Metal pot with antibacterial and mildew-proof functions

Abstract

The utility model discloses a metal pot with antibacterial and mildew-proof functions, which comprises a metal pot body consisting of a base material layer, a pressure stress protective layer and an antibacterial and mildew-proof layer, a pressure stress protection layer is arranged on the outer surface of the base material layer, and an antibacterial mildew-proof layer is arranged on the surface of one side of the pressure stress protection layer. The laser peening technology is adopted, the surface of the metal pot body is rapidly irradiated through laser, the plasma explosion effect is generated, metal on the surface of the pot compresses plastic strain, and therefore a full-covering pressure stress protection layer is formed on the surface, the pressure stress protection layer can effectively resist stress corrosion, and the service life of the pot is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of kitchenware technology, specifically to a metal pot with antibacterial and anti-mildew functions. Background Technology

[0002] Metal cookware is a common kitchen utensil, widely used for cooking and food processing. They are typically made of different types of metals, such as stainless steel, aluminum, copper, and iron. The corrosion types of metals like stainless steel used in cookware include chemical corrosion, electrochemical corrosion, intergranular corrosion, and stress corrosion, with stress corrosion accounting for over 45% of all metal corrosion.

[0003] Corrosive media and tensile stress are the two essential factors for stress corrosion of cookware. The tensile stress can be caused by uneven external heating, extreme cold or heat, or residual tensile stress generated during the manufacturing process.

[0004] Therefore, cookware exposed to corrosive acidic or alkaline environments, especially if it already has residual tensile stress, will further deteriorate its corrosion resistance. Utility Model Content

[0005] The purpose of this invention is to provide a metal pot with antibacterial and anti-mildew functions to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A metal pot with antibacterial and anti-mildew properties, including

[0008] The metal pot body is composed of a substrate layer, a compressive stress protection layer, and an antibacterial and mildew-proof layer.

[0009] A compressive stress protection layer is provided on the outer surface of the substrate layer, and an antibacterial and antifungal layer is provided on one side surface of the compressive stress protection layer.

[0010] Preferably, the substrate layer is made of stainless steel;

[0011] Preferably, the compressive stress protective layer is made of stainless steel and is processed by laser shot peening technology;

[0012] Preferably, the thickness of the compressive stress protective layer is greater than 1.0 mm;

[0013] Preferably, the antibacterial and antifungal layer is a ceramic nano-copper antibacterial coating, and is formed by nano-copper-zinc compounding;

[0014] Preferably, mounting holes are symmetrically arranged on both sides of the upper end of the metal pot body, and an annular groove is provided on the outer side of the inner wall of the metal pot body near the mounting holes.

[0015] Preferably, the diameter of the annular groove is larger than the diameter of the mounting hole and both are on the same central axis.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This metal pot with antibacterial and anti-mildew functions adopts laser shot peening technology. By rapidly irradiating the surface of the metal pot body with a laser, a plasma explosion effect is generated, causing the metal surface of the pot to undergo compressive plastic strain, thereby forming a fully covered compressive stress protective layer on the surface. The compressive stress protective layer can effectively resist stress corrosion and improve the service life of the pot.

[0018] 2. This metal pot with antibacterial and anti-mildew functions, after laser shot peening, forms a ceramic nano-copper antibacterial coating through a nano-copper-zinc composite. The antibacterial and anti-mildew layer is located on the side of the metal pot body that contacts food, which can inhibit the growth and reproduction of bacteria and keep the pot hygienic. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the metal pot body of this utility model.

[0020] Figure 2 This is a front view schematic diagram of the mounting hole structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the compressive stress protective layer structure of this utility model.

[0022] In the diagram: 1. Metal pot body; 2. Substrate layer; 3. Compressive stress protection layer; 4. Antibacterial and mildew-proof layer; 5. Mounting hole; 6. Annular groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-3 As shown, this utility model provides a technical solution:

[0025] A metal pot with antibacterial and anti-mildew functions includes a metal pot body 1, which is composed of a substrate layer 2, a compressive stress protection layer 3, and an antibacterial and anti-mildew layer 4. The compressive stress protection layer 3 is provided on the outer surface of the substrate layer 2, and the antibacterial and anti-mildew layer 4 is provided on one side surface of the compressive stress protection layer 3. The substrate layer 2 is made of stainless steel. The compressive stress protection layer 3 is made of stainless steel and is processed by laser shot peening technology. The thickness of the compressive stress protection layer 3 is greater than 1.0 mm. The antibacterial and anti-mildew layer 4 is a ceramic nano-copper antibacterial coating, which is formed by nano-copper-zinc composite. The upper end of the metal pot body 1 is symmetrically provided with mounting holes 5 on both sides, and an annular groove 6 is provided on the inner wall of the metal pot body 1 near the outer side of the mounting holes 5. The diameter of the annular groove 6 is larger than the diameter of the mounting holes 5, and the two are on the same central axis.

[0026] In this embodiment, due to the use of laser shot peening technology, a full-coverage compressive stress protection layer 3 is formed on the surface of the substrate layer 2. The compressive stress protection layer 3 is formed by laser irradiation of the surface of the substrate layer 2 to generate a plasma explosion effect, thereby causing the metal on the surface of the substrate layer 2 to undergo compressive plastic strain, and removing stress through a series of strain reactions. The compressive stress protection layer 3 can effectively resist stress corrosion because it changes the stress state of the surface, transforming the tensile stress that may have existed into compressive stress.

[0027] In one specific embodiment, after preparing the compressive stress protective layer 3 using the above-mentioned laser shot peening technology, it is like putting a layer of pressure-resistant "armor" on the surface of the metal pot. When there is a corrosive medium in the outside and tensile stress that may be generated by stress corrosion, this "armor" can resist the damage of tensile stress to the metal structure.

[0028] Compared to mechanical shot peening, laser shot peening produces metal pot surfaces with superior properties. The maximum compressive stress on the laser-peened metal surface is significantly higher than that of mechanical shot peening, with the residual compressive stress increasing by approximately 40%-50%. Furthermore, the residual compressive stress thickness of laser shot peening is >1.0 mm, which is 5-10 times that of mechanical shot peening (approximately 0.1-0.2 mm). This means that the compressive stress protective layer formed by laser shot peening is thicker and more effective, providing more durable and robust stress corrosion protection for the metal pot.

[0029] After laser shot peening, an antibacterial and anti-mildew layer 4 is formed by a nano-copper-zinc composite. The antibacterial and anti-mildew layer 4 is located on the food-contacting side of the compressive stress protection layer 3. Working together with the compressive stress protection layer 3, the nano-copper has antibacterial properties, which can inhibit the growth and reproduction of bacteria during the use of cookware.

[0030] In one specific embodiment, for example, during cooking, if food residue remains on the surface of the cookware, the antibacterial and anti-mold layer 4 can prevent bacterial growth and maintain the hygiene of the cookware. The presence of this coating also adds new functional characteristics to the metal cookware, making it not only an ordinary cooking utensil but also possessing healthy antibacterial properties.

[0031] Working principle: Laser shot peening technology is used to irradiate the surface of the metal pot body 1 with a laser, generating a plasma explosion effect. This causes the metal on the surface of the pot body 1 to undergo compressive plastic strain, thereby forming a full-coverage compressive stress protection layer 3 on the surface. The compressive stress protection layer 3 can effectively resist stress corrosion and improve the service life of the cookware. After laser shot peening, a ceramic nano-copper antibacterial coating is formed by nano-copper-zinc composite. The antibacterial and anti-mildew layer 4 is located on the side of the metal pot body 1 that contacts food, which can inhibit the growth and reproduction of bacteria and keep the cookware hygienic.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A metal pot with antibacterial and anti-mildew functions, characterized in that, include The metal pot body (1) is composed of a substrate layer (2), a compressive stress protection layer (3), and an antibacterial and mildew-proof layer (4); A compressive stress protection layer (3) is provided on the outer surface of the substrate layer (2), and an antibacterial and antifungal layer (4) is provided on one side surface of the compressive stress protection layer (3).

2. A metal pot with antibacterial and anti-mildew functions according to claim 1, characterized in that, The substrate layer (2) is made of stainless steel.

3. A metal pot with antibacterial and anti-mildew functions according to claim 1, characterized in that, The compressive stress protective layer (3) is made of stainless steel and is processed by laser shot peening technology.

4. A metal pot with antibacterial and anti-mildew functions according to claim 1, characterized in that, The thickness of the compressive stress protective layer (3) is greater than 1.0 mm.

5. A metal pot with antibacterial and anti-mildew functions according to claim 1, characterized in that, The antibacterial and antifungal layer (4) is a ceramic nano-copper antibacterial coating, and is formed by nano-copper-zinc compounding.

6. A metal pot with antibacterial and anti-mildew functions according to claim 1, characterized in that, The metal pot body (1) has symmetrical mounting holes (5) on both sides of its upper end, and an annular groove (6) is provided on the inner wall of the metal pot body (1) and on the outer side near the mounting holes (5).

7. A metal pot with antibacterial and anti-mildew functions according to claim 6, characterized in that, The diameter of the annular groove (6) is larger than the diameter of the mounting hole (5), and the two are on the same central axis.

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