Pot body, pot body processing method and cooking utensil

Abstract

The present invention discloses a pot body, including an iron substrate located at the inner wall of the pot body, and the pot body also includes an anti-rust plate located on the surface of the iron substrate; the anti-rust plate includes a steel plate and an active metal plate, the metal activity of the active metal plate is higher than that of the steel plate, the steel plate and the active metal plate can be selectively provided with protrusions and grooves respectively, the protrusions and the grooves are interlocked, and the top surface of the protrusions is exposed in the grooves to be formed on the inner surface of the pot body. The present invention also discloses a cooking utensil including the above-mentioned pot body. In addition, the present invention also discloses a method for processing a pot body, including the steps of: preparing a pot blank, the substrate of the inner wall of the pot blank being an iron substrate; and compositely forming an anti-rust plate on the inner wall of the pot blank. The pot body of the present invention protects the pot body from corrosion by forming cathodic protection.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking utensils, and in particular to a pot body and a method for processing the pot body. Background Art

[0002] In order to prevent corrosion, iron products on the market generally use nitriding oxidation process to form nitride layer and oxide layer on the iron substrate. The nitriding layer can improve the hardness, wear resistance and corrosion resistance of the product, and the oxide layer blackens the surface of the product and makes the product corrosion-resistant. However, the use of this nitriding oxidation process not only requires high energy consumption during the processing, generally requires continuous heating at 570-700℃ for 6-8h, so the processing efficiency is also low, and the corrosion resistance of the processed products is also low. In addition, since nitriding technology cannot be used on composite plates, the nitriding oxidation process also has certain limitations. Summary of the invention

[0003] To this end, the present invention provides a pot body to solve or at least alleviate the above problems.

[0004] According to one aspect of the present invention, a pot body is provided, comprising an iron substrate located at the inner wall of the pot body, and the pot body also comprises an anti-rust plate located on the surface of the iron substrate; the anti-rust plate comprises a steel plate and an active metal plate, the metal activity of the active metal plate is higher than that of the steel plate, the steel plate and the active metal plate can be selectively provided with protrusions and grooves respectively, the protrusions and the grooves are interlocked, and the top surface of the protrusion is exposed from the groove to be formed on the inner surface of the pot body.

[0005] Optionally, in the pot body according to the present invention, the steel plate is covered on the iron substrate, and the active metal plate is arranged on the steel plate; a plurality of protrusions are provided on the surface of the steel plate, and a plurality of grooves are provided on the active metal plate.

[0006] Optionally, in the pot body according to the present invention, the active metal plate is covered on the iron substrate, and the steel plate is arranged on the active metal plate; a plurality of protrusions are provided on the surface of the active metal plate, and a plurality of grooves are provided on the steel plate.

[0007] Optionally, in the pot body according to the present invention, the surface of the iron substrate is configured to have a rough layer with several protrusions, and the rough layer is the steel plate; the active metal plate is arranged on the rough layer, and the active metal plate is provided with several grooves.

[0008] Optionally, in the pot body according to the present invention, the active metal plate is one or more of an aluminum plate, an aluminum alloy plate, a magnesium plate, a magnesium alloy plate, a zinc plate or a zinc alloy plate.

[0009] Optionally, in the pot body according to the present invention, the ratio of the areas of the steel plate and the active metal plate forming the inner surface of the pot body is A, wherein 0.1≤A≤10.

[0010] According to yet another aspect of the present invention, a cooking utensil is provided, comprising the pot body as described above.

[0011] According to another aspect of the present invention, there is provided a method for processing a pot body, comprising the steps of:

[0012] S1: preparing a pot blank, wherein the base material of the inner wall of the pot blank is an iron base material; and

[0013] S2: A rust-proof plate is compositely formed on the inner wall of the pot body, wherein the rust-proof plate comprises a steel plate and an active metal plate, wherein the steel plate and the active metal plate can be selectively provided with protrusions and grooves respectively, wherein the protrusions and the grooves are fitted into each other, and the top surface of the protrusion is exposed from the groove to be formed on the inner surface of the pot body.

[0014] Optionally, in the method for processing a pot body according to the present invention, before step S2, an anti-rust plate is formed, and the step of forming the anti-rust plate includes:

[0015] SA21: A plurality of protrusions are formed on either the steel plate or the active metal plate, and a plurality of grooves are formed on either the steel plate or the active metal plate; and

[0016] SA22: The protrusions and the grooves are aligned and pressed together, and the steel plate and the active metal plate are pressed together as one, with the protrusions exposed outside the grooves.

[0017] Optionally, in the method for processing a pot body according to the present invention, step S2 comprises:

[0018] SB21: forming a rough layer with protrusions or grooves on the iron substrate of the inner wall of the pot blank, wherein the rough layer is the steel plate;

[0019] SB22: forming an active metal plate having grooves or protrusions; and

[0020] SB23: The active metal plate is pressed onto the rough layer by correspondingly engaging the grooves or protrusions of the active metal plate with the protrusions or grooves of the rough layer to form the anti-rust plate.

[0021] Optionally, in the processing method of the pot body according to the present invention, the groove is a blind hole, and after the anti-rust plate is formed, the step of turning the anti-rust plate is further included so that the top surface of the protrusion is exposed in the groove.

[0022] According to the technical solution of the present invention, a pot body and a method for processing the pot body are provided, wherein an anti-rust plate is formed on the surface of the iron substrate of the pot body, the anti-rust plate comprises a steel plate and an active metal plate pressed together, and protrusions and grooves are arranged to fit each other so that the protrusions can be exposed in the grooves and distributed on the inner surface of the pot body. In this way, part of the steel plate and part of the active metal plate are alternately distributed on the inner surface of the pot body, thereby forming cathodic protection, and the active metal plate at the anode can protect the steel plate from corrosion, thereby enhancing the corrosion resistance of the pot body and extending the service life of the pot body.

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To achieve the above and related purposes, certain illustrative aspects are described herein in conjunction with the following description and accompanying drawings, which indicate various ways in which the principles disclosed herein can be practiced, and all aspects and their equivalents are intended to fall within the scope of the claimed subject matter. The above and other purposes, features and advantages of the present disclosure will become more apparent by reading the following detailed description in conjunction with the accompanying drawings. Throughout the present disclosure, the same reference numerals generally refer to the same parts or elements.

[0025] Figure 1 It shows a schematic structural diagram of a pot body according to a first embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the top view of a pot body according to a first embodiment of the present invention is shown;

[0027] Figure 3 It shows a schematic structural diagram of a pot body forming a protective film layer on an iron layer according to a first embodiment of the present invention;

[0028] Figure 4 It shows a schematic structural diagram of a pot body according to a second embodiment of the present invention;

[0029] Figure 5 A schematic diagram of the top view of a pot body according to a second embodiment of the present invention is shown. DETAILED DESCRIPTION

[0030] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0031] As mentioned above, the pot body in the prior art has certain functional defects to a greater or lesser extent, so the present invention proposes a pot body with more optimized performance. Figures 1 to 5 The schematic diagram of the structure of the pot body 100 of the present invention is shown.

[0032] The pot body 100 can be first made of a single-layer steel plate, cast iron or composite plate to form a metal matrix, as long as the inner surface material of the metal matrix is ​​iron, and then the metal matrix is ​​processed to form the final pot body 100. Here, if the metal matrix is ​​made of a composite plate, it is sufficient to ensure that the inner layer of the composite plate relative to the pot body 100 is made of iron. It can be understood that the pot body 100 includes an iron substrate located at the inner side wall of the pot body 100. In addition, as Figure 1 and Figure 2 As shown, the formed pot body 100 also includes an anti-rust plate formed on the surface of the iron substrate, and the anti-rust plate includes a steel plate 110 and an active metal plate 120 pressed together, and the metal activity of the active metal plate 120 is higher than that of the steel plate 110. Specifically, the steel plate 110 and the active metal plate 120 can be selectively provided with protrusions and grooves that can be interlocked with each other, that is, any one of the steel plate 110 and the active metal plate 120 is provided with a protrusion, and the other is provided with a groove that can be interlocked with the protrusion. Thus, by interlocking the protrusions and grooves of the two metal plates, the steel plate 110 and the active metal plate 120 can be tightly pressed together to form an anti-rust plate, which is not easy to delaminate. The anti-rust plate can be compositely formed on the surface of the iron substrate of the inner wall of the pot body 100 through a hot rolling or cold rolling process. It should be noted that the final structure of the above-mentioned groove is a through hole, so that the top surface of the protrusion is exposed in the groove, thereby forming the top surface of the above-mentioned protrusion on the inner surface of the pot body 100. In this way, part of the steel plate 110 and part of the active metal plate 120 can be staggered on the inner surface of the pot body 100.

[0033] Through the above arrangement, on the one hand, since the steel plate 110 is only partially exposed on the inner surface of the pot body 100, the exposed area is small and simple rust will not occur; on the other hand, since the metal activity of the active metal plate 120 is higher than that of the steel plate 110, the steel plate 110 located on the inner surface of the pot body 100 is at the cathode, and the active metal plate 120 is at the anode. According to the cathodic protection principle, the active metal plate 120 at the anode will protect the steel plate 110 at the cathode from being corroded, that is, cathodic protection is formed on the inner surface of the pot body 100, which can enhance the corrosion resistance of the pot body 100.

[0034] Specifically, the active metal plate 120 is a metal plate made of a metal element with a higher metal activity than iron, for example, it can be made of one or more of the following metal elements: magnesium, magnesium alloy, aluminum, aluminum alloy, zinc, zinc alloy, etc. Therefore, the active metal plate 120 can be a magnesium plate, a magnesium alloy plate, an aluminum plate, an aluminum alloy plate, a zinc plate, a zinc alloy plate, etc.

[0035] Furthermore, in the rust-proof plate formed by pressing the steel plate 110 and the active metal plate 120, the metal plate located in the relatively lower layer (i.e., a layer of the iron substrate close to the pot body 100) is provided with a plurality of protrusions, and preferably, the plurality of protrusions are evenly spaced. Correspondingly, the metal plate located in the relatively upper layer (i.e., a layer of the iron substrate away from the pot body 100) is provided with grooves that can be mutually engaged with the above-mentioned protrusions. It should be understood that the protrusions and grooves here are only relative concepts, and the present invention does not limit their specific shapes and structures, as long as it can ensure that the protrusions of the lower layer can be engaged in the grooves of the upper layer and exposed on the inner surface of the pot body 100. Optionally, the shape of the hole can be circular, square or irregular, etc.

[0036] According to the first embodiment, Figure 1 and Figure 2 As shown, in the anti-rust plate, the steel plate 110 is located at the lower layer of the active metal plate 120, and a plurality of protrusions are formed on the steel plate 110, and a plurality of grooves are formed on the active metal plate 120. That is, in the final formed pot body 100, the grooves of the active metal plate 120 and the protrusions of the steel plate 110 are interlocked with each other, so as to be pressed together on the steel plate 110 to form an anti-rust plate, and the bottom layer of the steel plate 110 in the anti-rust plate is compositely formed on the iron substrate of the inner side wall of the pot body 100, so as to form an anti-rust plate on the iron substrate surface of the pot body 100. In this way, by setting the groove as a through-hole structure, the protrusion on the steel plate 110 can be exposed in the groove of the active metal plate 120, so that the protrusion top surface of the steel plate 110 and the top surface of the active metal plate 120 where no groove is set are formed together on the inner surface of the pot body 100, and are mixed and distributed in an interlaced manner, thereby forming cathodic protection on the inner surface of the pot body 100, protecting the steel plate 110 from corrosion, and enhancing the corrosion resistance of the pot body 100.

[0037] According to the second embodiment, Figure 4 and Figure 5 As shown, in the anti-rust plate, the active metal plate 120 is located at the lower layer of the steel plate 110, and a plurality of protrusions are formed on the active metal plate 120, and a plurality of grooves are formed on the steel plate 110. That is, in the finally formed pot body 100, the grooves of the steel plate 110 and the protrusions of the active metal plate 120 are interlocked with each other, so as to be pressed together on the active metal plate 120 to form an anti-rust plate, and the bottom layer of the active metal plate 120 in the anti-rust plate is compositely formed on the iron substrate of the inner side wall of the pot body 100, so as to form an anti-rust plate on the iron substrate surface of the pot body 100. In this way, by setting the groove as a through-hole structure, the protrusion on the active metal plate 120 can be exposed in the groove of the steel plate 110, so that the protrusion top surface of the active metal plate 120 and the top surface of the steel plate 110 where no groove is set are formed together on the inner surface of the pot body 100, and are mixed and distributed in an interlaced manner, thereby forming cathodic protection on the inner surface of the pot body 100, which can also protect the steel plate 110 from corrosion and enhance the corrosion resistance of the pot body 100.

[0038] According to the third embodiment, since the material of the inner side wall of the pot body 100 is an iron substrate, a plurality of protrusions can be processed and formed on the iron substrate of the inner side wall of the pot body 100, thereby forming a rough layer with a plurality of protrusions, and the rough layer is the steel plate 110. By forming a plurality of grooves on the active metal plate 120, the active metal plate 120 can be directly pressed on the rough layer of the iron substrate, so that the grooves of the active metal plate 120 and the protrusions of the rough layer are mutually embedded, so that the active metal plate 120 and the rough layer together form a rust-proof plate on the surface of the iron substrate of the pot body 100. According to a similar principle, by setting the groove of the active metal plate 120 as a through-hole structure, the protrusions of the rough layer are exposed in the groove, and the top surface of the protrusion and the top surface of the active metal plate 120 without the groove are formed on the inner surface of the pot body 100, and are mixed and distributed in an interlaced manner, so that cathodic protection is formed on the inner surface of the pot body 100 to protect the pot body 100 from corrosion.

[0039] Specifically, in the first to third embodiments of the present invention, the grooves on the steel plate 110 or the active metal plate 120 can be formed by stamping and etching. The grooves can be directly formed into a through-hole structure on the plate, or a blind hole can be first formed on the plate, and then the surface of the anti-rust plate is turned after the anti-rust plate is formed, so that the protrusions are exposed in the grooves and exposed on the inner surface of the pot body 100.

[0040] Preferably, part of the steel plates 110 and part of the active metal plates 120 located on the inner surface of the pot body 100 are evenly and alternately distributed.

[0041] It should be noted that in the first to third embodiments of the present invention, although the inner surface of the pot body 100 presents a distribution state in which part of the steel plate 110 and part of the active metal plate 120 are staggered and mixed, since a number of protrusions are evenly and spaced, the surface layer of the steel plate 110 or the active metal plate 120 with protrusions is discontinuous. However, whether the steel plate 110 is provided with protrusions or grooves, the whole is continuous, such as Figure 1 and Figure 5 Whether it is provided with grooves or protrusions of the active metal plate 120, the whole is also a continuous state, such as Figure 2 and Figure 4 shown.

[0042] In the above-mentioned first to third embodiments according to the present invention, see Figure 2 and Figure 5 The cross-sectional area of ​​each groove is S, where 25 um²≤S≤200um². Here, if S is less than 25 um², the area of ​​a single protrusion exposed on the inner surface of the pot body 100 will be too small, resulting in a smaller area occupied by the protrusion per unit area. If the steel plate 110 is provided with protrusions, the area of ​​the steel plate 110 exposed per unit area on the inner surface of the pot body 100 is too small, and the area of ​​the active metal plate 120 is too large, so that the active metal plate 120 is prone to self-corrosion and does not have a good corrosion resistance effect; if the active metal plate 120 is provided with protrusions, the area of ​​the active metal plate 120 exposed per unit area on the inner surface of the pot body 100 is small, so that the active metal plate 120 does not have an obvious cathodic protection effect, resulting in the steel plate 110 being easily corroded, and also not having a good effect of protecting the pot body 100 from corrosion. Based on a similar principle, if S is greater than 200um², since the area of ​​a single protrusion exposed on the inner surface of the pot body 100 is too large, the area occupied by the protrusion per unit area is also large. If a protrusion is provided on the steel plate 110, the area of ​​the steel plate 110 exposed per unit area on the inner surface of the pot body 100 is too large, and the area of ​​the active metal plate 120 is small, so that the active metal plate 120 cannot play an obvious cathodic protection role, causing the steel plate 110 to be easily corroded; if a protrusion is provided on the active metal plate 120, the area of ​​the active metal plate 120 exposed per unit area on the inner surface of the pot body 100 is large, so that the active metal plate 120 is prone to self-corrosion and cannot achieve a good corrosion resistance effect.

[0043] Furthermore, in the above-mentioned first to third embodiments according to the present invention, Figure 2 and Figure 5 As shown, the steel plate 110 exposed on the inner surface of the pot body 100 includes a plurality of iron units. Figure 2 In the embodiment, since the protrusion of the steel plate 110 is exposed in the groove, each iron unit corresponds to the area of ​​each circular groove. Figure 5In the figure, since grooves are provided on the steel plate 110, the steel plate 110 distributed on the inner surface of the pot body 100 is an area without grooves. It can be considered that each iron unit corresponds to the area between the center lines of the four circular grooves (two rows and two columns) (excluding the circular grooves). Wherein, the area of ​​each iron unit is P, then, 0.1mm²≤P≤3mm². Here, if P is less than 0.1 mm², the area of ​​a single iron unit is too small, making the process difficult to implement. If P is greater than 3mm², the area of ​​a single iron unit is too large, and since corrosion starts from the surface first, the steel plate 110 exposed on the inner surface of the pot body 100 is prone to self-corrosion, resulting in poor corrosion resistance of the inner surface of the pot body 100, and failing to achieve good corrosion resistance, resulting in a short service life of the pot body 100.

[0044] In the above-mentioned first to third embodiments according to the present invention, Figure 2 As shown, the ratio of the area of ​​the steel plate 110 and the active metal plate 120 exposed on the inner surface of the pot body 100 per unit area is A, wherein 0.1≤A≤10. It can be understood that the ratio of the area of ​​the steel plate 110 and the active metal plate 120 on the entire inner surface of the pot body 100 is also A. Here, if A is less than 0.1, the area of ​​the steel plate 110 per unit area is too small to be ignored, so that the anti-rust plate is almost formed by the active metal plate 120, and the meaning of an uncoated anti-rust iron pot is not achieved. If A is greater than 10, the area of ​​the steel plate 110 per unit area on the inner surface of the pot body 100 is too large, and the area of ​​the active metal plate 120 is relatively small, resulting in the inability of the active metal plate 120 to play an obvious cathodic protection role, so that the steel plate 110 is easily corroded by itself, resulting in poor corrosion resistance of the inner surface of the pot body 100, and a good corrosion resistance effect cannot be achieved.

[0045] Optionally, in the above embodiment according to the present invention, Figure 3 As shown, after the anti-rust plate is formed on the iron base material of the pot body 100, the surface of the anti-rust plate can also be sprayed, oxidized, phosphated or nitrided to form a protective film layer 115 on the exposed surface of the anti-rust plate, further improving its corrosion resistance, thereby extending the service life of the pot body 100.

[0046] The present invention further provides a cooking utensil (not shown in the figure), which includes the pot body 100 as described above. It should be noted that the present invention is not limited to the specific type and structure of the cooking utensil, and the pot body 100 in the present invention can be applied to cooking utensil of various structures.

[0047] According to another aspect of the present invention, a method for processing a pot body 100 is provided, the method comprising the following steps:

[0048] S1: making a pot blank, wherein the base material of the inner side wall of the pot blank is an iron base material;

[0049] S2: A rust-proof plate is compositely formed on the surface of the iron base material of the inner wall of the pot body, wherein the rust-proof plate includes a steel plate 110 and an active metal plate 120, and the steel plate 110 and the active metal plate 120 are respectively optionally provided with protrusions and grooves, the protrusions and the grooves are interlocked, and the top surface of the protrusion is exposed in the groove to be formed on the inner surface of the pot body 100.

[0050] According to the first embodiment, before the above step S2, an independent anti-rust plate is first formed, that is, the steel plate 110 and the active metal plate 120 are first pressed together to form an anti-rust plate, and then step S2 is performed to composite the anti-rust plate on the inner side wall of the pot blank. Specifically, the steps of forming an independent anti-rust plate include:

[0051] SA21: forming a steel plate 110 having a plurality of protrusions and an active metal plate 120 having a plurality of grooves; here, the protrusions and grooves may be formed by stamping and etching the steel plate 110 and the active metal plate 120;

[0052] SA22: The steel plate 110 and the active metal plate 120 are pressed together by engaging a plurality of protrusions with a plurality of corresponding grooves;

[0053] According to the second embodiment, before the above step S2, an independent anti-rust plate is first formed, and the steps of forming the independent anti-rust plate include:

[0054] SB21: forming an active metal plate 120 having protrusions and a steel plate 110 having grooves;

[0055] SB22: The active metal plate 120 and the steel plate 110 are pressed together by engaging a plurality of protrusions with a plurality of corresponding grooves.

[0056] Specifically, when the steel plate 110 and the active metal plate 120 are pressed together, they are first attached to each other, and then the protrusions of the steel plate 110 and the grooves of the active metal plate 120 are fit together through hot rolling, so that the steel plate 110 and the active metal plate 120 are tightly pressed together and are not easy to delaminate. The hot rolling temperature is 300-500°C, and the reduction is 20%-40%.

[0057] Furthermore, after forming an independent anti-rust plate, the steel plate 110 or active metal plate 120 located at the lower layer (with several protrusions) of the anti-rust plate is compositely formed on the iron substrate of the inner wall of the pot blank through processes such as cold rolling or hot rolling, thereby forming an anti-rust plate on the surface of the iron substrate of the pot body 100.

[0058] In addition, according to the third embodiment of the present invention, an independent anti-rust plate is not formed first, but the active metal plate 120 is directly pressed on the iron substrate of the pot blank, and the iron substrate and the active metal plate 120 together form the anti-rust plate. Specifically, in this embodiment, the above step S2 includes:

[0059] SC21: A rough layer with protrusions is formed on the iron substrate of the inner wall of the pot blank by stamping, etching and other processes, and the rough layer is equivalent to steel plate 110;

[0060] SC22: forming an active metal plate 120 having a groove by stamping, etching or other processes;

[0061] SC23: The grooves of the active metal plate 120 and the protrusions of the rough layer are engaged with each other by hot rolling, so that the active metal plate 120 is pressed onto the rough layer of the iron substrate to form an anti-rust plate on the pot body 100 together.

[0062] It should be noted that in the above embodiment, the groove can be a through hole structure formed directly on the plate, or a blind hole can be formed on the plate first. After the anti-rust plate is formed, the surface of the anti-rust plate is turned so that the raised top surface is exposed in the groove and distributed on the inner surface of the pot body 100.

[0063] Optionally, the active metal plate 120 may be an aluminum plate. In addition, the active metal plate 120 may also be a magnesium plate, a magnesium alloy plate, an aluminum alloy plate, a zinc plate, a zinc alloy plate, etc., which is not limited in the present invention.

[0064] In addition, if Figure 3 As shown, after the anti-rust plate is formed on the iron substrate of the pot body 100, the surface of the anti-rust plate can also be sprayed, oxidized, phosphated or nitrided, so as to form a protective film layer 115 on the surface of the anti-rust plate located on the inner surface of the pot body 100, further improving its corrosion resistance, thereby extending the service life of the pot body 100. According to different surface treatment methods, the protective film layer 115 can be a polyethersulfone layer, an oxide film, a phosphating film or a nitriding film.

[0065] In an embodiment of the present invention, after the above-mentioned step S2, that is, after the anti-rust plate is formed on the surface of the iron base material of the pot body 100, since the surface of the anti-rust plate is relatively rough, the anti-rust layer can be smoothed, for example, the surface of the anti-rust plate is polished, sanded or polished, so that the inner surface of the pot body 100 finally formed is smoother and flatter.

[0066] It can be understood that after the rust-proof plate is formed on the iron substrate of the pot body 100 by the above processing method, part of the steel plate 110 and part of the active metal plate 120 in the rust-proof plate are alternately distributed on the inner surface of the pot body 100. Since the steel plate 110 is at the cathode and the active metal plate 120 is at the anode, cathodic protection is formed on the inner surface of the pot body 100, and the steel plate 110 will not be corroded by the cathodic protection, thereby protecting the pot body 100 from easy corrosion and extending the service life of the pot body 100.

[0067] In the description of this specification, unless otherwise clearly specified and limited, the terms "connected", "fixed", etc. should be understood in a broad sense. In addition, the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, cannot be understood as limiting the present invention.

[0068] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

Claims

1. A pot body (100), comprising an iron substrate located on the inner wall of the pot body (100), characterized in that: The pot body (100) further comprises an anti-rust plate located on the surface of the iron substrate; The anti-rust plate comprises a steel plate (110) and an active metal plate (120), the metal activity of the active metal plate (120) being higher than that of the steel plate (110), the steel plate (110) and the active metal plate (120) being respectively and selectively provided with protrusions or grooves, the protrusions and the grooves being staggered and interlocked with each other, and the top surfaces of the protrusions being exposed in the grooves and formed on the inner surface of the pot body (100), so that part of the steel plate (110) and part of the active metal plate (120) are staggeredly distributed on the inner surface of the pot body (100).

2. The pot body (100) according to claim 1, wherein: The steel plate (110) is covered on the iron substrate, and the active metal plate (120) is arranged on the steel plate (110); The surface of the steel plate (110) is provided with a plurality of protrusions, and the active metal plate (120) is provided with a plurality of grooves.

3. The pot body (100) according to claim 1, wherein: The active metal plate (120) is covered on the iron substrate, and the steel plate (110) is arranged on the active metal plate (120); The surface of the active metal plate (120) is provided with a plurality of protrusions, and the surface of the steel plate (110) is provided with a plurality of grooves.

4. The pot body (100) according to claim 1, wherein: The surface of the iron substrate is configured to have a rough layer having a plurality of protrusions, and the rough layer is the steel plate (110); The active metal plate (120) is arranged on the rough layer, and the active metal plate (120) is provided with a plurality of the grooves.

5. The pot body (100) according to any one of claims 1 to 4, wherein: The active metal plate (120) is one or more of an aluminum plate, an aluminum alloy plate, a magnesium plate, a magnesium alloy plate, a zinc plate or a zinc alloy plate.

6. The pot body (100) according to any one of claims 1 to 4, wherein: The ratio of the areas of the steel plate (110) and the active metal plate (120) forming the inner surface of the pot body (100) is A, wherein 0.1≤A≤10.

7. A cooking appliance, wherein: Comprising a pot body (100) as described in any one of claims 1 to 6.

8. A method for processing a pot body (100), wherein: Includes steps: Step S1: preparing a pot blank, wherein the base material of the inner wall of the pot blank is an iron base material; as well as Step S2: forming an anti-rust plate on the inner wall of the pot body, the anti-rust plate comprising a steel plate (110) and an active metal plate (120), the steel plate (110) and the active metal plate (120) respectively being selectively provided with protrusions or grooves, the protrusions and the grooves being interlaced and interlocked with each other, and the top surface of the protrusion is exposed from the groove to be formed on the inner surface of the pot body (100).

9. The method for processing a pot body (100) according to claim 8, wherein: Before step S2, an anti-rust plate is formed, and the step of forming the anti-rust plate includes: SA21: any one of the steel plate (110) and the active metal plate (120) forms a plurality of protrusions, and any other one of the steel plate (110) and the active metal plate (120) forms a plurality of grooves; and SA22: The protrusion and the groove are aligned and pressed together, and the steel plate (110) and the active metal plate (120) are pressed together as one body, with the protrusion exposed outside the groove.

10. The method for processing a pot body (100) according to claim 8, wherein: The step S2 comprises: SB21: forming a rough layer having protrusions or grooves on the iron substrate of the inner wall of the pot blank, wherein the rough layer is the steel plate (110); SB22: forming an active metal plate (120) having grooves or protrusions; and SB23: The active metal plate (120) is pressed onto the rough layer by correspondingly engaging the grooves or protrusions of the active metal plate (120) with the protrusions or grooves of the rough layer to form the anti-rust plate.

11. The method for processing a pot body (100) according to claim 9 or 10, wherein: The groove is a blind hole. After the anti-rust plate is formed, the method further comprises the following steps: The anti-rust plate is turned so that the top surface of the protrusion is exposed in the groove.

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