Non-stick cooker

Abstract

The utility model provides a non-stick cooker. The non-stick cooker comprises a cooker base body, a hard wear-resistant layer formed on the inner surface of the cooker base body and a non-stick layer formed by curing dipping non-stick paint, and the non-stick layer is formed on pores and the surface of the hard wear-resistant layer and serves as the inner surface of the non-stick cooker. According to the non-stick cooker, the non-stick layer is formed on the surface of the hard wear-resistant layer and serves as the inner surface of the cooker, and it is guaranteed that the non-stick cooker has a certain non-stick service life. Besides, the non-stick layer is further formed in the pores of the hard wear-resistant layer and can be protected by the hard wear-resistant layer, and the non-stick layer and the hard wear-resistant layer have stronger binding force and reduced coating pores, so that the overall structural strength of the non-stick cooker is improved, and the non-stick service life of the cooker can be further prolonged. Therefore, according to the non-stick cooker, it can be guaranteed that the non-stick cooker has the long service life.

Description

Technical Field

[0001] The present application relates to the technical field of kitchenware, and in particular to a non-stick cookware. Background Art

[0002] In the traditional cookware industry, in order to make the cookware non-stick to food, non-stick coating is usually sprayed on the surface of the cookware base material, but the service life of the cookware made in this way is usually short.

[0003] For this reason, manufacturing a non-stick cookware with a long service life is still a technical problem that needs to be paid attention to in the cookware manufacturing industry. Utility Model Content

[0004] The present application aims to at least solve the problem of poor non-stick service life of non-stick cookware in the above-mentioned prior art or related art.

[0005] To achieve the above-mentioned objectives, a first aspect embodiment of the present application provides a non-stick cookware, wherein the non-stick cookware comprises a cookware base, a hard wear-resistant layer formed on the inner surface of the cookware base, and a non-stick layer formed by curing an impregnated non-stick coating, wherein the non-stick layer is formed on the pores and surface of the hard wear-resistant layer and serves as the inner surface of the non-stick cookware.

[0006] According to the non-stick cookware provided by the embodiment of the present application, the non-stick layer is formed on the surface of the hard wear-resistant layer and used as the inner surface of the cookware, which ensures that the non-stick cookware has a certain non-stick service life. In addition, the non-stick layer is also formed in the pores of the hard wear-resistant layer, which can be protected by the hard wear-resistant layer, and can enhance the bonding force between the non-stick layer and the hard wear-resistant layer and reduce the coating pores, thereby improving the overall structural strength of the non-stick cookware, so that the non-stick service life of the non-stick cookware can be further extended. Therefore, the non-stick cookware according to the present application with such a coating structure can have a longer service life.

[0007] In some embodiments, the non-stick layer includes a first sub-layer and a second sub-layer, the first sub-layer is filled in the pores of the hard wear-resistant layer, and the second sub-layer is located on the upper surface of the hard wear-resistant layer.

[0008] In these embodiments, the second sublayer is located on the upper surface of the hard wear-resistant layer and can be directly used as the inner surface of the non-stick cookware, ensuring that the non-stick cookware has a certain non-stick performance, and the first sublayer is filled in the pores of the hard wear-resistant layer, which can effectively reduce the number of pores in the coating, prevent the corrosive medium from entering the interior through these pores and damaging the joints of the coating layers, thereby avoiding the interference of the corrosive medium on the bonding force of the non-stick cookware layers, and ensuring the durability of the non-stick cookware layers. In addition, the non-stick layer is filled in the pores of the hard wear-resistant layer, which helps to enhance the bonding force between the non-stick layer and the hard wear-resistant layer, improve the overall strength of the structure, avoid the coating from falling off or peeling off, and further extend the service life of the non-stick cookware. Therefore, the non-stick cookware with this coating structure not only has excellent non-stick performance, but also can significantly improve the durability of the coating and the overall strength of the structure by reducing the pores of the coating and enhancing the bonding force between the layers, thereby ensuring the non-stick service life of the cookware.

[0009] In some embodiments, the first sublayer is filled from the upper surface of the hard wear-resistant layer to the lower surface of the hard wear-resistant layer, so that the first sublayer is formed with sufficient depth and covers all the pores of the hard wear-resistant layer as completely as possible, which can enhance the sealing and integrity of the entire coating structure, prevent the external corrosive medium from penetrating the pores and destroying the joints of the layers, and avoid the binding force of the layers of the non-stick cookware from being disturbed by the corrosive medium. In addition, the first sublayer covers all the pores as completely as possible, which can reduce the performance differences or potential structural weaknesses caused by local pores and improve the uniformity and stability of the entire structure. In addition, the thickness of the second sublayer is 10μm-30μm. If the second sublayer is too thin, the non-stick life cannot be guaranteed; if the second sublayer is too thick, the binding force is affected and the cost in the manufacturing process is increased.

[0010] In some embodiments, the non-stick layer is a fluorocarbon coating or a polysiloxane coating.

[0011] In these embodiments, the fluorocarbon coating or the polysiloxane coating has better non-stick properties and can ensure the non-stick performance of the non-stick cookware.

[0012] In some embodiments, the coating material forming the polysiloxane coating comprises polytetrafluoroethylene, soluble polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, polyimide or polyetheretherketone; or the coating material forming the fluorocarbon coating comprises fluororesin.

[0013] In these embodiments, the coating of the corresponding specific non-stick component can be suitable as a material for forming a non-stick coating of cookware and has safety.

[0014] In some embodiments, the cookware base has a thickness of 0.1 cm to 0.5 cm.

[0015] In these embodiments, the cookware base has a suitable thickness to ensure the structural stability and durability of the cookware. In addition, the cookware base has a suitable thickness to ensure heat conduction performance, ensuring that the food is heated evenly and avoiding local overheating or overcooling. In addition, the cookware base has a suitable thickness to ensure the lightness and portability of the cookware to a certain extent.

[0016] In some embodiments, the inner surface of the cookware base, i.e., the surface in contact with the hard wear-resistant layer, is a rough surface. The rough surface helps to enhance the bonding strength between the cookware base and the hard wear-resistant layer, reduce the possibility of delamination or shedding due to external force or temperature changes, and thus extend the service life of the cookware.

[0017] In some embodiments, the cookware substrate is an aluminum substrate, an iron substrate, a magnesium substrate, a copper alloy substrate, an alumina substrate, a stainless steel substrate or a titanium substrate.

[0018] In these embodiments, the substrate of the non-stick cookware is relatively diverse, which makes the material selection of the substrate of the non-stick cookware less restricted, thereby greatly optimizing the manufacturing process of the non-stick cookware. In addition, the substrate of the non-stick cookware can be selected according to actual needs. For example, it can be selected according to the properties of the cookware that need to be highlighted.

[0019] In some embodiments, the hard wear-resistant layer includes a metal layer and / or a ceramic layer. In the case where the hard wear-resistant layer includes a metal layer and a ceramic layer, the ceramic layer is formed on the metal layer.

[0020] In these embodiments, the hard wear-resistant layer includes a metal layer and / or a ceramic layer, and the metal layer or the ceramic layer can enhance the strength of the non-stick layer thereon, thereby extending the service life of the non-stick cookware. In addition, when the hard wear-resistant layer includes a metal layer and a ceramic layer, the respective advantages of the metal and ceramic materials can be combined to significantly improve the wear resistance, corrosion resistance and bonding performance of the cookware, thereby further extending the service life of the cookware.

[0021] In some embodiments, the metal layer is a titanium layer, a titanium alloy layer, an iron layer, a stainless steel layer, a low carbon steel layer, a high carbon steel layer, a cast iron layer, a copper layer, a copper alloy layer, an aluminum layer, an aluminum alloy layer, a nickel layer or a nickel alloy layer; the ceramic layer is a titanium oxide layer, a titanium nitride layer, a titanium carbide layer, a ferroferric oxide layer, an iron oxide layer, a ferrous oxide layer, an aluminum oxide layer, a chromium oxide layer or a nickel oxide layer.

[0022] In these embodiments, the corresponding metal material has good plasticity. In this case, the metal layer formed by the metal material can ensure good bonding with the cookware substrate, and can balance the wear resistance, overall strength, thermal conductivity, weight and corrosion resistance of the non-stick cookware to a certain extent. The ceramic layer has high hardness, high wear resistance, high temperature resistance and good chemical stability, and can effectively protect the cookware from wear and corrosion. At the same time, the ceramic layer has a certain non-stick property. In the case of subsequent non-stick layer damage, the non-stick cookware can still have a certain non-stick property, ensuring the non-stick life.

[0023] In some embodiments, the hard wear-resistant layer has a thickness of 60 μm-80 μm.

[0024] In these embodiments, the hard wear-resistant layer with a thickness ranging from 60 μm to 80 μm can ensure that the non-stick cookware has sufficient wear resistance and corrosion resistance while controlling the cost, weight and thermal conductivity.

[0025] In some embodiments, dipping the non-stick coating is performed in a vacuum environment.

[0026] In these embodiments, there is no gas such as oxygen and water vapor in a vacuum state. Due to the lack of obstruction by gas molecules, the non-stick coating can flow and penetrate more smoothly to penetrate more deeply into the pores of the hard wear-resistant layer. The deep penetration not only enhances the bonding force between the non-stick layer and the hard wear-resistant layer, but also improves the stability and durability of the entire coating structure, thereby further improving the service life of the non-stick cookware. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other objects and features of the present application will become more apparent through the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] Figure 1 A schematic structural diagram of a non-stick cooker provided according to an embodiment of the present application is shown;

[0029] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at I in the middle.

[0030] Explanation of symbols

[0031] 10. Cookware base;

[0032] 20. Hard wear-resistant layer; 21. Metal layer; 22. Ceramic layer;

[0033] 30. Non-stick layer; 31. First sub-layer; 32. Second sub-layer. DETAILED DESCRIPTION

[0034] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be clear. For example, the order of operations described herein is only an example and is not limited to those orders set forth herein, but can be changed as will be clear after understanding the disclosure of the present application, except for operations that must occur in a specific order. In addition, for greater clarity and simplicity, the description of features known in the art may be omitted.

[0035] The features described herein can be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided to illustrate only some of the many possible ways to implement the methods, devices, and / or systems described herein, which will be clear after understanding the disclosure of the present application.

[0036] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more.

[0037] Although terms such as "first", "second", and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions should not be limited by these terms. Instead, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer, or first portion referred to in the examples may also be referred to as the second member, second component, second region, second layer, or second portion.

[0038] In the specification, when an element such as a layer, a region or a substrate is described as being "on", "connected to" or "mounted to" another element, the element may be directly "on", "connected to" or "mounted to" another element, or one or more other elements may be present therebetween. Conversely, when an element is described as being "directly on", "directly connected to" or "directly mounted to" another element, there may be no other elements therebetween.

[0039] The terms used herein are only used to describe various examples and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprise", "include" and "have" indicate the presence of the described features, quantities, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof. The term "plurality" represents any number of two and more than two.

[0040] The limitations of directional terms such as "upper", "lower", "top", "bottom", "height direction", etc. in this application are all based on the orientation of the product when it is placed upright in normal use.

[0041] Unless otherwise defined, all terms used herein, including technical terms and scientific terms, have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs after understanding the present invention. Unless explicitly defined as such herein, terms such as those defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant field and the present invention, and should not be interpreted in an idealized or overly formal way.

[0042] Furthermore, in the description of the examples, when it is deemed that a detailed description of well-known related components or functions will cause vague interpretation of the present invention, such detailed description will be omitted.

[0043] The following will be combined Figure 1 and Figure 2 The non-stick cookware provided by the embodiments of the present application is introduced.

[0044] According to an embodiment of the present application, a non-stick cooker is provided, wherein, as Figure 1 and Figure 2 As shown, the non-stick cookware includes a cookware base 10, a hard wear-resistant layer 20 formed on the inner surface of the cookware base 10, and a non-stick layer 30 formed by curing the impregnated non-stick coating. The non-stick layer 30 is formed on the pores and surface of the hard wear-resistant layer 20. In other words, the non-stick layer 30 can be filled in the pores of the hard wear-resistant layer 20 and formed on the surface of the hard wear-resistant layer 20, and serves as the inner surface of the non-stick cookware.

[0045] According to the non-stick cookware provided by the embodiment of the present application, the non-stick layer 30 is formed on the surface of the hard wear-resistant layer 20 and used as the inner surface of the cookware, which ensures that the non-stick cookware has a certain non-stick service life. In addition, the non-stick layer 30 is also formed in the pores of the hard wear-resistant layer 20, can be protected by the hard wear-resistant layer 20, and can enhance the bonding force between the non-stick layer 30 and the hard wear-resistant layer 20 and reduce the coating pores, thereby improving the overall structural strength of the non-stick cookware, so that the non-stick service life of the non-stick cookware can be further extended. Therefore, the non-stick cookware according to the present application with such a coating structure can have a longer service life.

[0046] As an example, the non-stick layer 30 includes a first sublayer 31 and a second sublayer 32, that is, the first sublayer 31 and the second sublayer 32 can together constitute the non-stick layer 30. Here, the first sublayer 31 and the second sublayer 32 can be respectively referred to as the first non-stick sublayer and the second non-stick sublayer, which is intended to illustrate that they can provide a preset non-stick effect. Among them, the first sublayer 31 is filled in the pores of the hard wear-resistant layer 20, and the second sublayer 32 is located on the upper surface of the hard wear-resistant layer 20 and directly serves as the inner surface of the non-stick cookware.

[0047] In these embodiments, the second sublayer 32 is located on the upper surface of the hard wear-resistant layer 20 and directly serves as the inner surface of the non-stick cookware, ensuring that the non-stick cookware has a certain non-stick performance, and the first sublayer 31 is filled in the pores of the hard wear-resistant layer 20, which can effectively reduce the number of coating pores, prevent the corrosive medium from entering the interior through these pores and damaging the joints of the coating layers, thereby avoiding the interference of the corrosive medium on the bonding force of the non-stick cookware layers, and ensuring the durability of the non-stick cookware layers. In addition, the non-stick layer 30 is filled in the pores of the hard wear-resistant layer 20, which helps to enhance the bonding force between the non-stick layer 30 and the hard wear-resistant layer 20, improve the overall strength of the structure, avoid the coating from falling off or peeling off, and further extend the service life of the non-stick cookware. Therefore, the non-stick cookware with this coating structure not only has excellent non-stick performance, but also can significantly improve the durability of the coating and the overall strength of the structure by reducing the coating pores and enhancing the interlayer bonding force, thereby ensuring the non-stick service life of the cookware.

[0048] In some embodiments, the first sublayer 31 is filled from the upper surface of the hard wear-resistant layer 20 to the lower surface of the hard wear-resistant layer 20, wherein the upper surface and the lower surface of the hard wear-resistant layer 20 are two surfaces opposite to each other in the thickness direction of the hard wear-resistant layer 20. In this way, the first sublayer 31 is formed with sufficient depth and covers all pores of the hard wear-resistant layer 20 as completely as possible, which can enhance the sealing and integrity of the entire coating structure, prevent the external corrosive medium from penetrating the pores and destroying the joints of the layers, and avoid the interference of the corrosive medium on the bonding force of the layers of the non-stick cookware. In addition, the first sublayer 31 covers all pores as completely as possible, which can reduce the performance differences or potential structural weaknesses caused by local pores and improve the uniformity and stability of the entire structure.

[0049] In some embodiments, the thickness of the second sublayer 32 is 10 μm-30 μm. If the second sublayer 32 is too thin, the non-stick life cannot be guaranteed; and if the second sublayer 32 is too thick, the bonding force is affected and the cost in the manufacturing process is increased.

[0050] In some embodiments, the non-stick layer 30 is a fluorocarbon coating or a polysiloxane coating, both of which have good non-stick properties and can ensure the non-stick performance of non-stick cookware. It should be noted that the non-stick layer 30 can be formed by curing the corresponding liquid non-stick coating in the prior art. Those skilled in the art can use the liquid non-stick coating with a predetermined content and composition in the prior art to form the non-stick layer 30 according to the present application.

[0051] As an example, a fluorocarbon coating is a layer formed by curing an impregnated fluorocarbon coating. As an example, a fluorocarbon coating can also be referred to as a fluorocarbon paint, a fluorine coating, a fluororesin coating, etc. It is a coating with fluororesin as the main film-forming substance. Specifically, the main non-stick components of a fluorocarbon coating may include polytetrafluoroethylene (PTFE) resin, fluorinated acrylic resin (PVDF) and trifluorochloroethane resin, as well as solvents, pigments, additives, and the like. Among them, the solvent may be acetone, toluene, xylene, butanone and benzene, the pigment may be titanium dioxide, chrome yellow, ultramarine, red iron oxide and black iron oxide, and the additive may be a leveling agent, a thickener, an anti-skinning agent and a desiccant. As an example, the weight of the main non-stick component accounts for 5%-30% of the total weight of the fluorocarbon coating, and the remainder is solvent, pigment and additive. Those skilled in the art can set the weight proportion of each solvent, pigment and additive according to the routine.

[0052] As an example, the polysiloxane coating is a layer formed by curing the impregnated polysiloxane coating, which is a coating with polysiloxane as the main film-forming substance. Specifically, the main non-stick component of the polysiloxane coating includes polytetrafluoroethylene, soluble polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, polyimide or polyetheretherketone, and also includes solvents and additives. Specifically, the weight of the main non-stick component accounts for 10%-25% of the total weight of the polysiloxane coating, and the balance is solvents and additives.

[0053] In some embodiments, the cookware substrate 10 is an aluminum substrate, an iron substrate, a magnesium substrate, a copper alloy substrate, an alumina substrate, a stainless steel substrate, or a titanium substrate.

[0054] In these embodiments, the substrate of the non-stick cookware is relatively diverse, which makes the material selection of the substrate of the non-stick cookware less restricted, thereby greatly optimizing the manufacturing process of the non-stick cookware. In addition, the substrate of the non-stick cookware can be selected according to actual needs. For example, it can be selected according to the properties of the cookware that need to be highlighted.

[0055] For example, when there is a large demand for lightweight cookware in the market, aluminum can be selected as the base material because it has the characteristics of low density and light weight, which is very suitable for manufacturing lightweight cookware. When it is necessary to manufacture cookware with strong corrosion resistance, materials such as magnesium base, stainless steel base or titanium base can be selected. These materials all have excellent corrosion resistance and can maintain the integrity and stability of the cookware during long-term use, ensuring the service life of non-stick cookware.

[0056] In some embodiments, the cookware base 10 has a preset thickness. As an example, the thickness of the cookware base 10 can be 0.1 cm-0.5 cm. The cookware base has a suitable thickness to ensure the structural stability and durability of the cookware. In addition, the cookware base has a suitable thickness to ensure heat conduction performance, ensure that the food is heated evenly, and avoid local overheating or overcooling. In addition, the cookware base has a suitable thickness to ensure the lightness and portability of the cookware to a certain extent.

[0057] In some embodiments, the surface of the cookware base 10 that contacts the hard wear-resistant layer 20 is a rough surface.

[0058] In these embodiments, the rough surface helps to enhance the bonding strength between the cookware base 10 and the hard wear-resistant layer 20, and reduces the possibility of delamination or shedding due to external force or temperature change, thereby extending the service life of the cookware.

[0059] In some embodiments, the hard wear-resistant layer 20 can be a single-layer structure or a multi-layer structure. In the case where the hard wear-resistant layer 20 is a multi-layer structure, a metal layer can be formed by a metal with good plasticity to ensure the bonding force between the layers. As an example, the hard wear-resistant layer 20 includes a metal layer 21 and a ceramic layer 22 located on the metal layer 21, wherein the metal layer 21 can serve as the basis of the hard wear-resistant layer and can have a relatively good bonding force with the metal matrix, and the ceramic layer 22 can enhance the wear resistance and corrosion resistance of the cookware, prevent the surface of the cookware from being corroded by acidic and alkaline substances, thereby extending the service life of the cookware.

[0060] As an example, the hard wear-resistant layer 20 includes a metal layer 21 and / or a ceramic layer 22 . In the case where the hard wear-resistant layer 20 includes the metal layer 21 and the ceramic layer 22 , the ceramic layer 22 is formed on the metal layer 21 .

[0061] In these embodiments, the hard wear-resistant layer 20 includes a metal layer 21 and / or a ceramic layer 22, and the metal layer 21 or the ceramic layer 22 can enhance the strength of the non-stick layer 30 thereon, thereby extending the service life of the non-stick cookware. In addition, when the hard wear-resistant layer 20 includes a metal layer 21 and a ceramic layer 22, the respective advantages of the metal and ceramic materials can be combined to significantly improve the wear resistance, corrosion resistance and bonding performance of the cookware, thereby further extending the service life of the cookware.

[0062] In some embodiments, the metal layer 21 is a titanium layer, a titanium alloy layer, an iron layer, a stainless steel layer, a low carbon steel layer, a high carbon steel layer, a cast iron layer, a copper layer, a copper alloy layer, an aluminum layer, an aluminum alloy layer, a nickel layer or a nickel alloy layer; the ceramic layer 22 is a titanium oxide layer, a titanium nitride layer, a titanium carbide layer, a ferroferric oxide layer, an iron oxide layer, a ferrous oxide layer, an aluminum oxide layer, a chromium oxide layer or a nickel oxide layer.

[0063] In these embodiments, the corresponding metal material has good plasticity. In this case, the metal layer 21 formed by the metal material can ensure good bonding with the cookware base 10, and can balance the wear resistance, overall strength, thermal conductivity, weight and corrosion resistance of the non-stick cookware to a certain extent. The ceramic layer 22 has high hardness, high wear resistance, high temperature resistance and good chemical stability, and can effectively protect the cookware from wear and corrosion. At the same time, the ceramic layer has a certain non-stick property. In the case of subsequent damage to the non-stick layer 30, the non-stick cookware can still have a certain non-stick property, ensuring the non-stick life.

[0064] According to the present application, different metal layers and ceramic layers can be combined to obtain non-stick cookware with different properties according to actual needs. It should be noted that the combination can be based on conventional methods, and the present application does not limit the specific combination form.

[0065] In some embodiments, the hard wear-resistant layer 20 has a thickness of 60 μm-80 μm.

[0066] In these embodiments, although a too thick hard wear-resistant layer 20 can improve the wear resistance of the non-stick cookware, it will increase the weight and manufacturing cost of the cookware, and may even affect the thermal conductivity of the cookware. On the other hand, a too thin hard wear-resistant layer 20 may not meet the requirements of long-term use and is prone to wear and damage. Therefore, a hard wear-resistant layer 20 with a thickness range of 60μm-80μm can ensure that the non-stick cookware has sufficient wear resistance and corrosion resistance, while controlling the cost, weight and thermal conductivity.

[0067] In some embodiments, the non-stick layer 30 is formed by dipping a non-stick coating and then curing the non-stick coating. The dipping of the non-stick layer 30 is performed in a vacuum environment.

[0068] In these embodiments, there is no gas such as oxygen and water vapor in a vacuum state. Due to the absence of gas molecules, the non-stick coating can flow and penetrate more smoothly to penetrate more deeply into the pores of the hard wear-resistant layer. The deep penetration not only enhances the bonding force between the non-stick layer 30 and the hard wear-resistant layer 20, but also improves the stability and durability of the entire coating structure, thereby further improving the service life of the non-stick cookware.

[0069] According to an embodiment of the present application, a method for manufacturing a non-stick cooker is provided, comprising:

[0070] Step S101, providing a cooker base.

[0071] Step S102, forming a hard wear-resistant layer on the cookware base.

[0072] Step S103, forming a non-stick layer on the hard wear-resistant layer by using a non-stick coating through a vacuum infiltration process, so that the non-stick layer fills the pores of the hard wear-resistant layer and is formed on the surface of the hard wear-resistant layer.

[0073] In some embodiments, the hard wear-resistant layer includes a metal layer and a ceramic layer, wherein the metal layer is formed on the cookware base body, and the ceramic layer is formed on the metal layer.

[0074] As an example, a method for manufacturing a cookware includes the following steps:

[0075] Sheet stretching and forming → degreasing, cleaning and drying → sandblasting / shot blasting → hot / cold spraying of metal powder → hot / cold spraying of ceramic powder → degreasing, cleaning and drying → vacuum impregnation → centrifugal drying → high temperature curing. It should be noted that sheet stretching and forming, degreasing, cleaning and drying, and sandblasting / shot blasting are conventional processes and do not require special explanation.

[0076] According to some embodiments of the present application, the cookware substrate may be an aluminum substrate, and the surface of the aluminum substrate may be roughened in advance, specifically, conventional treatments such as sandblasting, shot blasting, sandblasting, etching, embossing, etc. After completing the above conventional treatments, the surface of the aluminum substrate is chemically treated, such as degreasing, cleaning, and drying. The above are conventional processes and will not be elaborated in detail.

[0077] According to the present application, the hard wear-resistant layer can be formed by thermal spraying or cold spraying, wherein thermal spraying includes arc spraying, supersonic flame spraying, plasma spraying, etc., and cold spraying includes high-pressure cold spraying or low-pressure cold spraying.

[0078] Taking thermal spraying as an example, the pre-treated surface can be subjected to two layers of thermal spraying, namely, a thermal spraying metal layer and a thermal spraying ceramic layer. The metal layer is formed as a bottom bonding layer, which can form a good bond with the cookware base, and the ceramic layer can be formed into a wear-resistant and high-hardness layer to ensure the wear resistance of the cookware.

[0079] As an example, the material for the sprayed metal layer can be titanium powder, the powder particle size can be 150μm-200μm, the spraying voltage can be 30V-40V, the spraying current can be 350A-500A, the spraying power can be 10KW-15KW, and the spraying thickness can be 30μm-100μm, preferably, 30μm-40μm.

[0080] As an example, the material for spraying the ceramic layer can be titanium oxide powder, the powder particle size can be 150μm-200μm, the spraying voltage can be 50V-60V, the spraying current can be 500A-600A, the spraying power can be 25KW-36KW, and the spraying thickness can be 30μm-100μm, preferably, 30μm-40μm.

[0081] According to the present application, after forming the hard wear-resistant layer, a non-stick coating is used to infiltrate the hard wear-resistant layer with certain pores through vacuum impregnation treatment, and the impregnation product is cured at high temperature to finally achieve a highly wear-resistant and durable non-stick food non-stick coating. Specifically, the non-stick coating is completely covered on the surface of the hard wear-resistant layer, and the high-pressure sealed container is closed and vacuum impregnation treatment is performed. After impregnation, the surface of the workpiece is polished to remove excess uneven parts.

[0082] As an example, the non-stick coating may be a fluorocarbon coating or a polysiloxane coating used in the prior art.

[0083] As an example, the vacuum degree of vacuum infiltration may be 100Pa-150Pa, the infiltration pressure may be 0.4-0.6MPa, the infiltration time may be 15-25min, and the infiltration temperature may be room temperature.

[0084] According to the present application, the method for manufacturing the cookware further comprises a centrifugal drying step, which can prevent the non-stick coating from dripping on the surface of the formed coating. As an example, the drying speed can be 120-300 rpm.

[0085] According to the present application, the method for manufacturing the cookware further includes a high temperature curing step, wherein the high temperature curing step can be achieved by placing the vacuum impregnated cookware in a sintering furnace and setting the curing parameters according to the curing characteristics of the corresponding non-stick coating. As an example, the curing temperature of the fluorocarbon coating is 400-430°C and the time is 3-5 minutes, and the curing temperature of the polysiloxane coating is 240°C-300°C and the time is 10-15 minutes.

[0086] According to the present application, the vacuum infiltration method of the non-stick coating can make the non-stick coating completely penetrate the thermal spray coating or the cold spray coating (hard wear-resistant layer), greatly improving the density, corrosion resistance, and wear resistance and non-stick properties of the film layer.

[0087] According to the present application, by means of thermal spraying or cold spraying, metal powder is sprayed to form a bottom bonding layer, and ceramic powder is sprayed to form a wear-resistant and high hardness layer. Then, through vacuum infiltration treatment, the non-stick coating is infiltrated into the thermal spray coating or cold spray coating with certain porosity, and the product after the infiltration treatment is cured at high temperature to finally achieve a highly wear-resistant and long-lasting non-stick food coating.

[0088] According to the present application, the impregnation liquid can be recycled without the need for atomization spraying, and there is no environmental pressure.

[0089] Although the embodiments of the present application have been described in detail above, those skilled in the art may make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the present application. However, it should be understood that, in the opinion of those skilled in the art, these modifications and variations will still fall within the spirit and scope of the embodiments of the present application defined by the claims.

Claims

1. A non-stick cooker, characterized in that: include: A cookware base (10), a hard wear-resistant layer (20) formed on the inner surface of the cookware base (10), and a non-stick layer (30) formed by impregnating a non-stick coating and curing it, wherein the non-stick layer (30) is formed on the pores and surface of the hard wear-resistant layer (20) and serves as the inner surface of the non-stick cookware.

2. The non-stick cooker according to claim 1, characterized in that: The non-stick layer (30) comprises a first sublayer (31) and a second sublayer (32), wherein the first sublayer (31) is filled in the pores of the hard wear-resistant layer (20), and the second sublayer (32) is located on the upper surface of the hard wear-resistant layer (20).

3. The non-stick cooker according to claim 2, characterized in that: The first sub-layer (31) is filled from the upper surface of the hard wear-resistant layer (20) to the lower surface of the hard wear-resistant layer (20), and / or the thickness of the second sub-layer (32) is 10 μm-30 μm.

4. The non-stick cooker according to claim 1, characterized in that: The non-stick layer (30) is a fluorocarbon coating or a polysiloxane coating.

5. The non-stick cookware according to claim 4, characterized in that: The coating material forming the polysiloxane coating comprises one of polytetrafluoroethylene, soluble polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, polyimide and polyetheretherketone; The coating material forming the fluorocarbon coating layer includes a fluororesin.

6. The non-stick cooker according to claim 1, characterized in that: The thickness of the cookware base (10) is between 0.1 cm and 0.5 cm; and / or the inner surface of the cookware base (10) is a rough surface; and / or the cookware base (10) is an aluminum base, an iron base, a magnesium base, a copper alloy base, an aluminum oxide base, a stainless steel base or a titanium base.

7. The non-stick cooker according to claim 1, characterized in that: The hard wear-resistant layer (20) comprises a metal layer (21) and / or a ceramic layer (22); when the hard wear-resistant layer (20) comprises a metal layer (21) and a ceramic layer (22), the ceramic layer (22) is formed on the metal layer (21).

8. The non-stick cookware according to claim 7, characterized in that: The metal layer (21) is a titanium layer, a titanium alloy layer, an iron layer, a stainless steel layer, a low carbon steel layer, a high carbon steel layer, a cast iron layer, a copper layer, a copper alloy layer, an aluminum layer, an aluminum alloy layer, a nickel layer or a nickel alloy layer; the ceramic layer (22) is a titanium oxide layer, a titanium nitride layer, a titanium carbide layer, a ferroferric oxide layer, a ferrous oxide layer, a aluminum oxide layer, a chromium oxide layer or a nickel oxide layer.

9. The non-stick cookware according to claim 1, characterized in that: The thickness of the hard wear-resistant layer (20) is between 60 μm and 80 μm.

10. The non-stick cookware according to any one of claims 1 to 9, characterized in that: The impregnation of the non-stick coating is performed in a vacuum environment.

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