Cooker

Abstract

The utility model provides a cooker. The cooker comprises an aluminum substrate and a non-stick layer arranged on the inner surface of the aluminum substrate, the non-stick layer comprises a cold spraying metal layer arranged on the aluminum substrate and a plasma titanium layer arranged on the cold spraying metal layer, the hardness of the cold spraying metal layer is larger than that of the aluminum substrate, the surface layer of the plasma titanium layer comprises a first nitriding area, and the surface layer of the plasma titanium layer comprises a second nitriding area. The surface of the first nitrided area serves as the inner surface of the cooker. The cooker provided by the utility model can simultaneously have various excellent performances such as non-stick performance, corrosion resistance, wear resistance, light weight and no coating (no organic coating is used).

Description

Technical Field

[0001] The present application relates to the technical field of cookers, and in particular to a cooker. Background Art

[0002] Although aluminum pans are lightweight, they are not heat-resistant and easily corroded, resulting in limited non-stick properties. Existing aluminum alloy non-stick pans are typically coated with a liquid organic coating (e.g., polytetrafluoroethylene) to prevent sticking during cooking and facilitate cleaning. However, these coatings are not wear-resistant or heat-resistant, and can easily fall off due to wear and tear from spatulas over extended use, as well as deteriorate due to high temperatures, resulting in a short service life.

[0003] To this end, it is extremely necessary to develop a non-stick pan that has multiple properties such as non-stick performance, corrosion resistance, wear resistance, light weight and no coating (no organic coating is used). Utility Model Content

[0004] Therefore, the purpose of this application is to provide a cooker to solve the problem that the cookers in the prior art cannot simultaneously have multiple properties such as non-stick performance, corrosion resistance, wear resistance, light weight and no coating (without using organic coating).

[0005] An object of the first aspect of the present application is to provide a cooker, wherein the cooker includes an aluminum substrate and a non-stick layer formed on the inner surface of the aluminum substrate, the non-stick layer includes a cold-sprayed metal layer arranged on the aluminum substrate and a plasma titanium layer arranged on the cold-sprayed metal layer, wherein the hardness of the cold-sprayed metal layer is greater than the hardness of the aluminum substrate, the surface layer of the plasma titanium layer includes a first nitrided region, and the surface of the first nitrided region serves as the inner surface of the cooker.

[0006] According to the cookware of the present application, the surface layer of the plasma titanium layer includes a first nitrided region, and the surface of the first nitrided region serves as the inner surface of the cookware, which can ensure the corrosion resistance, wear resistance and non-stick performance of the cookware. Since the cookware includes an aluminum substrate, the aluminum substrate is relatively lightweight, so the weight of the cookware can be reduced to a certain extent. Moreover, each layer of the cookware is metal and does not contain an organic coating layer, which can ensure the safety of the user and reduce the psychological burden of the user. In addition, the non-stick layer includes two metal layers, which can further improve the hardness and strength. In this way, the cookware can simultaneously have many excellent properties such as non-stick performance, corrosion resistance, wear resistance, light weight and no coating (no organic coating is used).

[0007] In some embodiments, the cold-sprayed metal layer is an iron layer, a zinc layer, an aluminum layer, a titanium layer or a nickel layer. The above metal layer can meet the requirements of the cookware for improving the hardness, so that the cookware can withstand high temperatures during manufacturing and avoid deformation of the aluminum substrate during the manufacturing process of the cookware.

[0008] In some embodiments, the cold-sprayed metal layer is formed of metal particles having a particle size in the range of 5 microns to 45 microns. Particles within this size range can retain sufficient kinetic energy to undergo plastic deformation when impacting the aluminum substrate while ensuring uniformity and density of the coating.

[0009] In some embodiments, the thickness of the aluminum substrate is H1, wherein 2.6 mm ≤ H1 ≤ 3.0 mm; and / or the thickness of the cold-sprayed metal layer is H2, wherein 30 microns ≤ H2 ≤ 150 microns; and / or the thickness of the plasma titanium layer is H3, wherein 10 microns ≤ H3 ≤ 30 microns; and / or the formation depth of the first nitrided region is H4, wherein 5 microns ≤ H4 ≤ 20 microns.

[0010] In these embodiments, each layer has an appropriate thickness, which can ensure that the cookware has excellent performance in terms of non-stick properties, wear resistance, and corrosion resistance.

[0011] In some embodiments, the plasma titanium layer is formed of titanium particles having a particle size in the range of 20 microns to 45 microns. Particles in this size range can have a good bond with the cold sprayed metal layer.

[0012] In these embodiments, the first nitrided region with the above pore distribution is relatively dense, which can ensure the corrosion resistance, wear resistance and non-stick performance of the cookware.

[0013] In some embodiments, the cookware further includes a magnetic conductive layer formed on the outer surface of the aluminum substrate, and the magnetic conductive layer is at least one of an iron layer, a nickel layer, and a cobalt layer.

[0014] In these embodiments, the cooker can be adapted to both induction cookers and open flame heat sources, thereby providing users with more cooking options and flexibility.

[0015] In some embodiments, the cooker further includes a protective layer, which covers the outer side of the magnetic conductive layer and is used to protect the magnetic conductive layer to prevent the magnetic conductive layer from being directly exposed to the outside and being damaged or having the risk of magnetic leakage.

[0016] In some embodiments, the protective layer is an aluminum layer.

[0017] In these embodiments, the protective layer is an aluminum layer, and the surface of the aluminum layer can form an aluminum oxide layer after subsequent oxidation treatment. In this way, the protective layer can be more resistant to high temperature and corrosion. In addition, the aluminum layer as a protective layer can make the cooker lighter and the performance more stable.

[0018] In some embodiments, the outer layer of the protective layer includes a second nitrided region, which can further enhance the hardness, wear resistance, and corrosion resistance of the protective layer.

[0019] In some embodiments, the non-stick layer has a porous structure, and the porous structure is filled with oil.

[0020] In these embodiments, the porous structure is filled with oil, which can further improve the non-stick performance (initial non-stickiness and long-lasting non-stickiness) due to the oil film non-stick principle.

[0021] In some embodiments, the oil substance is animal oil, vegetable oil, silicone oil or polysiloxane. These oil substances can effectively fill into the porous structure of the non-stick layer and gradually release in the later stage to form an oil film to optimize the non-stick property. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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:

[0023] Figure 1 is a schematic cross-sectional structural diagram of a cooker according to an embodiment of the present application;

[0024] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at point I.

[0025] Explanation of symbols

[0026] 10. Aluminum matrix;

[0027] 20. Cold sprayed metal layer;

[0028] 30. Plasma titanium layer;

[0029] 31. First nitriding region;

[0030] 40. Magnetic conductive layer; 50. Protective layer; 51. Second nitrided region. DETAILED DESCRIPTION

[0031] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be clear after understanding the disclosure of the present application. For example, the order of operations described herein is merely 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 conciseness, descriptions of features known in the art may be omitted.

[0032] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided to illustrate only some of the many possible ways to implement the methods, devices, and / or systems described herein, many of which will become apparent upon understanding the disclosure of this application.

[0033] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more.

[0034] 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 used solely to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, what is referred to as a first member, first component, first region, first layer, or first portion in the examples described herein may also be referred to as a second member, second component, second region, second layer, or second portion without departing from the teachings of the examples.

[0035] 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” the other 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, no other elements may be present therebetween.

[0036] The terms used herein are only used to describe various examples and are not intended to limit this application. 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 their combinations, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements and / or their combinations. The term "plurality" represents two and any number greater than two.

[0037] The definitions of directional terms such as "upper," "lower," "interior," and "exterior" in this application are based on the orientation of the kitchen appliance in normal use. This definition helps ensure that readers or users clearly understand the relative positions of various components and functions, and should not be construed as a limitation of this application.

[0038] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art to which this application belongs after understanding this application. Unless explicitly defined as such herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this application, and should not be interpreted in an idealized or overly formal manner.

[0039] Furthermore, in the description of the examples, when it is deemed that a detailed description of well-known related components or functions will cause an ambiguous interpretation of the present application, such detailed description will be omitted.

[0040] The following will be combined Figures 1 to 2 The cookware provided in the embodiments of the present application is described below. The cookware provided in the present application not only has excellent corrosion resistance, wear resistance, and non-stick properties, but also ensures lightness and safety. By combining an aluminum substrate and a specific metal layer structure, it aims to achieve excellent multi-faceted performance.

[0041] According to an embodiment of the present application, a cooker is provided, wherein the cooker includes an aluminum substrate and a non-stick layer arranged on the inner surface of the aluminum substrate, wherein the non-stick layer includes a cold-sprayed metal layer arranged on the aluminum substrate and a plasma titanium layer arranged on the cold-sprayed metal layer, wherein the hardness of the cold-sprayed metal layer is greater than the hardness of the aluminum substrate, the surface layer of the plasma titanium layer includes a first nitrided region, and the surface of the first nitrided region serves as the inner surface of the cooker.

[0042] According to the cookware of the present application, the surface layer of the plasma titanium layer includes a first nitrided region, and the surface of the first nitrided region serves as the inner surface of the cookware, which can ensure the corrosion resistance, wear resistance and non-stick performance of the cookware. Since the cookware includes an aluminum substrate, the aluminum substrate is relatively lightweight, so the weight of the cookware can be reduced to a certain extent. Moreover, each layer of the cookware is metal and does not contain an organic coating layer, which can ensure the safety of the user and reduce the psychological burden of the user. In addition, the non-stick layer includes two metal layers, which can further improve the hardness and strength. In this way, the cookware can simultaneously have many excellent properties such as non-stick performance, corrosion resistance, wear resistance, light weight and no coating (no organic coating is used).

[0043] According to the present application, a cold-sprayed metal layer can be first formed on an aluminum substrate by cold spraying. In this way, a coating can be attached to the aluminum substrate at a lower temperature. Then, a plasma titanium layer is formed on the cold-sprayed metal layer. Since the hardness of the cold-sprayed metal layer is greater than the hardness of the aluminum substrate, it can withstand the high temperature of the plasma, thereby avoiding deformation of the cookware during the manufacturing process and ensuring the yield rate of the manufactured cookware.

[0044] In some embodiments, the cold-sprayed metal layer includes an iron layer, a zinc layer, an aluminum layer, a titanium layer or a nickel layer. The above metal layer can meet the requirements of the cookware for improving the hardness, so that the cookware can withstand high temperatures during manufacturing and avoid deformation during the manufacturing process.

[0045] In some embodiments, the cold-sprayed metal layer is formed from metal particles having a particle size in the range of 5 microns to 45 microns. Particles within this size range can retain sufficient kinetic energy to undergo plastic deformation upon impact with the aluminum substrate while ensuring uniformity and density of the coating.

[0046] In some embodiments, the hardness of the cold-sprayed metal layer is less than the hardness of the plasma titanium layer, that is, the closer to the inner surface of the cookware, the greater the hardness. In this way, the wear resistance of the cookware is better, which can ensure that the cookware is more resistant to spatula wear during use, especially more resistant to steel spatula wear.

[0047] In some embodiments, the thickness of the aluminum substrate is H1, wherein 2.6 mm ≤ H1 ≤ 3.0 mm, which can make the cookware lighter.

[0048] In some embodiments, the thickness of the cold-sprayed metal layer is H2, wherein 30 microns ≤ H2 ≤ 150 microns. Here, the cold-sprayed metal layer has a certain thickness, which can ensure that the cookware has good hardness and heat conduction efficiency, and can control production costs to maximize cost-effectiveness.

[0049] In some embodiments, the thickness of the plasma titanium layer is H3, where 10 microns ≤ H3 ≤ 30 microns. The thickness of the plasma titanium layer is determined to balance durability, heat conduction efficiency, cost, and non-stick performance.

[0050] In some embodiments, the first nitrided region is formed to a depth H4, where 5 micrometers ≤ H4 ≤ 20 micrometers. Here, the first nitrided region has a certain formation depth to ensure corrosion resistance, wear resistance and non-stick properties of the cookware.

[0051] According to the present application, the cooker can be used in an induction cooker. In this case, the outer surface of the cooker is provided with a magnetic conductive layer or the cooker itself is magnetically conductive.

[0052] In some embodiments, the cookware further comprises a magnetic conductive layer formed on the outer surface of the aluminum substrate, and the magnetic conductive layer is at least one of an iron layer, a nickel layer and a cobalt layer.

[0053] In these embodiments, the cooker can be adapted to both induction cookers and open flame heat sources, thereby providing users with more cooking options and flexibility.

[0054] In some embodiments, the cooker further includes a protective layer, which covers the outer side of the magnetic conductive layer and is used to protect the magnetic conductive layer to prevent the magnetic conductive layer from being directly exposed to the outside and being damaged or having the risk of magnetic leakage.

[0055] In these embodiments, the protective layer is an aluminum layer, and the surface of the aluminum layer can form an aluminum oxide layer after subsequent oxidation treatment. In this way, the protective layer can be more resistant to high temperature and corrosion. In addition, the aluminum layer as a protective layer can make the cooker lighter and the performance more stable.

[0056] In some embodiments, the outer layer of the protective layer includes a second nitrided region, which can further enhance the hardness, wear resistance, and corrosion resistance of the protective layer.

[0057] like Figure 1 and Figure 2 As shown, the cookware includes an aluminum substrate 10 and a non-coating layer with a laminated structure formed on the inner surface of the aluminum substrate 10, wherein the non-coating layer includes a cold-sprayed metal layer 20 arranged on the inner surface of the aluminum substrate 10 and a plasma titanium layer 30 arranged on the cold-sprayed metal layer 20, wherein the surface layer of the plasma titanium layer 30 includes a first nitrided region 31, and the surface of the first nitrided region 31 serves as the inner surface of the cookware.

[0058] In some embodiments, the cookware further includes a magnetic conductive layer 40 formed on the outer surface of the aluminum substrate 10 and a protective layer 50 covering the outer side of the magnetic conductive layer 40 , and the surface of the protective layer 50 includes a second nitrided region 51 .

[0059] In some embodiments, the non-stick layer has a porous structure filled with oil, which can further improve the non-stick performance (initial non-stickiness and long-lasting non-stickiness) due to the oil film non-stick principle.

[0060] According to a second aspect of the present application, a method for manufacturing a cooker is provided, wherein the method comprises:

[0061] Step S101 : cold spraying to form a cold sprayed metal layer on an aluminum substrate.

[0062] Step S102 : plasma spraying to form a plasma titanium layer on the cold-sprayed metal layer.

[0063] Step S103 : Nitriding treatment is performed so that the surface layer of the plasma titanium layer includes a first nitrided region.

[0064] According to the manufacturing method of the cookware of the present application, the surface layer of the plasma titanium layer includes a first nitrided region, and the surface of the first nitrided region serves as the inner surface of the cookware, which can ensure the corrosion resistance, wear resistance and non-stick performance of the cookware. Since the cookware includes an aluminum substrate, the aluminum substrate is relatively lightweight, so the weight of the cookware can be reduced to a certain extent. In addition, each layer on the cookware is metal and does not contain an organic coating layer, which can ensure the safety of the user and reduce the psychological burden of the user. In this way, the cookware can simultaneously have multiple excellent properties such as non-stick performance, corrosion resistance, wear resistance, lightness and no coating (no organic coating is used). In addition, a cold-sprayed metal layer is first formed on the aluminum substrate by cold spraying. In this way, the coating can be attached to the aluminum substrate at a lower temperature. Then, a plasma titanium layer is formed on the cold-sprayed metal layer. Since the hardness of the cold-sprayed metal layer is greater than that of the aluminum substrate, it can withstand the high temperature of the plasma, thereby avoiding deformation of the cookware during the manufacturing process and ensuring the yield rate of the manufactured cookware.

[0065] Hereinafter, the method for manufacturing a cooker according to the present application will be described in conjunction with specific embodiments.

[0066] Provide aluminum substrate

[0067] According to the present application, the aluminum substrate has a basic structure including a receiving cavity formed by stretching or spinning an aluminum alloy or aluminum. In some embodiments, the thickness of the aluminum substrate is H1, where 2.6 mm ≤ H1 ≤ 3.0 mm. Such a thickness can reduce the weight of the resulting cookware.

[0068] In some embodiments, the inner surface of the aluminum substrate has a rough structure of 3 μm to 6 μm. For example, the aluminum substrate is subjected to a pressing process to form a rough structure with a surface roughness of 3 μm to 6 μm. This roughness can enhance the bonding strength of the cold-sprayed metal layer, further enhancing the overall bonding strength of the non-stick layer thereon.

[0069] Forming cold sprayed metal layer

[0070] According to the present application, cold spraying metal forms a cold spraying metal layer on an aluminum substrate. Specifically, high-pressure gas (such as nitrogen, helium, etc.) is used to accelerate metal particles to a supersonic state, and then impact the surface of the aluminum substrate. During the impact process, due to the huge impact energy, the metal particles undergo a large degree of plastic deformation and form a metallurgical bond or mechanical bond with the surface of the aluminum substrate, thereby depositing a dense accumulation layer on the substrate as a cold spraying metal layer. Among them, metallurgical bonding is achieved by atomic diffusion and chemical reaction between the metal particles and the aluminum substrate, while mechanical bonding is achieved by plastic deformation of the metal particles and embedding into the substrate surface. Both of these bonding methods can provide strong coating adhesion. In addition, the cold spraying metal layer formed by cold spraying has excellent properties such as wear resistance, corrosion resistance and high temperature stability. The improvement of these properties has enabled the aluminum substrate to be applied in more fields and extended its service life.

[0071] In some embodiments, the metal particles are iron particles. For example, the iron particles may be spherical or ellipsoidal particles. This allows for a denser cold-sprayed metal layer to be formed through spherical close packing. For example, the metal particles have a particle size in the range of 5 microns to 45 microns. Particles within this size range retain sufficient kinetic energy to undergo plastic deformation upon impact with the aluminum substrate while ensuring uniformity and density of the coating.

[0072] According to a specific example, the parameters of the cold spray process can be: the cold spray carrier gas is nitrogen, the carrier gas pressure is 10MPa-15MPa, the preheating temperature is 250℃-350℃, the spraying distance is 25mm-35mm, the powder feeding rate is 10g / min-90g / min, the spray gun movement rate is 1mm / s-3mm / s, and the substrate rotation speed is 80r / min-120r / min.

[0073] Formation of plasma titanium layer

[0074] According to the present application, plasma spraying is used to form a plasma titanium layer on the cold-sprayed metal layer. Specifically, the plasma titanium layer is formed by passing titanium particles through plasma. In some embodiments, the parameters of the plasma spraying process can be: current of 80A-100A; voltage of 60V-90V; main gas (argon) flow rate of 1200L / h-1800L / h; hydrogen flow rate of 40L / h-100L / h; powder feed gas flow rate of 400L / h-600L / h; powder feed rate of 50g / min-100g / min; spraying distance (distance between the nozzle and the workpiece) of 10cm-15cm; spraying angle of 45°-80°; and workpiece temperature of room temperature.

[0075] In some embodiments, the plasma titanium layer is formed from titanium particles. The titanium particles can be spherical or ellipsoidal, thereby forming a denser plasma titanium layer through spherical close packing. The titanium particles have a particle size range of 20 microns to 45 microns, which ensures good bonding with the cold-sprayed metal layer.

[0076] In some embodiments, the surface of the plasma titanium layer has a rough structure. For example, after obtaining the plasma titanium layer, the plasma titanium layer can be sanded to obtain a plasma titanium layer having a rough surface structure. The rough surface structure of the sanded plasma titanium layer can increase the bonding strength between the nitride layer and the titanium layer, thereby improving the performance of the coating of the entire cookware.

[0077] Forming magnetic conductive layer and protective layer

[0078] According to the present application, the method for manufacturing the cookware further includes sandblasting the outer surface of the aluminum substrate. This step is intended to enhance the surface roughness and provide a better adhesion foundation for the subsequent setting of the magnetic conductive layer.

[0079] According to the present application, the method for manufacturing cookware further includes forming a magnetic conductive layer on the outer surface of the aluminum substrate. Specifically, iron wire, cobalt wire or nickel wire is sprayed to form a magnetic conductive layer on the outer surface of the aluminum substrate, so that the cookware can be used on an induction cooker.

[0080] In some embodiments, the method for manufacturing the cookware further includes providing a protective layer on the outer side of the magnetic conductive layer. Specifically, the protective layer is provided on the outer side of the magnetic conductive layer by spraying aluminum wire. As an example, the thickness of the protective layer can be 0.3 mm to 0.5 mm, the diameter of the aluminum wire can be 1.5 mm to 2.0 mm, and the spraying method is arc spraying.

[0081] In these embodiments, the protective layer can prevent the magnetic conductive layer from contacting the corrosive medium, thereby ensuring the service life of the magnetic conductive layer.

[0082] Nitriding treatment

[0083] According to the present application, the nitriding treatment is performed so that the surface layer of the plasma titanium layer includes a first nitrided region. Specifically, the plasma titanium layer is placed in a nitriding furnace, nitrogen is introduced, and a nitriding reaction is performed at a set temperature. During the nitriding process, nitrogen molecules react chemically with the surface of the titanium layer to generate titanium nitride (TiN), thereby forming a first nitrided region on the surface of the plasma titanium layer. In some embodiments, the parameters of the nitriding treatment include a nitriding temperature of 500-550°C, a nitriding time of 4h-8h, and a nitriding furnace pressure of 0.05MPa-0.1MPa.

[0084] The specific steps include placing the preheated cookware with a plasma titanium layer into a nitriding furnace, and introducing a certain amount of nitrogen into the nitriding furnace. Nitrogen is the main gas for nitriding treatment and can chemically react with the titanium element on the surface of the cookware with a plasma titanium layer to generate hard compounds such as titanium nitride.

[0085] In these embodiments, the nitriding treatment forms a dense nitrided layer on the surface of the plasma titanium layer, serving as a first nitrided region. This first nitrided region exhibits extremely high hardness, significantly improving the wear resistance and corrosion resistance of the cookware coating. Furthermore, the first nitrided region effectively prevents the remaining plasma titanium layer from direct contact with corrosive substances in the external environment, thereby slowing or preventing corrosion reactions and improving the corrosion resistance of the cookware.

[0086] Forming an oil film

[0087] According to the present application, the method for manufacturing cookware further comprises filling oily substances into the porous structure of the non-stick layer.

[0088] In some embodiments, the oily substance can be filled into the porous structure of the non-stick layer by vacuum impregnation treatment, so that the oily substance can be continuously released during subsequent use to better exert the non-stick effect. In addition, the oily substance is filled in the porous structure of the non-stick layer, which can close the pores of the non-stick layer and ensure the corrosion resistance of the cookware with the non-stick layer. Specifically, the cookware with a non-stick layer having a porous structure is placed in a high-pressure sealed container so that the impregnation liquid completely covers the surface of the non-stick layer, the high-pressure sealed container is closed and a vacuum impregnation treatment is performed. Specific parameters include a vacuum degree of 90Pa-110Pa; an impregnation pressure of 0.5Mpa-0.7Mpa; an impregnation time of 15min-25min; an impregnation temperature of room temperature; and a spin-drying speed of 180rpm-220rpm.

[0089] In other embodiments, an aluminum substrate is heated and an oil is placed within the heated aluminum substrate, allowing the oil to penetrate the porous structure of the non-stick layer. Specifically, the pot body is preheated to 50°C-70°C, a certain amount of animal oil is poured into the pot until it is completely melted, and the oil is evenly spread on the surface of the pot body with oil-absorbing paper. The pot body is then naturally cooled to obtain a non-stick layer filled with animal oil within the porous structure of the pot body.

[0090] According to the present application, the oil substance includes animal oil, vegetable oil, silicone oil or polysiloxane.

[0091] In some embodiments, the animal oil is a solid-liquid convertible animal oil. For example, the solid-liquid convertible animal oil has a freezing point of 15°C to 48°C. Examples include lard, beef tallow, and horse oil. During use, at relatively low temperatures (<50°C), these oils can solidify into a solid and remain stable within the porous structure, effectively acting as both a solid lubricant at low temperatures and a liquid lubricant at high temperatures, thereby reducing film wear and extending product life.

[0092] In some embodiments, vegetable oil may be used to fill the porous structure of the non-stick layer, wherein the vegetable oil is rapeseed oil, peanut oil, or palm oil.

[0093] In some embodiments, the silicone oil can be selected from at least one of methyl silicone oil, dimethyl silicone oil, hydroxy silicone oil, hydrogen silicone oil, and polyether-modified silicone oil. The above silicone oils have specific viscosities and surface tensions, making them easier to enter the porous structure. The silicone oil is adsorbed into the porous structure. In addition, the silicone oil comprises, by weight percentage, 20%-30% of low molecular weight silicone oil, 40%-60% of medium molecular weight silicone oil, and 20%-30% of high molecular weight silicone oil, wherein the molecular weight of the low molecular weight silicone oil is between 500-1000, the molecular weight of the medium molecular weight silicone oil is between 3000-6000, and the molecular weight of the high molecular weight silicone oil is between 12000-30000.

[0094] After selecting the silicone oil, the aluminum substrate with a porous structure is impregnated with the silicone oil to obtain a cooker with silicone oil incorporated into the porous structure. For example, the silicone oil can be impregnated into the non-stick layer for 2-3 hours at a temperature of 80°C-100°C.

[0095] In these embodiments, silicone oil with a high molecular weight has a stronger bond to the porous structure and a slower release rate, silicone oil with a low molecular weight has better free mobility and thus has better non-stick properties, and silicone oil with a medium molecular weight has both free mobility and strong bonding. Therefore, by combining low molecular weight silicone oil, medium molecular weight silicone oil and high molecular weight silicone oil, on the one hand, the amount of silicone oil entering the porous structure is further increased to ensure sufficient oil supply; on the other hand, silicone oils with different binding forces can be continuously released at various stages of use to achieve a better non-stick effect. As an example, the bonding force between silicone oil and an aluminum substrate with a porous structure is approximately 5MPa-10MPa. Such a bonding force can ensure the continuous release of silicone oil and avoid premature release or inability to release silicone oil.

[0096] After coating, the cookware filled with the oil substance can be placed in a sintering furnace to be sintered to solidify it, wherein the curing temperature is 180° C.-200° C. and the curing time is 1 min-2 min.

[0097] 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, such modifications and variations will still fall within the spirit and scope of the embodiments of the present application as defined in the claims.

Claims

1. A cooker, characterized in that: The cookware includes an aluminum substrate and a non-stick layer formed on the inner surface of the aluminum substrate, the non-stick layer includes a cold-sprayed metal layer provided on the aluminum substrate and a plasma titanium layer provided on the cold-sprayed metal layer, wherein the hardness of the cold-sprayed metal layer is greater than the hardness of the aluminum substrate, the surface layer of the plasma titanium layer includes a first nitrided region, and the surface of the first nitrided region serves as the inner surface of the cookware.

2. The cooker according to claim 1, characterized in that The cold sprayed metal layer is an iron layer, a zinc layer, an aluminum layer, a titanium layer or a nickel layer.

3. The cooker according to claim 1, characterized in that The cold sprayed metal layer is formed of metal particles, and the particle size of the metal particles is in the range of 5 microns to 45 microns.

4. The cooker according to claim 1, characterized in that The thickness of the aluminum substrate is H1, wherein 2.6 mm ≤ H1 ≤ 3.0 mm; and / or The thickness of the cold sprayed metal layer is H2, wherein 30 micrometers ≤ H2 ≤ 150 micrometers; and / or The thickness of the plasma titanium layer is H3, wherein 10 micrometers ≤ H3 ≤ 30 micrometers; and / or The first nitrided region is formed to a depth H4, wherein 5 micrometers ≤ H4 ≤ 20 micrometers.

5. The cooker according to claim 1, characterized in that The plasma titanium layer is formed of titanium particles, and the particle size of the titanium particles is in the range of 20 microns to 45 microns.

6. The cooker according to claim 1, characterized in that The cooker further includes a magnetic conductive layer formed on the outer surface of the aluminum substrate, wherein the magnetic conductive layer is at least one of an iron layer, a nickel layer and a cobalt layer.

7. The cooker according to claim 6, characterized in that The cooker further includes a protective layer, which covers the outer side of the magnetic conductive layer.

8. The cooker according to claim 7, characterized in that The protective layer is an aluminum layer; and / or the outer layer of the protective layer includes a second nitrided region.

9. The cooker according to any one of claims 1 to 8, characterized in that The non-stick layer has a porous structure, and the porous structure is filled with oil substances.

10. The cooker according to claim 9, characterized in that The oil substance is animal oil, vegetable oil, silicone oil or polysiloxane.

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