CN1772675A - Low temperature electrostatic enamel powder for steel plate coating and its prepn - Google Patents
Low temperature electrostatic enamel powder for steel plate coating and its prepn Download PDFInfo
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- CN1772675A CN1772675A CN 200510094501 CN200510094501A CN1772675A CN 1772675 A CN1772675 A CN 1772675A CN 200510094501 CN200510094501 CN 200510094501 CN 200510094501 A CN200510094501 A CN 200510094501A CN 1772675 A CN1772675 A CN 1772675A
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Abstract
The low temperature electrostatic enamel powder for steel plate coating is prepared with base material silica, supplementary material alumina, magnesia and zinc oxide, flux boron oxide, sodium oxide and potassium oxide, adhesive cobalt oxide and nickel oxide, colorizing agent chromium oxide, copper oxide, ferric oxide, etc. All the materials are mixed, smelted, quenched, ball ground together with clay, etc. coated with organic siloxane polymer, and hot cure treated to produce the enamel powder. The enamel powder is sprayed electrostatically, sintered at 700-740 deg.c and cooled in air to form 180-200 microns thick enamel coating, which is acid and alkali corrosion resistant, heat resistant, wear resistant and firm, and has no surface faults.
Description
One, technical field
The present invention relates to a kind of powder coating and preparation method thereof, particularly nonmetal inorganic powder coating and preparation method thereof exactly is a kind of low temperature electrostatic enamel powder that is used for the steel plate application of slip and preparation method thereof.
Two, background technology
In the existing technology, a variety of measures have been protected on the surface of steel product, wherein adopt the technology of wet-process enamelling to account for significant proportion, adopt wet-process enamelling since the rheological of glaze slip to be difficult to control the defective of feasible product many, accepted product percentage is not high, and raw material can not reclaim in the application of slip process, and environment is caused certain pollution, makes the use of this excellent material of enamel be restricted.Dry method electrostatic spraying in recent years progressively grows up as a kind of novel enameling process, on certain degree, overcome above defective, the research and development of at present this novel enameling process and electrostatic enamel dry powder very fast, as United States Patent (USP): U.S.Pat.6,270,854 disclose a kind of preparation method who is used for the electrostatic dry powder of glass, pottery or metallic matrix, and its main component is carboxylate salt and metal oxide; U.S.Pat.5,145,804 disclose a kind of electrostatic enamel dry powder, and fusing assistant sodium oxide and potassium oxide and calcium oxide and barytic weight ratio are 1: 1 in its prescription, and its firing temperature is more than 825 ℃; U.S.Pat4,110,487 disclose two wards off an electrostatic painting process that burns.European patent: EP1,256,556A1 discloses the composition of vitreous enamel and has been used for the preparation method of powder, and its firing temperature is 760～830 ℃.EP1,123,904 disclose a kind of frit that cast iron is carried out electrostatic spraying, and its firing temperature is more than 780 ℃.
Three, summary of the invention
The object of the present invention is to provide a kind of firing temperature low, be applicable to the enamel powder that steel plate is carried out electrostatic spraying, this powder is forming the enamel layer (also claiming glass-lined coating) opaque, that chemical-resisting is strong after burning till on the steel plate.
This low temperature electrostatic enamel powder can use electrostatic painting process that surface of steel plate is carried out the application of slip, firing temperature low (700～740 ℃) after the application of slip.
This enamel powder comprises matrix material, auxiliary material and auxiliary agent.The matrix material is silicon-dioxide (SiO
2), be selected from quartz sand or/and white carbon black; Auxiliary material be selected from aluminium (Al) or/and magnesium (Mg) or/and zinc (Zn) or/and titanium (Ti) or/and the oxide compound of lithium (Li); Auxiliary agent comprises fusing assistant, adhesive agent, mill addition, caking agent and Drug coating.Described fusing assistant be selected from boron (B) or/and sodium (Na) or/and potassium (K) or/and the oxide compound of vanadium (V); Adhesive agent are selected from nickel (Ni) or/and the oxide compound of cobalt (Co); Mill addition be selected from non-metallic mineralss such as clay, kaolin, Attapulgite or/and quartz sand or/and silicofluoride; Caking agent is selected from unsaturated fatty acids etc., preferred tannic acid or/and Viscotrol C or/and turpentine wood oil; Drug coating is selected from organopolysiloxane, the hydrogen containing siloxane of preferred alkyl chain.Each component has following parts by weight:
40～60 parts of silicon-dioxide
5～25 parts in auxiliary material
15～40 parts of fusing assistants
1～10 part of adhesive agent
8～25 parts of mill additions
0.05～3 part of caking agent
0.05～5 part of Drug coating.
Preferably: 45～55 parts of silicon-dioxide
10～20 parts in auxiliary material
20～35 parts of fusing assistants
1.5～5 parts of adhesive agent
10～20 parts of mill additions
0.1～2 part of caking agent
0.1～3 part of Drug coating.
In above-mentioned basic components, can also add tinting material 0.5～10 weight part, preferred 1～8 weight part.Tinting material be selected from chromium (Cr) or/and copper (Cu) or/and the oxide compound of iron (Fe).
The preparation method of this enamel powder is: at first with the silicon-dioxide of certainweight umber, auxiliary material, fusing assistant, adhesive agent or/and tinting material mixes to be placed in the electric furnace founds, founding suddenly quenches in the porcelain melt impouring cold water that obtains obtains the porcelain frit, drop into the mill addition of a certain amount of umber behind the moisture drying on the porcelain frit that ball milling becomes the fine porcelain powder in the ball mill, the caking agent and the Drug coating that in the fine porcelain powder, add the certainweight umber then, mix and dressing, thermofixation just obtains the enamel powder behind the dressing.Described founding is to found under 1000～1300 ℃ of conditions, and described thermosetting turns to thermofixation 10～40min under 150～200 ℃ of conditions.
This enamel dry powder fineness 〉=300 orders, thermal expansivity are 295 * 10
-7～300.5 * 10
-7, than resistivity 10
13～10
15Ω .cm.Satisfy the requirement of electrostatic painting process fully.
To through pretreated steel product surface spraying enamel powder, in 700～740 ℃ conditions under burn till 1～3min after the spraying with electrostatic gun, directly cooling obtains the only enamel layer of 180～200 μ m of thickness in air.
Heavy metal elements such as not leaded in this enamel powder, cadmium, safe, nontoxic.Though have only the thickness of 180～200 μ m with the enamel layer of this enamel powdered preparation, but its acid-alkali-corrosive-resisting, performance such as heat-resisting, wear-resisting can not descend, and adhere to jail, intensity height, shock resistance, if unfortunate equipment with stirring anchor and so on rotates accessory and is in operation when bumping, can not come off or collapse porcelain yet, pin hole, bubble, crack or the distortion surface imperfection such as glaze that contract in the application of slip and postcooling process, can not occur.The enamel layer color is plentiful, bright-coloured, can select as required.
This enamel powder electrostatic painting process, ward off one of a firing technique and wet method and ward off a firing technique and compare with traditional two, work simplification, simple to operate, and firing temperature is low, the time is short, particularly in air, cool off, need not in baking oven or drying room, slowly to lower the temperature with rejected heat stress, the energy and time have not only been saved, and bring great convenience to construction, even construction operation at the scene, enamel dry powder can reclaim during spraying, and not having waste water, exhaust emission environment, is genuine cleaning procedure.
The comparison of the present invention and the traditional method application of slip
Four, embodiment
In production reality, silicon-dioxide can be raw material with quartz sand or white carbon black, and boron oxide can be a raw material with borax, and aluminum oxide can be a raw material with alumina, is raw material with its corresponding nitrate or carbonate then to the oxide compound of lithium, sodium, potassium, magnesium.In following non-limiting examples, during the above-mentioned oxide component of all appearance, all are the umbers that obtain through conversion by corresponding raw material.
One, a kind of black enamelled low temperature electrostatic enamel powder
1, get 45 parts of silicon-dioxide, 7 parts of aluminium sesquioxides, 1 part in magnesium oxide, 1 part in zinc oxide, 1 part of Lithium Oxide 98min, 10 parts of boron trioxides, 8 parts of sodium oxides, 7 parts of potassium oxides, 2 parts of nickel oxide, 0.4 part of cobalt oxide, 0.1 part in chromic oxide, 0.5 part of cupric oxide, 1 part of ferric oxide, mix, compound is put in the smelting furnace, progressively heat up and under 1100～1200 ℃ temperature, found 30～60min, chilling in the porcelain melt impouring water is become the porcelain frit, allocate 11 parts of mill addition potassium silicofluorides into putting into ball mill after the drying of the molten city of porcelain, 4 parts of one ball millings of clay, obtain the fine porcelain powder, in the fine porcelain powder, add 0.9 part of poly-methyl one hydrogen one siloxanes of 0.1 part of caking agent tannic acid and Drug coating, mix and wrap up, in taking out behind thermofixation 10～40min under 150～200 ℃ of temperature, this low temperature electrostatic enamel powder can pass through 350 mesh sieves.The low temperature electrostatic enamel powder that makes is sprayed on the workpiece that 10cm * 10cm handled well with electrostatic gun, places electric furnace to burn till through 1～3min under 700～740 ℃ temperature.Finished color is black gorgeous, any surface finish, exterior appearance, defectives such as free of pinholes, bubble.Acid and alkali-resistance, wear-resisting, shock resistance, high temperature resistant property are good.
2, get 55 parts of silicon-dioxide, 5 parts of aluminium sesquioxides, 3 parts in magnesium oxide, 1 part in zinc oxide, 1 part of Lithium Oxide 98min, 12 parts of boron trioxides, 5 parts of sodium oxides, 3 parts of potassium oxides, 1.9 parts of nickel oxide, 0.5 part of cobalt oxide, 0.1 part in chromic oxide, 0.4 part of cupric oxide, 1.1 parts of ferric oxide, found after the mixing, cold quenching is with embodiment 1, exsiccant porcelain frit is with 8 parts of mill addition quartz sands, 2 parts of one ball millings of kaolin obtain the fine porcelain powder, the fine porcelain powder mixes and wraps up for 0.9 part with 0.1 part of caking agent Viscotrol C and Drug coating polydimethylsiloxane, and thermofixation and electrostatic spraying are with embodiment 1.
Two, a kind of low temperature electrostatic enamel powder of light yellow porcelain facing
3, get 50 parts of silicon-dioxide, 6 parts of aluminium sesquioxides, 3 parts in magnesium oxide, 2 parts in zinc oxide, 12 parts of boron trioxides, 5 parts of sodium oxides, 3 parts of potassium oxides, 1.5 parts of nickel oxide, 0.5 part of cobalt oxide, 1 part in chromic oxide; 10 parts of mill addition potassium silicofluorides, 5 parts of attapulgites; 0.8 part of 0.2 part of caking agent Viscotrol C, Drug coating methyl-vinyl-siloxanes.Found, cold quenching, ball milling, mixing dressing process with embodiment 1, handle with embodiment 1 electrostatic spraying.Obtain light yellow enamel, porcelain facing is bright and clean, and no pinprick bubble is put for a long time not have and taken off the generation of porcelain decolouring phenomenon.Enamel coating acid and alkali-resistance, wear-resisting, shock resistance, high temperature resistant property are good.
4, get 48 parts of silicon-dioxide, 5 parts of aluminium sesquioxides, 4 parts in magnesium oxide, 1 part in zinc oxide, 13 parts of boron trioxides, 6 parts of sodium oxides, 3 parts of potassium oxides, 1 part of nickel oxide, 1 part of cobalt oxide, 1 part in chromic oxide; 10 parts of mill addition quartz sands, 6 parts of clays; 0.3 part of caking agent tannic acid, 0.7 part of Drug coating methyl-hydrogen-siloxanes.Found, cold quenching, ball milling, mixing dressing process with embodiment 1, handles obtaining light yellow enamel with embodiment 1 electrostatic spraying.
Three, a kind of low temperature electrostatic enamel powder of mazarine porcelain facing
5, get 46 parts of silicon-dioxide, 12 parts of aluminium sesquioxides, 1 part in magnesium oxide, 1 part in zinc oxide, 10 parts of boron trioxides, 7 parts of sodium oxides, 3 parts of potassium oxides, 1 part of nickel oxide, 1 part of cobalt oxide, 2 parts of ferric oxide; 10 parts of mill addition potassium silicofluorides, 5 parts of kaolin; 0.2 part of caking agent tannic acid, 0.8 part of Drug coating polydimethylsiloxane.Found, cold quenching, ball milling, mixing dressing process with embodiment 1, handles obtaining mazarine enamel with embodiment 1 electrostatic spraying, porcelain facing is bright and clean, no pinprick bubble is put for a long time not have and is taken off the generation of porcelain decolouring phenomenon.Enamel coating acid and alkali-resistance, wear-resisting, shock resistance, high temperature resistant property are good.
6, get 49 parts of silicon-dioxide, 9 parts of aluminium sesquioxides, 1 part in magnesium oxide, 1 part in zinc oxide, 12 parts of boron trioxides, 5 parts of sodium oxides, 3 parts of potassium oxides, 1 part of nickel oxide, 1 part of cobalt oxide, 2 parts of ferric oxide; 10 parts of mill addition quartz sands, 5 parts of clays; 0.7 part of the poly-methyl-hydrogen of 0.3 part of caking agent turpentine wood oil, Drug coating-siloxanes.Found, cold quenching, ball milling, mixing dressing process with embodiment 1, handles obtaining mazarine enamel with embodiment 1 electrostatic spraying.
Claims (6)
1, a kind of low temperature electrostatic enamel powder that is used for the steel plate application of slip has following component and parts by weight:
40～60 parts of silicon-dioxide
5～25 parts in auxiliary material
15～40 parts of fusing assistants
1～10 part of adhesive agent
8～25 parts of mill additions
0.05～2 part of caking agent
0.05～5 part of Drug coating;
Described auxiliary material be selected from aluminium or/and magnesium or/and zinc or/and titanium or/and the oxide compound of lithium,
Described fusing assistant be selected from boron or/and sodium or/and potassium or/and the oxide compound of vanadium,
Described adhesive agent are selected from nickel or/and the oxide compound of cobalt,
Described mill addition be selected from non-metallic minerals or/and quartz sand or/and silicofluoride,
Described caking agent is selected from unsaturated fatty acids or its ester,
Described Drug coating is selected from organopolysiloxane.
2, enamel powder according to claim 1 is characterized in that: preferred following parts by weight:
45～55 parts of silicon-dioxide
10～20 parts in auxiliary material
20～35 parts of fusing assistants
1.5～5 parts of adhesive agent
10～20 parts of mill additions
0.1～1 part of caking agent
0.1～3 part of Drug coating;
Described auxiliary material be selected from aluminium or/and magnesium or/and zinc or/and titanium or/and the oxide compound of lithium,
Described fusing assistant be selected from boron or/and sodium or/and potassium or/and the oxide compound of vanadium,
Described adhesive agent are selected from nickel or/and the oxide compound of cobalt,
Described mill addition be selected from non-metallic minerals or/and quartz sand or/and silicofluoride,
Described caking agent be selected from tannic acid or/and Viscotrol C or/and turpentine wood oil,
Described Drug coating is selected from the hydrogen containing siloxane of alkyl chain.
3, enamel powder according to claim 1 and 2 is characterized in that: also contain the tinting material of 0.5～10 weight part, tinting material be selected from chromium or/and copper or/and the oxide compound of iron.
4, enamel powder according to claim 3 is characterized in that: the tinting material of preferred 1～8 weight part, tinting material be selected from chromium or/and copper or/and the oxide compound of iron.
5, by the preparation method of the described enamel powder of claim 1, comprise found, cold quenching, drying, ball milling, dressing and each unit process of thermofixation, it is characterized in that: described founding is that silicon-dioxide, auxiliary material, fusing assistant and adhesive agent are obtained the porcelain melt or/and tinting material mixes the back in 1000～1300 ℃ of condition fusions; The porcelain melt obtains the porcelain frit through cold quenching; The porcelain frit carries out ball milling with mill addition after drying and obtains the fine porcelain powder; In the fine porcelain powder, add caking agent and Drug coating, mix and dressing; Behind the dressing in 150～200 ℃ of condition thermofixation 10～40min.
6, preparation method according to claim 5 is characterized in that: caking agent be tannic acid or/and Viscotrol C or/and turpentine wood oil; Drug coating is the hydrogen containing siloxane of alkyl chain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100945011A CN100369840C (en) | 2005-09-20 | 2005-09-20 | Low temperature electrostatic enamel powder for steel plate coating and its prepn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100945011A CN100369840C (en) | 2005-09-20 | 2005-09-20 | Low temperature electrostatic enamel powder for steel plate coating and its prepn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1772675A true CN1772675A (en) | 2006-05-17 |
| CN100369840C CN100369840C (en) | 2008-02-20 |
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ID=36759839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100945011A Expired - Fee Related CN100369840C (en) | 2005-09-20 | 2005-09-20 | Low temperature electrostatic enamel powder for steel plate coating and its prepn |
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| CN101967042A (en) * | 2010-06-29 | 2011-02-09 | 蔡文仁 | Electrostatic enamel powder and preparation method thereof |
| CN102181862A (en) * | 2011-04-12 | 2011-09-14 | 浙江开尔新材料股份有限公司 | Preparation method of enameled steel sheet |
| CN101896644B (en) * | 2007-12-13 | 2012-05-30 | 安赛乐米塔尔法国公司 | Process for the production of enamelled steel sheet or part |
| CN103058520A (en) * | 2012-12-18 | 2013-04-24 | 龙门协成新材料有限公司 | Porcelain enamel material applied to enameled steel plate at inner wall of subway |
| CN103193387A (en) * | 2013-04-23 | 2013-07-10 | 大唐国际化工技术研究院有限公司 | Enamel material for 1Cr18Ni9Ti stainless steel surface and preparation method thereof |
| CN103276396A (en) * | 2013-05-31 | 2013-09-04 | 哈尔滨工业大学 | Method for enameling temperature-resistant enamel materials for 1Cr18Ni9Ti stainless steel surface |
| CN103864303A (en) * | 2014-03-12 | 2014-06-18 | 临沂宏业化工设备有限公司 | Glass lining ground coat |
| CN104058592A (en) * | 2014-06-27 | 2014-09-24 | 莱芜钢铁集团有限公司 | Method for preparing enamel coating and enamel coating prepared by using method |
| CN104817271A (en) * | 2015-02-11 | 2015-08-05 | 襄阳高铭矿业有限公司 | Preparation method of enamel electrostatic glaze powder and enamel electrostatic glaze powder prepared by method |
| CN105130192A (en) * | 2015-09-01 | 2015-12-09 | 邯郸市龙翔化工材料有限公司 | Electrostatic wrapping liquid of vitreous enamel frit and electrostatic vitreous enamel powder and preparation method thereof |
| CN106746662A (en) * | 2017-02-05 | 2017-05-31 | 湖南信诺颜料科技有限公司 | Antiknock enamel electrostatic powder and preparation |
| CN107121006A (en) * | 2017-06-06 | 2017-09-01 | 昆山美邦环境科技股份有限公司 | Dual anti-corrosion weathering steel enamel heat transfer element and preparation method thereof |
| CN108203244A (en) * | 2016-12-17 | 2018-06-26 | 江西科盛环保股份有限公司 | It is a kind of for common cold rolling, the quick-fried electrostatic dry powder of the anti-squama of hot rolled plate counterenamel preparation method |
| CN108821587A (en) * | 2018-08-14 | 2018-11-16 | 南京双峰油泵油嘴有限公司 | A kind of cast iron industrial enamel formula and technique |
| CN109399935A (en) * | 2018-12-28 | 2019-03-01 | 福建省德化县顺兴达陶瓷工艺有限公司 | A kind of preparation method of metal oxide ceramic glaze and products thereof |
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| DE19654077A1 (en) * | 1996-12-23 | 1998-06-25 | Bayer Ag | Enamel compositions, processes for their preparation and their use |
| EP0916624B1 (en) * | 1997-11-11 | 2001-07-25 | Kawasaki Steel Corporation | Porcelain-enameled steel sheets and frits for enameling |
| CN1142113C (en) * | 1998-09-28 | 2004-03-17 | 中国科学院金属腐蚀与防护研究所 | High-temp. protecting technique of Ti alloy and intermetallic Ti-Al compound |
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| CN101896644B (en) * | 2007-12-13 | 2012-05-30 | 安赛乐米塔尔法国公司 | Process for the production of enamelled steel sheet or part |
| CN101967042B (en) * | 2010-06-29 | 2012-08-08 | 蔡文仁 | Electrostatic enamel powder and preparation method thereof |
| CN101967042A (en) * | 2010-06-29 | 2011-02-09 | 蔡文仁 | Electrostatic enamel powder and preparation method thereof |
| CN102181862A (en) * | 2011-04-12 | 2011-09-14 | 浙江开尔新材料股份有限公司 | Preparation method of enameled steel sheet |
| CN102181862B (en) * | 2011-04-12 | 2012-11-14 | 浙江开尔新材料股份有限公司 | Preparation method of enameled steel sheet |
| CN103058520A (en) * | 2012-12-18 | 2013-04-24 | 龙门协成新材料有限公司 | Porcelain enamel material applied to enameled steel plate at inner wall of subway |
| CN103193387A (en) * | 2013-04-23 | 2013-07-10 | 大唐国际化工技术研究院有限公司 | Enamel material for 1Cr18Ni9Ti stainless steel surface and preparation method thereof |
| CN103276396A (en) * | 2013-05-31 | 2013-09-04 | 哈尔滨工业大学 | Method for enameling temperature-resistant enamel materials for 1Cr18Ni9Ti stainless steel surface |
| CN103864303B (en) * | 2014-03-12 | 2015-12-09 | 临沂宏业化工设备有限公司 | A kind of glass lining bottom glaze |
| CN103864303A (en) * | 2014-03-12 | 2014-06-18 | 临沂宏业化工设备有限公司 | Glass lining ground coat |
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| CN104058592B (en) * | 2014-06-27 | 2016-08-24 | 莱芜钢铁集团有限公司 | The preparation method of a kind of enamel coating and the enamel coating prepared |
| CN104817271B (en) * | 2015-02-11 | 2017-03-08 | 襄阳高铭矿业有限公司 | A kind of preparation method of enamel electrostatic powdered frit and its enamel electrostatic powdered frit |
| CN104817271A (en) * | 2015-02-11 | 2015-08-05 | 襄阳高铭矿业有限公司 | Preparation method of enamel electrostatic glaze powder and enamel electrostatic glaze powder prepared by method |
| CN105130192A (en) * | 2015-09-01 | 2015-12-09 | 邯郸市龙翔化工材料有限公司 | Electrostatic wrapping liquid of vitreous enamel frit and electrostatic vitreous enamel powder and preparation method thereof |
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| CN106746662B (en) * | 2017-02-05 | 2019-05-14 | 湖南信诺颜料科技有限公司 | Antiknock enamel electrostatic powder and preparation |
| CN106746662A (en) * | 2017-02-05 | 2017-05-31 | 湖南信诺颜料科技有限公司 | Antiknock enamel electrostatic powder and preparation |
| CN107121006A (en) * | 2017-06-06 | 2017-09-01 | 昆山美邦环境科技股份有限公司 | Dual anti-corrosion weathering steel enamel heat transfer element and preparation method thereof |
| CN108821587A (en) * | 2018-08-14 | 2018-11-16 | 南京双峰油泵油嘴有限公司 | A kind of cast iron industrial enamel formula and technique |
| CN108821587B (en) * | 2018-08-14 | 2021-10-15 | 南京双峰油泵油嘴有限公司 | Formula and process of industrial enamel for cast iron |
| CN109399935A (en) * | 2018-12-28 | 2019-03-01 | 福建省德化县顺兴达陶瓷工艺有限公司 | A kind of preparation method of metal oxide ceramic glaze and products thereof |
| CN110129795A (en) * | 2019-05-09 | 2019-08-16 | 中国科学院金属研究所 | Gradient coating for resisting oxidation material and preparation method thereof is seeped in a kind of resistance of new type high temperature |
| CN110172697A (en) * | 2019-06-11 | 2019-08-27 | 东阳市优越日用品有限公司 | A kind of manufacture craft of enamel rustless steel warmer |
| CN111466780A (en) * | 2020-04-09 | 2020-07-31 | 河北立德尔炊具股份有限公司 | Cast iron enamel cooker and preparation method thereof |
| CN111466780B (en) * | 2020-04-09 | 2022-04-12 | 河北立德尔炊具股份有限公司 | Cast iron enamel cooker and preparation method thereof |
| CN113493351A (en) * | 2021-07-07 | 2021-10-12 | 邦得(浙江)新材料科技有限公司 | Preparation method of metal coating on ceramic surface |
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