CN102976614A - Low-cost glass enamel powder for stainless steel - Google Patents
Low-cost glass enamel powder for stainless steel Download PDFInfo
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- CN102976614A CN102976614A CN201210544619XA CN201210544619A CN102976614A CN 102976614 A CN102976614 A CN 102976614A CN 201210544619X A CN201210544619X A CN 201210544619XA CN 201210544619 A CN201210544619 A CN 201210544619A CN 102976614 A CN102976614 A CN 102976614A
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Abstract
The invention relates to a low-cost glass enamel powder for stainless steel. The invention is characterized in that 10-90 wt% of iron-aluminum alloy powder is doped in the low-cost glass enamel powder for stainless steel, wherein the aluminum content in the iron-aluminum alloy powder is 5-65 wt%, and the phase composition of the iron-aluminum alloy must comprise at least one of Fe3Al, FeAl, Fe2Al5 and FeAl3; and the particle size of the iron-aluminum alloy powder is 0.1-50 mu m. The low-cost glass enamel powder for stainless steel solves the problem of difficulty in fusing common glass enamel on stainless steel, and can be carried out according to various existing glass enamel techniques. The invention has the advantages of green and environment-friendly raw materials (such as iron-aluminum alloy powder and the like), wide sources and low price, and therefore, is low at cost and suitable for large-scale application.
Description
Technical field
The present invention relates to glass enamel coating and sealing technology field, particularly a kind of stainless steel with low-cost glass enamel powder.
Background technology
Usually use a large amount of reactors at pharmacy, food-processing and chemical field, its material mostly is Glassed Steel and stainless steel.Because the temperature tolerance of enamel ware is low and imperfection sensitivity is higher, and the higher occasion of the stability requirement of reactor is often being used stainless steel cauldron.Such as pharmacy and food processing field, require reactor to have better anticorrosive quality, otherwise the corrosion of reactor inwall not only affect its life-span, the more important thing is and will cause medicine pollution and cause food-safety problem.Although stainless steel has certain solidity to corrosion, the weakness that it is fatal, i.e. chlorion spot corrosion and Susceptibility To Intergranular Corrosion cause reactor to subtract greatly practical life.In recent years report shows, 304 stainless steel cauldrons that domestic certain factory's glyphosate production is used use less than heavy corrosion namely occured in 2 months, cause stopping production maintenance [referring to document: Chen Dongsheng, Lian Zhouyang, Wei Wuji, Zhou Yongzhang, the sweet unicorn of grass produces the microscopic analysis with the stainless steel cauldron corrosion, corrosion and protection, 32,548 (2011)].
Adopt the glass enamel technology, then can the stainless chlorion spot corrosion of establishment and Susceptibility To Intergranular Corrosion problem, thus significantly improve the solidity to corrosion of stainless steel cauldron.Yet common enamel coating is difficult to be attached to austenite stainless steel matrix commonly used, in the process of cooling after firing, almost all comes off.At present this be in domestic and international this field investigators widely problems of concern [referring to document: Bianca Heid, G ü nther Heinz Frischat, Peter Hellmold, Silicate enamels for stainless steel, XXI International EnamellersCongress, Shanghai, China, May, 2008; Peng Liu, Lianqi Wei, ShufengYe, Haiwei Xu, Yunfa Chen, Protecting stainless steel by glass coatingduring slab reheating, Surf.Coat.Technol., 205,3582 (2011)].Having its source in of problem, all there are wretched insufficiency in austenitic stainless steel and common vitreous enamel on heat coupling and chemical compatibility.This is that the former about 18 * 10 because aspect thermal expansivity
-6/ ℃, the latter is often＜10 * 10
-6/ ℃ (acid resistance is better usually, and thermal expansivity is less), and there is significant difference in the person, thereby will produce huge thermal stresses in the process of cooling; Aspect chemical compatibility, because the easy oxidation of stainless steel surface forms chromium oxide film in the high temperature enamel firing process, and the wettability of enamel and chromic oxide is relatively poor, thereby sticking power is lower.These two kinds of factor actings in conjunction cause fusing the friction pull height and have certain thickness enamel difficulty larger at stainless steel.There is the investigator to attempt to improve from improving the surface-treated methods such as Stainless Steel Watch surface roughness and preoxidation the tack of enamel, but the degree of improving is limited, still be not enough to reach industrial requirements [referring to document: F.S.Shieu, M.J.Deng, K.C.Lin, J.C.Wong, Effect of surfacepretreatments on the adherence of porcelain enamel to a type 316Lstainless steel, Journal of Materials Science, 34,5265 (1999)].Also there is the investigator to try hard to address this problem from the angle of the frit for porcelain enamel of refining high thermal expansion coefficient, although obtained the part success, but often run into other serious problems, such as the remarkable increase of the acid proof reduction of enamel and cost, cause it to be difficult to obtain widely industrial applications.
Except glass enamel industry, exist equally seal glass and stainless steel because of above-mentioned former thereby unmatched problem in stainless glass sealing field.Although adopt low-melting lead glass can obtain and stainless steel thermal matching preferably, lead is toxic heavy metal, can serious environment pollution [Wang Jun, He Feng, Deng Dawei, Tan Minghua, bismuthate glass and stainless wettability research, Wuhan University of Technology's journal, 32,60 (2010)].Thereby, in glass enamel and sealing technology field, be applicable to the particularly low-cost glass enamel prescription of austenitic stainless steel of stainless steel, still be badly in need of by industry member at present.
Summary of the invention
The objective of the invention is in order to solve current simple glass enamel and stainless steel hot coupling and interface compatibility is poor and the problem that comes off is implemented in the technique that fuses simple glass enamel on the various stainless steels, the spy provides a kind of stainless steel with low-cost glass enamel powder.
The invention provides a kind of stainless steel with low-cost glass enamel powder, it is characterized in that: described stainless steel is with being mixed with the ferro-aluminium powder in the low-cost glass enamel powder, the mass ratio of the incorporation of ferro-aluminium powder is 10%-90%, the mass ratio of the aluminium content of ferro-aluminium powder is 5%-65%, and the phase composite of ferro-aluminium must comprise Fe
3Al, FeAl, Fe
2Al
5And FeAl
3In at least a; The granular size of ferro-aluminium powder is 0.1-50 μ m, and the ferro-aluminium powder can mix as the mill addition of glass enamel powder common mill, in also can be the separately levigate glass enamel powder that then mixes milled.
For improving glaze layer intensity, further mix the lapis amiridis that massfraction is 5%-30% at stainless steel in low-cost glass enamel powder, the lapis amiridis granularity is 0.5-20 μ m, directly mixes use.
For improving glaze layer acid resistance, mix the silica powder that massfraction is 5%-30% at stainless steel in low-cost glass enamel powder, to use as surface layer, the silica powder granularity is 0.5-20 μ m.
For improving outward appearance, mixing massfraction at stainless steel in low-cost glass enamel powder is the 5%-20% mineral dye, uses as surface layer, and pigment comprises chromic oxide, cobalt oxide, titanium dioxide or ferric oxide, and granularity is 0.5-20 μ m.
The present invention by common stainless steel with low-cost glass enamel powder in interpolation ferro-aluminium powder, utilize ferro-aluminium high thermal expansion coefficient and highly active characteristic, solve the problem that simple glass enamel and stainless steel hot mate and interface compatibility is poor and come off, realized fusing at various stainless steels the technique of simple glass enamel.
Advantage of the present invention:
Stainless steel of the present invention has solved a difficult problem that is difficult to fuse simple glass enamel on the stainless steel with low-cost glass enamel powder, and can be undertaken by existing various glass enamel techniques.Raw material environmental protection, the wide material sources, cheap such as used ferro-aluminium powder of while, thereby cost is lower, is suitable for mass-producing and uses.
Embodiment
Embodiment 1
Present embodiment provides a kind of stainless steel with low-cost glass enamel powder, take the normal silicate glass enamel as example, mixes the ferro-aluminium powder of mass ratio 15% in this glass powder.The aluminium content of ferro-aluminium powder is 10%, and granular size is about 40 μ m.The phase composite of ferro-aluminium comprises Fe
3Al; The granular size of ferro-aluminium powder is 30 μ m, and the ferro-aluminium powder mixes common mill as the mill addition of glass enamel powder.
For improving glaze layer intensity, further mixing massfraction in low-cost glass enamel powder at stainless steel is 5% lapis amiridis, and the lapis amiridis granularity is 10 μ m, directly mixes use.
For improving glaze layer acid resistance, mixing massfraction in low-cost glass enamel powder at stainless steel is 5% silica powder, uses as surface layer, and the silica powder granularity is 0.5 μ m.
For improving outward appearance, mixing massfraction at stainless steel in low-cost glass enamel powder is 5% mineral dye, uses as surface layer, and pigment is chromic oxide, and granularity is 10 μ m.
After mixing, adopt spray, dip in or the mode such as brush is applied to workpiece surface, fire with the technique that fuses of this glass enamel powder, can obtain the coating of antistripping.Coatingsurface is more smooth, and glaze is bright aobvious.Compare with it, adopt same process, do not adding in the situation of this alloy powder, fuse layer and in process of cooling, then peel off fully.
Embodiment 2
Present embodiment provides a kind of stainless steel with low-cost glass enamel powder, take the normal silicate glass enamel as example, mixes the ferro-aluminium powder of mass ratio 50% in this glass powder.The aluminium content of ferro-aluminium powder is 30%, and granular size is about 20 μ m.The phase composite of ferro-aluminium comprises Fe
2Al
5The granular size of ferro-aluminium powder is 40 μ m, and the ferro-aluminium powder can mix as the mill addition of glass enamel powder common mill, in also can be the separately levigate glass enamel powder that then mixes milled.
For improving glaze layer intensity, further mixing massfraction in low-cost glass enamel powder at stainless steel is 20% lapis amiridis, and the lapis amiridis granularity is 10 μ m, directly mixes use.
For improving glaze layer acid resistance, mixing massfraction in low-cost glass enamel powder at stainless steel is 20% silica powder, uses as surface layer, and the silica powder granularity is 15 μ m.
For improving outward appearance, mixing massfraction at stainless steel in low-cost glass enamel powder is 10% mineral dye, uses as surface layer, and pigment is titanium dioxide, and granularity is 20 μ m.
After mixing, adopt spray, dip in or the mode such as brush is applied to workpiece surface, fire with the technique that fuses of this glass enamel powder, can obtain the coating of antistripping.The coatingsurface opposed flattened has certain glaze light.
Embodiment 3
Present embodiment provides a kind of stainless steel with low-cost glass enamel powder, equally take the normal silicate glass enamel as example, mixes the ferro-aluminium powder of mass ratio 60% in this glass powder.The aluminium content of ferro-aluminium powder is 60%, and granular size is about 1 μ m.The phase composite of ferro-aluminium comprises FeAl
3The granular size of ferro-aluminium powder is 50 μ m, and the ferro-aluminium powder can mix as the mill addition of glass enamel powder common mill.
For improving glaze layer intensity, further mixing massfraction in low-cost glass enamel powder at stainless steel is 30% lapis amiridis, and the lapis amiridis granularity is 20 μ m, directly mixes use.
For improving glaze layer acid resistance, mixing massfraction in low-cost glass enamel powder at stainless steel is 30% silica powder, uses as surface layer, and the silica powder granularity is 20 μ m.
For improving outward appearance, mixing massfraction at stainless steel in low-cost glass enamel powder is 20% mineral dye, uses as surface layer, and pigment is ferric oxide, and granularity is 20 μ m.
After mixing, adopt spray, dip in or the mode such as brush is applied to workpiece surface, fire with the technique that fuses of this glass enamel powder, can obtain the coating of antistripping.The coatingsurface opposed flattened, glaze light is less obvious.Carry out secondary by the prescription of embodiment 1 or 2 and fuse, can improve surface finish.
More than the specific embodiment of the present invention is described; but these explanations can not be understood to limit protection scope of the present invention; protection scope of the present invention is limited by the claims of enclosing, and any change on claim of the present invention basis all is protection scope of the present invention.
Claims (4)
1. a stainless steel is with low-cost glass enamel powder, it is characterized in that: described stainless steel is with being mixed with the ferro-aluminium powder in the low-cost glass enamel powder, the mass ratio of the incorporation of ferro-aluminium powder is 10%-90%, the mass ratio of the aluminium content of ferro-aluminium powder is 5%-65%, and the phase composite of ferro-aluminium must comprise Fe
3Al, FeAl, Fe
2Al
5And FeAl
3In at least a; The granular size of ferro-aluminium powder is 0.1-50 μ m.
According to the described stainless steel of claim 1 with low-cost glass enamel powder, it is characterized in that: for improving glaze layer intensity, further mix the lapis amiridis that massfraction is 5%-30% at stainless steel in low-cost glass enamel powder, the lapis amiridis granularity is 0.5-20 μ m, directly mixes use.
According to the described stainless steel of claim 1 with low-cost glass enamel powder, it is characterized in that: for improving glaze layer acid resistance, mix the silica powder that massfraction is 5%-30% at stainless steel in low-cost glass enamel powder, use as surface layer, the silica powder granularity is 0.5-20 μ m.
According to the described stainless steel of claim 1 with low-cost glass enamel powder, it is characterized in that: for improving outward appearance, mixing massfraction at stainless steel in low-cost glass enamel powder is the 5%-20% mineral dye, use as surface layer, pigment comprises chromic oxide, cobalt oxide, titanium dioxide or ferric oxide, and granularity is 0.5-20 μ m.
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|---|---|---|---|
| CN201210544619XA CN102976614A (en) | 2012-12-14 | 2012-12-14 | Low-cost glass enamel powder for stainless steel |
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|---|---|---|---|
| CN201210544619XA CN102976614A (en) | 2012-12-14 | 2012-12-14 | Low-cost glass enamel powder for stainless steel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105555728A (en) * | 2013-08-05 | 2016-05-04 | 滕内多拉内马克有限公司 | Enamel powder, metal component having a surface portion provided with an enamel coating and method for producing such a metal component |
| CN109891154A (en) * | 2016-11-25 | 2019-06-14 | 伊莱克斯家用电器股份公司 | There are the cavity, the cooking apparatus including cavity and the method for manufacturing cavity of enamel coating |
| CN114368245A (en) * | 2021-12-23 | 2022-04-19 | 张柳松 | Method for making stainless steel porcelain picture |
Citations (6)
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|---|---|---|---|---|
| JPS60197886A (en) * | 1984-03-16 | 1985-10-07 | Ngk Insulators Ltd | Enameled aluminum coated steel sheet |
| CN85104132A (en) * | 1985-05-30 | 1986-11-26 | Ti有限公司 | Enamel |
| CN1210097A (en) * | 1998-05-11 | 1999-03-10 | 山东工业大学 | Iron-aluminum intermetallic compound-aluminum oxide ceramic composite material and preparation thereof |
| CN1541967A (en) * | 2003-04-28 | 2004-11-03 | 北京市英发轻工技术开发公司 | Nanometer enamel (glaze) |
| CN1740395A (en) * | 2005-08-11 | 2006-03-01 | 崔洪芝 | Composite coating of ceramic-metal compound and its prepn |
| CN101239782A (en) * | 2007-02-05 | 2008-08-13 | 杨立俊 | High heat conductivity enamel paint and using method thereof |
-
2012
- 2012-12-14 CN CN201210544619XA patent/CN102976614A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60197886A (en) * | 1984-03-16 | 1985-10-07 | Ngk Insulators Ltd | Enameled aluminum coated steel sheet |
| CN85104132A (en) * | 1985-05-30 | 1986-11-26 | Ti有限公司 | Enamel |
| CN1210097A (en) * | 1998-05-11 | 1999-03-10 | 山东工业大学 | Iron-aluminum intermetallic compound-aluminum oxide ceramic composite material and preparation thereof |
| CN1541967A (en) * | 2003-04-28 | 2004-11-03 | 北京市英发轻工技术开发公司 | Nanometer enamel (glaze) |
| CN1740395A (en) * | 2005-08-11 | 2006-03-01 | 崔洪芝 | Composite coating of ceramic-metal compound and its prepn |
| CN101239782A (en) * | 2007-02-05 | 2008-08-13 | 杨立俊 | High heat conductivity enamel paint and using method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 邓世均: "《高性能陶瓷涂层》", 30 December 2004 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105555728A (en) * | 2013-08-05 | 2016-05-04 | 滕内多拉内马克有限公司 | Enamel powder, metal component having a surface portion provided with an enamel coating and method for producing such a metal component |
| US10047003B2 (en) | 2013-08-05 | 2018-08-14 | Nemak, S.A.B. De C.V. | Enamel powder, metal component having a surface section provided with an enamel coating and method for manufacturing such a metal component |
| CN109891154A (en) * | 2016-11-25 | 2019-06-14 | 伊莱克斯家用电器股份公司 | There are the cavity, the cooking apparatus including cavity and the method for manufacturing cavity of enamel coating |
| CN114368245A (en) * | 2021-12-23 | 2022-04-19 | 张柳松 | Method for making stainless steel porcelain picture |
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Application publication date: 20130320 |