CN102628168A - Making technology and coating formulas of colorful enamel gas stove surfaces - Google Patents
Making technology and coating formulas of colorful enamel gas stove surfaces Download PDFInfo
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- CN102628168A CN102628168A CN2012100747487A CN201210074748A CN102628168A CN 102628168 A CN102628168 A CN 102628168A CN 2012100747487 A CN2012100747487 A CN 2012100747487A CN 201210074748 A CN201210074748 A CN 201210074748A CN 102628168 A CN102628168 A CN 102628168A
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- dry powder
- kitchen range
- heating apparatus
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- 210000003298 dental enamel Anatomy 0.000 title claims abstract description 48
- 239000008199 coating composition Substances 0.000 title claims abstract description 9
- 238000005516 engineering process Methods 0.000 title abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 42
- 239000000843 powder Substances 0.000 claims abstract description 36
- 230000000694 effects Effects 0.000 claims abstract description 25
- 238000005245 sintering Methods 0.000 claims description 58
- 238000010438 heat treatment Methods 0.000 claims description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000007921 spray Substances 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 238000002203 pretreatment Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 239000004927 clay Substances 0.000 claims description 10
- 229940098458 powder spray Drugs 0.000 claims description 10
- 235000010288 sodium nitrite Nutrition 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000002320 enamel (paints) Substances 0.000 claims description 9
- 239000001054 red pigment Substances 0.000 claims description 8
- 238000010304 firing Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000037 vitreous enamel Substances 0.000 claims description 7
- 239000001053 orange pigment Substances 0.000 claims description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 241000675108 Citrus tangerina Species 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000001056 green pigment Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 5
- 239000010935 stainless steel Substances 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000004534 enameling Methods 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 abstract description 2
- 235000012730 carminic acid Nutrition 0.000 abstract 1
- 239000003086 colorant Substances 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 238000007781 pre-processing Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 235000019628 coolness Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a making technology and coating formulas of colorful enamel gas stove surfaces. The making technology comprises the steps of preprocessing, and four enameling and four burning, and formulas of a colorized glaze comprise a green formula, an orange-colored formula, a carmine formula, a bright red formula, a nonluminous orange-colored formula and a pearlescent effect coating formula. According to the invention, static dry powder and wet spraying are mixed and the four enameling and four burning is carried out to produce the enamel gas cooker surfaces with various colors and solve problems of deformation, enamel cracking and the like of traditional enamel stove surfaces, so the product grade is greatly improved. The enamel stove surfaces made in the invention have the characteristics of attractive appearance, abundant color and pearlescent effect possessing; compared with stainless steel stove surfaces, the enamel stove surfaces have the advantages of easy cleaning, scratch resisting and low cost; and compared with glass stove surfaces, the enamel stove surfaces have the advantages of no generation of an explosion phenomenon, and substantial improvement of the safety performance.
Description
Technical field:
The present invention relates to a kind of manufacture craft of gas-cooker face, especially relate to a kind of manufacture craft of the colorful porcelain enamel gas-cooker face with pearl effect and the coating formula of enamel kitchen range face.
Background technology:
The gas-cooker face of main flow is main with stainless steel and two kinds of materials of glass mainly in the market.Glass gas-cooker face is having certain advantage aspect the easy spatter property of product, but because there is certain self-destruction rate in the characteristic of glass itself, therefore has very big potential safety hazard; Stainless steel gas-cooker face is compared glass gas-cooker face, though do not have the security hidden trouble of self-destruction, exist cost high, be difficult for cleaning, shortcoming such as scrape resistant not.And traditional enamel product modes such as ward off of soaking that adopt cause enamel layer in uneven thickness more, occur problems such as orange peel, pin hole, sudden and violent porcelain easily; And traditional enamel kitchen range face texture is relatively poor, and color is single, and the class of goods is on the low side.At present mostly on the market enamel gas-cooker face is wet shot or electrostatic dry powder enameling process, is generally one and wards off one and burn or two ward off two burnings.If sintering number increases, will produce phenomenons such as distortion, sudden and violent porcelain.But, therefore have only two kinds of products of black and white in the market because colored enamel kitchen range face needs at least three sintering.
Summary of the invention:
The invention provides a kind of manufacture craft of colorful porcelain enamel gas-cooker face and the coating formula of enamel kitchen range face, to solve the weak point of above-mentioned existing stainless steel kitchen range face, glass kitchen range face and traditional enamel kitchen range face.
In order to solve above technical problem, technical scheme of the present invention is: a kind of manufacture craft of colorful porcelain enamel gas-cooker face is characterized in that: making step is:
I. pre-treatment:
The mainboard of the right kitchen range face of enamel is selected the special-purpose mild steel plate of enamel for use, removes the grease of surface of steel plate;
Detailed process is: steel plate kitchen range face is hung on the conveyer chain, follow conveyer chain and get into spray chamber, respectively through 2 alkaline defatting agent sprays, dry after 3 times the washing spray is handled, pre-treatment finishes;
II. four ward off four firing techniques (color pearl effect)
1 wards off, i.e. the ground-coat enamel coating:
Steel plate after pre-treatment finished turns linked on the conveyer chain of electrostatic dry powder spraying equipment, follows conveyer chain and gets into electrostatic dry powder spray room, and spray gun ejection dry powder acts on surface of steel plate absorption one deck ground-coat enamel dry powder, ground-coat enamel thickness: 50-150 μ m through electrostatic;
1. burn:
1 steel plate warded off after the spraying is turned linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into the High Temperature Furnaces Heating Apparatus sintering with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute;
2 ward off, promptly white cover-coat enamel coating:
The kitchen range face that 1 burning sintering cooling is finished turns linked on the conveyer chain of electrostatic dry powder spraying equipment; Follow conveyer chain and get into electrostatic dry powder spray room; Spray gun ejection dry powder acts on surface of steel plate absorption one deck ground-coat enamel dry powder through electrostatic, and white cover-coat enamel thickness is: 50-150 μ m;
2 burn:
The 2 kitchen range faces warded off after the spraying are turned linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute;
3 ward off, i.e. coloured coating:
The kitchen range face that 2 burning sintering are cooled off after finishing turns linked on the conveyer chain of wet spray equipment, at the colored glaze of white cover coat surface spraying one deck, dries coat-thickness then: 100-250 μ m;
3 burn:
Ward off the dried kitchen range face of spraying with 3 and turn linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute;
4 ward off, i.e. the pearl effect coating:
The kitchen range face that 3 burning sintering coolings are finished turns linked on the conveyer chain of wet spray equipment, at coloured coating surface spraying pearl effect glaze, dries then, and coat-thickness is: 40-100 μ m;
4 burn:
Ward off the dried kitchen range face of spraying with 4 and turn linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute.
The prescription that colored glaze is adopted is:
Green formula is: clear frit 50～150g, clay 5～15g, wilkinite 0～1g, Sodium Nitrite 0.1～1g, zirconium white 2～6g, green pigment 0.1～1.2g, xanthein 0.2～0.5g, water 50g;
Orange prescription: clear frit 50～150g, clay 5～15g, Sodium Nitrite 0.1～1g, zirconium white 2～6g, orange pigment 0.1～1.2g, xanthein 0.2～0.5g, water 50g;
Scarlet prescription: clear frit 50～150g, clay 5～15g, Sodium Nitrite 0.1～1g, zirconium white 2～6g, bright red pigment 0.1～1.2g, large red pigment 0.2～0.5g, water 50g;
Bright red prescription: clear frit 50～150g, clay 5～15g, Sodium Nitrite 0.1～1g, zirconium white 2～6g, orange pigment 0.1～1.2g, bright red pigment 0.2～0.5g, large red pigment 0.1～0.4g, water 50g;
Unglazed tangerine prescription: clear frit 50～150g, clay 5～15g, wilkinite 0～1g, Sodium Nitrite 0.1～1g, zirconium white 2～6g, orange pigment 0.1～1.2g, xanthein 0.2～0.5g, alumina powder 6～12g, water 50g.
The pearl effect coating, the mass percent prescription is: marzacotto 98%～99.5%, pearlescence: 0.5%～2%.
The present invention has adopted electrostatic dry powder and wet shot to mix, and wards off four firing techniques through four, realizes the production of versicolor enamel gas-cooker face, has also solved problems such as the distortion of traditional enamel kitchen range face, sudden and violent porcelain, has put on the class of product greatly.The enamel gas-cooker face that the present invention makes, outward appearance is beautiful, rich color, and have pearl effect, than stainless steel kitchen range face, it is lower that this kitchen range face is prone to cleaning, scrape resistant and cost; Than glass kitchen range face, can not produce the explosion phenomenon, safety performance improves greatly.
Embodiment:
Operation steps of the present invention is: at first carry out the spraying of ground-coat enamel and white cover-coat enamel with the electrostatic dry powder spraying equipment; Equipment is produced for Switzerland IGEMA; Detailed process: use conveyor chain that steel plate kitchen range face is delivered into electrostatic dry powder spray room; Spray gun ejection glaze dry powder, on steel plate, spraying process finishes through electrostatic adhesion.The work in-process that will spray are then transferred to the conveyor chain of sintering oven, and work in-process get into the electrically heated High Temperature Furnaces Heating Apparatus and carry out sintering, and sintering cooling back gets into next process.This process repeats twice (electrostatic dry powder spraying).Change chromatic spray painting and pearl effect spray treatment then over to, this two step is used wet shot, and promptly employed glaze is the water-based glaze slip, and detailed process is the same with last glaze material spraying, and it is the same as on the product surface that glaze slip is similar to paint, carries out sintering then; So far whole procedure is made and is finished.The making difficult point of enamel kitchen range face is the glaze processing; The present invention mainly adopts four to ward off four firing techniques, and starting material carry out sintering through getting into the ground-coat enamel spraying after the pre-treatment after the spraying; Finish ground-coat enamel and handle, so order is handled through face, color processing and last pearl effect respectively and is obtained finished product.The concrete operations step is following:
Pre-treatment:
The mainboard of the right kitchen range face of enamel is selected steel plate for use, and the main purpose of pre-treatment is for degreasing, removes the grease of surface of steel plate.
Detailed process is: steel plate kitchen range face is hung on the conveyer chain, follow conveyer chain and get into spray chamber, respectively through 2 alkaline defatting agent sprays, dry after 3 times the washing spray is handled, pre-treatment finishes.
Embodiment one:
Four ward off four firing techniques (color pearl effect):
1 wards off (ground-coat enamel coating):
Steel plate after pre-treatment finished turns linked on the conveyer chain of electrostatic dry powder spraying equipment, follows conveyer chain and gets into electrostatic dry powder spray room, and spray gun ejection dry powder acts on surface of steel plate absorption one deck ground-coat enamel dry powder, ground-coat enamel thickness: 50-150 μ m through electrostatic.
1 burns:
1 steel plate warded off after the spraying is turned linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into the High Temperature Furnaces Heating Apparatus sintering with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute.
2 ward off (white cover-coat enamel coating):
The kitchen range face that 1 burning sintering cooling is finished turns linked on the conveyer chain of electrostatic dry powder spraying equipment; Follow conveyer chain and get into electrostatic dry powder spray room; Spray gun ejection dry powder acts on surface of steel plate absorption one deck ground-coat enamel dry powder through electrostatic, and white cover-coat enamel thickness is: 50-150 μ m.
2 burn:
The 2 kitchen range faces warded off after the spraying are turned linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute.
3 ward off (coloured coating):
The kitchen range face that 2 burning sintering are cooled off after finishing turns linked on the conveyer chain of wet spray equipment, at the colored glaze of white cover coat surface spraying one deck, dries coat-thickness then: 100-250 μ m.
3 burn:
Ward off the dried kitchen range face of spraying with 3 and turn linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute.
4 ward off (pearl effect coating):
The kitchen range face that 3 burning sintering coolings are finished turns linked on the conveyer chain of wet spray equipment, at coloured coating surface spraying pearl effect glaze, dries then, and coat-thickness is: 40-100 μ m.
4 burn:
Ward off the dried kitchen range face of spraying with 4 and turn linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute.
Embodiment two:
2 ward off 2 firing techniques (black pearl effect):
1 wards off, i.e. the ground-coat enamel coating:
Steel plate after pre-treatment finished turns linked on the conveyer chain of electrostatic dry powder spraying equipment, follows conveyer chain and gets into electrostatic dry powder spray room, and spray gun ejection dry powder acts on surface of steel plate absorption one deck black ground-coat enamel dry powder, ground-coat enamel thickness: 50-150 μ m through electrostatic;
1 burns:
1 steel plate warded off after the spraying is turned linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into the High Temperature Furnaces Heating Apparatus sintering with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute;
2 ward off, i.e. the pearl effect coating:
The kitchen range face that 1 burning sintering cooling is finished turns linked on the conveyer chain of wet spray equipment, at black coating surface spraying pearl effect glaze, dries then, and coat-thickness is: 40-100 μ m;
2 burn:
Ward off the dried kitchen range face of spraying with 2 and turn linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute.Can obtain black pearl effect enamel kitchen range face.
Embodiment three:
3 ward off 3 firing techniques (white pearlescent effect):
1 wards off, i.e. the ground-coat enamel coating:
Steel plate after pre-treatment finished turns linked on the conveyer chain of electrostatic dry powder spraying equipment, follows conveyer chain and gets into electrostatic dry powder spray room, and spray gun ejection dry powder acts on surface of steel plate absorption one deck ground-coat enamel dry powder, ground-coat enamel thickness: 50-150 μ m through electrostatic;
1. burn:
1 steel plate warded off after the spraying is turned linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into the High Temperature Furnaces Heating Apparatus sintering with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute;
2 ward off, promptly white cover-coat enamel coating:
The kitchen range face that 1 burning sintering cooling is finished turns linked on the conveyer chain of electrostatic dry powder spraying equipment; Follow conveyer chain and get into electrostatic dry powder spray room; Spray gun ejection dry powder acts on surface of steel plate absorption one deck ground-coat enamel dry powder through electrostatic, and white cover-coat enamel thickness is: 50-150 μ m;
2 burn:
The 2 kitchen range faces warded off after the spraying are turned linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute;
3 ward off, i.e. the pearl effect coating:
The kitchen range face that 2 burning sintering coolings are finished turns linked on the conveyer chain of wet spray equipment, at black coating surface spraying pearl effect glaze, dries then, and coat-thickness is: 40-100 μ m;
3 burn:
Ward off the dried kitchen range face of spraying with 3 and turn linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute.Promptly obtain white pearlescent effect enamel gas-cooker face.
The coloured glaze material formula is following:
The pearl effect coating formula is (mass percent) as follows:
Marzacotto (pre-grinding powder, add water then can directly use): 98%-99.5%.
Pearlescence: 0.5%-2%.
Claims (3)
1. the manufacture craft of a colorful porcelain enamel gas-cooker face, it is characterized in that: making step is:
I. pre-treatment:
The mainboard of the right kitchen range face of enamel is selected steel plate for use, removes the grease of surface of steel plate;
Detailed process is: steel plate kitchen range face is hung on the conveyer chain, follow conveyer chain and get into spray chamber, respectively through 2 alkaline defatting agent sprays, dry after 3 times the washing spray is handled, pre-treatment finishes;
II. four ward off four firing techniques
(1) ward off, i.e. the ground-coat enamel coating:
Steel plate after pre-treatment finished turns linked on the conveyer chain of electrostatic dry powder spraying equipment, follows conveyer chain and gets into electrostatic dry powder spray room, and spray gun ejection dry powder acts on surface of steel plate absorption one deck ground-coat enamel dry powder, ground-coat enamel thickness: 50-150 μ m through electrostatic;
(1) burn:
The steel plate that (1) is warded off after the spraying turns linked to the High Temperature Furnaces Heating Apparatus conveyor chain, gets into the High Temperature Furnaces Heating Apparatus sintering with conveyor chain, and sintering temperature is: 730-830 ℃, and sintering time 3-5 minute;
(2) ward off promptly white cover-coat enamel coating:
The kitchen range face that the cooling of (1) burning sintering is finished turns linked on the conveyer chain of electrostatic dry powder spraying equipment; Follow conveyer chain and get into electrostatic dry powder spray room; Spray gun ejection dry powder acts on surface of steel plate absorption one deck ground-coat enamel dry powder through electrostatic, and white cover-coat enamel thickness is: 50-150 μ m;
(2) burn:
The kitchen range face that (2) are warded off after the spraying turns linked to the High Temperature Furnaces Heating Apparatus conveyor chain, gets into High Temperature Furnaces Heating Apparatus with conveyor chain, and sintering temperature is: 730-830 ℃, and sintering time 3-5 minute;
(3) ward off, i.e. coloured coating:
The kitchen range face that (2) are burnt after the sintering cooling finishes turns linked on the conveyer chain of wet spray equipment, at the colored glaze of white cover coat surface spraying one deck, dries coat-thickness then: 100-250 μ m;
(3) burn:
The dried kitchen range face of spraying is warded off in (3) turn linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute;
(4) ward off, i.e. the pearl effect coating:
The kitchen range face that the cooling of (3) burning sintering is finished turns linked on the conveyer chain of wet spray equipment, at coloured coating surface spraying pearl effect glaze, dries then, and coat-thickness is: 40-100 μ m;
(4) burn:
The dried kitchen range face of spraying is warded off in (4) turn linked to the High Temperature Furnaces Heating Apparatus conveyor chain, get into High Temperature Furnaces Heating Apparatus with conveyor chain, sintering temperature is: 730-830 ℃, and sintering time 3-5 minute.
2. the coating formula of a colorful porcelain enamel gas-cooker face, it is characterized in that: the prescription that colored glaze adopted is:
Green formula is: clear frit 50～150g, clay 5～15g, wilkinite 0～1g, Sodium Nitrite 0.1～1g, zirconium white 2～6g, green pigment 0.1～1.2g, xanthein 0.2～0.5g, water 50g;
Orange prescription: clear frit 50～150g, clay 5～15g, Sodium Nitrite 0.1～1g, zirconium white 2～6g, orange pigment 0.1～1.2g, xanthein 0.2～0.5g, water 50g;
Scarlet prescription: clear frit 50～150g, clay 5～15g, Sodium Nitrite 0.1～1g, zirconium white 2～6g, bright red pigment 0.1～1.2g, large red pigment 0.2～0.5g, water 50g;
Bright red prescription: clear frit 50～150g, clay 5～15g, Sodium Nitrite 0.1～1g, zirconium white 2～6g, orange pigment 0.1～1.2g, bright red pigment 0.2～0.5g, large red pigment 0.1～0.4g, water 50g;
Unglazed tangerine prescription: clear frit 50～150g, clay 5～15g, wilkinite 0～1g, Sodium Nitrite 0.1～1g, zirconium white 2～6g, orange pigment 0.1～1.2g, xanthein 0.2～0.5g, alumina powder 6～12g, water 50g.
3. the coating formula of a colorful porcelain enamel gas-cooker face, it is characterized in that: the pearl effect coating, the mass percent prescription is: marzacotto 98%～99.5%, pearlescence: 0.5%～2%.
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| WO2017117889A1 (en) * | 2016-01-05 | 2017-07-13 | 广东美的厨房电器制造有限公司 | Enameled article and preparation method thereof |
| CN109549545A (en) * | 2019-01-17 | 2019-04-02 | 佛山市昂达电器有限公司 | The preparation method and electric heating towel rack of electric heating towel rack |
| CN109970344A (en) * | 2019-05-14 | 2019-07-05 | 长沙龙之根文化用品有限公司 | A kind of crystalline substance porcelain wood chopsticks and its processing method |
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| CN111139479A (en) * | 2020-01-02 | 2020-05-12 | 杭州戴乐搪瓷有限公司 | Enameling process for matt color enamelware |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017117889A1 (en) * | 2016-01-05 | 2017-07-13 | 广东美的厨房电器制造有限公司 | Enameled article and preparation method thereof |
| CN109549545A (en) * | 2019-01-17 | 2019-04-02 | 佛山市昂达电器有限公司 | The preparation method and electric heating towel rack of electric heating towel rack |
| CN110027269A (en) * | 2019-03-21 | 2019-07-19 | 杭州方泰搪瓷制品有限公司 | A kind of imitative fried dough twist stone enamel decoration board and preparation method thereof |
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| CN114215839B (en) * | 2021-11-29 | 2024-12-10 | 格力电器（武汉）有限公司 | Inner liner riveting structure and manufacturing method thereof and steaming and baking machine |
| CN117265534A (en) * | 2023-09-21 | 2023-12-22 | 浙江开尔新材料股份有限公司 | Preparation method of colorful enamel plate bottom plate |
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