CN115474829A - Cooker with pure inorganic non-stick coating and manufacturing method thereof - Google Patents
Cooker with pure inorganic non-stick coating and manufacturing method thereof Download PDFInfo
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- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
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- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 3
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- 229910052500 inorganic mineral Inorganic materials 0.000 claims 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 claims 1
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- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/025—Vessels with non-stick features, e.g. coatings
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/04—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay the materials being non-metallic
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Cookers (AREA)
Abstract
The embodiment of the invention relates to a cooker with a pure inorganic non-stick coating and a manufacturing method thereof, wherein the cooker comprises a base material layer and the non-stick coating, the non-stick coating is formed by spraying inorganic particles on the inner surface of the base material layer, a communicated pore structure is formed among the inorganic particles of the non-stick coating, the non-stick coating comprises at least three sub-coatings, the at least three sub-coatings are sequentially superposed on the inner surface of the base material layer according to the particle size of the inorganic particles, the particle size of the inorganic particles of the sub-coatings adjacent to the base material layer is the largest, and the particle sizes of the inorganic particles of the sub-coatings are sequentially reduced in the direction far away from the base material layer, so that the pores in the sub-coatings are sequentially reduced in the direction far away from the base material layer. The non-stick coating of the cooker provided by the embodiment of the invention has the advantages of high bonding strength and toughness, high surface hardness, scratch resistance and wear resistance, the surface has the functions of oil absorption, oil storage and self lubrication, and pores can be heated for micropore heating respiration, so that the effects of non-sticking and easy cleaning are achieved.
Description
Technical Field
The invention belongs to the technical field of kitchen supplies, and particularly relates to a cooker with a non-stick coating and a manufacturing method thereof.
Background
The non-stick cooker, especially the non-stick pan, is the mainstream product of the cooker in the market at present, and is mainly realized by forming a layer of non-stick material on the surface of a pan body base material.
In the prior art, a commonly used non-stick material mainly comprises fluoro-organic substances such as polytetrafluoroethylene, and the non-wetting property of the fluoro-organic substances is utilized to make the cooker have the non-stick function. However, the fluorine organic matter can be decomposed under the high temperature condition (such as polytetrafluoroethylene is more than 250 ℃), so that the fluorine organic matter coating is damaged, and the non-stick function of the cooker is lost; meanwhile, after the fluorine organic matter coating is decomposed, toxic substances are generated, and the health of a human body is damaged.
The other non-stick material has the main component of silica sol resin, is similar to fluorine organic matter materials, has excellent non-stick performance, but has great limitations in temperature resistance, hardness, durability, environmental safety and the like due to the characteristics of the material, and cannot completely meet the requirements of markets and consumers.
There is also a proposal for manufacturing non-stick cookware by using ceramic and enamel as non-stick materials, and although ceramic and enamel have the characteristics of high color value, high temperature resistance, high hardness, durability, environmental protection and the like, the materials themselves do not have any non-stick characteristics, and are weak in non-stick performance under oil and oil-free conditions. Therefore, the method is generally applied to products such as soup pots, stewpots and the like, and cannot be widely popularized.
At present, a non-stick structure with a plurality of fine grooves or capillary holes formed on the inner surface of a cooker appears, the contact area between food and the inner surface of the cooker is reduced during cooking, meanwhile, grease can be adsorbed in the grooves and the capillary holes on the inner surface of the cooker, the grease in the grooves and the capillary holes can expand and be released from the grooves and the capillary holes during heating and cooking, and a layer of oil film is formed at the bottom of the cooker, so that the non-stick effect is generated; after the heating is stopped, the edible oil is cooled and stored in the grooves and pores on the inner surface of the cooker. Therefore, the cooker with the structure can keep a certain function of non-stick for a long time, but the structure of the small groove or the capillary hole has a great influence on the non-stick performance of the cooker, and a good non-stick effect can be realized only by a specific structure, so that the requirement on the manufacturing process and the like is high.
Disclosure of Invention
In order to solve the technical problem, the invention provides a cooker with a pure inorganic non-stick coating and a manufacturing method thereof.
According to one aspect of the invention, the cooker comprises a substrate layer and a non-stick coating, the non-stick coating is formed by spraying inorganic particles on the inner surface of the substrate layer, communicated pore structures are formed among the inorganic particles of the non-stick coating, the inorganic particles sprayed on the inner surface of the substrate layer are pure inorganic particles, no organic solvent is added,
the non-stick coating comprises at least three sub-coating layers, wherein the at least three sub-coating layers are sequentially superposed on the inner surface of the substrate layer according to the size of the inorganic particle size, the inorganic particle size of the sub-coating layer adjacent to the substrate layer is the largest, and the inorganic particle sizes of the sub-coating layers are sequentially reduced in the direction far away from the substrate layer, so that the pores in the sub-coating layers are sequentially reduced in the direction far away from the substrate layer.
In one embodiment, the inorganic particles have a particle size of 100 nanometers to 60 micrometers, and the inorganic particles are plasma sprayed, supersonic sprayed, cold sprayed, laser clad, or air sprayed on the inner surface of the substrate layer; the thickness of the non-stick coating is between 61 and 130 microns.
In one embodiment, the inorganic particulate material may be metal particles, ceramic particles, or carbon powder, wherein the metal particles are one or more of titanium, titanium alloy, zirconium alloy, stainless steel, low carbon steel, high carbon steel, and zinc, the ceramic particles are one or more of zirconium oxide, zirconium nitride, titanium oxide, titanium nitride, titanium carbide, aluminum oxide, magnesium oxide, triiron tetroxide, iron trioxide, boron nitride, calcium oxide, silicon oxide, and silicon nitride, and the carbon powder is one or more of natural graphite, polycrystalline graphite, pyrolytic graphite, highly oriented pyrolytic graphite, and carbon quantum dots.
In one embodiment, the three sub-coatings are an oil storage layer, a slow-release curing layer and a dispersion surface layer, and the oil storage layer, the slow-release curing layer and the dispersion surface layer are sequentially arranged in the direction away from the base material layer.
In one embodiment, the oil reservoir layer, the sustained-release solidified layer, and the dispersion surface layer are sequentially stacked.
In one embodiment, the inorganic particles of the reservoir have a particle size of 15-60 microns, the reservoir has a layer thickness of 40-70 microns, and a porosity of between 15-25%; the particle size of the inorganic particles of the slow-release solidified layer is 1-15 micrometers, the layer thickness of the slow-release solidified layer is 20-40 micrometers, and the porosity is 5-15%; the grain diameter of the inorganic particles of the dispersion surface layer is 100 nanometers-1 micron, and the layer thickness of the dispersion surface layer is 1-20 microns.
In one embodiment, the weight ratio of the ceramic particles in the reservoir is not less than 70%; the weight ratio of the metal particles in the slow-release solidified layer is not less than 60%; the weight ratio of the carbon powder in the dispersion surface layer is not less than 50%.
According to another aspect of the present invention, the manufacturing method of the cooker includes the steps of:
forming a metal base material by a stretching or die-casting method, then cleaning burrs, and performing surface polishing and cleaning treatment to form a base material layer with the thickness not less than 1 mm;
and spraying the inorganic particles on the inner surface of the substrate layer in a cold spraying, plasma spraying, supersonic spraying, laser cladding or air spraying mode to form the non-stick coating.
The invention has the beneficial effects that: the cooker with the non-stick coating comprises at least three sub-coatings, wherein the at least three sub-coatings are sequentially superposed on the inner surface of the base material layer according to the particle size of inorganic particles, the particle sizes of the inorganic particles of the sub-coatings are sequentially reduced in the direction far away from the base material layer, so that the pore structures in the sub-coatings are sequentially reduced in the direction far away from the base material layer, the non-stick coating is high in bonding strength and toughness, high in surface hardness, resistant to scraping and wear-resistant, the surface has the functions of oil absorption, oil storage and self lubrication under the condition that oil exists when a pan is opened, and pores can be heated and breathed through micropores after heating, so that the effects of non-stick and easy cleaning are achieved.
Drawings
FIG. 1 is a cross-sectional view of the wall of a vessel of a cookware with a non-stick coating as set forth in an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings. Those skilled in the art will appreciate that the present invention is not limited to the figures and the following examples.
As used herein, the term "include" and its various variants are to be understood as open-ended terms, which mean "including, but not limited to. The term "based on" and the like may be understood as "based at least on". The terms "first", "second", "third", etc. are used merely to distinguish different features and have no essential meaning. The terms "left", "right", "middle", and the like are used only to indicate a positional relationship between relative objects.
The embodiment of the invention provides a cooker with a non-stick coating, which comprises a substrate layer 1 and the non-stick coating 2, wherein the non-stick coating 2 is formed by spraying inorganic particles on the inner surface of the substrate layer 1, communicated pore structures are formed among the inorganic particles of the non-stick coating 2, and the inorganic particles sprayed on the inner surface of the substrate layer are pure inorganic particles and are not added with organic solvents. The non-stick coating 2 comprises at least three sub-coating layers, wherein the at least three sub-coating layers are sequentially superposed on the inner surface of the substrate layer 1 according to the particle size of inorganic particles, the particle size of the inorganic particles of the sub-coating layers adjacent to the substrate layer 1 is the largest, and the particle sizes of the inorganic particles of the sub-coating layers are sequentially reduced in the direction far away from the substrate layer 1, so that the pores in the sub-coating layers are sequentially reduced in the direction far away from the substrate layer 1.
Specifically, as shown in FIG. 1, a cross-sectional view of the wall of a vessel of a cookware is shown. The cooker in fig. 1 is preferably a wok according to the use condition and effect, and comprises a base material layer 1 and a non-stick coating layer 2.
The base material layer 1 is a base body of a cooker, is usually made of metal materials such as aluminum alloy, stainless steel or iron, and is usually not less than 1mm thick.
The non-stick coating 2 is formed by spraying inorganic particle materials on the inner surface of the base material layer 1, the particle size of the inorganic particles is 100 nanometers-60 micrometers, the spraying can be achieved by adopting plasma spraying, supersonic spraying, cold spraying, laser cladding technology, air spraying and the like, and the thickness of the non-stick coating 2 is 61-130 micrometers.
The inorganic particulate material may be metal particles, ceramic particles or carbon powder. The metal particles may be one or more of titanium, titanium alloy, zirconium alloy, stainless steel, low carbon steel, high carbon steel and zinc, the ceramic particles may be one or more of zirconium oxide, zirconium nitride, titanium oxide, titanium nitride, titanium carbide, aluminum oxide, magnesium oxide, ferroferric oxide, ferric oxide, boron nitride, calcium oxide, silicon oxide and silicon nitride, and the carbon powder may be one or more of natural graphite, polycrystalline graphite, pyrolytic graphite, highly oriented pyrolytic graphite and carbon quantum dots. Due to the adoption of the spraying process, the inorganic particles of the non-stick coating 2 cannot be tightly attached, and a pore structure can be formed among the inorganic particles.
The non-stick coating 2 comprises at least three sub-coating layers which are sequentially superposed according to the size of the inorganic particle size, wherein the inorganic particle size of the sub-coating layer adjacent to the substrate layer 1 is the largest, and the inorganic particle sizes of the sub-coating layers are sequentially reduced in the direction far away from the substrate layer 1.
In this embodiment, the three sub-coatings are an oil storage layer 21, a sustained-release cured layer 22, and a diffusion surface layer 23, which are sequentially stacked. The grain diameter of the inorganic particles of the oil storage layer 21 is 15-60 microns, and the inorganic particles can be one or more of the metal particles, ceramic particles or carbon powder. The reservoir layer 21 has a layer thickness of 40-70 microns and a porosity of 15-25%. The particle size of the inorganic particles of the slow-release curing layer 22 is 1-15 micrometers, and the inorganic particles can be one or more of the above metal particles, ceramic particles or carbon powder. The layer thickness of the slow release solidified layer 22 is 20-40 microns, and the porosity is 5-15%. The inorganic particles of the dispersion surface layer 23 have a particle size of 100 nm-1 μm, and the inorganic particles may be one or more of the above-mentioned metal particles, ceramic particles or carbon powder. The layer thickness of the diffusion surface layer 23 is 1-20 microns. The term "dispersed surface layer" as used herein means that the inorganic particles do not entirely cover the sustained-release cured layer 22, for example, the inorganic particles can be uniformly formed in the form of independent particles to cover the sustained-release cured layer 22, and/or a plurality of surface layer sub-regions are uniformly arranged in a chapped shape are formed on the sustained-release cured layer 22, so that the dispersed surface layer 23 does not completely enclose the sustained-release cured layer 22, and the surface of the dispersed surface layer 23 is in a rugged frosted state.
Since the particle size of the inorganic particles in the oil reservoir 21 is the largest, the particle size of the inorganic particles in the sustained-release cured layer 22 is the next largest, and the particle size of the inorganic particles in the dispersion surface layer 23 is the smallest in the three sub-coating layers, i.e., the oil reservoir 21, the sustained-release cured layer 22, and the dispersion surface layer 23, the pores formed between the inorganic particles in the oil reservoir 21 are the largest, the pores formed between the inorganic particles in the oil reservoir 21 are the next largest, and the pores formed between the inorganic particles in the dispersion surface layer 23 are the smallest.
In addition, in this embodiment, the particle size of the inorganic particles of the diffusion surface layer 23 is 100 nm to 1 micron, which is much smaller than the particle size of the inorganic particles of the oil reservoir layer 21 of 15 to 60 microns and the particle size of the inorganic particles of the sustained-release cured layer 22 of 1 to 15 microns, so that the pores in the oil reservoir layer 21 are relatively large for storing grease; the pores in the dispersion surface layer 23 are very small, relatively dense and uniform, so that on one hand, the hardness of the dispersion surface layer 23 can be improved, and on the other hand, grease can be conveniently and uniformly infiltrated or separated out; in addition, set up the slow-release cured layer 22 that inorganic particle diameter is middle between oil reservoir 21 and diffusion surface course 23, this layer is the transition layer, the effect that has the cured coating, can effectively bond oil reservoir 21 and diffusion surface course 23, improve bonding strength and toughness of non-stick coating 2, the effect of supplementary oil storage has also been played, simultaneously, when beginning to heat the cooking utensil, along with the rising of cooking utensil temperature, oil gas after grease and gas mixture need fill in the slow-release cured layer 22 earlier just can separate out from diffusion surface course 23, thereby according to the grease that the cooking utensil bottom was separated out, can estimate the heating degree of cooking utensil.
Preferably, the main component of the oil reservoir 21 is ceramic particles, and the weight ratio of the ceramic particles is not lower than 70%; the main component of the slow-release solidified layer 22 is metal particles, and the weight ratio of the metal particles is not lower than 60%; the main component of the dispersion surface layer 23 is carbon powder, and the weight ratio of the carbon powder is not less than 50%. Thus, the obtained bottom layer is a ceramic layer of which the oil storage layer mainly comprises ceramic particles, and the obtained bottom layer mainly obtains a porous layer with stable structure, high strength and high hardness; the second layer is a slow release layer which is mainly a composite metal layer made of metal particles, and the layer can improve the toughness of the bottom ceramic layer, optimize the pore structure, improve the pore density, reduce the pore diameter, improve the stability of oil storage and ensure that the surface has stronger metal texture; the third layer is that the surface layer mainly comprises carbon powder substances, so that a self-lubricating functional layer is obtained, the self-lubricating effect is achieved, the surface friction coefficient of the dispersion surface layer 23 is low, the dynamic friction coefficient is low under the condition of oil, and the surface of the non-stick coating 2 is easy to clean and is not sticky physically.
Through material accumulation, the non-stick coating 2 has a three-dimensional structure with gaps for oil storage, the surface of the non-stick coating 2 can also form a concave-convex structure, the concave-convex structure can make food parts overhead, and in the pores of the food and the surface, heated grease can slightly boil and generate a large amount of hot steam to further lift the food, so that the separation of the food and the surface is realized, and a certain physical non-stick effect is achieved.
Hereinafter, the present invention will be described by taking a non-stick pan as an example.
During cooking, when the non-stick pan is heated, the pores/micropores in the non-stick coating 2 are expanded by heat, so that the non-stick pan has strong adsorption force to grease. After oil is drained in the non-stick pan, the oil fully wets and fills the micropores; the grease in the pores will slightly boil and generate hot gas, so that during cooking, the slightly boiled grease and hot gas are positioned between the food and the non-stick coating 2 to lift the food, and the food is separated from the non-stick coating 2. After cooking is finished, along with taking away of grease by food and reduction of the temperature of the non-stick pan body, the temperature of the grease in the pores of the non-stick coating 2 is reduced, the volume is shrunk, grease residue exists, even if the surface of the non-stick pan is cleaned, a certain amount of grease is kept in the pores of the non-stick coating 2, especially in the pores of the oil storage layer 21, and the grease is heated again and separated out from the pores to keep the oil-lubricated state of the pan bottom. Therefore, the non-stick pan of the embodiment works on the principle that the non-stick pan is continuously heated, the grease in the pores of the non-stick coating 2 is continuously kept in a boiling state, a large amount of hot steam is generated, and the food to be cooked can be lifted on the bottom of the non-stick pan in a semi-suspension manner, so that the technical effect of 'non-stick' is achieved. In the nonstick pan of the present embodiment, if the nonstick pan is boiled and washed with hot water after cooking, grease remaining in the micropores can be replaced, and the nonstick pan can be completely washed.
While only three sequentially stacked sub-coatings are shown in this embodiment, it will be understood by those skilled in the art that one or more slow-release cured layers having different inorganic particle sizes may be further included between the oil reservoir layer 21 and the diffusion surface layer 23 to further improve the bonding strength and toughness of the non-stick coating 2, and it is within the scope of the present invention.
Another embodiment of the present invention provides a method of manufacturing the cooker as described above, including the steps of:
s1: and forming the base material layer.
The method comprises the steps of forming metal base materials such as aluminum alloy, stainless steel or iron through a drawing or die-casting method, then cleaning burrs, and carrying out surface polishing and cleaning treatment to form the base material layer 1 with the thickness not less than 1mm.
S2, spraying on the substrate layer 1 to form a non-stick coating 2.
And coating inorganic particles on the inner side surface of the substrate layer 1 in a cold spraying, plasma spraying, supersonic spraying, laser cladding or air spraying mode to form the non-stick coating 2. It should be noted that laser cladding as referred to herein is one of thermal spraying.
In a preferred embodiment of the present invention, the base material is preheated to 80 to 120 degrees, and the above-mentioned inorganic particles whose main component is ceramic particles (not less than 70% by weight) are sprayed onto the inner side surface of the base material layer 1 by plasma spraying or supersonic spraying to form the oil reservoir 21. Preferably, the plasma spraying is used as a column, the powder feeding amount of the inorganic particles is adjusted to be 4-8mg/s under the conditions of 55-65V voltage and 500-600A current, the hydrogen gas with the flow rate of 4-8L/m is used for spraying the inorganic particles on the inner side surface of the substrate layer 1, the spraying distance is 10-15mm, an oil storage layer 21 with the thickness of 40-70 micrometers and the porosity of 15-25% is formed, and for a 30cm wok, 50-90s is required to be sprayed. The layer is used as a basic coating to ensure the hardness and the strength of the non-stick coating 2, and a basic gap layer with the thickness of 40-70 micrometers is built.
Subsequently, the inorganic particles whose main component is metal particles (not less than 60% by weight) as described above are sprayed to the outer surface of the oil reservoir layer 21 by using a cold spray process and a supersonic spray process to form the slow-release cured layer 22. Preferably, in the case of cold spraying, nitrogen with the temperature of 200-400 ℃ is used as the spraying gas, the spraying pressure is controlled to be 2.0-3.5MPa, the gas flow rate is controlled to be 500-900m/s, metal particle powder is axially fed into the gas along the spraying gas to form gas-solid dual-phase flow, the spraying is carried out 10-25mm away from the outer surface of the oil storage layer 21 to form the slow-release curing layer 22 with the spraying thickness of 2-40 microns and the porosity of 5-15%, and for a 30cm wok, the spraying is required to be 30-60s. During the spraying process, the oil storage layer 21 can be subjected to appropriate hole filling, secondary stacking and surface improvement, a finer micro-nano form is formed, and more and finer gaps are formed.
Finally, the inorganic particles with the main component of carbon powder (not less than 50% by weight) are sprayed on the outer surface of the slow-release curing layer 22 by adopting a laser cladding or spraying process to form a dispersion surface layer 23. Preferably, taking a spraying process as an example, by spraying carbon powder resin at a pressure of 0.4-0.6MPa and a distance of 10-25mm from the outer surface of the slow-release cured layer 22, and then sintering and curing at 330 ℃ for 8-12 minutes, a dispersion surface layer 23 with a self-lubricating function is formed on the surface of the slow-release cured layer 22, wherein the thickness of the dispersion surface layer 23 is 1-20 micrometers, and the surface of the dispersion surface layer 23 is in a concave-convex frosted state.
A non-stick pan according to an embodiment of the invention is manufactured by the manufacturing method. Wherein, the material of substrate layer is stainless steel, and substrate layer thickness is 1.2mm. The non-stick coating is composed of three sub-coatings, namely an oil storage layer 21, a slow-release curing layer 22 and a dispersion surface layer 23, wherein the oil storage layer 21 comprises 72% by weight of ceramic particles, the particle size of inorganic particles is 35 micrometers, the layer thickness is 60 micrometers, and the porosity is 20%; the slow-release solidified layer 22 comprises 64% by weight of metal particles, the inorganic particles have a particle size of 10 microns, a layer thickness of 30 microns, and a porosity of 15%; the dispersion surface layer 23 comprises 50% by weight of carbon powder, the inorganic particles have a particle size of 300 nm and a layer thickness of 5 μm.
Physical index detection:
1. the hardness of the pencil is more than 9H, no scratch is caused by scratching with a steak knife, and no scratch is caused by an iron shovel and a steel wire ball.
2. High temperature resistance, no cracking and color change on the surface, no weight loss and the like when the glass is placed into a 500-DEG oven and continuously heated for 1 hour.
3. And (3) cold and hot impact, namely heating the workpiece to 400 ℃, putting the workpiece into 20 ℃ water, and continuously impacting for 50 times to observe that the surface has no changes such as cracking, color change and the like.
4. Non-tackiness test method:
1. and (5) frying the eggs.
The method comprises the steps of boiling the pan according to a standard method, cleaning the pan, heating the pan to 150 ℃, spraying oil for three times by using an oil spraying kettle to obtain about 5g of oil, heating the pan to 160 ℃, and then adding eggs, wherein the eggs can be continuously fried without sticking, oil can not be discharged, and 6 eggs can be continuously fried without sticking under the subsequent oil-free condition and the continuous temperature rise condition.
2. Shredded pork with fried meat (two methods)
Heating the pot to cool the oil: heating the pan to 200 ℃ for oil drainage, immediately putting the pickled shredded pork after oil drainage, and stir-frying to find that the pan is not stuck;
heating the pot to heat oil: heating the pan to 200 deg.C, discharging oil, adding the pickled shredded pork after the oil is heated to slight smoke, and stir-frying to find non-stick pan.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Cookware with a purely inorganic non-stick coating, said cookware comprising a substrate layer (1) and a non-stick coating (2), said non-stick coating (2) being formed by spraying inorganic particles on the inner surface of said substrate layer (1), said non-stick coating (2) having a communicating pore structure formed between the inorganic particles, characterized in that,
the non-stick coating (2) comprises at least three sub-coating layers which are sequentially superposed on the inner surface of the substrate layer (1) according to the particle size of inorganic particles, wherein the particle size of the inorganic particles of the sub-coating layers adjacent to the substrate layer (1) is the largest, and the particle sizes of the inorganic particles of a plurality of sub-coating layers are sequentially reduced in the direction far away from the substrate layer (1), so that the pores in the plurality of sub-coating layers are sequentially reduced in the direction far away from the substrate layer (1).
2. The cooker according to claim 1, wherein the inorganic particles have a particle size of 100 nm to 60 μm, and the inorganic particles are plasma sprayed, supersonic sprayed, cold sprayed, laser clad or air sprayed on the inner surface of the substrate layer (1); the thickness of the non-stick coating (2) is between 61 and 130 micrometers.
3. The cooker of claim 1, wherein the inorganic particulate material is one or more of metal particles, ceramic particles, or carbon powder, wherein the metal particles are one or more of titanium, titanium alloy, zirconium alloy, stainless steel, low carbon steel, high carbon steel, and zinc, the ceramic particles are one or more of zirconium oxide, zirconium nitride, titanium oxide, titanium nitride, titanium carbide, aluminum oxide, magnesium oxide, triiron tetraoxide, iron sesquioxide, boron nitride, calcium oxide, silicon oxide, and silicon nitride, and the carbon powder is one or more of natural graphite, polycrystalline graphite, pyrolytic graphite, highly oriented pyrolytic graphite, and carbon quantum dots.
4. The cooker according to claim 1, wherein the three sub-coatings are an oil reservoir layer (21), a slow-release cured layer (22) and a dispersion surface layer (23), and the oil reservoir layer (21), the slow-release cured layer (22) and the dispersion surface layer (23) are sequentially arranged in a direction away from the base material layer (1).
5. A device as claimed in claim 4, wherein the oil reservoir layer (21), the slow-release solidified layer (22) and the dispersion cover layer (23) are laminated in this order.
6. The cooking appliance according to claim 5, wherein the mineral particles of the reservoir (21) have a particle size of 15-60 microns, the layer thickness of the reservoir (21) is 40-70 microns, and the porosity is between 15-25%; the particle size of the inorganic particles of the slow-release curing layer (22) is 1-15 microns, the layer thickness of the slow-release curing layer (22) is 20-40 microns, and the porosity is 5-15%; the particle size of the inorganic particles of the dispersion surface layer (23) is 100 nanometers-1 micron, and the layer thickness of the dispersion surface layer (23) is 1-20 microns.
7. The cooking appliance according to claim 5, wherein the weight ratio of the ceramic particles in the oil reservoir (21) is not less than 70%; the weight ratio of the metal particles in the slow-release solidified layer (22) is not less than 60 percent; the weight ratio of the carbon powder in the dispersion surface layer (23) is not less than 50%.
8. A method for manufacturing a cooking device as claimed in one of the claims 1 to 7, characterized in that the method comprises the following steps:
forming a metal base material by a stretching or die-casting method, then cleaning burrs, and carrying out surface polishing and cleaning treatment to form a base material layer (1) with the thickness not less than 1 mm;
and spraying inorganic particles on the inner surface of the substrate layer (1) in a cold spraying, plasma spraying, supersonic spraying, laser cladding or air spraying mode to form the non-stick coating (2).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211398575.4A CN115474829A (en) | 2022-11-09 | 2022-11-09 | Cooker with pure inorganic non-stick coating and manufacturing method thereof |
| PCT/CN2023/099824 WO2024098743A1 (en) | 2022-11-09 | 2023-06-13 | Cookware that achieves non-stick effect by means of pure inorganic structural layer, and manufacturing method therefor |
| EP23866686.1A EP4393352A1 (en) | 2022-11-09 | 2023-06-13 | Cookware that achieves non-stick effect by means of pure inorganic structural layer, and manufacturing method therefor |
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| CN202211398575.4A CN115474829A (en) | 2022-11-09 | 2022-11-09 | Cooker with pure inorganic non-stick coating and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024098743A1 (en) * | 2022-11-09 | 2024-05-16 | 浙江三禾厨具有限公司 | Cookware that achieves non-stick effect by means of pure inorganic structural layer, and manufacturing method therefor |
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