WO2013020395A1

WO2013020395A1 - Stainless steel product having non-stick surface and treatment process thereof

Info

Publication number: WO2013020395A1
Application number: PCT/CN2012/074876
Authority: WO
Inventors: 胡金高; 汪宇洋; 胡骏超
Original assignee: 缙云县太极科技有限公司
Priority date: 2011-08-05
Filing date: 2012-04-28
Publication date: 2013-02-14
Also published as: CN102416723B; CN103612438B; CN103612438A; CN102416723A

Abstract

A stainless steel product having a non-stick surface and a treatment process thereof. The stainless steel product has a stainless steel body, wherein at least one surface of the body is uniformly distributed with arc-shaped pits, and the surface roughness thereof is Ra1 to 2 μm. A sintering non-stick layer having a thickness of 1 to 5μm is attached to the surface of the stainless steel body. The treatment process of the stainless steel product comprises the steps of polishing, shot blasting, washing, spray coating, and sintering etc., wherein, by shot blasting, the stainless steel surface forms arc-shaped pits uniformly, and then a volatile solvent is used to wash the stainless steel surface. This treatment process can improve the surface strength of the non-stick stainless steel product, increase the adhesion between the surface of the non-stick stainless steel product and the non-stick layer, enhance the corrosion resistance of the surface, distinguish the metal texture of the surface, and extend the service life of the non-stick stainless steel product.

Description

Stainless steel product with non-stick surface and treatment process thereof

Technical field

The invention relates to a stainless steel product having a non-stick surface and a treatment process thereof, and is particularly suitable for non-stick surface treatment of stainless steel products such as stainless steel decorative materials, stainless steel security doors and stainless steel kitchen appliances. At present, stainless steel products have been widely used in stainless steel decorative materials, stainless steel security doors and stainless steel kitchen appliances.

The surface treatment methods of the existing stainless steel cookware are: polishing, sanding, and surface coating non-stick layer. When cooking utensils using stainless steel polishing and sanding surface treatment, there is a sticking or burning phenomenon. The stainless steel cookware with non-stick layer treatment on the surface can avoid the sticking and burning of the cookware when processing food, which brings convenience and fun to people's cooking. However, at present, some cookwares with non-stick layers on the open field, when the non-stick layer is processed, the surface of the body is sprayed with gold steel sand to form irregular four pits, and then sprayed on the cookware by washing with water. The gold steel sand on the surface of the body is washed away. Finally, the non-stick material solution is sprayed, and the non-stick material solution is adhered to the body of the cookware by the temperature baking, and the production process can be reduced to some extent. The food sticks to the pan or the paste pot phenomenon, but the existing process has the following deficiencies: 1. After the surface of the cooker body is treated by the gold steel sand, the gold steel sand attached to the surface of the cookware body cannot be thoroughly cleaned by water. Can not meet the cleaning requirements, so that when the non-stick layer is processed, the non-stick layer is easy to change color and fall off; 2. As everyone knows, the water contains many mineral components, especially calcium and magnesium, and the body of the cookware is washed with water to make the cookware The surface of the body is easy to scale, so that when the non-stick layer is sprayed, the adhesion of the non-stick layer to the cookware body is affected; 3. Processing according to the existing process The surface of the stainless steel cookware has different pits and irregular shapes, so the non-stick layer of the spray needs to be relatively thick. Even if a transparent non-stick layer is used, the presence of the coating is obvious, so the surface has lost the stainless steel metal texture. Affects the overall aesthetics of the cookware.

At present, stainless steel security doors and decorative materials have been widely used, and they have good practicability and decoration. The surface treatment of the existing stainless steel security door mainly has two processes of polishing and drawing. The disadvantages are mainly that the pollution resistance is not good, such as being easily removed by sweat stains and dust, and it is easy to be scratched by hard objects and difficult to repair. . Summary of the invention

One of the objects of the present invention is to provide a stainless steel article having a surface that is easy to clean and suitable for sintering a non-stick layer.

The stainless steel member of the present invention has a stainless steel body, and at least one surface of the stainless steel body is evenly distributed with circular arc-shaped pits, and the surface roughness thereof is Ral~2 m.

The stainless steel member according to the present invention may be a member made of a single stainless steel material, or may be a member having a surface layer of stainless steel and a core layer of other materials.

It is still another object of the present invention to provide a stainless steel article having a non-stick surface, the stainless steel article having a non-stick surface comprising the above-described stainless steel member having a stainless steel body surface uniformly distributed with arc-shaped four pits A sintered non-stick layer is attached thereon, and the sintered non-stick layer has a thickness of 1 to 5 μm. Preferably, the material of the sintered non-stick layer contains silicon oxide.

Preferably, the sintered non-stick layer is formed by spraying a transparent non-stick material solution onto the surface of the stainless steel body and then sintering.

The stainless steel article of the present invention may be a stainless steel decorative material, a stainless steel security door, and a stainless steel kitchen article.

A further object of the present invention is to provide a non-stick surface treatment process for a stainless steel product, by which the non-stick layer on the surface of the stainless steel product is processed, which not only ensures that the surface of the stainless steel body is thoroughly cleaned, and the sintered non-stick layer and stainless steel The body is bonded more firmly, and the texture of the stainless steel can be maintained to ensure the overall beauty of the stainless steel.

In order to solve the problems existing in the prior art, the technical solution drawn by the present invention is a treatment process for a non-stick surface of a stainless steel product, which comprises the following steps: polishing→shot blasting→cleaning→spraying→sintering, wherein:

(1) Polishing: Polishing the surface of the stainless steel first;

(2) Shot peening: blasting the surface of the stainless steel to form a uniform circular arc-shaped pit on the surface of the stainless steel;

(3) Cleaning: The surface of the blasted stainless steel is cleaned with a volatile organic solvent cleaning agent to remove the spray material on the surface of the stainless steel;

(4) Spraying: Spray the transparent non-stick material solution evenly on the stainless steel surface;

(5) Sintering: Sintering stainless steel sprayed with a transparent non-stick material solution in an oven for more than 10 minutes, The stainless steel non-stick layer is formed, and the sintering temperature is controlled at 20 (TC or more.

In the treatment process of the non-stick surface of the stainless steel product, the polishing treatment makes the surface roughness of the stainless steel between RaO.05 ~ 1 μηι.

In the treatment process of the non-stick surface of the stainless steel product, the shot blasting is performed by spraying the glass beads on the surface of the stainless steel to form a circular arc-shaped pit, and the surface roughness of the polished stainless steel is Ra 1 ~ 2 μη.

In the treatment process of the non-stick surface of the stainless steel product, the glass beads have a particle diameter of 60 to 160 mesh.

In the treatment process of the non-stick surface of the stainless steel product, the volatile organic solvent used in the cleaning is trichloroethylene.

In the non-stick surface treatment process of the stainless steel product, the cleaning agent used for cleaning is trichloroethylene heated to 50 to 70 °c.

In the treatment process of the non-stick surface of the stainless steel product, the cleaning is performed in an ultrasonic cleaner.

In the treatment process of the non-stick surface of the stainless steel product, the cleaning process is divided into three steps: The first step is rough washing, the stainless steel to be cleaned is immersed in trichloroethylene at 50-70 ° C, and the ultrasonic wave of 28 KHz is activated at the same time. The generator is cleaned by trichloroethylene and ultrasonic cleaning for 2 minutes. The second step is fine washing. The pre-washed stainless steel is immersed in trichloroethylene at 60-70 ° C, and the 68 KHz ultrasonic generator is started at the same time. The cleaning is continued for 2 minutes. The third step is steam drying. The stainless steel is blown with trichloroethylene vapor at 80-90 ° C for 2 minutes to volatilize the trichloroethylene adhered to the stainless steel surface.

In the treatment process of the non-stick surface of the stainless steel product, the spraying amount of the non-stick material solution is preferably 1 to 5 μηι, which is formed by sintering.

Process non-stick surface of the stainless steel products, the sintering time is 10 to 25 minutes, the sintering temperature is 200 ~ 280 ° C _o

The invention has the beneficial effects of replacing the gold steel sand with glass beads, forming a uniform arc-shaped four pits on the surface of the stainless steel, and cleaning the surface of the stainless steel with a volatile solvent as a cleaning agent to ensure the cleanliness of the stainless steel surface and avoiding Scale is generated on the surface of the stainless steel. At the same time, the invention can improve the surface strength of the stainless steel non-stick product, increase the adhesion of the stainless steel non-stick product surface and the non-stick layer, and enhance the surface corrosion resistance of the stainless steel non-stick product. Highlights the metallic texture of stainless steel non-stick products. Extend the service life of stainless steel non-stick products. The technical solution of the present invention will be further described below in conjunction with the embodiments.

DRAWINGS

1 is a schematic view showing the structure of a wok-shaped stainless steel body of the first embodiment;

2 is a schematic structural view of a stainless steel non-stick pan of the second embodiment.

3 is a schematic structural view of a flat-plate stainless steel member according to Embodiment 3;

4 is a schematic structural view of a stainless steel security door having a non-stick surface according to Embodiment 4.

detailed description

Embodiment 1:

Referring to Fig. 1, the stainless steel body 1 of the present embodiment is in the shape of a wok. The inner surface of the stainless steel body 1 is evenly covered with a circular arc shape, and the surface roughness of the inner surface of the stainless steel body 1 is Ι^ 1 ~ 2 μ m.

The stainless steel member described in this embodiment may be a body made of a single stainless steel material, or a pot body whose surface layer is made of stainless steel and whose core layer is made of a composite material of aluminum or copper.

In this embodiment, the processing of the stainless steel body is carried out by the following steps:

Polishing - shot peening - cleaning - where:

(1) Polishing: The inner surface of the stainless steel body 1 is mirror-polished to make the surface roughness of the stainless steel body between RaO. 05 ~ 1 μ ηι. By mirror-polishing the inner surface of the stainless steel body 1, the oxide layer and other impurities on the surface can be removed to ensure the cleanliness of the surface.

(2) Shot peening: 喷 blast the mirror polished surface of the stainless steel body 1 with glass beads, so that the inner surface of the pot is covered with a uniform arc-shaped ffl pit, so that the surface roughness of the stainless steel body is Ι^1 ~ 2 μ Ηι. Usually, the above glass beads have a particle size of 60 to 160 mesh. In this embodiment, the 100-mesh glass beads are used for shot peening. After the shot blasting, the inner surface roughness of the stainless steel body 1 is Ral. 3 μ ηι, so that the depth of the circular arc-shaped four pits on the surface of the stainless steel body is uniform and uniform. The metallic texture of the stainless steel surface.

In the past, the process used to grind the surface of the stainless steel pot with gold steel sand, and the shape of the gold steel sand was sharp and irregular. After the sand blasting, the surface of the stainless steel pot body was formed into tiny pits of different depths. During cleaning, the micro-particle impurities in the tiny four pits cannot be completely removed, so that after the non-stick material solution is sprayed, the non-stick layer cannot be fully bonded to the surface of the stainless steel pot body, and the non-stick layer is easily separated and detached. Through the shot peening process The inner surface of the stainless steel body 1 can be made to have a certain roughness, and the inner surface of the stainless steel body 1 can be strengthened, thereby improving the mechanical properties of the stainless steel pot and effectively improving the fatigue resistance of the stainless steel pot. Moreover, since the surface of the glass beads is even and smooth, the surface of the stainless steel body 1 is not damaged during the shot peening, and the metal texture of the surface of the stainless steel pot is not damaged. Moreover, the circular arc-shaped four pits having the same depth of four depressions formed on the surface thereof are favorable for thoroughly cleaning the surface of the stainless steel body 1 in the subsequent cleaning process, thereby ensuring the cleanliness of the surface of the stainless steel body 1 and facilitating the increase of the stainless steel body 1 and The adhesion and bonding force between the coatings make the non-stick layer 2 adhere to the stainless steel body 1 more firmly, prolonging the durability of the non-stick layer.

(3) Cleaning: The blasted stainless steel body 1 is cleaned with a heated volatile organic solvent as a cleaning agent to remove dirt on the surface, and not only can heat be used to decompose some oil adhering to the surface thereof. The surface of the cookware is cleaned, and the organic solvent is quickly volatilized after the cleaning is completed, so that the surface thereof is not scaled, and the bonding strength between the non-stick layer 2 and the stainless steel body 1 is improved to ensure the appearance of the pot surface. The organic solvent used in this embodiment is trichloroethylene. The specific cleaning process is divided into three steps: The first step is rough washing, and the stainless steel pot body to be cleaned is immersed in trichloroethylene at 50 ~ 70 °C, and simultaneously started. The 28 kHz ultrasonic generator was cleaned with an organic solvent and ultrasonic for 2 minutes. The second step is fine washing. The rough-washed stainless steel body is immersed in trichloroethylene at 60 ~ 70 °C, and the 68KHz ultrasonic generator is started at the same time for 2 minutes. The third step is steam drying, which is purged with trichloroethylene vapor at 80 to 90 °C for 2 minutes to volatilize the trichloroethylene adhered to the stainless steel body.

Due to the existing process, the surface of the stainless steel cookware is cleaned with untreated hard water. After the cleaning is completed, the surface of the stainless steel pot body is prone to scale, thereby affecting the bonding strength between the non-stick layer and the stainless steel pot body. In the present embodiment, the stainless steel pot body is cleaned by using an organic solvent. Since the organic solvent has a large volatility, after the cleaning is completed, the cleaning liquid remaining on the surface of the stainless steel pot body can be quickly volatilized and no knot is formed. The scale phenomenon ensures the surface cleanliness of the stainless steel body.

Of course, a volatile solvent having similar chemical properties such as trichloroethane can also be used as a cleaning agent. However, since the stainless steel cookware is made of a metal material and trichloroethylene has a strong metal degreasing effect, the embodiment of the present embodiment is Preferred embodiment.

In this embodiment, in order to reduce the cleaning cost and improve the cleaning efficiency, the cleaning is performed in the ultrasonic cleaning machine. Because the prior art is used for cleaning with a water pressure gun, it is easy to leave a cleaning corner and easy to leave. Affected by artificial factors, the cleaning effect can not meet the technical requirements, and the process is cleaned with an ultrasonic cleaning machine, which not only avoids the influence of artificial factors on the cleaning effect, but also does not leave a cleaning dead angle, and protects the cleaning of the stainless steel body. Clean. The ultrasonic cleaning machine obviously improves the cleaning quality of the product and makes the product quality more reliable.

Embodiment 2:

Referring to FIG. 2, the embodiment relates to a stainless steel non-stick pan having the stainless steel pot body of the first embodiment, and a sintered non-stick layer 2 is attached to the inner surface of the wok-shaped stainless steel body 1. The thickness of the sintered non-stick layer 2 is 1 to 5 μ η. The material of the sintered non-stick layer 2 contains silicon oxide, and the sintered non-stick layer 2 is formed by bonding a surface of the stainless steel body 1 by sintering after spraying a transparent non-stick material solution.

The processing method of the stainless steel non-stick pan described in this embodiment is performed by spraying and sintering on the basis of the first step.

(4) spraying: spraying the transparent non-stick material solution on the inner surface of the stainless steel body 1 uniformly, and spraying the transparent non-stick material solution to uniformly cover the arc-shaped four pits on the surface of the stainless steel body by spraying, spraying the non-stick material solution The amount should be 1 ~ 5 μ ηι of the thickness of the non-stick layer formed after sintering. Since the silicon oxide has a three-dimensional network structure, silicon oxide is doped into the non-stick material solution, so that the non-stick material solution can form a network structure on the surface of the stainless steel body 1 when dried, thereby lifting the non-stick layer 2 and the stainless steel. The bond strength between the bodies 1 and the finish of the non-stick layer.

(5) Sintering: The stainless steel pot sprayed with the transparent non-stick material solution is placed in the oven for sintering for 10 to 25 minutes, and the sintering temperature is 200 ~ 28 (TC, the non-stick material solution sprayed on the surface of the stainless steel body 1 by sintering The non-stick layer 2 was formed, and processing of a stainless steel pot having a non-stick surface was completed. In this example, the sintering time was 20 minutes, and the sintering temperature was controlled at 230 °C.

The stainless steel pot with non-stick surface made by the above process has a strong surface strength, and the non-stick layer 2 and the stainless steel body 1 are firmly combined, which increases the corrosion resistance and scratch resistance of the stainless steel pot surface, and prolongs the use of the stainless steel non-stick pan. It has a long life and a non-stick layer. It is only 1 ~ 5 μ ηι thick, which highlights the metal texture and overall aesthetics of the stainless steel pot surface. The stainless steel non-stick pan according to the present invention may be a cooker such as a wok, a steamer, a soup pot, a frying pan, a milk pot, a pressure cooker, a rice cooker, an electric pot, and the like. Embodiment 3:

Referring to FIG. 3, the flat-plate stainless steel member of the embodiment has a stainless steel body 1, and a surface of the stainless steel body 1 is evenly distributed with a circular arc-shaped four pits, and the surface roughness thereof is Ι^1~ 2μηι.

The processing of the flat-shaped stainless steel parts described in this embodiment is the same as that of the first embodiment: polishing - shot peening - cleaning - wherein:

(1) Polishing: First, the surface to be treated of the stainless steel body 1 is mirror-polished so that the surface roughness of the stainless steel body is between RaO.05 ~ 1 μηι. By mirror-polishing the surface of the stainless steel body 1, the oxide layer and other impurities on the surface can be removed to ensure the cleanliness of the surface.

(2) Shot peening: 喷 Use the glass beads to blast the mirror-polished surface of the stainless steel body 1 so that the surface is covered with a uniform arc-shaped ffl pit so that the surface roughness is Ι^1~2μηι. Generally, the above glass beads have a particle size of 60 to 160 mesh. In the embodiment, the 120-gauge glass beads are used for shot peening. After the shot blasting, the surface roughness of the stainless steel body 1 is Ral. 2μηι, so that the depth of the circular arc-shaped pits on the surface of the stainless steel body is uniform, and the surface of the stainless steel is protruded. metallic feel.

(3) Cleaning: The blasted stainless steel body 1 is cleaned with a heated volatile organic solvent as a cleaning agent to remove dirt on the surface, and not only can heat be used to decompose some oil adhering to the surface. The surface is cleaned, and the organic solvent is quickly volatilized after the cleaning is completed, so that the surface does not scale, and the bonding strength between the non-stick layer and the stainless steel body is improved, and the surface of the product is ensured. The organic solvent used in this embodiment is trichloroethylene. The specific cleaning process is divided into three steps: The first step is rough washing, and the stainless steel body to be cleaned is immersed in trichloroethylene at 50-70 ° C, and 28 KHz is started at the same time. The ultrasonic generator was cleaned with an organic solvent and ultrasonic for 3 minutes. The second step is fine washing. The rough-washed stainless steel body is immersed in trichloroethylene at 60-70 ° C, and a 68 KHz ultrasonic generator is started at the same time, and the cleaning is continued for 3 minutes. The third step is steam drying, which is purged with trichloroethylene vapor at 80 to 90 ° C for 3 minutes to volatilize the trichloroethylene adhered to the stainless steel body.

Of course, a volatile solvent having similar chemical properties such as trichloroethane can also be used as a cleaning agent. However, since the stainless steel product is made of a metal material and trichloroethylene has a strong metal degreasing effect, the embodiment of the present embodiment is Preferred embodiment.

In this embodiment, in order to reduce the cleaning cost and improve the cleaning efficiency, the cleaning is performed in ultrasonic cleaning. Cleaning in the washing machine, because the prior art is washed with a water pressure gun, it is easy to leave a cleaning dead angle and is susceptible to artificial factors, so that the cleaning effect cannot meet the technical requirements, and the process is cleaned by an ultrasonic cleaning machine. It not only avoids the influence of artificial factors on the cleaning effect, but also leaves no cleaning corners and protects the cleanliness of stainless steel parts. The ultrasonic cleaning machine obviously improves the cleaning quality of the product and makes the product quality more reliable.

Embodiment 4:

Referring to FIG. 4, the embodiment is a stainless steel security door having a non-stick surface, and the stainless steel security door having a non-stick surface includes the stainless steel member of the first embodiment, and the workpiece is a security door. The stainless steel body 1 having a circular arc-shaped four-pit evenly distributed on the surface thereof has a sintered non-stick layer 2 attached thereto, and the sintered non-stick layer 2 has a thickness of 1 to 5 μm. The material of the sintered non-stick layer 2 contains silicon oxide, and the sintered non-stick layer 2 is formed by spraying a solution of a transparent non-stick material onto the surface of a stainless steel door and then sintering.

The processing method of the stainless steel anti-theft door having the non-adhesive surface exemplified in the embodiment is sprayed and sintered on the basis of the first step.

(4) Spraying: uniformly spray the transparent non-stick material solution on the surface of the stainless steel body 1 of the security door, and uniformly cover the arc-shaped ffl pit of the surface of the stainless steel body 1 by spraying, the non-stick material solution The amount of spray should be 1 ~ 5 μ ηι of the thickness of the non-stick layer formed after sintering. Since the silicon oxide has a three-dimensional network structure, silicon oxide is doped into the non-stick material solution, so that the non-stick material solution can form a network structure on the surface of the stainless steel body 1 when dried, thereby lifting the non-stick layer 2 and the stainless steel. The bond strength between the bodies 1 and the finish of the non-stick layer.

(5) Sintering: The stainless steel anti-theft facade sprayed with the non-stick material solution is placed in the oven for 10 to 25 minutes, and the sintering temperature is 200 ~ 28 (TC, the non-stick material solution sprayed on the surface of the stainless steel body 1 by sintering The non-stick layer 2 was formed, and the processing of the stainless steel security door having a non-stick surface was completed. In this embodiment, the sintering time was 20 minutes, and the sintering temperature was controlled at 240 °C.

The stainless steel anti-theft door made of the above process has a non-stick surface, the surface strength is 髙, the non-stick layer 2 and the stainless steel door are firmly combined, the corrosion resistance and scratch resistance of the stainless steel door surface are enhanced, and the service life of the stainless steel anti-theft door is prolonged. , and the non-stick layer is uniform and transparent, and the thickness is only 1 ~ 5 μ ηι, highlighting the stainless steel security door surface Metal texture and overall aesthetics.

Embodiment 5:

The embodiment provides a treatment process for a non-stick surface of a stainless steel product, and is suitable for processing stainless steel decorative materials, stainless steel security doors, stainless steel kitchen appliances, and the like. The process comprises the following steps: polishing → shot blasting → washing → spraying → sintering, wherein:

(1) Polishing: The surface of the stainless steel body of the stainless steel product is mirror-polished to make the surface roughness of the stainless steel body between RaO. 05 ~ 1 μ ηι. Through the mirror polishing of the stainless steel body surface, the oxide layer and other impurities on the stainless steel surface can be removed to ensure the cleanliness of the stainless steel surface.

(2) Shot peening: 喷 The mirror polished surface of the stainless steel body is shot blasted with glass beads to form a uniform arc-shaped ffl pit on the surface of the stainless steel body; surface roughness Ral ~ 2 m. Usually the above glass beads have a particle size of

60 ~ 160 mesh is more suitable. In this embodiment, 100 to 120 mesh glass beads are used for shot peening, and the surface roughness of the stainless steel body after shot blasting is Ral. 2 ~ 1. 3 μ ηι. The depth of the circular arc-shaped pit on the surface of the stainless steel body is uniform, and the metal texture of the stainless steel surface is highlighted.

Through the shot peening process, the surface of the stainless steel body can be obtained with a certain roughness, and the surface of the stainless steel body can be strengthened, thereby improving the mechanical properties of the stainless steel body and effectively improving the fatigue resistance of the stainless steel body. Moreover, the surface of the stainless steel body forms a circular arc-shaped four pits, which is beneficial to thoroughly clean the surface of the stainless steel body in the subsequent cleaning process, thereby ensuring the cleanliness of the surface of the stainless steel body, and is beneficial to increasing the adhesion and bonding between the stainless steel body and the coating. The force makes the non-stick layer adhere to the stainless steel body more firmly, prolonging the durability of the non-stick layer.

Since the surface of the glass bead is even and smooth, when the shot peening is performed, scratches on the surface of the stainless steel body are not caused, and the arc-shaped four pits having the same depth of four pits formed on the surface thereof are easily cleaned. The cleanliness of the stainless steel body surface is ensured, thereby improving the bonding strength between the non-stick layer and the stainless steel body, and prolonging the service life of the stainless steel product.

(3) Cleaning: The blasted stainless steel body is cleaned with a heated volatile organic solvent as a cleaning agent to remove dirt on the surface, which not only can be used to decompose some oil adhering to the surface, ensuring The surface of the stainless steel body is cleaned, and the organic solvent is quickly volatilized after the cleaning is completed, so that the surface thereof is not scaled, and the bonding strength between the non-stick layer and the stainless steel body is improved, and the surface is beautiful. Ben The organic solvent used in the embodiment is trichloroethylene. The specific cleaning process is divided into three steps: The first step is rough washing, and the stainless steel body to be cleaned is immersed in trichloroethylene at 50-70 ° C, and 28 KHz is started at the same time. The ultrasonic generator is cleaned by an organic solvent and ultrasonic cleaning for 2 to 3 minutes. The second step is fine washing. The pre-cleaned stainless steel body is immersed in trichloroethylene at 60 ~ 70 ° C, and the 68 KHz ultrasonic generator is started at the same time, and the cleaning is continued for 2 to 3 minutes. The third step is steam drying, which is purged with trichloroethylene vapor at 80 to 90 °C for 2-3 minutes to volatilize the trichloroethylene adhered to the stainless steel body.

Because the existing process uses the untreated hard water to clean the surface of the stainless steel cookware, after the cleaning is completed, the surface of the stainless steel cookware is prone to scale, thereby affecting the bonding strength between the non-stick layer and the stainless steel cookware; The organic solvent is used to clean the stainless steel body, and since the organic solvent has a large volatility, after the cleaning is completed, the cleaning liquid remaining on the surface of the stainless steel body can be quickly volatilized without scaling, thereby effectively ensuring The surface cleanliness of the stainless steel body.

In this embodiment, in order to reduce the cleaning cost and improve the cleaning efficiency, the cleaning is performed in the ultrasonic cleaning machine. Because the prior art is cleaned with a water pressure gun, it is easy to leave a cleaning corner and is susceptible to labor. The influence of the factors makes the cleaning effect not meet the technical requirements, and the process is cleaned by the ultrasonic cleaning machine, which not only avoids the influence of the artificial factors on the cleaning effect, but also does not leave a cleaning dead angle, and protects the cleaning of the stainless steel body. The ultrasonic cleaning machine clearly improves the cleaning quality of the product and makes the product quality more reliable.

(4) Spraying: Spray the transparent non-stick material solution evenly on the surface of the stainless steel body, and spray the transparent non-stick material solution evenly on the arc-shaped four pits on the surface of the stainless steel body by spraying, and spray the non-stick material solution. The thickness of the non-stick layer formed after sintering should be 1 ~ 5 μ ηι. Since the silicon oxide has a three-dimensional network structure, silicon oxide is doped into the non-stick material solution, so that the non-stick material solution can form a network structure on the surface of the stainless steel body when dried, thereby enhancing the non-stick layer and the stainless steel body. Bond strength and non-stick layer finish.

(5) Sintering: The stainless steel body sprayed with the transparent non-stick material solution is placed in the oven for sintering 10 ~ 25 In minutes, the sintering temperature was 200 to 280 ° C, and the transparent non-stick material solution sprayed on the surface of the stainless steel body was formed into a non-stick layer by sintering. In this embodiment, the sintering time is 20 minutes, and the sintering temperature is controlled at 230 to 250. C.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of protection and application of the present invention. The stainless steel articles having a non-stick surface may be stainless steel decorative materials, stainless steel security doors, kitchen cabinets, cooktops, Stainless steel kitchen utensils such as non-stick pans, gas stoves, sinks or range hoods. Products made by equivalent technical means employed in accordance with the design concept of the present invention are within the scope of protection of the present invention.

Claims

Claim

A stainless steel member having a stainless steel body, characterized in that: at least one surface of the stainless steel body is uniformly distributed with arc-shaped pits, and the surface roughness thereof is Ral ~ 2 m.

2. A stainless steel article having a non-stick surface, comprising: the stainless steel member according to claim 1, wherein a sintered non-stick layer is adhered to a surface of the stainless steel body uniformly distributed with the arc-shaped four pits; The sintered non-stick layer has a thickness of 1 to 5 μm.

3. A stainless steel article having a non-stick surface according to claim 2, wherein: the material of the sintered non-stick layer contains silicon oxide.

4. The stainless steel article having a non-stick surface according to claim 3, wherein: the sintered non-stick layer is formed by spraying a transparent non-stick material solution onto the surface of the stainless steel body and then sintering.

5. The stainless steel article having a non-stick surface according to claim 2 or 3 or 4, wherein: the stainless steel product is a stainless steel decorative material, a stainless steel security door, a kitchen cabinet, a cooktop, a non-stick pan, a gas stove Stainless steel kitchen supplies such as sinks or range hoods.

6. A process for treating a non-stick surface of a stainless steel product, comprising the steps of: polishing→spraying→cleaning→spraying→sintering, wherein:

(1) Polishing: Polishing the surface of the stainless steel first;

(2) Shot peening: shotting the surface of the stainless steel to form a uniform circular arc-shaped pit on the surface of the stainless steel;

(3) Cleaning: The surface of the blasted stainless steel is cleaned with a volatile organic solvent cleaning agent to remove the spray on the stainless steel surface;

(5) Sintering: Sintering stainless steel sprayed with a transparent non-stick material solution in an oven for more than 10 minutes to form a stainless steel non-stick layer, and the sintering temperature is controlled at 20 (TC or more).

7. The process for treating a non-stick surface of a stainless steel article according to claim 6, wherein: the polishing treatment causes a roughness of the surface of the stainless steel to be between RaO.05 and Ιμηι.

8. The process for treating a non-stick surface of a stainless steel product according to claim 6, wherein: the shot blasting is performed by spraying glass beads on the surface of the stainless steel to form a uniform arc-shaped four pits, and the blasted stainless steel. The surface roughness is Ra 1 ~ 2μηι.

9. The process for treating a non-stick surface of a stainless steel article according to claim 8, wherein: said glass beads have a particle size of 60 to 160 mesh.

10. The process for treating a non-stick surface of a stainless steel product according to claim 6, wherein the volatile organic solvent used for cleaning is trichloroethylene.

11. The process for treating a non-stick surface of a stainless steel product according to claim 10, wherein: the cleaning agent used for cleaning is trichloroethylene heated to 50 to 70 °C.

A process for treating a non-stick surface of a stainless steel product according to claim 11, wherein: said cleaning is performed in an ultrasonic cleaner.

13. The process for treating a non-stick surface of a stainless steel product according to claim 12, wherein: the cleaning process is divided into three steps: the first step is rough washing, and the stainless steel to be cleaned is immersed in 50 to 70 ° C. In the trichloroethylene, the 28KHz ultrasonic generator is started at the same time, and the mixture is cleaned by trichloroethylene and ultrasonic cleaning for 2 to 3 minutes. The second step is fine washing, and the pre-cleaned stainless steel is immersed in 60 ~ 70 °C. In trichloroethylene, start the 68KHz ultrasonic generator at the same time and continue to clean for 2~3 minutes. The third step is steam drying. Boil the stainless steel with 80~90°C trichloroethylene vapor for 2~3 minutes to make it adhere to stainless steel. The surface of trichloroethylene is volatilized clean.

The process for treating a non-stick surface of a stainless steel product according to claim 6, wherein the non-stick material solution is sprayed in a thickness of 1 to 5 μm.

15. The process for treating a non-stick surface of a stainless steel article according to claim 6, wherein: the sintering time is 10 to 25 minutes, and the sintering temperature is 200 to 280 °C.