Antibacterial physical non-stick pan and manufacturing method thereof

Abstract

The antibacterial physical non-stick pan comprises a pan body, the pan body comprises an inner surface and a pan body base material, and the inner surface comprises an anti-rust layer and an additive metal antibacterial layer from outside to inside; and the additive metal antibacterial layer is a metal particle mixing layer. According to the antibacterial physical non-stick pan, the metal particles are sprayed on the inner surface to form the additive metal antibacterial layer, and the additive metal antibacterial layer is a metal particle mixed layer with antibacterial performance, so that the antibacterial physical non-stick pan has wear resistance, antibacterial performance and physical non-stick performance; a metal additive layer with super wear resistance, bacteriostasis and physical non-stick performance is obtained by utilizing the bacteriostatic performance of metals such as Ti, Ag, Zn and Cu and oxides thereof, the physical non-stick effect of a mastoid structure generated when metal particles are overlapped and the hardness of the metals.

Description

Technical Field

[0001] The invention relates to a pan, in particular to an antibacterial physical non-stick pan and a manufacturing method thereof. Background Art

[0002] Pans are commonly used cooking tools in the kitchen. In order to facilitate cleaning and cooking, more and more people use non-stick pans, so people have higher and higher requirements for the performance and quality of non-stick pans. However, existing non-stick pans have many defects. For example, the surfaces of existing non-stick pans are coated with non-stick coatings, but during use, the coatings are easy to fall off and have a short service life. In addition, the pans are generally exposed to the air after use. The moisture, grease and food remaining on the surface of the pans are easy to breed bacteria, affecting people's health. Therefore, it is of great practical significance to develop an antibacterial and durable non-stick pan. Summary of the invention

[0003] The invention provides an antibacterial physical non-stick pan and a manufacturing method thereof.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] An antibacterial physical non-stick pan comprises a pan body, wherein the pan body comprises an inner surface and a pan body substrate, wherein the inner surface comprises an anti-rust layer and an additive metal antibacterial layer from the outside to the inside; the additive metal antibacterial layer is a metal particle mixed layer.

[0006] Preferably, the pot body further comprises an outer surface, and the outer surface is an easy-to-clean protective layer.

[0007] Preferably, a papillary structure is formed on the additive metal antibacterial layer.

[0008] A method for manufacturing an antibacterial physical non-stick pan comprises the following steps:

[0009] S1. Pot blank forming;

[0010] S2. Degreasing;

[0011] S3. Sandblasting;

[0012] S4. Cold gas dynamic spraying of metal particles on the inner surface;

[0013] S5. Surface nitriding treatment;

[0014] S6. External polishing;

[0015] S7. External spraying.

[0016] Preferably, in step S3, the surface of the pot body is sandblasted with a mixture of 46# and 60# brown corundum to make the surface roughness of the pot body reach Ra=4.5-7μm.

[0017] Preferably, in step S4, on a dedicated cold gas spraying device, compressed gas is used as an accelerating medium to accelerate the metal particles to a critical speed, driving the metal particles to collide with the outer bottom surface of the pot blank at an extremely high speed in a solid state, causing the particles to undergo strong plastic deformation and deposition to form a magnetic conductive coating.

[0018] Preferably, in step S4, the accelerating medium is nitrogen, and the temperature is 800-900°C; the diameter of the metal particles is 15um--45um; the speed of colliding with the outer bottom surface of the pot embryo is 800-1000m / s; the film thickness of the magnetic conductive coating is 150um-200um.

[0019] Preferably, in step S5, the pot blank is placed in a nitriding furnace and heated, and ammonia is introduced into the nitriding heating furnace. The ammonia is decomposed into active nitrogen atoms and hydrogen at high temperature, and the decomposed active nitrogen atoms diffuse to the surface layer of the pot blank, so that the temperature is increased, and finally nitrogen alloy compounds are formed on the surface; the pot blank is cooled with water or other materials to reduce its temperature to room temperature, and the surface of the pot blank is fixed after the chemical reaction, so as to form a dense and hard nitrided layer.

[0020] Preferably, in step S5, the nitriding heating furnace is heated to 400°C; after the decomposed active nitrogen atoms diffuse to the surface layer of the pot blank, the temperature is increased to 500-600°C.

[0021] Preferably, in step S5, the nitriding time is more than 12 hours.

[0022] Compared with the prior art, the antibacterial physical non-stick pan of the present invention forms an additive metal antibacterial layer by spraying metal particles on the inner surface. The additive metal antibacterial layer is a mixed layer of metal particles with antibacterial properties, and has wear-resistant, antibacterial and physical non-stick properties. The antibacterial properties of metals such as Ti, Ag, Zn, Cu and their oxides, the physical non-stick effect of the papillary structure generated when the metal particles are superimposed, and the hardness of the metal itself are utilized to obtain a metal additive layer with super wear resistance, antibacterial and physical non-stick properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional view of the antibacterial physical non-stick pan of the present invention.

[0024] Figure 2 for Figure 1 Magnified view at A. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1 to Figure 2As shown, an antibacterial physical non-stick pan includes a pan body 1, the pan body 1 includes an inner surface 11, a pan body substrate 12 and an outer surface 13, the outer surface 13 is an easy-to-clean protective layer, the pan body substrate 12 can be composed of an aluminum substrate, or a stainless steel substrate, or an iron substrate, the inner surface 11 includes an anti-rust layer 111 and an additive metal antibacterial layer 112 arranged in sequence from the outside to the inside; the additive metal antibacterial layer 112 is a metal particle mixed layer with antibacterial properties, which has wear-resistant, antibacterial and physical non-stick properties, and the metal particle mixed layer includes a variety of metal particle combinations (Fe+Ti, Ti, Fe+Ag, Fe+Zn, Fe+Cu, Fe+Ti+Ag, Ti+Ag, etc.) Metals such as Ti, Ag, Zn, Cu and their oxides have antibacterial properties. For example, Ti will quickly form a dense oxide film in the air, the main component of which is titanium dioxide. The oxide film has antibacterial properties. Under certain conditions, titanium will release a small amount of titanium ions, which also have antibacterial effects. Silver ions are very active and can combine with proteins on bacterial cell membranes, destroying the cell membrane structure of bacteria and causing bacterial death. At the same time, silver ions can also interfere with the metabolic process of bacteria, inhibiting bacterial reproduction and growth. When silver powder is combined and added to the surface of the aluminum substrate, it will gradually release anions during use, thereby exerting a lasting antibacterial effect.

[0027] The additive metal antibacterial layer 112 forms a papillary structure by superimposing metal particles, so that the pot body has stronger wear resistance.

[0028] A method for manufacturing an antibacterial physical non-stick pan comprises the following steps:

[0029] S1. Pot blank forming: Use special equipment and molds to form the pot blank.

[0030] S2. Degreasing: Use sodium hydroxide solution to remove grease and oxides on the surface of the pot blank, then rinse it with water; then neutralize it with dilute nitric acid at room temperature, finally rinse it with water and dry it to get a clean pot blank.

[0031] S3. Sandblasting: Use 46# and 60# mixed brown corundum to sandblast the surface of the pot;

[0032] In step S3, the surface roughness of the pot body reaches Ra=4.5-7 μm.

[0033] S4. Cold gas dynamic spraying of metal particles on the inner surface: On a special cold gas spraying device, compressed gas is used as an accelerating medium to accelerate the metal particles to a critical speed, driving the metal particles to collide with the outer bottom surface of the pot blank at a very high speed in a solid state, causing the particles to undergo strong plastic deformation and deposition to form a magnetic conductive coating;

[0034] In step S4, the accelerating medium is nitrogen, and the temperature is 800-900°C; the diameter of the metal particles is 15um--45um; the speed of colliding with the outer bottom surface of the pot embryo is 800-1000m / s; the film thickness of the magnetic conductive coating is 150um-200um.

[0035] In step S4, the metal particles will not be melted due to the low temperature during the whole process.

[0036] S5. Surface nitriding treatment: put the pot blank into a nitriding furnace and heat it. Ammonia is introduced into the nitriding heating furnace. Ammonia decomposes into active nitrogen atoms and hydrogen at high temperature. The decomposed active nitrogen atoms diffuse to the surface layer of the pot blank, causing the temperature to rise, and finally nitrogen alloy compounds are formed on the surface; the pot blank is cooled with water or other materials to reduce its temperature to room temperature, and the surface of the pot blank after the chemical reaction is fixed to form a dense and hard nitrided layer;

[0037] In step S5, the nitriding heating furnace is heated to 400°C; after the decomposed active nitrogen atoms diffuse to the surface layer of the pot blank, the temperature is raised to 500-600°C;

[0038] In step S5, the nitrogen alloy compound formed on the surface of the pot blank changes the mechanical properties and physical and chemical properties of the inner surface of the pot blank.

[0039] In step S5, the nitriding time is more than 12 hours.

[0040] S6. External polishing: Polish the prepared pot blank on a traditional polishing machine and polish the outer wall of the pot blank on a 180# nylon wheel to remove scratches, indentations and other defects on the surface of the pot wall.

[0041] S7. External spraying: Use traditional external spraying equipment to spray the entire outer surface of the pot blank with high-temperature paint, ceramic or water-based non-stick coating.

[0042] The antibacterial physical non-stick pan of the present invention forms an additive metal antibacterial layer 112 by spraying metal particles on the inner surface 11. The additive metal antibacterial layer 112 is a mixed layer of metal particles with antibacterial properties, and has wear-resistant, antibacterial and physical non-stick properties. The antibacterial properties of metals such as Ti, Ag, Zn, Cu and their oxides, the physical non-stick effect of the papillary structure generated when the metal particles are superimposed, and the hardness of the metal itself are utilized to obtain a metal additive layer with super wear resistance, antibacterial and physical non-stick properties.

[0043] Finally, it should be noted that the above embodiments only illustrate the technical solutions of the present invention, rather than limiting it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An antibacterial physical non-stick pan comprises a pan body (1), wherein the pan body (1) comprises an inner surface (11) and a pan body substrate (12), wherein the inner surface (11) comprises an anti-rust layer (111) and an additive metal antibacterial layer (112) from the outside to the inside; the additive metal antibacterial layer (112) is a metal particle mixed layer.

2. The antibacterial physical non-stick pan according to claim 1, characterized in that: The pot body (1) further comprises an outer surface (13), and the outer surface (13) is an easy-to-clean protective layer.

3. The antibacterial physical non-stick pan according to claim 1 or 2, characterized in that: A papillary structure is formed on the additive metal antibacterial layer (112).

4. A method for manufacturing an antibacterial physical non-stick pan, comprising the following steps: S1. Pot blank forming; S2. Degreasing; S3. Sandblasting; S4. Cold gas dynamic spraying of metal particles on the inner surface; S5. Surface nitriding treatment; S6. External polishing; S7. External spraying.

5. The method for manufacturing an antibacterial physical non-stick pan according to claim 4, characterized in that: In step S3, the surface of the pot body is sandblasted with a mixture of 46# and 60# brown corundum to make the surface roughness of the pot body reach Ra=4.5-7μm.

6. The method for manufacturing an antibacterial physical non-stick pan according to claim 4, characterized in that: In step S4, on a dedicated cold gas spraying device, compressed gas is used as an accelerating medium to accelerate the metal particles to a critical speed, driving the metal particles to collide with the outer bottom surface of the pot blank at an extremely high speed in a solid state, causing the particles to undergo strong plastic deformation and deposition to form a magnetic conductive coating.

7. The method for manufacturing an antibacterial physical non-stick pan according to claim 6, characterized in that: In step S4, the accelerating medium is nitrogen, and the temperature is 800-900°C; the diameter of the metal particles is 15um--45um; the speed of colliding with the outer bottom surface of the pot embryo is 800-1000m / s; the film thickness of the magnetic conductive coating is 150um-200um.

8. The method for manufacturing an antibacterial physical non-stick pan according to claim 4, characterized in that: In step S5, the pot blank is placed in a nitriding furnace and heated. Ammonia is introduced into the nitriding heating furnace. Ammonia decomposes into active nitrogen atoms and hydrogen at high temperature. The decomposed active nitrogen atoms diffuse to the surface layer of the pot blank, causing the temperature to rise, and eventually nitrogen alloy compounds are formed on the surface. The pot blank is cooled with water or other materials to reduce its temperature to room temperature, and the surface of the pot blank is fixed after the chemical reaction, forming a dense and hard nitrided layer.

9. The method for manufacturing an antibacterial physical non-stick pan according to claim 8, characterized in that: In step S5, the nitriding heating furnace is heated to 400°C; after the decomposed active nitrogen atoms diffuse to the surface layer of the pot blank, the temperature rises to 500-600°C.

10. The method for manufacturing an antibacterial physical non-stick pan according to claim 8 or 9, characterized in that: In step S5, the nitriding time is more than 12 hours.

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