CN100427438C - Electro-magnetic induction vortex heating composite coating having both far infrared transmission and reflection functions - Google Patents
Electro-magnetic induction vortex heating composite coating having both far infrared transmission and reflection functions Download PDFInfo
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- CN100427438C CN100427438C CNB2007101007578A CN200710100757A CN100427438C CN 100427438 C CN100427438 C CN 100427438C CN B2007101007578 A CNB2007101007578 A CN B2007101007578A CN 200710100757 A CN200710100757 A CN 200710100757A CN 100427438 C CN100427438 C CN 100427438C
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Abstract
The invention relates to a heating compound coating of electromagnetic induction vortex with the functions of both far infrared emission and reflection which including: subsequently coating the far infrared emission coating, electromagnetic induction vortex heating coating, far infrared reflection coating on the surface of the inorganic nonmetal material or printing to a transfer art paper by coating arts; then calcining to a compound coating with a dilatation coefficient of a(20-800)=2.6-4.0*10-6/DEG C, a thickness of 150-250 mum. The compound coating is used at the bottom of the cooker made of inorganic nonmetal material (such as glass and ceram and etc.), which induces heat conduction, heat radiation, heat reflection to obviously improve the heat availability and heat efficiency, especially suitable for cooking foods on the electromagnetic range or electromagnetic oven.
Description
Technical field
This invention relates to a kind of induction vortex heating composite coating that has far infrared emission and reflection function concurrently, this compound coating is applied in the bottom of ceramic (such as glass and pottery etc.) cooking cook ware, can make this class cooker be applicable to upward cooking food of electromagnetic induction furnace (as electromagnetic stove, electromagnetic oven etc.).
Background technology
At present, existing induction vortex heating coating on the market, its coating function singleness has only heating function.During electromagnetic induction furnace work the electromagnetic induction heating layer is sharply heated up, and the ceramic cooker is the poor conductor of heat, it is slow to conduct heat, thereby makes that electromagnetic induction heating layer temperature is too high, and high temperature oxidation speeds up, and influences work-ing life.The coating of Shi Yonging will be fused because temperature is too high in about about 100 hours in the market.Simultaneously, heat is radiated the electromagnetic induction furnace Inside coil and makes the regular deadlock of electromagnetic induction furnace, even coil is burnt out.These have not only expended effective heat energy, have influenced the raising of the thermo-efficiency of heating, simultaneously fragile electrical equipment.Also have in addition the mixture of ferrous metal powder and glass powder is made electromagnetic induction heating coating, but because the coefficient of expansion of this coating and stupalith differs greatly, under the bad working environments of rapid heat cycle repeatedly, coating is come off from the bottom of ceramic cooker, and because ferrous metal is in the hot environment for a long time, be easy to take place high temperature oxidation, make that the coating heating is unstable, influence its work-ing life intermittently.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art part, a kind of induction vortex heating composite coating that has far infrared emission and reflection function concurrently is provided.
The technical scheme that addresses the above problem that the present invention proposes is: a kind of induction vortex heating composite coating that has far infrared emission and reflection function concurrently, it is characterized in that: the employing coating processes is coated on far-infrared radiation coating, induction vortex heating coating, far-infrared reflection coating the ceramic surface successively or is printed as the transfer marble paper, and is wherein said:
The far-infrared radiation coating contains trichroite 7.5-15, transition metal oxide 35-42.5 by weight percentage, inorganic flux 50-60;
Far infrared electromagnetic inductive eddy-current heating coating is containing metal silver powder 82-91 by weight percentage, siderochrome Nickel Aluminium Alloy Powder 0-9, bismuth oxide 4-10, inorganic flux 2-6;
The far-infrared reflection coating contains crystal whisker of hexa potassium titanate 45-55 by weight percentage, inorganic flux 45-55;
And after coefficient of expansion a is made in roasting
(20-800)=(2.6-4.0) * 10
-6/ ℃, thickness is the compound coating of 150-250 micron.
Preferred the consisting of by weight percentage of described inorganic flux: Lithium Oxide 98min 2-4%, boron oxide 20-30%, silicon oxide 30-50%, aluminum oxide 4-10%, potassium oxide 3-6%, sodium oxide 2-5%, calcium oxide 4-9%, strontium oxide 2-6%.
Described transition metal oxide mainly is meant the high temperature synthetics of transition metal oxides such as iron cobalt chromium-copper, particularly consist of by weight percentage: ferric oxide 40-50%, cobalt oxide 15-25%, chromic oxide 30-40% and cupric oxide 2-4%, through 1300-1320 ℃ of calcining synthetic spinel type compound.
Described siderochrome Nickel Aluminium Alloy Powder only requires it is the common alloy powder based on ferro element.
The preparation method of the induction vortex heating composite coating that has far infrared emission and reflection function concurrently that the present invention relates to is: according to the component of inorganic flux after preparing burden, mixing, scorification under the high temperature in retort furnace, melt temperature is 1250 ℃-1350 ℃, fusion time is 2h, the frit that melt quenching is good grinds through pulverizing, and the inorganic flux of powder of making 250 mesh standard sieves is standby; Take by weighing high temperature synthetics, silver powder and siderochrome Nickel Aluminium Alloy Powder and the crystal whisker of hexa potassium titanate (K of trichroite and transition metal oxide then respectively according to the component weight percentage
2O6TiO
2) (fineness of every kind of powder must satisfy 250 mesh standard sieves), add inorganic flux of powder and/or an amount of bismuth oxide for preparing respectively in proportion, add an amount of stand linseed oil (Terpineol 350, glycerine, propylene glycol, dibutylester, turps, white oil of camphor) more respectively, be modulated into the suitable slurry of viscosity; Respectively far-infrared radiation coating, induction vortex heating coating and far infrared heat-reflective coating are adopted (spraying, brushing, blade coating, trans-printing or silk screen printing etc.) coating processes, be coated in by the order of far-infrared radiation coating, induction vortex heating coating, far infrared heat-reflective coating and make coating through pretreated ceramic surface or to shift marble paper, pass through 500-850 ℃ of roasting then, promptly make the induction vortex heating composite coating that has far infrared emission and reflection function concurrently.Stand linseed oil wherein (Terpineol 350, glycerine, propylene glycol, dibutylester, turps, white oil of camphor) is the thinner that is used for adjusting slurry viscosity, in oven dry, sintering process, thinner volatilizees totally fully, the people's amount (weight %) that adds of thinner is 40-60, be suitable for adopting coating processes such as spraying, brushing, blade coating, trans-printing or silk screen printing to be as the criterion with slurry viscosity, can choose wantonly wherein a kind ofly, also can mix use.
The remarkable advantage that this invention has compared with prior art: compound coating of the present invention not only produces thermal conduction by the induction vortex heating coating, can also pass through far-infrared radiation coating radiant heat energy, and because the effect of far-infrared reflection coating, the heat of back radiation can change direction and be converted to effective heat energy, make heat utilization efficiency and thermo-efficiency significantly improve like this, can not damage electrical equipment simultaneously because of thermal radiation.The present invention has used the low bulk flux and the low bulk cordierite material of lead-free and cadmium-free, make that the coefficient of expansion of the coefficient of expansion of under the prerequisite that does not influence heating efficiency coating and matrix is close, thereby can not break away from or coating be opened and do not split because of coating and matrix under the working conditions of frequent rapid heat cycle.The coating of this invention has obtained improving greatly work-ing life, long-term heatproof can reach 500 ℃, and the short-term heatproof can reach 600 ℃, can not fused because temperature is too high, also can not peeled off, this coating is coated in boils the life-span for a long time greater than 1000 hours on electromagnetic oven on the ceramic cooker.
Embodiment
Below in conjunction with the embodiment the present invention that explains: (technical indicator is seen tabulation)
Embodiment 1
Be as the criterion with 1 kilogram of material, the far-infrared radiation coating contains (weight is formed %) trichroite 7.5, the high temperature synthetics 42.5 of transition metal oxide, inorganic flux 50; The induction vortex heating coating contains (weight is formed %) silver powder 82, is basic siderochrome Nickel Aluminium Alloy Powder 9, bismuth oxide 6, inorganic flux 3 with ferro element; The far-infrared reflection coating contains (weight is formed %) crystal whisker of hexa potassium titanate 50, inorganic flux 50.Transition metal oxide (weight form %) wherein: ferric oxide 45%, cobalt oxide 20%, chromic oxide 33% and cupric oxide 2%; Inorganic flux (weight is formed %): Lithium Oxide 98min 3%, boron oxide 25%, silicon oxide 47%, aluminum oxide 7%, potassium oxide 5%, sodium oxide 3%, calcium oxide 6%, strontium oxide 4%.
Embodiment 2
Be as the criterion with 1 kilogram of material, the far-infrared radiation coating contains (weight is formed %) trichroite 15, the high temperature synthetics 35 of transition metal oxides such as iron cobalt chromium-copper, inorganic flux 50; The induction vortex heating coating contains (weight is formed %) silver powder 91, is basic siderochrome Nickel Aluminium Alloy Powder 1, bismuth oxide 6, inorganic flux 2 with ferro element; The far infrared heat-reflective coating contains (weight is formed %) crystal whisker of hexa potassium titanate 60, inorganic flux 40.Transition metal oxide (weight form %) wherein: ferric oxide 45%, cobalt oxide 20%, chromic oxide 33% and cupric oxide 2%; Inorganic flux (weight is formed %): Lithium Oxide 98min 3%, boron oxide 25%, silicon oxide 47%, aluminum oxide 7%, potassium oxide 5%, sodium oxide 3%, calcium oxide 6%, strontium oxide 4%.
Embodiment 3
Be as the criterion with 1 kilogram of material, the far-infrared radiation coating contains (weight is formed %) trichroite 10, the high temperature synthetics 45 of transition metal oxides such as iron cobalt chromium-copper, inorganic flux 45; The induction vortex heating coating contains (weight is formed %) silver powder 85, is basic siderochrome Nickel Aluminium Alloy Powder 5, bismuth oxide 6, inorganic flux 4 with ferro element; The far infrared heat-reflective coating contains (weight is formed %) crystal whisker of hexa potassium titanate 55, inorganic flux 45.Transition metal oxide (weight form %) wherein: ferric oxide 45%, cobalt oxide 20%, chromic oxide 33% and cupric oxide 2%; Inorganic flux (weight is formed %): Lithium Oxide 98min 3%, boron oxide 25%, silicon oxide 47%, aluminum oxide 7%, potassium oxide 5%, sodium oxide 3%, calcium oxide 6%, strontium oxide 4%.
Embodiment 4
Be as the criterion with 1 kilogram of material, the far-infrared radiation coating contains (weight is formed %) trichroite 12, the high temperature synthetics 43 of transition metal oxides such as iron cobalt chromium-copper, inorganic flux 45; The induction vortex heating coating contains (weight is formed %) silver powder 87, is basic siderochrome Nickel Aluminium Alloy Powder 4, bismuth oxide 6, inorganic flux 3 with ferro element; The far infrared heat-reflective coating contains (weight is formed %) crystal whisker of hexa potassium titanate 45, inorganic flux 55.Transition metal oxide (weight form %) wherein: ferric oxide 45%, cobalt oxide 20%, chromic oxide 33% and cupric oxide 2%; Inorganic flux (weight is formed %): Lithium Oxide 98min 3%, boron oxide 25%, silicon oxide 47%, aluminum oxide 7%, potassium oxide 5%, sodium oxide 3%, calcium oxide 6%, strontium oxide 4%.
Embodiment 5
Be as the criterion with 1 kilogram of material, the far-infrared radiation coating contains (weight is formed %) trichroite 14, the high temperature synthetics 44 of transition metal oxides such as iron cobalt chromium-copper, inorganic flux 42; The induction vortex heating coating contains (weight is formed %) silver powder 89, is basic siderochrome Nickel Aluminium Alloy Powder 3, bismuth oxide 6, inorganic flux 2 with ferro element; The far infrared heat-reflective coating contains (weight is formed %) crystal whisker of hexa potassium titanate 50, inorganic flux 50.Transition metal oxide (weight form %) wherein: ferric oxide 45%, cobalt oxide 20%, chromic oxide 33% and cupric oxide 2%; Inorganic flux (weight is formed %): Lithium Oxide 98min 3%, boron oxide 25%, silicon oxide 47%, aluminum oxide 7%, potassium oxide 5%, sodium oxide 3%, calcium oxide 6%, strontium oxide 4%.
Each compound coating technical indicator of above embodiment gained is listed as follows:
In the table, the coefficient of expansion is to be measured by the silica tube thermal dilatometer, and radiant ratio and reflectivity are to be measured by IR-type dual-band infrared emissivity measurement instrument, and coat-thickness is to be measured by MPOR-dual-purpose type coated layer thickness gauge.
Claims (2)
1, a kind of induction vortex heating composite coating that has far infrared emission and reflection function concurrently, it is characterized in that: the employing coating processes is coated on far-infrared radiation coating, induction vortex heating coating, far-infrared reflection coating the ceramic surface successively or is printed as the transfer marble paper, and is wherein said:
The far-infrared radiation coating contains trichroite 7.5-15, transition metal oxide 35-42.5 by weight percentage, inorganic flux 50-60;
Far infrared electromagnetic inductive eddy-current heating coating is containing metal silver powder 82-91 by weight percentage, siderochrome Nickel Aluminium Alloy Powder 0-9, bismuth oxide 4-10, inorganic flux 2-6;
The far-infrared reflection coating contains crystal whisker of hexa potassium titanate 45-55 by weight percentage, inorganic flux 45-55;
Wherein said inorganic flux is made up of Lithium Oxide 98min, boron oxide, silicon oxide, aluminum oxide, potassium oxide, sodium oxide, calcium oxide, strontium oxide;
And after coefficient of expansion a is made in roasting
(20-800)=(2.6-4.0) * 10
-6/ ℃, thickness is the compound coating of 150-250 micron.
2, according to the described compound coating of claim 1, it is characterized in that: described transition metal oxide is to consist of by weight percentage: ferric oxide 40-50%, cobalt oxide 15-25%, chromic oxide 30-40% and cupric oxide 2-4%, and through 1300-1320 ℃ of calcining synthetic spinel type compound.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101007578A CN100427438C (en) | 2007-04-17 | 2007-04-17 | Electro-magnetic induction vortex heating composite coating having both far infrared transmission and reflection functions |
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|---|---|---|---|
| CNB2007101007578A CN100427438C (en) | 2007-04-17 | 2007-04-17 | Electro-magnetic induction vortex heating composite coating having both far infrared transmission and reflection functions |
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| CN100427438C true CN100427438C (en) | 2008-10-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104774040A (en) * | 2014-01-10 | 2015-07-15 | 曹小松 | Composite coat material with magnetothermal effect, and preparation method thereof |
| CN106518167B (en) * | 2016-10-21 | 2019-03-22 | 景德镇陶瓷大学 | A kind of pottery subbing layer materials and its preparation method and application strengthened function with far infrared |
| CN109786493B (en) * | 2019-01-03 | 2020-11-13 | 景德镇陶瓷大学 | High-adhesion ceramic and glass reflective coating slurry and preparation method and application thereof |
| CN110856298B (en) * | 2019-11-22 | 2022-05-13 | 湖南嘉业达电子有限公司 | Electromagnetic induction heating film capable of controlling temperature automatically and preparation method thereof |
| CN112383980A (en) * | 2020-07-16 | 2021-02-19 | 湖北中烟工业有限责任公司 | Composite heating material and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1513588A (en) * | 2003-08-22 | 2004-07-21 | 景德镇陶瓷学院 | Modified ceramic microfiltering membrane |
| CN1901989A (en) * | 2003-12-31 | 2007-01-24 | 康宁股份有限公司 | Ceramic structures having hydrophobic coatings |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1513588A (en) * | 2003-08-22 | 2004-07-21 | 景德镇陶瓷学院 | Modified ceramic microfiltering membrane |
| CN1901989A (en) * | 2003-12-31 | 2007-01-24 | 康宁股份有限公司 | Ceramic structures having hydrophobic coatings |
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