KR102165476B1 - A method of manufacturing kitchen container for induction heating and kitchen container for induction heating - Google Patents

Abstract

An embodiment of the present invention provides a manufacturing method of a ceramic coated kitchen container for induction heating. According to an embodiment of the present invention, after cutting a steel sheet including an iron-based material on which an aluminum plated layer is formed, exposure of the iron-based material exposed to the cutting surface can be eliminated, thereby providing a ceramic coated kitchen container for induction heating with improved corrosion resistance.

Description

Induction heating kitchen container manufacturing method and induction heating kitchen container {A method of manufacturing kitchen container for induction heating and kitchen container for induction heating}

The present invention relates to a method for manufacturing a kitchen container for induction heating, and more particularly, to a ceramic coated induction heating kitchen container with improved corrosion resistance of a cut surface.

Metal materials used for kitchen containers are mainly aluminum, along with carbon steel, cast iron, and stainless steel, among which aluminum materials account for 50% of the metal materials used in kitchen containers due to their lighter weight compared to iron-based materials.

Magnetic materials are required to manufacture kitchen containers for induction heating. When the magnetic line of force generated from the coil passes through a kitchen container capable of induction heating, an eddy current is generated by the resistance component of the material constituting the kitchen container, and this eddy current is converted into heat by the resistance component, so the kitchen container itself heats up. This is because cooking can be performed.

Induction heating of a kitchen container made of metal occurs at a specific frequency, and induction heating does not occur in an aluminum kitchen container, which is generally non-magnetic. Therefore, the application of induction heating to an aluminum kitchen container that is widely used due to its light weight requires a technical solution.

Kitchen containers are mainly manufactured as final products by forming a metal material in the form of a plate and then applying a Teflon or ceramic coating to the surface. Although ceramic coatings have high hardness and environmentally friendly advantages, they have a problem in that metal materials that can be applied are limited due to the porous structure, which is an inherent characteristic of ceramic coatings. In the case of ceramic coating, since an oxide film is formed on aluminum or titanium material, it is well applied without cracking or corrosion, but it is difficult to apply due to problems when applied to iron-based materials, which are materials sensitive to corrosion.

In other words, the porous structure of the ceramic coating layer provides a passage through which corrosive substances (oxygen ions, chloride ions, etc.) can easily pass, so when applying the ceramic coating to a steel material, corrosion occurs, resulting in poor appearance as well as a coating layer function. It causes problems such as deterioration and peeling of the coating layer. Corrosive substances introduced through the pores react with the steel material to generate iron oxide, which expands more than three times in volume and generates tensile stress in the ceramic coating layer, causing cracking or peeling of the ceramic coating layer.

In addition, when cutting a coated iron-based steel plate to manufacture an induction heating kitchen container, the iron-based material is exposed on the cutting surface, causing a problem in that corrosion is easy.

In order to achieve the above technical problem, an embodiment of the present invention provides an induction heating kitchen container manufacturing method with improved corrosion resistance of a cut surface and an induction heating kitchen container manufactured by the manufacturing method.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned can be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. There will be.

In order to achieve the above technical problem, one aspect of the present invention is to form an aluminum plating layer on the upper and lower steel sheets containing iron-based materials; Cutting the steel plate on which the aluminum plating layer is formed to form a cut surface in which the iron-based material is exposed to the outside; Heat-treating the cut surface to form a metal oxide layer on the cut surface; Press-forming a steel plate having a metal oxide layer formed on the cut surface to form a kitchen container; And forming a ceramic coating layer on the exposed surface of the steel plate manufactured in the form of a kitchen container. It provides an induction heating kitchen container manufacturing method comprising a.

In an embodiment of the present invention, the step of forming the metal oxide layer may be performed at 500°C to 700°C.

In one embodiment of the present invention, the ceramic coating layer includes any one or more of SiO ₂ , Al ₂ O ₃ , CaO, BaO, ZnO, K ₂ O, Na ₂ O, F, NiO, CoO, MnO ₂ or BeO It can be configured.

In one embodiment of the present invention, the thickness of the iron-based material may be 1 mm to 4 mm.

In one embodiment of the present invention, the thickness of the aluminum plating layer may be 10 μm to 30 μm.

One aspect of the present invention, the step of forming an aluminum plating layer on the upper and lower steel sheet including an iron-based material; Cutting the steel plate on which the aluminum plating layer is formed to form a cut surface in which the iron-based material is exposed to the outside; Heat-treating the cut surface to form a metal oxide layer on the cut surface; Forming a ceramic coating layer on a surface exposed to the outside of a steel sheet having a metal oxide layer formed on the cut surface; And pressing the steel plate on which the ceramic coating layer is formed to form a kitchen container. It provides an induction heating kitchen container manufacturing method comprising a.

In an embodiment of the present invention, the step of forming the metal oxide layer may be performed at 500°C to 700°C.

In one embodiment of the present invention, the ceramic coating layer includes any one or more of SiO ₂ , Al ₂ O ₃ , CaO, BaO, ZnO, K ₂ O, Na ₂ O, F, NiO, CoO, MnO ₂ or BeO It can be configured.

In one embodiment of the present invention, the thickness of the iron-based material may be 1 mm to 4 mm.

In one embodiment of the present invention, the thickness of the aluminum plating layer may be 10 μm to 30 μm.

An aspect of the present invention provides an induction heating kitchen container manufactured by the method for manufacturing an induction heating kitchen container.

According to an embodiment of the present invention, it is possible to provide a method of manufacturing an induction heated kitchen container with improved corrosion resistance by solving the problem of exposure of iron-based materials during cutting.

According to an embodiment of the present invention, it is possible to provide a method of manufacturing an induction heating kitchen container with improved corrosion resistance by forming a metal oxide layer on a portion of an iron-based material exposed during cutting and covering it with an aluminum plating layer to prevent corrosive substances from infiltrating from the outside. I can.

According to an embodiment of the present invention, it is possible to provide a method of manufacturing an induction heating kitchen container with improved corrosion resistance by introducing an aluminum plating layer between a ceramic coating layer and an iron-based steel sheet.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a flow chart showing a method of manufacturing an induction heating kitchen container according to an embodiment of the present invention.
2 is a schematic view of a cut surface (a) of a steel sheet on which an aluminum plating layer 200 is formed, a cross section (b) of a steel sheet on which the metal oxide layer 400 is formed, and a cross section (c) of the steel sheet on which a ceramic coating layer is formed according to an embodiment to be.
3 is a photograph showing a cross section of a steel sheet after heat treatment at different temperatures in an embodiment of the present invention.
Figure 4 is a flow chart showing a method of manufacturing an induction heating kitchen container according to an embodiment of the present invention.
5 is a schematic diagram showing a cross-section of an induction heating kitchen container according to an embodiment of the present invention.
6 is a photograph of a result of an experiment for improving corrosion resistance of an induction heating kitchen container according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and therefore is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, bonded)" with another part, it is not only "directly connected", but also "indirectly connected" with another member in the middle. "Including the case. In addition, when a part "includes" a certain component, it means that other components may be further provided, rather than excluding other components unless specifically stated to the contrary.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A method of manufacturing an induction heating kitchen container according to an embodiment of the present invention will be described.

1 is a flow chart showing a method of manufacturing an induction heating kitchen container according to an embodiment of the present invention.

2 is a schematic view of a cut surface (a) of a steel sheet on which an aluminum plating layer 200 is formed, a cross section (b) of a steel sheet on which the metal oxide layer 400 is formed, and a cross section (c) of the steel sheet on which a ceramic coating layer is formed according to an embodiment of the present invention. to be.

1 and 2, the induction heating kitchen container manufacturing method includes the steps of forming an aluminum plating layer 200 on the upper and lower portions of a steel plate 100 including an iron-based material (S110); Cutting the steel plate on which the aluminum plating layer 200 is formed to form a cut surface in which the iron-based material is exposed to the outside (S120); Heat-treating the cut surface to form a metal oxide layer 400 on the cut surface (S130); Press-forming a steel plate on which the metal oxide layer 400 is formed on the cut surface to form a kitchen container (S140); And forming a ceramic coating layer 500 on a surface exposed to the outside of a steel plate manufactured in the form of a kitchen container (S150). It may include.

First, the method of manufacturing an induction heating kitchen container of the present invention includes the step (S110) of forming an aluminum plating layer 200 on the upper and lower portions of the steel plate 100 including an iron-based material.

In an embodiment of the present invention, the step of forming the aluminum plating layer (S110) may be performed by an aluminum plating method.

The aluminum plating method may be performed using any one of a vacuum deposition, sputtering, ion plating method, arc ion plating method, and hot-dip aluminum plating method, but it is not limited as long as it is obvious in the technical field of the present invention.

For example, in an embodiment of the present invention, the aluminum plating method may use a hot-dip aluminum plating method, which is a better method than a conventional physical vapor deposition method. When the hot-dip aluminum plating method is performed, molten aluminum is plated. As a method of plating by immersing water, molten aluminum suppresses crystal formation during solidification, so the surface is beautiful, and due to the aluminum sacrificial effect, the surface is uniform, excellent corrosion resistance and heat resistance, and paintability can be excellent. .

The steel plate 100 containing the iron-based material requires a magnetic material to manufacture a kitchen container for induction heating, and thus an iron-based material corresponding to the magnetic material, for example, the iron-based material is manganese as a main component of iron. , Chrome, and the like.

The thickness of the iron-based material may be 1 mm to 4 mm, and the thickness of the iron-based material may be provided through a process of forming a kitchen container and a desired shape in consideration of induction heating efficiency.

In one embodiment of the present invention, the aluminum plating layer 200 can secure adhesion between the two materials by forming a roughness of a certain height on the surface of the metal material for applying the ceramic coating layer 500 to the surface of the metal material. have.

When the surface of the steel plate 100 including the iron-based material is coated with a thin heterogeneous material (for example, aluminum), when the surface is formed with a certain level of roughness, the roughness height is accommodated and the lower metal surface is It is necessary to consider the thickness of the non-exposed surface coating material.

In one embodiment of the present invention, the thickness of the aluminum plating layer 200 may be 10 μm to 30 μm, for example, 12 μm to 20 μm.

For example, when an aluminum plated layer 200 having a thickness of 20 μm is formed on a steel plate 100 containing an iron-based material, the aluminum plated layer 200 is continuously connected when the surface roughness for adhesion to the ceramic coating layer 500 is formed. As a result, the steel plate 100 including the iron-based material at the bottom may not be exposed.

At this time, the surface roughness for securing the adhesion is maintained at a level of 2 μm to 8 μm based on Ra, in this case, the aluminum plating layer 200 having a thickness of 20 μm may have a thickness of 12 μm to 20 μm after surface roughness is formed. .

Therefore, when the thickness of the aluminum plating layer 200 is formed between 10 μm and 30 μm, it is possible to satisfy both the problem of corrosion occurrence due to exposure of the lower iron-based material during roughness formation, as well as the effect of improving adhesion due to roughness formation. In addition, by proposing the upper limit of the thickness of the aluminum plating layer, it can have advantages in terms of material cost and manufacturing.

The aluminum plating layer 200 plays a role in preventing corrosion of the steel plate 100 including the iron-based material due to the penetration of corrosive substances due to the porosity of the ceramic coating layer 500 and increasing the adhesion with the ceramic coating layer 500. do.

Therefore, when the thickness of the aluminum plating layer 200 is 10 μm to 30 μm, the adhesion with the ceramic coating layer 500 is higher, and the corrosion resistance and crack resistance of the steel sheet 100 including an iron-based material will be more improved. I can.

Next, the induction heating kitchen container manufacturing method of the present invention includes a step (S120) of cutting the steel plate on which the aluminum plating layer 200 is formed to form a cut surface in which the iron-based material is exposed to the outside.

The step of forming the cut surface (S120) is not limited as long as it is self-evident as a method of cutting metal, and, for example, it is performed using any one of hydraulic cutting, plasma cutting, laser processing, water jet, and wire cutting. can do.

Referring to Figure 2a), in an embodiment of the present invention, the cut surface is a side surface of the steel plate 100 containing the iron-based material, the first aluminum plating layer formed on the top of the steel plate 100 containing the iron-based material It may include a side surface of 210 and a side surface of the second aluminum plating layer 220 formed under the steel plate 100 including the iron-based material.

When the steel plate 100 including the iron-based material on which the aluminum plating layer 200 is formed is cut, a cut surface where the iron-based material is exposed is formed. When manufacturing a kitchen container as such, the iron-based material is formed from the cut surface where the iron-based material is exposed. Corrosion may occur and the durability of the kitchen container may decrease. Therefore, a technique to prevent this is required.

Next, the method of manufacturing an induction heating kitchen container of the present invention includes a step (S130) of forming a metal oxide layer 400 on the cut surface by heat-treating the cut surface.

In the step of forming the metal oxide layer (S130), the heat treatment means heating to a constant temperature for the purpose of improving the properties of the metal, and the metal oxide layer 400 is performed at a temperature of 500°C to 700°C in an atmospheric atmosphere. ) Can be formed.

3 is a photograph showing a cross section of a steel sheet after heat treatment at different temperatures in an embodiment of the present invention.

3, compared to the case where the heat treatment was performed at 540°C, 560°C, and 580°C (a to c), the heat treatment was performed at 600°C, 620°C and 640°C (d to f). In this case, it can be confirmed that the intermediate layer 300 is generated.

The intermediate layer 300 may be generated when the metal oxide layer 400 is formed through the heat treatment, and may be generated when the heat treatment is performed at a temperature of 600° C. or higher.

When brittleness occurs due to the intermediate layer 300, the aluminum plating layer 200 may be peeled off.

Accordingly, the heat treatment temperature in the step of forming the metal oxide layer (S130) may be performed at 500°C to 700°C, preferably 500°C to 600°C.

In one embodiment of the present invention, the metal oxide layer 400 is formed in a direction perpendicular to the stacked direction of the steel plate 100 including the iron-based material, the intermetallic compound layer 300 and the aluminum plating layer 200 Means the layer

Referring to b) of FIG. 2, in an embodiment of the present invention, the metal oxide layer 400 includes an iron-based metal oxide 410 and a first aluminum metal oxide 421 positioned above the iron-based metal oxide 410. ) And a second aluminum metal oxide 422 positioned below the iron-based metal oxide 410.

In an embodiment of the present invention, the iron-based metal oxide 410 may be a metal oxide generated by heat-treating the steel sheet 100 containing the iron-based material, for example, iron oxide, and the aluminum metal oxide. Reference numeral 420 may be a metal oxide generated by heat-treating the aluminum plating layer 200, and may be, for example, aluminum oxide.

The metal oxide layer 400 prevents the iron-based material from being directly exposed from the cut surface, and serves to prevent the corrosive material from penetrating the steel plate 100 including the iron-based material due to the porosity of the ceramic coating layer 500. It may serve to increase the adhesion between the and the ceramic coating layer 500.

Next, the method of manufacturing an induction heating kitchen container of the present invention includes a step (S140) of press-forming a steel plate on which the metal oxide layer 400 is formed on a cut surface to form a kitchen container.

In one embodiment of the present invention, the step of manufacturing the kitchen container (S140) is a step of forming a kitchen container in which the first aluminum plating layer 210 or the second aluminum plating layer 220 is located inside, It can be molded into various types of kitchen containers as needed. For example, if it is a frying pan, pot, kettle, etc., induction heating kitchen containers, this is not limited.

Next, the method of manufacturing an induction heating kitchen container of the present invention includes forming a ceramic coating layer on a surface exposed to the outside of a steel plate manufactured in the form of a kitchen container (S150).

In an embodiment of the present invention, the step of forming a ceramic coating layer on the exposed surface of the steel plate manufactured in the form of a kitchen container (S150) may be performed through a physical vapor deposition method, a chemical vapor deposition method, or a spray method. have. However, the present invention is not limited thereto, and a coating layer may be formed using various known deposition methods.

2C, the ceramic coating layer 500 includes the first aluminum plating layer 210, a first aluminum metal oxide 421, an iron-based metal oxide 410, a second aluminum metal oxide 422, and It may be formed on the outside and the exposed surface of the second aluminum plating layer 220.

In one embodiment of the present invention, the ceramic coating layer 500 is any one of SiO ₂ , Al ₂ O ₃ , CaO, BaO, ZnO, K ₂ O, Na ₂ O, F, NiO, CoO, MnO ₂ or BeO It may be configured to include the above, the thickness of the ceramic coating layer 500 may be formed in a 20 μm to 60 μm.

At this time, if the thickness of the ceramic coating layer 500 is less than 20 μm, there is a concern that mechanical properties such as durability and abrasion resistance of the ceramic coating layer 500 and chemical properties such as corrosion resistance may be deteriorated, and the thickness of the ceramic coating layer 500 When is more than 60 μm, the mechanical and chemical properties are improved, but there is a concern that the thermal conductivity is lowered.

The ceramic coating layer 500 may serve to prevent food from sticking to the surface of the container as much as possible during the cooking process.

Figure 4 is a flow chart of an induction heating kitchen container manufacturing method of an aspect of the present invention.

Referring to FIG. 4, forming an aluminum plating layer on the upper and lower portions of a steel plate including an iron-based material (S210); Cutting the steel plate on which the aluminum plating layer is formed to form a cut surface in which the iron-based material is exposed to the outside (S220); Heat-treating the cut surface to form a metal oxide layer on the cut surface (S230); Forming a ceramic coating layer on a surface exposed to the outside of the steel sheet having a metal oxide layer formed on the cut surface (S240); And a step (S250) of press-forming the steel plate on which the ceramic coating layer is formed to form a kitchen container.

The steps of forming the aluminum plating layer (S210) to the step of forming the metal oxide layer (S230) are substituted with those described in the above embodiment.

The induction heating kitchen container manufacturing method of the present invention includes the steps of forming a ceramic coating layer on the exposed surface of the steel sheet on which the metal oxide layer is formed (S240), and the step of press-forming the steel sheet on which the ceramic coating layer is formed to form a kitchen container (S250). ).

Compared with the induction heating kitchen container manufacturing method described in the above aspect, after performing the step (S240) of forming the ceramic coating layer 500, the step (S250) of manufacturing the kitchen container is performed. As only changed, the description of each step is the same as that described in the above aspect.

An aspect of the present invention is the step of forming an aluminum plating layer on the upper and lower steel sheets including iron-based materials (S110); Cutting the steel sheet on which the aluminum plating layer is formed to form a cut surface in which the iron-based material is exposed to the outside (S120); Heat treating the cut surface to form a metal oxide layer on the cut surface (S130); Press-forming a steel sheet having a metal oxide layer formed on the cut surface to form a kitchen container (S140); And forming a ceramic coating layer on a surface exposed to the outside of a steel plate manufactured in the form of a kitchen container (S150). It provides an induction heating kitchen container manufactured by the method of manufacturing an induction heating kitchen container including.

5 is a schematic diagram of a cross section of an induction heating kitchen container according to an embodiment of the present invention.

Referring to FIG. 5, the induction heating kitchen container includes a steel plate 100 containing an iron-based material, an aluminum plating layer 200 positioned above and below the steel plate 100 containing the iron-based material, and the iron-based material. It includes a metal oxide layer 400 formed on both ends of the steel plate 100 and the aluminum plating layer 200, and a ceramic coating layer 500 formed on the surfaces exposed to the outside of the aluminum plating layer 200 and the metal oxide layer 400. I can.

A detailed description according to the structure of the induction heating kitchen container will be replaced with that described in the above embodiment.

Experimental Example 1. Corrosion resistance improvement after heat treatment experiment

After the formation of the ceramic coating layer, a salt spray test was performed to confirm the effect of the iron-based metal oxide of the present invention on improving corrosion resistance.

A control group in which a ceramic coating layer was directly formed on a steel sheet containing an iron-based material and a steel sheet containing an iron-based material were heat-treated at 580° C. to form an iron-based metal oxide layer, and then an experimental group in which a ceramic coating layer was formed was prepared.

The salt spray test was carried out under the following conditions: solution 3.5% NaCl (pH 6.5 to 7.2), relative humidity 97%, temperature 37°C, spray pressure 0.095 MPa

Referring to FIG. 6, in the case of the control group not subjected to heat treatment, corrosion occurred in one day, but it was confirmed that corrosion occurred only after 21 days in the experimental group subjected to heat treatment.

According to an embodiment of the present invention, a method of manufacturing an induction heating kitchen container with improved corrosion resistance by forming a metal oxide layer on a portion of an iron-based material exposed during cutting to prevent penetration of corrosive substances from the outside, and induction manufactured by the method Heated kitchenware can be provided.

According to an embodiment of the present invention, it is possible to provide an induction heated kitchen container with improved corrosion resistance by solving the problem of exposure of iron-based materials during cutting.

According to an embodiment of the present invention, an induction heating kitchen container with improved corrosion resistance may be provided by introducing an aluminum plating layer between the ceramic coating layer and the iron-based steel sheet.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

100: steel plate containing iron-based material
200: aluminum plating layer
210: first aluminum plating layer
220: second aluminum plating layer
300: middle layer
400: metal oxide layer
410: iron-based metal oxide
420: aluminum metal oxide
421: first aluminum metal oxide
422: second aluminum metal oxide
500: ceramic coating layer

Claims (11)

Forming an aluminum plating layer on the upper and lower portions of the steel sheet including iron-based materials;
Cutting the steel plate on which the aluminum plating layer is formed to form a cut surface in which the iron-based material is exposed to the outside;
Heat-treating the cut surface to form a metal oxide layer on the cut surface;
Press-forming a steel plate having a metal oxide layer formed on the cut surface to form a kitchen container; And
Forming a ceramic coating layer on a surface exposed to the outside of a steel plate manufactured in the form of a kitchen container;
Induction heating kitchen container manufacturing method comprising a. The method of claim 1,
Induction heating kitchen container manufacturing method, characterized in that the step of forming the metal oxide layer is carried out at 500 ℃ to 700 ℃. The method of claim 1,
The ceramic coating layer is induction characterized in that it comprises any one or more of SiO ₂ , Al ₂ O ₃ , CaO, BaO, ZnO, K ₂ O, Na ₂ O, F, NiO, CoO, MnO ₂ or BeO Heating kitchen container manufacturing method. The method of claim 1,
Induction heating kitchen container manufacturing method, characterized in that the thickness of the iron-based material is 1 mm to 4 mm. The method of claim 1,
Induction heating kitchen container manufacturing method, characterized in that the thickness of the aluminum plating layer is 10 μm to 30 μm. Forming an aluminum plating layer on the upper and lower portions of the steel sheet including iron-based materials;
Cutting the steel plate on which the aluminum plating layer is formed to form a cut surface in which the iron-based material is exposed to the outside;
Heat-treating the cut surface to form a metal oxide layer on the cut surface;
Forming a ceramic coating layer on a surface exposed to the outside of a steel sheet having a metal oxide layer formed on the cut surface; And
Press-forming a steel sheet having a ceramic coating layer formed thereon to form a kitchen container;
Induction heating kitchen container manufacturing method comprising a. The method of claim 6,
Induction heating kitchen container manufacturing method, characterized in that the step of forming the metal oxide layer is carried out at 500 ℃ to 700 ℃. The method of claim 6,
The ceramic coating layer is induction characterized in that it comprises any one or more of SiO ₂ , Al ₂ O ₃ , CaO, BaO, ZnO, K ₂ O, Na ₂ O, F, NiO, CoO, MnO ₂ or BeO Heating kitchen container manufacturing method. The method of claim 6,
Induction heating kitchen container manufacturing method, characterized in that the thickness of the iron-based material is 1 mm to 4 mm. The method of claim 6,
Induction heating kitchen container manufacturing method, characterized in that the thickness of the aluminum plating layer is 10 μm to 30 μm. Induction heating kitchen container, characterized in that manufactured by the induction heating kitchen container manufacturing method of claim 1.

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