CN113208409A - Ceramic heating pot special for induction cooker and preparation method thereof - Google Patents
Ceramic heating pot special for induction cooker and preparation method thereof Download PDFInfo
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
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Abstract
The invention relates to the technical field of electromagnetic heating ceramics, in particular to a ceramic heating pot special for an induction cooker and a preparation method thereof. The ceramic heating pot tool special for the induction cooker comprises a ceramic inner glaze layer, a ceramic substrate layer, a ceramic metallization layer, a metal heat conduction coating and a ceramic outer glaze layer from inside to outside in sequence; 5-15% of metallic nickel fibers are added into the ceramic matrix layer; the ceramic metallization layer is a Mo-Mn metallization layer; the metal heat-conducting coating is one or a mixture of metal iron, metal nickel, iron-based alloy and nickel-based alloy. The cookware disclosed by the invention has certain electromagnetic heating performance, the metal heat-conducting coating at the bottom has good cohesiveness with the cookware, the cookware is not easy to fall off, the service life of the cookware is long, and under the dual actions of the cookware and the metal heat-conducting coating, the electromagnetic heating efficiency of the cookware is improved, and the energy consumption is reduced; the invention also provides a preparation method of the composition.
Description
Technical Field
The invention relates to the technical field of electromagnetic heating ceramics, in particular to a ceramic heating pot special for an induction cooker and a preparation method thereof.
Background
As is well known, various cooking appliances such as aluminum pots, stainless steel pots, copper pots and the like are commonly used at present, aluminum steel is easy to cause cancers when the cooking appliances are used, copper pots are easy to generate heavy metals to poison people, only iron pots and stainless steel pots cannot generate adverse effects on human bodies, but the cooking appliances are not ideal for cooking and stewing food.
The ceramic pot has good sealing performance and good internal circulation, the stewed food is easy to taste, and the taste of the mashed soup which is easy to cook the meat food is much better. The ceramic pot has high sealing performance and excellent heat insulating performance. In addition, the ceramic pot which is made of natural materials does not have any radiation. However, ceramic materials are used as non-magnetic materials, and cannot be directly heated by an induction cooker, so that the application of ceramic cookware in life is limited. In the prior art, a method of adding a magnetic material coating at the bottom of a ceramic pot is generally adopted, so that the ceramic pot can be used for heating an induction cooker.
The ceramic pot utensil of electromagnetism stove heating that circulates in the existing market mainly has following several: (1) the metal heat-conducting coating is added outside the ceramic pot, but because the ceramic material and the metal heat-conducting coating have poor cohesiveness, the coating is easy to fall off, the service life of the pot is reduced, and if a mechanical connection mode is adopted, the pot is troublesome to use; (2) the nano-silver heat-conducting coating is added in the ceramic pot, but the cost is higher, and the market popularization of the pot is lower; (3) the heat conducting metal is added into the ceramic pot material body, but the addition amount of the heat conducting metal is limited, the electromagnetic heat conducting efficiency of the pot is low, the energy consumption is high, and the heating is slow.
For example, patent CN201711283528.4 discloses a ceramic pot with rapid heat conduction and dry burning resistance for electromagnetic oven, wherein a high temperature resistant glaze inner layer and a nano conductive silver layer are sequentially arranged on the inner wall of the ceramic pot blank from inside to outside, the nano conductive silver layer is arranged on the high temperature resistant glaze layer, the purity of the nano conductive silver layer is more than 99.9, the thickness is 1-2mm, the average particle diameter is 100 and 200nm, and the volume density is 0.50-0.8g/cm3. The nano conductive silver layer can be directly used on an induction cooker and can play a role in sterilization and rapid heat conduction. However, the price of the nano conductive silver layer is expensive, which results in higher cost of the cookware.
Patent CN201910249089.8 discloses a heat-resistant ceramic electromagnetic oven pot, in which a metal protective layer, a hard heat conduction layer and a composite heat-resistant layer are sequentially arranged at the bottom of a ceramic pot body from outside to inside; the metal protective layer comprises the following components in percentage by weight: 1.5-3.8 parts of C, 15-27 parts of Cr, 5-7 parts of Mn and 60-72 parts of Fe; the hard heat conduction layer comprises an aluminum foil base layer, a graphite base layer and a copper foil base layer which are sequentially arranged from top to bottom; the composite heat-resistant layer comprises the following components in percentage by weight: 30-40 parts of aluminum oxide, 20-40 parts of flame retardant, 4-10 parts of magnesium fluoride, 2-10 parts of calcium fluoride, 2-10 parts of wollastonite and 0.2-1 part of antioxidant. However, the ceramic material itself has poor adhesion to the metal protective layer, and the above patent only simply compounds the metal protective layer with the ceramic pot bottom, which easily causes the coating to fall off and shortens the service life of the ceramic pot.
Therefore, in the face of the market demand of ceramic pots heated by induction cookers, it is necessary to provide a ceramic pot with low cost, high heating efficiency and long service life.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the ceramic heating pot special for the induction cooker is provided, the pot has certain electromagnetic heating performance, the metal heat conducting coating at the bottom and the pot are good in cohesiveness and not easy to fall off, the pot is long in service life, the electromagnetic heating efficiency of the pot is improved under the dual action of the pot and the metal heat conducting coating, and the energy consumption is reduced; the invention also provides a preparation method of the composition.
The ceramic heating pot tool special for the induction cooker comprises a ceramic inner glaze layer, a ceramic substrate layer, a ceramic metallization layer, a metal heat conduction coating and a ceramic outer glaze layer from inside to outside in sequence; 5-15% of metallic nickel fibers are added into the ceramic matrix layer; the ceramic metallization layer is a Mo-Mn metallization layer; the metal heat-conducting coating is one or a mixture of metal iron, metal nickel, iron-based alloy and nickel-based alloy.
The ceramic inner glaze layer can adopt any conventional glaze used by ceramic cookware.
Preferably, the glaze of the ceramic inner glaze layer consists of the following raw materials in parts by weight:
15-20 parts of quartz, 40-50 parts of lithium feldspar, 5-8 parts of aluminum oxide, 5-10 parts of calcium oxide, 15-20 parts of copper oxide, 5-10 parts of manganese oxide and 0.1-0.5 part of nickel.
The ceramic substrate layer is composed of 5-15% of metallic nickel fiber and 85-95% of ceramic material, wherein the ceramic material can adopt any conventional ceramic material used for ceramic cookware substrates.
Preferably, the ceramic material is composed of the following raw materials in parts by weight:
10-20 parts of quartz, 5-10 parts of kaolin, 10-20 parts of alumina, 10-15 parts of potassium feldspar, 1-3 parts of zircon powder, 2-5 parts of talc and 3-8 parts of boric acid.
The diameter of the metal nickel fiber is 30-50 μm, and the length-diameter ratio is 20-40.
The ceramic metallization layer is a Mo-Mn metal oxidation layer and is composed of the following raw materials in percentage by weight:
60-80% of metal molybdenum, 10-20% of manganese oxide, 5-10% of aluminum oxide, 2-5% of silicon dioxide and 2-5% of calcium oxide.
Preferably, the metal heat conducting coating is one or two of metal iron and iron-based alloy and one or two of metal nickel and nickel-based alloy, wherein the weight ratio of Fe to Ni is 3-5: 1.
The ceramic outer glaze layer is a high-temperature-resistant wear-resistant glaze layer and is composed of the following raw materials in parts by weight:
15-20 parts of quartz, 30-40 parts of aluminum oxide, 1-3 parts of zirconium oxide, 5-10 parts of calcium fluoride, 5-10 parts of magnesium fluoride, 0.2-1 part of antioxidant, 0.1-0.5 part of nickel and 0-10 parts of pigment.
The invention relates to a preparation method of a ceramic heating pot special for an induction cooker, which comprises the following steps:
(1) uniformly mixing the ceramic material of the ceramic substrate layer and the metal nickel fiber, molding to obtain a cookware green body, drying, mixing and melting the glaze raw material of the ceramic inner glaze layer, coating the mixture on the inner surface of the cookware green body, placing the green body in a sintering furnace, and preserving heat for 1-2 hours at 1280-1320 ℃ to form the ceramic inner glaze layer;
(2) crushing and mixing the raw materials of the ceramic metallization layer, adding a solvent, uniformly stirring to form a paste mixture, printing the paste mixture on the outer surface of a ceramic pot by a screen printing method, placing the paste mixture in a sintering furnace, and preserving heat for 1-2 hours at the temperature of 950-1050 ℃ to form the ceramic metallization layer;
(3) mixing the raw materials of the metal heat-conducting coating, and thermally spraying the mixture on the surface of the ceramic metallization layer to form the metal heat-conducting coating;
(4) mixing and melting the glaze raw materials of the ceramic outer glaze layer, coating the mixture on the surface of the metal heat conduction coating, placing the mixture in a sintering furnace, and preserving the heat for 1-2 hours at the temperature of 1320-.
In the step (1), the pot green body is dried in the air circulation environment, the drying temperature is 80-150 ℃, and the drying time is 1-2 hours.
In the step (2), the solvent is ethanol, and the weight ratio of the solvent to the ceramic metalized layer raw material is 1-2: 1.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, a certain amount of metal nickel fibers are added into the ceramic matrix material, so that the strength of the ceramic matrix is improved, and meanwhile, the ceramic matrix is endowed with an electromagnetic heating function by utilizing the high electromagnetic property of the metal nickel and is combined with the metal heat-conducting coating, so that the electromagnetic heating efficiency of the ceramic pot is greatly improved, and the energy consumption is reduced;
(2) according to the invention, the outer surface of the ceramic substrate is subjected to metallization treatment, and then the metal heat-conducting coating is sprayed, so that the bonding strength between the metal heat-conducting coating and the ceramic substrate is enhanced, the metal heat-conducting coating is prevented from falling off, and the service life of the electromagnetic heating ceramic pot is greatly prolonged;
(3) the magnetic heating ceramic pot has the characteristics of low raw material cost, simple and feasible preparation method and convenience for industrial production, and the prepared magnetic heating ceramic pot has the characteristics of safety, no toxicity, low cost, high heating efficiency, low energy consumption and good market prospect.
Detailed Description
Hereinafter, specific embodiments of the present invention will be described in detail. Well-known methods of operation or functions have not been described in detail in the following examples to avoid unnecessarily obscuring the details. Approximating language, as used herein in the following examples, may be applied to identify quantitative representations that could permissibly vary in number without resulting in a change in the basic function. Unless otherwise specified, parts and percentages appearing in the embodiments are weight parts and percentages are weight percentages.
Example 1
The ceramic heating pot special for the induction cooker is prepared according to the technical scheme of the invention, and the raw materials are as follows:
ceramic inner glaze layer: 20 parts of quartz, 40 parts of lithium feldspar, 5 parts of aluminum oxide, 8 parts of calcium oxide, 18 parts of copper oxide, 8 parts of manganese oxide and 0.5 part of nickel.
A ceramic substrate layer: 15% of metallic nickel fiber (diameter 50 μm, length-diameter ratio 20) and 85% of ceramic material;
ceramic material: 15 parts of quartz, 8 parts of kaolin, 20 parts of alumina, 10 parts of potassium feldspar, 3 parts of zircon powder, 2 parts of talc and 5 parts of boric acid.
Ceramic metallization layer: 80% of metal molybdenum, 10% of manganese oxide, 5% of aluminum oxide, 2% of silicon dioxide and 3% of calcium oxide.
Metal heat-conducting coating: 80% of metallic iron and 20% of metallic nickel.
Ceramic glaze layer: 15 parts of quartz, 40 parts of aluminum oxide, 2 parts of zirconium oxide, 8 parts of calcium fluoride, 8 parts of magnesium fluoride, 0.5 part of antioxidant and 0.5 part of nickel.
The preparation method comprises the following steps:
(1) uniformly mixing the ceramic material of the ceramic substrate layer and the metal nickel fiber, forming to obtain a cookware green body, drying for 1h at 100 ℃, mixing and melting the glaze raw material of the ceramic inner glaze layer, coating the mixture on the inner surface of the cookware green body, placing the green body in a sintering furnace, and preserving heat for 1h at 1300 ℃ to form the ceramic inner glaze layer;
(2) crushing and mixing the raw materials of the ceramic metallization layer, adding a solvent which is 1 time of the total weight of the raw materials, uniformly stirring to form a paste mixture, printing the paste mixture on the outer surface of a ceramic pot by a screen printing method, placing the ceramic pot in a sintering furnace, and preserving heat for 1h at 1000 ℃ to form the ceramic metallization layer;
(3) mixing the raw materials of the metal heat-conducting coating, and thermally spraying the mixture on the surface of the ceramic metallization layer to form the metal heat-conducting coating;
(4) mixing and melting the glaze raw materials of the ceramic outer glaze layer, coating the mixture on the surface of the metal heat conduction coating, placing the mixture in a sintering furnace, and preserving heat for 1h at 1350 ℃ to form the ceramic outer glaze layer, namely preparing the ceramic heating pot special for the induction cooker.
Example 2
The ceramic heating pot special for the induction cooker is prepared according to the technical scheme of the invention, and the raw materials are as follows:
ceramic inner glaze layer: 15 parts of quartz, 50 parts of lithium feldspar, 8 parts of aluminum oxide, 5 parts of calcium oxide, 15 parts of copper oxide, 10 parts of manganese oxide and 0.2 part of nickel.
A ceramic substrate layer: 10% of metallic nickel fiber (diameter 50 μm, length-diameter ratio 20) and 90% of ceramic material;
ceramic material: 20 parts of quartz, 5 parts of kaolin, 15 parts of alumina, 12 parts of potassium feldspar, 1 part of zircon powder, 3 parts of talc and 3 parts of boric acid.
Ceramic metallization layer: 70% of molybdenum, 15% of manganese oxide, 8% of aluminum oxide, 5% of silicon dioxide and 2% of calcium oxide.
Metal heat-conducting coating: 75% of metallic iron and 25% of metallic nickel.
Ceramic glaze layer: 20 parts of quartz, 30 parts of aluminum oxide, 1 part of zirconium oxide, 5 parts of calcium fluoride, 10 parts of magnesium fluoride, 1 part of antioxidant, 0.3 part of nickel and 2 parts of pigment.
The preparation method comprises the following steps:
(1) uniformly mixing the ceramic material of the ceramic substrate layer and the metal nickel fiber, forming to obtain a cookware green body, drying for 1h at 100 ℃, mixing and melting the glaze raw material of the ceramic inner glaze layer, coating the mixture on the inner surface of the cookware green body, placing the green body in a sintering furnace, and preserving heat for 1h at 1300 ℃ to form the ceramic inner glaze layer;
(2) crushing and mixing the raw materials of the ceramic metallization layer, adding a solvent which is 1 time of the total weight of the raw materials, uniformly stirring to form a paste mixture, printing the paste mixture on the outer surface of a ceramic pot by a screen printing method, placing the ceramic pot in a sintering furnace, and preserving heat for 1h at 1000 ℃ to form the ceramic metallization layer;
(3) mixing the raw materials of the metal heat-conducting coating, and thermally spraying the mixture on the surface of the ceramic metallization layer to form the metal heat-conducting coating;
(4) mixing and melting the glaze raw materials of the ceramic outer glaze layer, coating the mixture on the surface of the metal heat conduction coating, placing the mixture in a sintering furnace, and preserving heat for 1h at 1350 ℃ to form the ceramic outer glaze layer, namely preparing the ceramic heating pot special for the induction cooker.
Example 3
The ceramic heating pot special for the induction cooker is prepared according to the technical scheme of the invention, and the raw materials are as follows:
ceramic inner glaze layer: 18 parts of quartz, 45 parts of lithium feldspar, 6 parts of aluminum oxide, 6 parts of calcium oxide, 20 parts of copper oxide, 7 parts of manganese oxide and 0.3 part of nickel.
A ceramic substrate layer: 5% of metallic nickel fiber (diameter 50 μm, length-diameter ratio 20) and 95% of ceramic material;
ceramic material: 10 parts of quartz, 10 parts of kaolin, 10 parts of alumina, 15 parts of potassium feldspar, 2 parts of zircon powder, 5 parts of talc and 8 parts of boric acid.
Ceramic metallization layer: 60% of metal molybdenum, 20% of manganese oxide, 10% of aluminum oxide, 5% of silicon dioxide and 5% of calcium oxide.
Metal heat-conducting coating: 85% of metallic iron and 15% of metallic nickel.
Ceramic glaze layer: 18 parts of quartz, 35 parts of alumina, 1.5 parts of zirconia, 8 parts of calcium fluoride, 10 parts of magnesium fluoride, 0.5 part of antioxidant, 0.1 part of nickel and 4 parts of pigment.
The preparation method comprises the following steps:
(1) uniformly mixing the ceramic material of the ceramic substrate layer and the metal nickel fiber, forming to obtain a cookware green body, drying for 1h at 100 ℃, mixing and melting the glaze raw material of the ceramic inner glaze layer, coating the mixture on the inner surface of the cookware green body, placing the green body in a sintering furnace, and preserving heat for 2h at 1280 ℃ to form the ceramic inner glaze layer;
(2) crushing and mixing the raw materials of the ceramic metallization layer, adding a solvent which is 1 time of the total weight of the raw materials, uniformly stirring to form a paste mixture, printing the paste mixture on the outer surface of a ceramic pot by a screen printing method, placing the ceramic pot in a sintering furnace, and preserving heat for 2 hours at 950 ℃ to form the ceramic metallization layer;
(3) mixing the raw materials of the metal heat-conducting coating, and thermally spraying the mixture on the surface of the ceramic metallization layer to form the metal heat-conducting coating;
(4) mixing and melting glaze raw materials of the ceramic outer glaze layer, coating the mixture on the surface of the metal heat conduction coating, placing the mixture in a sintering furnace, and preserving heat for 2 hours at 1320 ℃ to form the ceramic outer glaze layer, namely preparing the ceramic heating pot special for the induction cooker.
Comparative example 1
Commercial induction cooker heating ceramic pot utensil.
Comparative example 2
This comparative example differs from example 1 only in that metallic nickel fibers are not added to the ceramic matrix layer and is prepared as follows:
(1) uniformly mixing the ceramic materials of the ceramic substrate layer, forming to obtain a cookware green body, drying for 1h at 100 ℃, mixing and melting the glaze raw materials of the ceramic inner glaze layer, coating the mixture on the inner surface of the cookware green body, placing the green body in a sintering furnace, and preserving heat for 1h at 1300 ℃ to form the ceramic inner glaze layer;
(2) crushing and mixing the raw materials of the ceramic metallization layer, adding a solvent which is 1 time of the total weight of the raw materials, uniformly stirring to form a paste mixture, printing the paste mixture on the outer surface of a ceramic pot by a screen printing method, placing the ceramic pot in a sintering furnace, and preserving heat for 1h at 1000 ℃ to form the ceramic metallization layer;
(3) mixing the raw materials of the metal heat-conducting coating, and thermally spraying the mixture on the surface of the ceramic metallization layer to form the metal heat-conducting coating;
(4) mixing and melting the glaze raw materials of the ceramic outer glaze layer, coating the mixture on the surface of the metal heat conduction coating, placing the mixture in a sintering furnace, and preserving heat for 1h at 1350 ℃ to form the ceramic outer glaze layer, namely preparing the ceramic heating pot special for the induction cooker.
Comparative example 3
The comparative example is different from the example 1 only in that the external surface of the ceramic substrate layer is not metallized, and the metal heat-conducting coating is directly sprayed on the ceramic substrate layer, and the preparation method comprises the following steps:
(1) uniformly mixing the ceramic material of the ceramic substrate layer and the metal nickel fiber, forming to obtain a cookware green body, drying for 1h at 100 ℃, mixing and melting the glaze raw material of the ceramic inner glaze layer, coating the mixture on the inner surface of the cookware green body, placing the green body in a sintering furnace, and preserving heat for 1h at 1300 ℃ to form the ceramic inner glaze layer;
(2) mixing the raw materials of the metal heat-conducting coating, and then thermally spraying the mixture on the outer surface of the ceramic matrix to form the metal heat-conducting coating;
(3) mixing and melting the glaze raw materials of the ceramic outer glaze layer, coating the mixture on the surface of the metal heat conduction coating, placing the mixture in a sintering furnace, and preserving heat for 1h at 1350 ℃ to form the ceramic outer glaze layer, namely preparing the ceramic heating pot special for the induction cooker.
Comparative example 4
The comparative example is different from the example 1 only in that the metal nickel fiber is not added into the ceramic substrate layer, the outer surface of the ceramic substrate layer is not subjected to metallization treatment, and the metal heat-conducting coating is directly sprayed on the ceramic substrate layer, and the preparation method comprises the following steps:
(1) uniformly mixing the ceramic materials of the ceramic substrate layer, forming to obtain a cookware green body, drying for 1h at 100 ℃, mixing and melting the glaze raw materials of the ceramic inner glaze layer, coating the mixture on the inner surface of the cookware green body, placing the green body in a sintering furnace, and preserving heat for 1h at 1300 ℃ to form the ceramic inner glaze layer;
(2) mixing the raw materials of the metal heat-conducting coating, and then thermally spraying the mixture on the outer surface of the ceramic matrix to form the metal heat-conducting coating;
(3) mixing and melting the glaze raw materials of the ceramic outer glaze layer, coating the mixture on the surface of the metal heat conduction coating, placing the mixture in a sintering furnace, and preserving heat for 1h at 1350 ℃ to form the ceramic outer glaze layer, namely preparing the ceramic heating pot special for the induction cooker.
The finished pots in examples 1-3 and comparative examples 1-4 were tested for performance and the results are shown in table 1.
Table 1 finished pot performance test results in examples 1-3 and comparative examples 1-4
As can be seen from the table 1, the ceramic heating pot special for the induction cooker, prepared by the invention, is safe and nontoxic, has good heat resistance, high heating efficiency, high coating bonding strength and long service life, and has better market prospect.
Claims (10)
1. The utility model provides a special ceramic heating pan of electromagnetism stove which characterized in that: the ceramic glaze layer, the ceramic substrate layer, the ceramic metallization layer, the metal heat conduction coating and the ceramic glaze layer are sequentially arranged from inside to outside; 5-15% of metallic nickel fibers are added into the ceramic matrix layer; the ceramic metallization layer is a Mo-Mn metallization layer; the metal heat-conducting coating is one or a mixture of metal iron, metal nickel, iron-based alloy and nickel-based alloy.
2. The ceramic heating pot tool special for the induction cooker according to claim 1, characterized in that: the glaze of the ceramic inner glaze layer is composed of the following raw materials in parts by weight: 15-20 parts of quartz, 40-50 parts of lithium feldspar, 5-8 parts of aluminum oxide, 5-10 parts of calcium oxide, 15-20 parts of copper oxide, 5-10 parts of manganese oxide and 0.1-0.5 part of nickel.
3. The ceramic heating pot tool special for the induction cooker according to claim 1, characterized in that: the ceramic substrate layer is composed of 5-15% of metallic nickel fiber and 85-95% of ceramic material, and the ceramic material is composed of the following raw materials in parts by weight: 10-20 parts of quartz, 5-10 parts of kaolin, 10-20 parts of alumina, 10-15 parts of potassium feldspar, 1-3 parts of zircon powder, 2-5 parts of talc and 3-8 parts of boric acid.
4. The ceramic heating pot tool special for the induction cooker according to claim 1, characterized in that: the diameter of the metal nickel fiber is 30-50 μm, and the length-diameter ratio is 20-40.
5. The ceramic heating pot tool special for the induction cooker according to claim 1, characterized in that: the ceramic metallization layer is a Mo-Mn metal oxidation layer and is composed of the following raw materials in percentage by weight: 60-80% of metal molybdenum, 10-20% of manganese oxide, 5-10% of aluminum oxide, 2-5% of silicon dioxide and 2-5% of calcium oxide.
6. The ceramic heating pot tool special for the induction cooker according to claim 1, characterized in that: the metal heat-conducting coating is formed by mixing one or two of metal iron and iron-based alloy with one or two of metal nickel and nickel-based alloy, wherein the weight ratio of Fe to Ni is 3-5: 1.
7. The ceramic heating pot tool special for the induction cooker according to claim 1, characterized in that: the ceramic outer glaze layer is composed of the following raw materials in parts by weight: 15-20 parts of quartz, 30-40 parts of aluminum oxide, 1-3 parts of zirconium oxide, 5-10 parts of calcium fluoride, 5-10 parts of magnesium fluoride, 0.2-1 part of antioxidant, 0.1-0.5 part of nickel and 0-10 parts of pigment.
8. A method for manufacturing the ceramic heating pot special for the induction cooker according to any one of claims 1 to 7, which is characterized in that: the method comprises the following steps:
(1) uniformly mixing the ceramic material of the ceramic substrate layer and the metal nickel fiber, molding to obtain a cookware green body, drying, mixing and melting the glaze raw material of the ceramic inner glaze layer, coating the mixture on the inner surface of the cookware green body, placing the green body in a sintering furnace, and preserving heat for 1-2 hours at 1280-1320 ℃ to form the ceramic inner glaze layer;
(2) crushing and mixing the raw materials of the ceramic metallization layer, adding a solvent, uniformly stirring to form a paste mixture, printing the paste mixture on the outer surface of a ceramic pot by a screen printing method, placing the paste mixture in a sintering furnace, and preserving heat for 1-2 hours at the temperature of 950-1050 ℃ to form the ceramic metallization layer;
(3) mixing the raw materials of the metal heat-conducting coating, and thermally spraying the mixture on the surface of the ceramic metallization layer to form the metal heat-conducting coating;
(4) mixing and melting the glaze raw materials of the ceramic outer glaze layer, coating the mixture on the surface of the metal heat conduction coating, placing the mixture in a sintering furnace, and preserving the heat for 1-2 hours at the temperature of 1320-.
9. The method for manufacturing the ceramic heating pot dedicated for the induction cooker according to claim 8, wherein the method comprises the following steps: in the step (1), the pot green body is dried in the air circulation environment, the drying temperature is 80-150 ℃, and the drying time is 1-2 hours.
10. The method for manufacturing the ceramic heating pot dedicated for the induction cooker according to claim 8, wherein the method comprises the following steps: in the step (2), the solvent is ethanol, and the weight ratio of the solvent to the ceramic metalized layer raw material is 1-2: 1.
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