CN206761334U - Pan and cooking apparatus - Google Patents

Abstract

The utility model provides a pot and a cooking utensil, wherein, the pot includes: a pot base made of industrial pure iron; a non-stick coating arranged on the inner wall surface of the pot base; The layer is arranged on the outer wall surface of the pot base. Through this technical solution, not only the production cost of the pot is reduced, the process steps of making the pot are simplified, but also the magnetic permeability, hardness, wear resistance and non-stickiness of the pot are effectively improved, thereby improving the quality of the pot. tool life.

Description

Pots and Cooking Utensils

technical field

The utility model relates to the technical field of household appliances, more specifically, to a pot and a cooking utensil.

Background technique

There are many kinds of pots and pans on the market, and the difference is mainly reflected in the material. Aluminum alloy, stainless steel and other pots and pans have been widely used because of their mature technology and easy processing, but there are also many shortcomings. The magnetic properties are poor, and aluminum alloy products have no magnetic conductivity, so they can only be used in rice cookers with low-end chassis heating methods. In addition, long-term contact of aluminum products with food may cause certain diseases to the human body. Iron is a good magnetic material, and Chinese people have a long-term habit of using iron pots for cooking. Iron can have many beneficial effects on the human body. For example, iron pots can supplement iron, enhance human hematopoietic ability, improve immunity, and promote metabolism. . Thus, the use of iron products to manufacture pots has become a very promising development direction.

At present, there are electric cooking utensils made of iron products on the market, the main purpose of which is to use electromagnetic heating technology, and the iron cooking utensils are beneficial to the human body, so as to replace the common aluminum cooking utensils on the market. But there are two main types: one is to use conventional cast iron as the base material, and then carry out other treatments such as spraying. Because the casting process of cast iron is complicated, and the ductility of cast iron is very poor, the ductility is not strong, and problems such as crack failure are prone to occur. The second is to prepare iron coatings on aluminum and other substrates by thermal spraying, electroplating and other technologies. This solution has high cost, complicated process, and low yield rate. Generally, the coating is thin, which makes the conductivity of the pan Magnetic properties are weak. In addition, the sprayed magnetic conductive coating needs to be added with an anti-corrosion layer, otherwise the coating will corrode and fail, which will increase the production process.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art.

For this reason, the purpose of one aspect of the present utility model is to provide a pot.

The purpose of another aspect of the present utility model is to provide a cooking utensil comprising the above pot.

In order to achieve the above purpose, the embodiment of the first aspect of the present utility model provides a pot, including: a pot base made of industrial pure iron; a non-stick coating disposed inside the pot base On the wall surface; the nitride layer is arranged on the outer wall surface of the pot base; wherein, the pot base is formed by punching the base plate made of the industrial pure iron.

In the pot provided by the above-mentioned embodiments of the utility model, the pot base is formed by stamping a substrate made of industrial pure iron, and the inner and outer walls of the pot base are correspondingly provided with non-stick coatings, nitrogen layers. Through this technical solution, not only the production cost of the pot is reduced, the process steps of making the pot are simplified, but also the magnetic permeability, hardness, wear resistance and non-stickiness of the pot are effectively improved, thereby improving the quality of the pot. tool life. Specifically, since industrial pure iron has high magnetic permeability and magnetic induction intensity, the pot prepared by using the industrial pure iron has very high magnetic permeability, so that the cooking utensil using the electromagnetic heating technology The heating power is much higher than that of other iron pots, and because industrial pure iron is cheap, plastic and easy to process, it can effectively reduce the production cost of the pot and reduce the processing difficulty of the pot, and the iron element can also The human body produces very beneficial effects, such as iron supplementation. Wherein, by providing a non-stick coating on the inner wall surface of the base body of the pan, the pan has good non-stick characteristics, which improves user experience. Wherein, by arranging a nitride layer on the outer wall surface of the pan base, the surface of the pan base can be effectively improved.

In addition, the pot provided by the above-mentioned embodiment of the utility model also has the following additional technical features:

In the above technical solution, preferably, the thickness of the pot base is in the range of 5 mm to 7 mm.

In this technical solution, the thickness of the pot base is controlled within the range of 5 mm to 7 mm, which can ensure that the pot base has extremely high magnetic conductivity and good heat preservation function, and can avoid excessive thickness of the pot base The situation that causes the cost of the pot to rise occurs, and the cost is effectively saved.

In any of the above technical solutions, preferably, the non-stick coating is a ceramic non-stick coating, and the thickness of the ceramic non-stick coating is in the range of 25 μm to 35 μm.

In this technical scheme, by setting the ceramic non-stick coating on the inner wall surface of the pure iron pot base (the pot base made of industrial pure iron), not only the pot base has good non-stick property, but also It solves the problem of low hardness and easy corrosion of the base of the pure iron pan, improves the corrosion resistance of the base of the pan, greatly increases the service life of the pan, and avoids direct contact between the food to be cooked and the base of the pure iron pan , The situation that affects the taste of cooking food occurs, which improves the user experience. Among them, controlling the thickness of the ceramic non-stick coating within the range of 25 μm to 35 μm can not only avoid the poor bonding between the ceramic non-stick coating and the pan substrate due to too small thickness, but also improve the ceramic non-stick coating. The service life of the sticky coating can be improved; and the problem of poor external adhesion and increased cost of the pot caused by excessive thickness of the ceramic non-stick coating can be avoided.

It should be noted that the ceramic non-stick coating is formed by spraying the water-based ceramic coating on the inner wall surface of the pot substrate, wherein the main chemical components of the water-based ceramic coating are Si (silicon), O (oxygen), Al (aluminum), C (carbon), etc., when different fillers are added, there will be Fe (iron), Ti (titanium) and other substances. By dissolving the gel, they will be hydrolyzed and solidified at low temperature to form a paint film similar to ceramics and glass. The water-based ceramic coating uses water as the medium, which fundamentally solves the pollution of the solvent in the coating to the environment, and has no VOC (volatile organic compounds, volatile organic compounds) monomer hazards, etc., and has high temperature resistance, high hardness, environmental protection and no pollution. In particular, the water-based ceramic coating has good non-stick properties, and the hardness of the coating made of the water-based ceramic coating can reach 4H to 9H, which is much higher than that of ordinary Teflon. Sticky coating, by spraying the water-based ceramic coating on the inner wall surface of the pot base made of industrial pure iron, it not only solves the problem that the base of the pot is relatively low and easy to corrode, but also makes the base of the pot have good non-stick properties. viscosity.

In any of the above technical solutions, preferably, the ceramic non-stick coating includes a bottom oil layer and a top oil layer, the bottom oil layer is sprayed on the inner wall surface of the pan base, and the top oil layer is sprayed on the bottom on the oil layer.

In this technical scheme, in the process of preparing the ceramic non-stick coating, two sprayings are required. The first spraying is to spray the water-based ceramic paint on the surface of the pan substrate to form a primer layer, and the second spraying is to spray the water-based The ceramic paint is sprayed on the bottom oil layer to form a top oil layer, wherein, through two sprays, a bottom oil layer and a top oil layer are formed on the surface of the pan substrate in turn, so that the ceramic non-stick coating is more firmly combined with the pan substrate, and the ceramic non-stick coating is improved. The bonding force between the sticky coating and the pan substrate.

It is worth noting that after the first spraying, the pan substrate with the primer layer should be placed in a baking channel at a temperature of 30°C to 50°C for 5min to 10min, and then the second spraying , which can not only eliminate the internal stress of the bottom oil layer and avoid cracks in the bottom oil layer, but also improve the bonding force between the bottom oil layer and the surface oil layer. Among them, after the second spraying, it is necessary to form a pot with surface oil Put the substrate in a sintering channel at a temperature of 260°C to 280°C and sinter for 15min to 25min to form a ceramic non-stick coating. Put it in a heat preservation channel at a temperature of 70°C to 100°C for 8min to 10min, then heat up and sinter, so as to eliminate the internal stress of the surface oil layer, avoid cracks in the surface oil layer, and improve the bonding strength of the surface oil layer. And improve the service life of surface oil layer.

In the above technical solution, preferably, the thickness of the bottom oil layer is in the range of 15 μm to 20 μm, and the thickness of the top oil layer is in the range of 10 μm to 15 μm.

In this technical solution, the thickness of the bottom oil layer is controlled within the range of 15 μm to 20 μm, which can not only avoid the poor bonding between the ceramic non-stick coating and the pan substrate due to the thickness being too small; Excessive thickness of the bottom oil layer leads to poor adhesion of the surface oil layer. Similarly, controlling the thickness of the surface oil layer within the range of 10 μm to 15 μm can not only avoid the poor bonding between the surface oil layer and the bottom oil layer caused by too small thickness; (the part away from the bottom oil layer) the problem of poor adhesion.

In any of the above technical solutions, preferably, the nitrided layer is formed on the outer wall surface of the pan base through a gas nitriding process.

In the above technical solution, preferably, the thickness of the nitride layer is in the range of 200 μm to 500 μm.

In this technical scheme, a nitrided layer can be formed on the outer wall surface of the pan base through the gas nitriding process, and at the same time diffuse into the wall of the pan base, so that the industrial pure iron pan after nitriding has good durability. Abrasion resistance, fatigue resistance, corrosion resistance and high temperature resistance, etc.; specifically, gas nitriding is carried out on the outer surface of the pot substrate, the nitriding temperature is kept at 500 ° C ~ 700 ° C, and the holding time is 2.5 h ~ 3.5 h , the ammonia decomposition rate is 50% to 70%, so that a nitrided layer with high chemical stability is formed on the outer surface of the pot substrate after nitriding. Wherein, the thickness of the nitrided layer is in the range of 200 μm to 500 μm, and the thickness of the nitrided layer is in the range of 200 μm to 500 μm, which can not only avoid the situation of poor corrosion resistance caused by too small thickness, but also avoid nitrogen Excessive thickness of the chemical layer leads to difficult processing and increased cost of the pot.

In any of the above technical solutions, preferably, the non-stick coating is sprayed on the inner wall surface of the pan base by an air pressure spraying process.

In this technical scheme, the non-stick material is sprayed on the inner wall surface of the pot base to form a non-stick coating through an air pressure spraying process. Specifically, the airflow of compressed air is used to flow through the nozzle hole of the spray gun to form a negative pressure. The non-stick material is inhaled from the straw, sprayed and atomized through the nozzle, and the atomized non-stick material is sprayed onto the inner wall surface of the pot base to form a uniform non-stick coating, wherein, preferably, the spraying of the air pressure spraying process The parameters include: the nozzle diameter is 0.5 mm to 1.8 mm, the air pressure is 0.3Mpa to 0.5Mpa, the spray distance (the distance between the spray gun and the inner surface of the pot base) is 25cm to 35cm, and the spray angle is 60° to 90°. This parameter is sprayed to make the non-stick coating formed on the inner wall of the pan base more uniform, and the non-stick coating is more firmly combined with the inner wall of the pan base to avoid the non-stick coating from the pan base. The inner wall surface falls off, which improves the service life of the non-stick coating.

The embodiment of the second aspect of the present invention provides a cooking utensil, comprising: the pot as described in any one of the embodiments of the first aspect above.

The cooking utensil according to the embodiment of the present invention has the pot described in any of the above embodiments. Therefore, the cooking utensil of the present invention has all the beneficial effects of the pot of any of the above embodiments. Repeatedly.

In the above technical solution, preferably, the cooking appliance is an electric rice cooker or an electric pressure cooker using electromagnetic heating.

Additional aspects and advantages of the invention will become apparent in the description which follows, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic cross-sectional structure diagram of a cooker according to an embodiment of the present invention;

FIG. 2 is an enlarged structural schematic diagram of part A in FIG. 1 .

Wherein, the corresponding relationship between reference numerals and component names in Fig. 1 and Fig. 2 is:

1 pan, 10 pan base, 20 non-stick coating, 202 bottom oil layer, 204 surface oil layer, 30 nitrided layer.

detailed description

In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from those described here, therefore, the protection scope of the utility model is not limited by the following disclosure limitations of specific examples.

Cookware according to some embodiments of the present utility model will be described below with reference to the accompanying drawings.

As shown in Fig. 1 and Fig. 2, the embodiment of the first aspect of the present invention provides a pot 1, comprising: a pot base 10 made of industrial pure iron; a non-stick coating 20 arranged on The inner wall surface of the pot base 10; the nitride layer 30 is arranged on the outer wall surface of the pot base 10; wherein, the pot base 10 is formed by stamping a substrate made of industrial pure iron.

In the pot 1 provided by the above-mentioned embodiments of the utility model, the pot base 10 is formed by stamping a substrate made of industrial pure iron, and the inner and outer walls of the pot base 10 are provided with non-stick coatings. layer 20, nitride layer 30. Through this technical solution, not only the production cost of the pot 1 is reduced, the process steps of making the pot 1 are simplified, but also the magnetic permeability, hardness, wear resistance and non-stickiness of the pot 1 are effectively improved, so that The service life of the pot 1 is improved. Specifically, since industrial pure iron has high magnetic permeability and magnetic induction intensity, the pot 1 prepared by using the industrial pure iron has very high magnetic permeability, so that the pot 1 using the electromagnetic heating technology The heating power of cooking utensils is much higher than that of other iron pots 1, and because industrial pure iron is cheap, plastic and easy to process, it can effectively reduce the production cost of the pot 1 and reduce the processing difficulty of the pot 1, and Iron can also have very beneficial effects on the human body, such as iron supplementation. Wherein, by disposing the non-stick coating 20 on the inner wall surface of the pot base 10, the pot 1 has good non-stick properties, which improves user experience. Wherein, by disposing the nitride layer 30 on the outer wall surface of the pot base 10 , the surface of the pot base 10 can be effectively improved.

In addition, the pot 1 provided by the above-mentioned embodiment of the utility model also has the following additional technical features:

In the above technical solution, preferably, the thickness of the pot base 10 is in the range of 5 mm to 7 mm.

In this technical solution, the thickness of the pot base 10 is controlled within the range of 5 mm to 7 mm, which can ensure that the pot base 10 has extremely high magnetic conductivity and good heat preservation function, and can avoid the thickness of the pot base 10. The situation that the cost of the pot 1 is increased due to the excessive thickness causes the cost to be effectively saved.

In any of the above technical solutions, preferably, the non-stick coating 20 is a ceramic non-stick coating 20, and the thickness of the ceramic non-stick coating 20 is in the range of 25 μm˜35 μm.

In this technical scheme, by setting the ceramic non-stick coating 20 on the inner wall surface of the pure iron pot base 10 (the pot base 10 made of industrial pure iron), not only the pot base 10 has a good non-stick Viscous, but also solve the problem of low hardness and easy corrosion of the pure iron pan base 10, improve the corrosion resistance of the pan base 10, greatly improve the service life of the pan 1, and also avoid the food to be cooked The direct contact with the base 10 of the pure iron pan may affect the taste of cooked food and improve the user experience. Among them, controlling the thickness of the ceramic non-stick coating 20 within the range of 25 μm to 35 μm can not only avoid the situation that the combination between the ceramic non-stick coating 20 and the pan base 10 is poor due to the thickness being too small, but also improve The service life of the ceramic non-stick coating 20 is improved; and the problems of poor external adhesion and increased cost of the pot 1 caused by the excessive thickness of the ceramic non-stick coating 20 can be avoided.

It should be noted that the ceramic non-stick coating 20 is formed by spraying the water-based ceramic coating on the inner wall surface of the pot base 10, wherein the main chemical components of the water-based ceramic coating are Si (silicon), O (oxygen ), Al (aluminum), C (carbon), etc., adding different fillers, there will be Fe (iron), Ti (titanium) and other substances, which will be hydrolyzed and solidified at low temperature by dissolving the gel to form a paint similar to ceramics and glass Membrane, the water-based ceramic coating uses water as the medium, which fundamentally solves the environmental pollution caused by solvents in the coating, and has no VOC (volatile organic compounds, volatile organic compounds) monomer hazards, etc., and has high temperature resistance, high hardness, Environmental protection, non-toxic, easy coating and many other advantages, especially, the water-based ceramic coating has good non-stickiness, and the hardness of the coating made of this water-based ceramic coating can reach 4H to 9H, which is much higher than that of ordinary Teflon Long non-stick coating 20, by spraying the water-based ceramic coating on the inner wall surface of the pot base 10 made of industrial pure iron, not only solves the problem that the pot base 10 is relatively low and easy to corrode, but also makes the pot base 10 has good non-stick properties.

Further, the ceramic non-stick coating 20 includes a bottom oil layer 202 and a surface oil layer 204 , the bottom oil layer 202 is sprayed on the inner wall surface of the pan base 10 , and the top oil layer 204 is sprayed on the bottom oil layer 202 .

In this technical scheme, in the process of preparing the ceramic non-stick coating 20, two sprayings are required, the first spraying is to spray the water-based ceramic paint on the surface of the pan substrate 10 to form the bottom oil layer 202, and the second spraying The water-based ceramic coating is sprayed on the bottom oil layer 202 to form the top oil layer 204, wherein the bottom oil layer 202 and the top oil layer 204 are formed on the surface of the pan substrate 10 by two sprays, so that the ceramic non-stick coating 20 and the pan substrate 10 is combined more firmly, which improves the bonding force between the ceramic non-stick coating 20 and the pot base 10.

It is worth noting that after the first spraying, the pan base 10 with the primer layer 202 should be baked in a baking tunnel at a temperature of 30°C to 50°C for 5min to 10min, and then the second spraying process should be carried out. This will not only eliminate the internal stress of the bottom oil layer 202, avoid cracks in the bottom oil layer 202, but also improve the bonding force between the bottom oil layer 202 and the surface oil layer 204, wherein, after the second spraying, it is necessary to form The pot substrate 10 with surface oil is placed in a sintering channel at a temperature of 260°C to 280°C and sintered for 15min to 25min to form a ceramic non-stick coating 20. It should be noted that before sintering, the formed The pan base 10 with surface oil is placed in a heat preservation channel at a temperature of 70°C to 100°C for 8 minutes to 10 minutes, and then sintered at a high temperature, so as to eliminate the internal stress of the surface oil layer 204 and avoid cracks in the surface oil layer 204 , and can also improve the bonding strength of the surface oil layer 204, and improve the service life of the surface oil layer 204.

Further, the thickness of the bottom oil layer 202 is in the range of 15 μm˜20 μm, and the thickness of the surface oil layer 204 is in the range of 10 μm˜15 μm.

In this technical solution, the thickness of the bottom oil layer 202 is controlled within the range of 15 μm to 20 μm, which can not only avoid poor bonding between the ceramic non-stick coating 20 and the pan base 10 due to too small thickness; and It can also avoid the problem of poor adhesion of the surface oil layer 204 caused by the excessive thickness of the bottom oil layer 202 . In the same way, controlling the thickness of the surface oil layer 204 within the range of 10 μm to 15 μm can not only avoid the situation that the combination between the surface oil layer 204 and the bottom oil layer 202 is poor due to too small thickness; Too large results in a problem of poor adhesion on the outside (the part away from the primer layer 202).

In any of the above technical solutions, preferably, the nitride layer 30 is formed on the outer wall surface of the pot base 10 through a gas nitriding process.

In the above technical solution, preferably, the thickness of the nitride layer 30 is in the range of 200 μm to 500 μm.

In this technical solution, the nitrided layer 30 can be formed on the outer wall surface of the pan base 10 through the gas nitriding process, and at the same time diffuse into the wall of the pan base 10, so that the industrial pure iron pan 1 after nitriding treatment It has good wear resistance, fatigue resistance, corrosion resistance and high temperature resistance, etc.; specifically, gas nitriding is performed on the outer surface of the pan substrate 10, the nitriding temperature is kept at 500°C to 700°C, and the holding time is After 2.5 hours to 3.5 hours, the ammonia decomposition rate is 50% to 70%, so that a nitrided layer 30 with high chemical stability is formed on the outer surface of the pot base 10 after nitriding. Wherein, the thickness of the nitride layer 30 is in the range of 200 μm to 500 μm, and the thickness of the nitride layer 30 is in the range of 200 μm to 500 μm, which can not only avoid the situation that the thickness is too small to cause poor corrosion resistance, but also can Avoiding the problems of difficulty in processing caused by excessive thickness of the nitride layer 30 and increase in cost of the pot 1 .

In any of the above technical solutions, preferably, the non-stick coating 20 is sprayed on the inner wall surface of the pan base 10 by an air pressure spraying process.

In this technical scheme, the non-stick material is sprayed on the inner wall surface of the pot base 10 to form a non-stick coating 20 through an air pressure spraying process, specifically, the air flow of compressed air is used to flow through the nozzle hole of the spray gun to form a negative pressure, The negative pressure causes the non-stick material to be inhaled from the straw, sprayed and atomized through the nozzle, and the atomized non-stick material is sprayed onto the inner wall surface of the pot base 10 to form a uniform non-stick coating 20, wherein, preferably, the air pressure The spraying parameters of the spraying process include: the nozzle diameter is 0.5mm-1.8mm, the air pressure is 0.3Mpa-0.5Mpa, the spraying distance (the distance between the spray gun and the inner surface of the pot base 10) is 25cm-35cm, and the spraying angle is 60° ~90°, spraying with this parameter makes the non-stick coating 20 more evenly formed on the inner wall surface of the pan base 10, and the non-stick coating 20 is more firmly combined with the inner wall surface of the pan base 10 to avoid The non-stick coating 20 falls off from the inner wall surface of the pot base 10 , which improves the service life of the non-stick coating 20 .

The embodiment of the second aspect of the present utility model provides a cooking utensil (not shown in the figure), comprising: the pot 1 according to any one of the above-mentioned embodiments of the first aspect.

The cooking utensil according to the embodiment of the present utility model has the pot 1 of any of the above embodiments, therefore, the cooking utensil of the present utility model has all the beneficial effects of the pot 1 of any of the above embodiments, which are not mentioned here one by one. Repeatedly.

In the above technical solution, preferably, the cooking utensil is an electric rice cooker or an electric pressure cooker using electromagnetic heating.

Preferably, the iron content in industrial pure iron is 99.6%-99.8%.

In this technical solution, the iron content in industrial pure iron is 99.6% to 99.8%, which has high magnetic permeability and magnetic induction intensity. Therefore, the pot prepared by using this industrial pure iron has very high magnetic permeability, so that The heating power of the cooking utensils using the electromagnetic heating technology applied to the pot is much higher than that of other cooking utensils.

In the first specific implementation case of the present utility model, the preparation method of the pot includes: using a pure iron plate (iron plate made of industrial pure iron) with a purity of 99.6%, and preparing it into a pot base through stamping and grinding , the thickness of the pot is 5mm; the pot is degreased, degreased, and sanded (sand blasted); the pot is preheated at a temperature of about 45°C, and then the inner wall surface of the pot base is sprayed with air pressure Spray ceramic non-stick coating. Among them, the base oil is sprayed at 15um, then baked at 35°C for 7 minutes, and then sprayed with top oil. The thickness of the spray is 10um. The temperature is kept at 550-600°C for 3 hours, and the ammonia decomposition rate is 50%. After nitriding, the outer wall surface of the pot substrate can obtain a nitrided layer with high chemical stability.

In the second specific implementation case of the present utility model, the preparation method of the pot includes: using a pure iron plate (iron plate made of industrial pure iron) with a purity of 99.8%, and preparing it into a pot base by stamping and grinding , the thickness of the pot is 6mm; the pot is degreased, degreased, and sanded (sand blasted); the pot is preheated at a temperature of about 50°C, and then the inner wall surface of the pot base is sprayed Spray ceramic non-stick coating. Among them, the base oil is sprayed at 20um, then baked at 40°C for 5min, and then sprayed with top oil, the spray thickness is 15um, after spraying, it is kept at 80°C for 10min, and at 280°C for 15min; gas nitriding is carried out on the outside of the pot. The temperature is kept at 600-700°C for 3 hours, and the ammonia decomposition rate is 70%. After nitriding, the outer wall surface of the pot substrate can obtain a nitrided layer with high chemical stability.

Through the above two specific implementation cases, not only a pure iron pan with high magnetic permeability, high thermal insulation performance, good non-stick property, corrosion resistance, and high surface hardness can be obtained, but also has the following beneficial effects:

1) By degreasing and degreasing the inner wall surface and the outer wall surface of the pan base, impurities such as oil stains on the inner wall surface and the outer wall surface are removed, and the cleanliness of the inner wall surface is improved;

2) By using an automatic sandblasting machine to perform sandblasting on the inner wall surface and outer wall surface of the pot base, not only can the oxide film on the inner wall surface and the outer wall surface of the pot base be removed, but also compressive stress can be formed inside the wall of the pot base. , but also can make the inner wall surface and the outer wall surface of the pot base form a rough structure, which can increase the contact between the non-stick coating and the inner wall surface of the pot base, the nitride layer and the outer wall surface of the pot base area, thereby increasing the bonding force between the non-stick coating, the nitrided layer and the pan substrate, thereby further reducing the probability of the non-stick coating and the nitrided layer falling off; preferably, after sandblasting, the sprayed After the sand treatment, the fine sand attached to the inner wall surface and the outer wall surface of the pan base is blown clean to ensure the cleanliness of the inner wall surface and the outer wall surface of the pan base body, so as to facilitate the adhesion of the non-stick coating and the nitrided layer;

3) By preheating the inner wall surface of the pan base, it can not only reduce the thermal stress generated in the preparation of the non-stick coating and nitrided layer, but also improve the bonding force of the non-stick coating, nitrided layer and the pan base , and can also play a cleaning role, specifically, to remove water vapor, organic matter, etc. that may exist on the pan base.

Preferably, after sandblasting, the roughness of the inner wall surface and the outer wall surface of the pan substrate is 60 μm to 80 μm, which can not only prevent the roughness from being too small and weaken the contact between the non-stick coating and the nitrided layer and the pan substrate. Bonding force; and it can avoid the situation where the strength of the pot matrix is seriously reduced due to excessive roughness.

In the description of the utility model, unless otherwise specified and limited, the term "plurality" refers to two or more; unless otherwise specified or explained, the terms "connected", "fixed", etc. In a broad sense, for example, "connection" may be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it may be a direct connection or an indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the description of this specification, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right" etc. are based on the orientation shown in the drawings Or positional relationship, is only for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation to the utility model. limit.

In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in the present application. Novel at least one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (9)

1. A pot, characterized in that, comprising: The pot base is made of industrial pure iron; A non-stick coating is arranged on the inner wall surface of the pot base; The nitride layer is arranged on the outer wall surface of the pot base; The non-stick coating is a ceramic non-stick coating; The ceramic non-stick coating includes a bottom oil layer and a top oil layer, the bottom oil layer is sprayed on the inner wall surface of the pan base, and the top oil layer is sprayed on the bottom oil layer. 2. The pot according to claim 1, characterized in that, The thickness of the pot base is in the range of 5 mm to 7 mm. 3. The pot according to claim 1, characterized in that, The thickness of the ceramic non-stick coating is in the range of 25 μm to 35 μm. 4. The pot according to claim 1, characterized in that, The thickness of the bottom oil layer is in the range of 15 μm to 20 μm, and the thickness of the top oil layer is in the range of 10 μm to 15 μm. 5. The pot according to any one of claims 1 to 4, characterized in that, The nitrided layer is formed on the outer wall surface of the pot base through a gas nitriding process. 6. The pot according to claim 5, characterized in that, The thickness of the nitride layer is in the range of 200 μm˜500 μm. 7. The pot according to any one of claims 1 to 4, characterized in that, The non-stick coating is sprayed on the inner wall surface of the pan base through an air pressure spraying process. 8. A cooking utensil, characterized by comprising: the pot according to any one of claims 1-7. 9. The cooking appliance according to claim 8, characterized in that, The cooking utensil is an electric rice cooker or an electric pressure cooker using electromagnetic heating.