2: 1.Wherein the composition of 103 natural mineral coating material powders (weight percent) is, MgO:78.0～85.0; SiO
2: 4.0～6.0; Al
2O
3: 4.0～5.0; CaO:2.0～3.0; Fe
2O
3: 2.0～3.0; The composition of 104 natural mineral coating material powders (weight percent) is: Al
2O
3: 50.0～57.0; SiO
2: 35.0～41.0; Fe
2O
3: 1.0～3.0; TiO
2: 1.0～3.0; CaO:0.5～1.2; MgO:0.1～0.5.Binding agent is for containing silicide Na
2SiO
3The latex thing.
The 4th kind of prescription of this coating is to be on the main raw material basis at 101 natural mineral coating material powders, add an amount of 103 and 104 natural mineral coating material powders and carry out proportioning, i.e. 80% 101 coating material powders, 10% 103 coating material powders, 10% 104 coating material powders are milled to-140～-200 orders and binding agent mixing and stirring and make.Its ratio of mixture is: 1.5～2: 1.Binding agent is for containing silicide Na
2SiO
3The latex thing.
The coating of foregoing invention can at special steel and general steel ingot and billet surface be brushed, spraying and dip-coating.Spraying can be a power with pressurized air, can select the construction industry blackwash sprayer for use, also available airless sprayer.Spray gun is capable of being combined to carry out the single or double operation in the rolling line both sides.Steel ingot and steel billet can utilize crane, roller-way or dolly to advance running.Coating can be heated and be carried out thermospray.Dip-coating is steel ingot or steel billet to be hung in the coatings tank carry out, and lifts up and down for several times evenly.Come control coating thickness and prevent trickling by changing coating concentration, temperature and viscosity.
Coating of the present invention has following several characteristics:
(1) has enough cohesive forces and cohesive strength, ultimate compression strength and good wear resistance after the paint coatings drying, make in handling, stacking and roller-way vibrations not come off;
(2) paint coatings has compactness, can the anti-oxidation of secluding air.Coating formula of the present invention makes it to have sufficiently high refractoriness and suitable load softening point, so that has good snappiness and levelling stream at the heating floating coat, has increased the compactness of film, plays the secluding air effect;
(3) burn the cooling back coating of coming out of the stove in the steel and become fragile, removal easily comes off;
(4) the snappiness protective membrane is not burnt in burning steel, is because the refractoriness of coating is up to 1500 ℃ in the coating, 1250～1350 ℃ of far super burnt steel temperature;
(5) chemical reaction and any infiltration do not take place to matrix metal in coating, and steel microstructure and performance are had no adverse effects.
Coating of the present invention has following advantage and positively effect:
1. this paint coatings applies to steel ingot billet surface and other steel surfaces of special steel and general steel, and original surface is not had particular requirement, and easily application can coldly be coated with heat and is coated with.Application can be carried out on production line, does not change former steel rolling process, can carry out continuously.Processing unit is simple and reliable, and technological operation is stable, take up an area of little, a less investment.
2. the coating clinging power is strong, and intensity height own can anti-1500 ℃ of high temperature, and persistence is long, does not come off and can effectively protect in burning steel, prevents oxidization burning loss and takes off charcoal, is easy to thoroughly peel off removal after burning steel, and oxidation-protective effect is significantly stablized.
3. coating material is easily obtained, and it is formulated to take from several natural mineral and machining object thereof.(about 0.5 yuan of every kg) with low cost do not contain any organic substance, and toxicological harmless is pollution-free, does not burn, and is safe in utilization; Steel there are not chemical reaction and any infiltration, not attack metal matrix.Steel microstructure and performance are had no adverse effects.
4. reduce metal loss amount 5%, produce 8000000 tons of steel mills per year, can create hundred million yuan of benefits; Special steel surface qualification rate can bring up to 90～95% by 30～50%.Anshan iron and steel plant only with regard to special steel, can be created economic benefit and reach 1,000 ten thousand yuan.Also extend to other Metallurgical Factories.
Be one embodiment of the invention below, promptly brush the alloy billet that contains Ni, Cr by prescription 1, on modern steel rolling production-line, implement in 35 blocks of (about 150 tons) steel billets of application, burning the steel temperature is 1250～1350 ℃, burn 5～8 hours steel time, coating complete nothing in burning steel and handling comes off, and implements effectively protection; Rolling preceding water is towards being easy to peel off removal after burning steel, and any surface finish does not have iron sheet, surperficial qualified no burn out rate＞95%.
Claims (4)
1, a kind of steel ingot, billet surface and other steel preventing high temperature oxidation inorganic paints that is used for special steel and general steel, it is characterized in that preventing high temperature oxidation coating is to be milled to-140～-200 orders and binding agent mixing and stirring by 100% raw material 101 natural mineral coating material powders and to make, its ratio of mixture is 1.5～2: 1.The composition (weight percent) of raw material 101 natural mineral coating material powders is SiO
2: 46.0～51.0; Al
2O
3: 12.0～15.0; CaO:9.0～12.0; FeO:8.0～11.0; MgO:5.0～7.0; Fe
23: 4.0～7.0; TiO
2: 2.0～4.0; Na
2O:1.8～3.0; K
2O:0.5～1.2; Cr
2O
3: 0.3～0.7.Binding agent is for containing silicide Na
2SiO
3The latex thing.
2, according to steel ingot, billet surface and other steel preventing high temperature oxidation inorganic paints of described special steel of claim 1 and general steel, it is characterized in that preventing high temperature oxidation coating is is on the main raw material basis at 101 coating material powders, add an amount of 102 natural mineral coating material powders and carry out proportioning, i.e. 80% 101 coating material powders, 20%102 coating material powders are milled to-140～-200 orders and binding agent mixing and stirring and make.Its ratio of mixture is: 1.5～2: 1.The composition (weight percent) of raw material 102 natural ore deposit coating material powders is Al
2O
3: 72.0～79.0; SiO
2: 22.0～28.0.Binding agent is for containing silicide Na
2SiO
3The latex thing.
3, according to steel ingot, billet surface and other steel preventing high temperature oxidation inorganic paints of described special steel of claim 1 and general steel, it is characterized in that preventing high temperature oxidation coating is is on the main raw material basis at 101 coating material powders, add 103 and 104 an amount of natural mineral coating material powders and carry out proportioning, i.e. 90% 101 coating material powders, 5% 103 coating material powders, 5% 104 coating material powders are milled to-140～-200 orders and binding agent mixing and stirring and make.Its ratio of mixture is: 1.5～2: 1.Wherein the composition of 103 natural mineral coating material powders (weight percent) is, MgO:78.0～85.0; SiO
2: 4.0～6.0; Al
2O
3: 4.0～5.0; CaO:2.0～3.0; Fe
2O
3: 2.0～3.0; The composition of 104 natural mineral coating material powders (weight percent) is: Al
2O
3: 50.0～57.0; SiO
2: 35.0～41.0; Fe
2O
3: 1.0～3.0; TiO
2: 1.0～3.0; CaO:0.5～1.2; MgO:0.1～0.5.Binding agent is for containing silicide Na
2SiO
3The latex thing.
4, the steel ingot of described special steel of claim 1 and general steel, billet surface and other steel surface preventing high temperature oxidation inorganic paints, it is characterized in that preventing high temperature oxidation coating is to carry out proportioning at 101 natural mineral coating material powders, i.e. 80% 101 coating material powders, 10% 103 coating material powders, 10% 104 coating material powders are milled to-140～-200 orders and binding agent mixing and stirring and make.Its ratio of mixture is: 1.5～2: 1.Binding agent is for containing silicide Na
2SiO
3The latex thing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106302 CN1071705A (en) | 1992-07-06 | 1992-07-06 | Coatings for preventing high temperature oxidation on the surface of steel ingots and billets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106302 CN1071705A (en) | 1992-07-06 | 1992-07-06 | Coatings for preventing high temperature oxidation on the surface of steel ingots and billets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1071705A true CN1071705A (en) | 1993-05-05 |
Family
ID=4941992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106302 Withdrawn CN1071705A (en) | 1992-07-06 | 1992-07-06 | Coatings for preventing high temperature oxidation on the surface of steel ingots and billets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1071705A (en) |
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| 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 |
| WO2008131598A1 (en) * | 2007-04-29 | 2008-11-06 | Dalian Rino Environment Engineering Science And Technology Co., Ltd | A coating method and equipment for protecting steel billets from oxidating |
| CN100453604C (en) * | 2002-12-20 | 2009-01-21 | 鞍钢股份有限公司 | A coating for preventing decarburization of high carbon billets |
| CN100532466C (en) * | 2006-04-21 | 2009-08-26 | 中国科学院过程工程研究所 | A kind of anti-oxidation coating for high temperature ordinary low carbon steel and its application |
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| CN102453794A (en) * | 2010-11-02 | 2012-05-16 | 中国科学院过程工程研究所 | A high-temperature anti-decarburization coating material for spring steel |
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-
1992
- 1992-07-06 CN CN 92106302 patent/CN1071705A/en not_active Withdrawn
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