CN220832722U - Physical non-stick structure and cooking utensil - Google Patents

Abstract

The application discloses a physical non-stick structure and a cooking utensil, which are applied to the surface of a metal substrate. The physical non-stick structure and the cooking utensil have physical non-stick performance, and compared with the traditional method, the method has simple process and low cost.

Description

Physical non-stick structure and cooking utensil

Technical Field

The application relates to the technical field of cooking appliances, in particular to a physical non-stick structure and a cooking appliance.

Background

The non-stick performance of the existing cooking utensil is realized by coating a chemical coating, generally polytetrafluoroethylene, on the surface of the cooking utensil. The polytetrafluoroethylene coating is non-toxic in normal state, but will begin to volatilize when the heated temperature of the coating reaches 260 ℃ and will begin to decompose when the temperature reaches 350 ℃. The use temperature of the non-stick pan with polytetrafluoroethylene coating generally cannot exceed 250 ℃. However, in general, the heating temperature of a cooking appliance such as a wok often exceeds 260 ℃, so that the safety hazard exists. In addition, the coating is not wear-resistant, the risk of falling exists, and the coating is easy to be eaten by mistake along with food, so that the health is affected.

Disclosure of Invention

In order to solve the technical problems, the application provides the physical non-stick structure and the cooking utensil, which can improve the non-stick performance of the surface of the cooking utensil and have the advantages of wear resistance and difficult falling.

In a first aspect, the present application provides a physical non-stick structure applied to a metal substrate surface, where the physical non-stick structure includes a shot blasting layer disposed on the metal substrate surface and a physical vapor deposition layer disposed on the shot blasting layer surface.

By adopting the technical scheme, the concave-convex structure is firstly formed on the surface of the metal base material through shot blasting, and the concave-convex structure can form a hydrophobic structure on the surface of the metal base material, but the hydrophobic structure is not wear-resistant. After the concave-convex structure is shot-blasted, a physical vapor deposition layer is plated on the surface of the concave-convex structure, and the physical vapor deposition layer has the characteristic of wear resistance. The physical vapor deposition layer has a shape similar to the concave-convex structure, and the surface of the physical vapor deposition layer has hydrophobicity similar to the concave-convex structure. Therefore, the physical non-stick structure machined on the surface of the metal substrate provides the metal surface with the characteristics of wear resistance and non-stick.

With reference to the first aspect, in a further aspect, the shot blasting layer and the metal substrate are in an integral structure, and the physical vapor deposition layer is in direct contact with the shot blasting layer.

Through adopting above-mentioned technical scheme, directly pass through shot peening at metal substrate surface and go out concave-convex structure, integrative structural strength is higher, can reduce the risk that drops that two body structures brought. The physical vapor deposition layer is directly contacted with the concave-convex structure, and a transition layer is not arranged in the middle, so that the processing procedures can be reduced, the processing cost can be reduced, and the wear-resistant and non-sticky performance can be achieved.

With reference to the first aspect, in a further aspect, an electrolyte layer is further disposed between the shot blasting layer and the physical vapor deposition layer.

Through adopting above-mentioned technical scheme, make pan internal surface structure micron, nanometer V type, C type, U type or the concave body of random size under the effect of electrolysis, can further reduce the area of contact of edible material and the pan body, add the repulsion dual function that the air thermal expansion produced flow in the concave body, can realize non-sticky effect well. In addition, the electrolysis can form an oxide film on the surface of the shot blasting layer so as to change the color and improve the performance of the shot blasting layer and improve the performance and grade of the product.

With reference to the first aspect, in a further aspect, a plasma polishing layer is further disposed between the shot blasting layer and the physical vapor deposition layer.

By adopting the technical scheme, the micro-or nano-scale concave-convex structure can be further processed on the surface of the shot blasting layer, so that the hydrophobic property is further improved, and the non-sticking property of the surface of a product is improved. The plasma polishing layer can also improve the brightness of the surface of the product and the quality of the product

With reference to the first aspect, in a further aspect, the vickers hardness of the metal substrate is 100 or more.

Experimental tests show that the shot blasting and Physical Vapor Deposition (PVD) processing technology has better non-stick performance and wear resistance when applied to the surface of a metal substrate with the Vickers hardness being more than 100.

In combination with the first aspect, in a further scheme, the surface of the shot blasting layer forms a concave-convex structure with a height difference of 45-85 micrometers, and the thickness of the physical vapor deposition layer is 0.8-1.45 micrometers.

Experiments show that the concave-convex structure with the height difference of 45-85 microns or the concave-convex structure with the height difference of 55-75 microns is convenient to process and has good hydrophobic performance. The thickness of the physical vapor deposition layer is 0.8-1.45 micrometers, so that when the physical vapor deposition layer covers the surfaces of the concave structures and the convex structures, the physical vapor deposition layer can have a shape similar to the shapes of the concave structures and the convex structures, and the surfaces of the physical vapor deposition layer have better non-sticking performance and wear resistance in combination with the first aspect.

By adopting the technical scheme, the physical non-stick structure has the advantages of simple structure, low processing cost and physical non-stick performance.

In a second aspect, the present application provides a cooking appliance comprising a body formed from a metal substrate, and further comprising the physical non-stick structure of the first aspect.

Through adopting above-mentioned technical scheme, have the cooking utensil of physical non-stick structure, can improve non-stick performance when cooking food, reduce food adhesion and at body surface probability, be convenient for more wash cooking utensil, promoted the culinary art enjoyment.

With reference to the second aspect, in a further aspect, the shot blasting layer is disposed on the inner surface of the body and forms a concave-convex structure with a height difference of 55-75 microns, the physical vapor deposition layer at least partially covers the shot blasting layer, and the thickness of the physical vapor deposition layer is 0.8-1.45 microns.

By adopting the technical scheme, the bottom of the inner surface of the cooking appliance is contacted with oil, and the physical non-stick structure is arranged in the heated area, so that the non-stick performance of the bottom can be improved when the cooking appliance is used for cooking. The physical non-stick structure is arranged in the bottom area of the inner surface, so that the non-stick wear-resisting property of the main cooking area of the bottom can be realized, and the use of materials can be reduced, thereby reducing the cost. The physical non-stick structure can be arranged on all inner surfaces of the cooking utensil according to the requirement, so that the integral non-stick performance of the inner surfaces of the cooking utensil is improved. The concave-convex structure with the height difference of 55-75 microns is convenient to process and has good hydrophobic performance.

With reference to the second aspect, in a further aspect, the topography of the surface of the physical vapor deposition layer is similar to the topography of the surface of the peened layer that it covers.

By adopting the technical scheme, the physical vapor deposition layer has the characteristic of wear resistance, has the shape similar to the concave-convex structure, and has the hydrophobicity similar to the concave-convex structure on the surface of the physical vapor deposition layer. Therefore, the physical non-stick structure machined on the surface of the metal substrate provides the metal surface with the characteristics of wear resistance and non-stick.

In summary, the application has at least one of the following beneficial technical effects:

1. The application has physical non-stick structure, so that the metal surface has the characteristics of wear resistance and physical non-stick.

2. The physical non-stick structure can reduce the falling risk brought by a two-body structure and has higher strength.

3. The physical vapor deposition layer is directly contacted with the shot blasting layer, and the middle part of the physical vapor deposition layer is not provided with a transition layer, so that the bonding strength can be ensured, the processing procedures can be reduced, and the processing cost can be reduced.

4. The cooking utensil can meet the wear resistance and non-stick performance of the cooking utensil during normal cooking, and can improve the cost performance of the cooking utensil.

Drawings

FIG. 1 is a schematic structural view of a metal substrate having a first embodiment of the physical non-stick structure of the present application;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic view in section B-B of FIG. 2;

FIG. 4 is a schematic structural view of a metal substrate having a second embodiment of the physical non-stick structure of the present application;

FIG. 5 is an enlarged schematic view of FIG. 4 at C;

fig. 6 is a schematic structural view of a first embodiment of the cooking appliance of the present application;

Fig. 7 is a schematic structural view of a second embodiment of the cooking appliance of the present application.

Reference numerals:

100. A metal substrate; 200. a physical non-stick structure; 2. a shot blasting layer; 21. pit; 3. a physical vapor deposition layer; 4. an electrolytic layer; 41. a protrusion; 5. a pot body; 51. an inner surface; 511. a bottom region; 52. an outer surface; 521. a pot opening area; 6. a handle; a. hole center distance; b. pit depth.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. Features of the embodiments described below may be combined with each other without conflict.

The cooking appliance in the application comprises a catering appliance and a cooking appliance.

Example 1

Referring to fig. 1-3, a schematic structure of one embodiment of a physical non-stick structure 200 is shown. The physical non-stick structure 200 is disposed on at least a portion of the surface of the metal substrate 100, the physical non-stick structure 200 includes a shot blasting layer 2 disposed on the surface of the metal substrate 100 and a physical vapor deposition layer 3 disposed on the surface of the shot blasting layer 2, and the surface of the physical vapor deposition layer 3 has a similar appearance to the surface of the shot blasting layer 2 covered by the physical vapor deposition layer.

Referring to fig. 1, the physical non-stick structure 200 in the present embodiment is formed by integrally processing a predetermined area on the surface of the metal substrate 100 by a processing method such as shot blasting or rolling, and PVD coating.

Referring to fig. 2, the physical non-adhesive structure 200 includes a shot-blasted layer 2, in which the shot-blasted layer 2 is a concave-convex structure processed on the surface of the metal substrate 100 by a shot-blasting method, the shot-blasted layer 2 is formed by regularly or irregularly arranging a plurality of pits 21, the section of the pits 21 in the embodiment is circular, and a polygon, such as a hexagon or a quadrilateral, can be processed according to design requirements by rolling or other processing methods. The diameter of the pit 21 is 0.3-0.95 mm, preferably 0.4-0.65 mm, the pit 21 is a spherical pit 21 formed by spraying steel shots of 0.6-1 mm to the surface of the metal substrate 100 under a pressure of 2Mpa-8Mpa, and the diameter of the pit 21 is a spherical diameter. The hole center distance a of the pit 21 ranges from 0.3 to 0.8 mm, and is preferably 0.6 mm, and the hole center distance a refers to the center distance of the pit 21. If the pit 21 is a polygon, the polygon may be uniformly distributed by rolling or may be irregularly arranged as required, and the diameter of the inscribed circle of the polygon is 0.3-0.95 mm, and most preferably 0.4-0.65 mm.

Referring to fig. 3, shot blasting is performed with 0.6-1 mm steel shot at 2Mpa-8Mpa for 3 seconds-5 minutes onto the surface of the metal substrate 100 or the formed product to form a shot blast layer 2 having spherical pits 21. The shot blasting layer 2 is a surface formed by connecting the pits 21 and the protrusions 41 between the pits 21, which are formed by shot blasting the inner surface 51 of the body after the body is formed, and the pit depth b is 45-85 micrometers, and is optimally 55-75 micrometers. And heating the shot-blasted metal substrate 100 or the molded product to 200-500 ℃ and placing the metal substrate or the molded product in a vacuum environment, and performing PVD (physical vapor deposition) coating on the shot-blasted layer 2. The shot blasting layer 2 and the metal substrate 100 are integrated, and the physical vapor deposition layer 3 is in direct contact with the shot blasting layer 2.

At least part of the surface of the shot blasting layer 2 is provided with a physical vapor deposition layer 3, and the appearance of the surface of the physical vapor deposition layer 3 is similar to the appearance of the surface of the covered shot blasting layer 2 by setting and controlling the PVD coating process parameters, so that the non-sticking effect of the surface of the metal substrate 100 is achieved. The physical vapor deposition layer 3 is in direct contact with the shot blasting layer 2, and the thickness of the physical vapor deposition layer 3 is 0.8-1.45 micrometers. Conventional PVD coatings cannot be bonded in direct contact with the metal substrate 100 and a transition layer is required between the PVD coating and the metal substrate 100, for example, the application nos. CN202121169683.5 and CN202222426611.5 all use the transition layer approach to bond. The transition layer has good binding force to the coating and good binding force to the metal substrate 100, so that the PVD coating and the metal substrate 100 are guaranteed to have good binding force and are not easy to fall off. Through theoretical analysis and long-term experimental tests, the physical non-stick structure 200 of the application researches a new structure, and the corresponding concave-convex structure is directly shot-blasted on the surface of the metal substrate 100, so that good binding force between the PVD coating and the metal substrate 100 can be realized, the non-stick property of the surface of the metal substrate 100 can be improved, the wear-resistant performance can be realized, and the wear-resistant non-stick property of the surface of the metal substrate 100 can be maintained for a long time. The metal base material 100 is a metal material such as carbon steel, alloy steel, stainless steel, or titanium alloy.

Comparison test of different parameter performances:

As can be seen from performance comparison tests, the physical vapor deposition thickness of items 5-8 is in the range of 0.8-1.45um, the comprehensive performance of the shot blasting pit 21 with the depth of 45-85um is optimal, and the cost of the parameter range is reasonable.

When the deposition thickness of the physical vapor phase is less than 0.8um and the pit depth b of shot blasting is less than 45um, the binding force of the plating layer is poor and can only reach the level of 3, and the plating layer is easy to fall off; hardness is 600-800HV, hardness is insufficient, and wear resistance is poor; the omelette has a class III nonstick effect and a poor nonstick effect.

When the deposition thickness of the physical vapor phase is less than 0.8um and the pit depth b of shot blasting is more than 85um, the hardness of the plating layer is 300-800HV, the hardness is insufficient and the wear resistance is poor; the omelette has a class III nonstick effect and a poor nonstick effect.

When the deposition thickness of the physical vapor phase is more than 1.45um and the pit depth b of the shot blasting is less than 45um, the binding force of the plating layer is very poor and can only reach the level of 3, and the plating layer is easy to fall off; the hardness of 1500-2000HV can meet the requirements, but raw materials are wasted, the cost is increased, the fried eggs are not sticky, the effect is class III, and the non-sticky effect is poor.

When the deposition thickness of the physical vapor is larger than 1.45um and the pit depth b of shot blasting is larger than 85um, the binding force can reach more than 2 levels, the hardness can reach the requirements from 1500 HV to 2000HV, but raw materials are wasted, the cost is increased, the fried egg is not sticky, the effect is III levels, and the non-sticky effect is poor.

When the deposition thickness of the physical vapor is 0.8-1.45um and the pit depth b of shot blasting is 45-85um, the binding force can reach the level of 2, the hardness is 1500-2000HV, the omelette is not sticky, the effect is level II, and the cost performance is highest.

Through experimental tests, the metal substrate 100 with the vickers hardness of 100 or more has the best effect of combining the physical non-stick structure 200.

Example two

Referring to fig. 4 and 5, a difference from the embodiment is that an electrolytic layer 4 or a plasma polishing layer is further provided between the shot blasting layer 2 and the physical vapor deposition layer 3.

Referring to fig. 4, the convex structure is machined on the surface of the shot blasting layer 2 by electrolytic or plasma polishing, and the machining of the convex structure in this embodiment is electrolytic machining.

Referring to fig. 5, the convex structure includes a plurality of protrusions 41 at least disposed on at least a portion of the surface of the shot blasting layer 2, wherein the height of the protrusions 41 is 45-85 micrometers, and the electrolytic layer 4 is a surface formed by connecting the protrusions 41 and the protrusions 41. In the present figure, the structure of the protrusions 41 is only illustrated, and the protrusions 41 are irregularly shaped when the surface of the shot blast layer 2 is processed by electrolytic or plasma polishing, but the height of each protrusion 41 needs to be controlled to 45-85 μm.

The surface of part of the shot blasting layer 2 is provided with an electrolytic layer 4 or/and a plasma polishing layer, and the surfaces of part of the electrolytic layer 4/plasma polishing layer or part of the shot blasting layer 2 and part of the electrolytic layer 4/plasma polishing layer are plated with a physical vapor deposition layer 3 coating, so that various combined structures can be formed on the surface of the metal substrate 100, different surface effects can be realized according to different use requirements, or different surface effects can be realized on the surface of the metal substrate 100 in different areas.

Example III

Referring to fig. 6, the present embodiment discloses a cooking apparatus, specifically a wok, which includes a wok body 5 and a handle 6, wherein a bottom area 511 of an inner surface 51 of the wok body 5 is provided with a physical non-stick structure in the first embodiment. In practical applications, in order to achieve better non-stick performance, the inner surface 51 of the pan body 5 may be provided with a physical non-stick structure. In the embodiment, the frying pan is only used for illustration, and in practical application, the physical non-stick structure can be applied to the surfaces of all cooking appliances, including tableware and cooking appliances, including containers (soybean milk machine cup, electric rice cooker, pressure cooker, electric hot pot liner or oven box, etc.), juicer cup, scoop, etc. which are not limited to the cooking appliances.

Example IV

Referring to fig. 7, the difference between the present embodiment and the third embodiment is that the outer surface 52 of the pan body 5 of the present embodiment is also provided with a physical non-stick structure, and the physical non-stick structure is disposed at a position far away from the pan bottom, and in practical application, if cost is not considered, in order to achieve good non-stick performance of the outer surface 52, the physical non-stick structure may be disposed in all areas of the outer surface 52. Or the shot blasting layer 2 and the convex structure are integrally arranged on the outer surface 52 of the pot body 5, which is far away from the pot opening area 521 at the bottom.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present invention, and various changes, modifications, substitutions and alterations can be made herein without departing from the spirit and scope of the invention, which are to be defined by the appended claims.

Claims (7)

1. The utility model provides a physical non-stick structure (200), is applied to metal substrate (100) surface, its characterized in that, physical non-stick structure (200) including set up in peening layer (2) on metal substrate (100) surface with set up in physical vapor deposition layer (3) on peening layer (2) surface, peening layer (2) with metal substrate (100) structure as an organic whole, physical vapor deposition layer (3) with peening layer (2) direct contact, peening layer (2) with still be equipped with electrolyte layer (4) or plasma polishing layer between physical vapor deposition layer (3).

2. The physical non-stick structure (200) of claim 1, wherein the metal substrate (100) has a vickers hardness of 100 or greater.

3. The physical non-stick structure (200) according to claim 1, wherein the surface of the shot blasting layer (2) forms a concave-convex structure with a height difference of 45-85 micrometers, and the thickness of the physical vapor deposition layer (3) is 0.8-1.45 micrometers.

4. The physical non-stick structure (200) of claim 1, wherein the physical non-stick structure (200) consists of a peened layer (2), an electrolytic layer (4) and a physical vapor deposition layer (3) disposed on a surface of the metal substrate (100).

5. Cooking appliance comprising a body formed from a metal substrate (100), characterized in that the body surface is provided with a physical non-stick structure (200) according to any one of claims 1-4.

6. Cooking appliance according to claim 5, characterized in that the shot-peening layer (2) is provided on the inner surface (51) of the body and forms a relief structure with a height difference of 55-75 microns, the physical vapor deposition layer (3) at least partially covering the shot-peening layer (2).

7. Cooking appliance according to claim 6, characterized in that the topography of the surface of the physical vapor deposition layer (3) is similar to the topography of the surface of the shot peening layer (2) it covers.