CN101077274A - High heat-resisting ceramic cooking cook ware suitable for electromagnetic induction furnace - Google Patents
High heat-resisting ceramic cooking cook ware suitable for electromagnetic induction furnace Download PDFInfo
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- CN101077274A CN101077274A CN 200710100759 CN200710100759A CN101077274A CN 101077274 A CN101077274 A CN 101077274A CN 200710100759 CN200710100759 CN 200710100759 CN 200710100759 A CN200710100759 A CN 200710100759A CN 101077274 A CN101077274 A CN 101077274A
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Abstract
The present invention discloses one kind of high temperature resistant ceramic cooker suitable for use in electromagnetic induction furnace. The high temperature resistant ceramic cooker is produced with the main materials, including lithium-containing mineral material, quartz, kaolin, etc, and through grinding, mixing, forming, drying, glazing and high temperature baking to obtain the ceramic body; coating far infrared radiation layer, electromagnetically inducing eddy flow heating layer and far infrared reflecting layer to the bottom of the ceramic body; and roasting. It has high heat stability, no cracking even in no-water cooking state, high heat utilization rate and long service life. It is especially suitable for cooking in electromagnetic induction furnace.
Description
Technical field
The present invention relates to a kind of high heat-resisting ceramic cooking cook ware that is applicable to electromagnetic induction furnace, can be on electromagnetic induction furnace cooking food.
Background technology
The cooking cook ware used always of people has two kinds up to now: a kind of is metallic article, and with stainless steel, castiron, it can use on electromagnetic induction furnace electrical equipment, but it is oxidized easily, and heat-insulating property is very poor, and cooked off flavour is not delicious yet; Another kind is common Inorganic Non-metallic Materials cooker (as pottery, glass etc.), but it can not use on electromagnetic induction furnace, for addressing this problem, people have invented a kind of pottery pot, this pot increased the whole bottom for irony of one deck as magnetic layer in plane pottery bottom, and fills up glaze make above-mentioned two-layer bonding between ceramic layer bottom and irony layer bottom.But still there is following shortcoming in above-mentioned pottery pot: 1, because the pottery bottom is very big with whole bottom thermal expansion coefficient difference for irony, after the bottom of a pan is heated or cools off, monoblock iron plate is because the stress that distortion produces can be concentrated the accumulation stack, and concentrate on certain local shear stress that produces between two-layer, thereby through repeatedly using both disengagings gradually easily of pottery bottom, back and irony bottom.2, the irony bottom is directly exposed in the air, the back oxidation easily, rotten of being heated.At application number is in the Chinese invention patent application of 200310103236.X, a kind of " ceramic pot that is used for electromagnetic oven " disclosed, this ceramic pot is with the common iron film of ceramic material cooker metallizing it to be worked on electromagnetic induction furnace, but its non-oxidizability is poor, poor work stability, the thermal efficiency is lower, and bursts easily.Because the heat endurance of this ceramic cooking cook ware is good inadequately, work under dry-fire condition, ceramic cooker stands rapid heat cycle and very easily bursts, and also can burst when perhaps the bottom of a pan has burning to exist, so this ceramic cooker can only be used for Baoshang, cooking methods such as can not be used for frying, fry in shallow oil, explode.Now make the consumption market of this cooker be restricted in these reasons.
Summary of the invention
The present invention be directed to above prior art weak point, development and Design a kind of Inorganic Non-metallic Materials cooking cook ware that is applicable to electromagnetic induction furnace with high heat-resistant quality, its low cost of manufacture is suitable for industrialization production.
Technical scheme of the present invention is: a kind of high heat-resisting ceramic cooking cook ware that is applicable to electromagnetic induction furnace, comprise ceramic body and composite coating, and it is characterized in that: ceramic body is the following proportioning with by weight percentage:
Spodumene 30-40%
Lithium feldspar 30-40%
Eucryptite 0-16%
Quartzy 0-15%
Kaolin 25-35%
Calcination of talc 1-5%
For raw material is formed, form through high-temperature firing after ground and mixed, moulding, the dry glazing; Then adopt coating processes, successively will be by the high temperature synthetic of cordierite, iron cobalt chromium-copper transition metal oxide and the far infrared radiation coating that inorganic flux forms, the induction vortex heating coating that is formed by silver powder, siderochrome Nickel Aluminium Alloy Powder, bismuth oxide and inorganic flux based on ferro element and be coated on the ceramic body bottom by the far-infrared reflection coating that crystal whisker of hexa potassium titanate and inorganic flux form obtains goods through roasting.
Described inorganic flux consisting of by weight percentage: lithia 2-4%, boron oxide 20-30%, silica 30-50%, aluminium oxide 4-10%, potassium oxide 3-6%, sodium oxide molybdena 2-5%, calcium oxide 4-9%, strontium oxide strontia 2-6%.
The high temperature synthetic of described iron cobalt chromium-copper transition metal oxide is to consist of by weight percentage: iron oxide 40-50%, cobalt oxide 15-25%, chromium oxide 30-40% and cupric oxide 2-4%, and through the 1300-1320 ℃ of spinel-type compound that calcining is synthetic.
The preparation method of this invention is:
1, the preparation of ceramic body: it is to contain lithium minerals raw material (as spodumene, petalite, eucryptite etc.) by high-grade that the raw material of this body is formed, quartzy, compositions such as kaolin, it contains (weight %): contain lithium minerals raw material spodumene 30-40%, lithium feldspar 30-40%, eucryptite 0-16%, quartzy 0-15, kaolin 25-35, calcination of talc 1-5; Take by weighing raw materials such as containing lithium minerals raw material, quartz, kaolin, calcination of talc according to the component weight percentage, mixed levigate in 12-15 hour through ball milling, fineness is the 250-300 order, after process dehydration then, vacuum pugging processing, the shaping and drying glazing, high-temperature oxydation sintering in the liquefied gas kiln, sintering temperature is 1310-1330 ℃, sintering time is 5.5-10 hour, wherein 1150 ℃ of time insulations are 45-60 minute, and maximum temperature insulation 30-40 minute is cooled off standby.
2, the preparation of composite coating slurry: the far infrared radiation coating is formed (weight %) and is: cordierite 7.5-15, the high temperature synthetic 35-42.5 of transition metal oxides such as iron cobalt chromium-copper, inorganic flux 50-60; The induction vortex heating coating is formed (weight %): silver powder 82-91 is basic siderochrome Nickel Aluminium Alloy Powder 0-9, bismuth oxide 4-10, inorganic flux 2-6 with ferro element; The far-infrared reflection coating is formed (weight %): crystal whisker of hexa potassium titanate 50-60, inorganic flux 40-50; Inorganic flux wherein is to take by weighing after lithia, boron oxide, silica, phosphorous oxide etc. mix according to the component weight percentage, scorification under the high temperature in Muffle furnace, and melt temperature is 1350 ℃-1450 ℃, the melting time is 2h; The frit that sinters grinds through pulverizing, and crosses the 250-300 mesh standard sieve, makes the inorganic flux of powder; Take by weighing the high temperature synthetic of transition metal oxides such as cordierite and iron cobalt chromium-copper and silver powder then according to the component weight percentage and based on the siderochrome Nickel Aluminium Alloy Powder of ferro element, crystal whisker of hexa potassium titanate (K
2O6TiO
2) mix with inorganic flux, add an amount of varnish (terpinol, glycerine, propane diols, dibutylester, turpentine oil, camphorated oil), be modulated into the suitable far infrared radiation coating of viscosity, induction vortex heating coating, three kinds of slurries of far-infrared reflection coating.
3, the preparation of cooker: after ceramic body preliminary treatment (mainly being the polishing bottom), adopt coating processes such as spraying, brushing, blade coating, serigraphy, after successively far infrared radiation coating, induction vortex heating coating, three kinds of slurries of far infrared heat-reflective coating being coated in the ceramic body lower surface or making the transfer marble paper, to shift marble paper and be pasted on the ceramic body bottom, in thermostatic drying chamber, dried 8-20 minute down then, put into Muffle furnace again in 500 ℃ of-850 ℃ of following sintering 3-5h in 120 ℃-180 ℃.
The cooker that the present invention proposes by the manufacturing of high heat-resisting ceramic material; its bottom applies the induction vortex heating coating that one deck has far infrared emission and reflection function concurrently; make its cooking food of on electromagnetic induction furnace, working; improve heat utilization efficiency, and the food cooked genuineness, delicious flavour; good heat insulating; and safety even the dry combustion method cooker does not burst yet, has been protected other people personal safety.This cooker base coat can be by playing the defencive function to electromagnetic induction furnace to far reflex in addition, and electromagnetic induction furnace can not burnt out coil because of crossing heat radiation.The existing energy-conservation function efficiently that has again of this cooker.This cooker is suitable for the use occasion (as various cooking methods such as frying, fry in shallow oil, explode, boil) of original metallic article, even also do not burst under dry fire condition.
The remarkable advantage that this invention has compared with prior art:
1, Heat stability is good, performance are higher than general heat-stable ceramic cooker, can not burst under the dry-fire condition during use, and safety is secure.
2, cooker intensity height, excellent thermal insulation performance.
3, integrate far ir ray radiation reflection and induction vortex heating function, heat utilization efficiency height, long service life.
4, this cooker efficient energy-saving can improve thermal efficiency 15%-20% under the same power condition.
5, simple, the technical maturity of manufacturing equipment, stablize good reproducibility, be suitable for mass industrialized production.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Wherein, 1-high heat-resisting ceramic material body, 2-has the induction vortex heating composite coating of far infrared emission and reflection function, 3-pot cover, 4-pot body concurrently.
Specify the present invention below in conjunction with embodiment:
1, takes by weighing each raw mineral materials according to dosage, it contains (weight %) and contains lithium minerals raw material spodumene 30%, lithium feldspar 30%, eucryptite 1%, quartzy 7%, kaolin 30%, calcination of talc 2% mixed levigate in 12 hours through ball milling, fineness is 250 orders, after process dehydration then, vacuum pugging processing, the shaping and drying glazing, high-temperature oxydation sintering in the liquefied gas kiln, sintering temperature is 1310 ℃, sintering time is 6 hours, wherein 1150 ℃ of time insulations are 45 minutes, and maximum temperature insulation 30 minutes is cooled off standby.
2, take by weighing each coating material, the far infrared radiation coating contains (weight %) cordierite 15, the high temperature synthetic 35 of transition metal oxides such as iron cobalt chromium-copper, inorganic flux 50; The induction vortex heating coating contains (weight %) 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 %) crystal whisker of hexa potassium titanate 60, inorganic flux 40.Add an amount of varnish respectively, be modulated into the suitable slurry of viscosity, adopt silk-screen printing technique, print three kinds of coatings respectively according to order and make the transfer marble paper, will shift marble paper and be pasted on the cooker bottom, in thermostatic drying chamber, dried 12 minutes down then in 120 ℃.Above-mentioned transition metal oxide (weight %): iron oxide 45%, cobalt oxide 20%, chromium oxide 33% and cupric oxide 2%; Inorganic flux (weight %): lithia 3%, boron oxide 25%, silica 47%, aluminium oxide 7%, potassium oxide 5%, sodium oxide molybdena 3%, calcium oxide 6%, strontium oxide strontia 4%.
3, cooker is put into Muffle furnace or gas kiln through 820 ℃ of bakings in cooking cook ware bottom, sintering 3h enters later process through after the product inspection.
4, the sample thermal coefficient of expansion is a
(20-800 ℃)=1.2 * 10
-6/ ℃, dry combustion method is not split on 1500W-1800W electromagnetic oven power shelves, the method cooked food such as can be used to explode, fry, boil, fry in shallow oil for a long time.
5, the efficient height of heating up water, 1300 watts of electromagnetic oven powers, the boiled time of 1000 ml tap waters is 7 minutes.
1, takes by weighing each raw mineral materials according to dosage, it contains (weight %) and contains lithium minerals raw material spodumene 30%, lithium feldspar 35%, eucryptite 5%, quartzy 5%, kaolin 28%, calcination of talc 2% mixed levigate in 13 hours through ball milling, fineness is 280 orders, after process dehydration then, vacuum pugging processing, the shaping and drying glazing, high-temperature oxydation sintering in the liquefied gas kiln, sintering temperature is 1330 ℃, sintering time is 6.5 hours, wherein 1150 ℃ of time insulations are 60 minutes, and maximum temperature insulation 40 minutes is cooled off standby.
2, take by weighing each coating material, the far infrared radiation coating contains (weight %) cordierite 7.5, the high temperature synthetic 42.5 of transition metal oxides such as iron cobalt chromium-copper, inorganic flux 50; The induction vortex heating coating contains (weight %) silver powder 82, is basic siderochrome Nickel Aluminium Alloy Powder 9, bismuth oxide 6, inorganic flux 3 with ferro element; The far infrared heat-reflective coating contains (weight %) crystal whisker of hexa potassium titanate 50, inorganic flux 50.Add an amount of varnish respectively, be modulated into the suitable slurry of viscosity, adopt silk-screen printing technique, print three kinds of coatings respectively according to order and make the transfer marble paper, will shift marble paper and be pasted on the cooker bottom, in thermostatic drying chamber, dried 12 minutes down then in 120 ℃.The above-mentioned transition metal oxide and the composition of inorganic flux are with embodiment 1.
3, cooker is put into Muffle furnace or gas kiln through 800 ℃ of bakings in cooking cook ware bottom, sintering 5h enters later process through after the product inspection.
4, the sample thermal coefficient of expansion is a
(20-800 ℃)=0.68 * 10
-6/ ℃, dry combustion method is not split on 1500W-2000W electromagnetic oven power shelves, the method cooked food such as can be used to explode, fry, boil, fry in shallow oil for a long time.
5, the efficient height of heating up water, 1300 watts of electromagnetic oven powers, the boiled time of 1000 ml tap waters is 10 minutes.
Claims (1)
1, a kind of high heat-resisting ceramic cooking cook ware that is applicable to electromagnetic induction furnace comprises ceramic body and composite coating, it is characterized in that: ceramic body is the following proportioning with by weight percentage:
Spodumene 30-40%
Lithium feldspar 30-40%
Eucryptite 0-16%
Quartzy 0-15%
Kaolin 25-35%
Calcination of talc 1-5%
For raw material is formed, form through high-temperature firing after ground and mixed, moulding, the dry glazing; Then adopt coating processes, successively will be by the high temperature synthetic of cordierite, iron cobalt chromium-copper transition metal oxide and the far infrared radiation coating that inorganic flux forms, the induction vortex heating coating that forms by silver powder, siderochrome Nickel Aluminium Alloy Powder, bismuth oxide and inorganic flux and be coated on the ceramic body bottom by the far-infrared reflection coating that crystal whisker of hexa potassium titanate and inorganic flux form based on ferro element, the goods that obtain through roasting.
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| CNB2007101007597A CN100427014C (en) | 2007-04-17 | 2007-04-17 | High heat-resisting ceramic cooking cook ware suitable for electromagnetic induction furnace |
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|---|---|---|---|
| CNB2007101007597A CN100427014C (en) | 2007-04-17 | 2007-04-17 | High heat-resisting ceramic cooking cook ware suitable for electromagnetic induction furnace |
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| CN101077274A true CN101077274A (en) | 2007-11-28 |
| CN100427014C CN100427014C (en) | 2008-10-22 |
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