CN209733568U - Pot body and cooking utensil - Google Patents

Abstract

The utility model discloses a pot body, which comprises an iron base material positioned on the inner wall of the pot body, and the pot body also comprises an antirust plate positioned on the surface of the iron base material; the rust-proof 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 are respectively provided with a protrusion and a groove which can be selected, the protrusion and the groove are mutually embedded, and the top surface of the protrusion is exposed out of the groove and is formed on the inner surface of the pot body. In addition, the utility model also discloses a cooking utensil including above-mentioned pot body. The pot body of the utility model protects the pot body from being corroded by forming cathode protection.

Description

pot body and cooking utensil

Technical Field

The utility model relates to a cooking utensil technical field especially relates to a pot body.

background

At present, iron products on the market generally form a nitrided layer and an oxidized layer on an iron substrate through a nitriding oxidation process in order to prevent corrosion, wherein the nitrided layer can improve the hardness, wear resistance and corrosion resistance of the products, and the oxidized layer blackens the surface of the products and provides the products with corrosion resistance. However, the adoption of the nitridation oxidation process not only has high energy consumption in the processing process, but also needs continuous heating for 6-8h at the temperature of 570-700 ℃, thereby having low processing efficiency, and the corrosion resistance of the processed product is also lower. In addition, the composite board cannot adopt a nitriding technology, so that the nitriding oxidation process has certain limitation.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a pot body to solve or at least alleviate the problems existing above.

according to one aspect of the utility model, the pot body is provided, which comprises an iron base material positioned on the inner wall of the pot body, and the pot body also comprises an antirust plate positioned on the surface of the iron base material; the rust-proof 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 are respectively provided with a protrusion and a groove which can be selected, the protrusion and the groove are mutually embedded, and the top surface of the protrusion is exposed out of the groove and is formed on the inner surface of the pot body.

optionally, in the pan body according to the present invention, the steel plate is covered on the iron base material, and the active metal plate is disposed on the steel plate; the steel sheet surface is equipped with a plurality of the arch, active metal sheet is equipped with a plurality of the recess.

optionally, in the pot body according to the present invention, the active metal plate covers the iron base material, and the steel plate is disposed on the active metal plate; the surface of the active metal plate is provided with a plurality of bulges, and the steel plate is provided with a plurality of grooves.

optionally, in the pot body according to the present invention, the surface of the iron base material is provided with a plurality of the raised rough layers, and the rough layers are the steel plates; the active metal plate is arranged on the rough layer, and the active metal plate is provided with a plurality of grooves.

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 alloy plate, a zinc plate, or a zinc alloy plate.

Optionally, in the pot body according to the present invention, the cross-sectional area of each groove is S, wherein S is equal to or less than 25um2 and equal to or less than 200um 2.

Optionally, in the pot according to the present invention, the ratio of the area of the steel plate forming the inner surface of the pot to the active metal plate is a, wherein a is 0.1 or more and 10 or less.

Optionally, in the pot body according to the present invention, the inner surface of the pot body is further provided with a protective film layer.

Optionally, in the pot body according to the present invention, the protective film layer is an oxide film, a nitride film or a phosphate film.

According to another aspect of the present invention, there is provided a cooking appliance, comprising the pot body as described above.

according to the technical scheme of the utility model, a pot body is provided, form rust-resistant board through the iron base material surface at the pot body, rust-resistant board is including the steel sheet and the active metal board that the pressfitting is in the same place, and through setting up protruding and recess gomphosis each other, make the arch expose in the recess and distribute at the internal surface of the pot body, and like this, part steel sheet distributes at the internal surface of the pot body with part active metal board is crisscross, thereby form cathodic protection, the active metal board that is in the positive pole can protect the steel sheet not corroded, thereby the corrosion resistance of the reinforcing pot body, the life of the extension pot body.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

To the accomplishment of the foregoing and related ends, certain illustrative aspects are described herein in connection with the following description and the annexed drawings, which are indicative of various ways in which the principles disclosed herein may be practiced, and all aspects and equivalents thereof are intended to be within the scope of the claimed subject matter. The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description read in conjunction with the accompanying drawings. Throughout this disclosure, like reference numerals generally refer to like parts or elements.

Fig. 1 shows a schematic structural view of a pot body according to a first embodiment of the present invention;

Fig. 2 shows a schematic top view of a pan body according to a first embodiment of the present invention;

FIG. 3 is a schematic structural view showing a pot body according to a first embodiment of the present invention forming a protective film layer on an iron layer;

FIG. 4 shows a schematic structural view of a pot body according to a second embodiment of the present invention;

Fig. 5 shows a schematic top view of a pot body according to a second embodiment of the present invention.

Detailed Description

exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It should be noted that all the materials of magnesium, magnesium alloy, aluminum alloy, zinc alloy, etc. involved in the present invention are commonly available materials.

As mentioned above, the pot body in the prior art has a certain functional defect more or less, so the utility model provides a pot body with more optimized performance. Fig. 1 to 5 show a schematic structural view of a pot body 100 of the present invention.

Wherein, the pan body 100 can be made of a single-layer steel plate, cast iron or a composite plate material to form a metal matrix, as long as the inner surface of the metal matrix is made of iron, and then the metal matrix is processed to form the final pan body 100. Here, if the metal substrate is made of the composite plate, it is only necessary to ensure that the inner layer of the composite plate opposite to the pot body 100 is made of iron. It is understood that the pot body 100 includes iron base located at the inner side wall of the pot body 100. In addition, as shown in fig. 1 and 2, the formed pan body 100 further includes a rust-proof plate compositely formed on the surface of the iron base material, the rust-proof plate includes a steel plate 110 and an active metal plate 120 which are 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 are selectively provided with protrusions and recesses, respectively, which can be fitted into each other, that is, either one of the steel plate 110 and the active metal plate 120 is provided with protrusions, and the other is provided with recesses into which the protrusions can be fitted into each other. Therefore, the protrusions and the grooves of the two metal plates are embedded with each other, so that the steel plate 110 and the active metal plate 120 can be tightly pressed together to form the anti-rust plate which is not easy to delaminate, and the anti-rust plate can be compositely formed on the surface of the iron base material on the inner side wall of the pot body 100 through a hot rolling or cold rolling process. It should be noted that the final structure of the groove is a through hole, so that the top surface of the protrusion is exposed out of the groove, and thus the top surface of the protrusion is formed on the inner surface of the pot body 100, and thus, a portion of the steel plates 110 and a portion of the active metal plates 120 can be distributed on the inner surface of the pot body 100 in a staggered manner.

Through the arrangement, on one hand, the steel plate 110 is only partially exposed out of the inner surface of the pot body 100, and the exposed area is small, so that simple rusting cannot occur; on the other hand, because the metal activity of the active metal plate 120 is higher than that of the steel plate 110, the steel plate 110 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 principle of cathodic protection, the active metal plate 120 at the anode can 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, so that the corrosion resistance of the pot body 100 can be enhanced.

specifically, the active metal plate 120 is a metal plate made of a metal element having higher metal activity than iron, and may be made of one or more of the following metal elements: magnesium, magnesium alloys, aluminum alloys, zinc alloys, and the like. Accordingly, the active metal plate 120 may be a magnesium plate, a magnesium alloy plate, an aluminum alloy plate, a zinc alloy plate, or the like.

Further, in the rust-proof plate formed by laminating the steel plate 110 and the active metal plate 120, the metal plate at the opposite lower layer (i.e., the layer close to the iron substrate of the pot body 100) is provided with a plurality of protrusions, and preferably, the plurality of protrusions are uniformly distributed at intervals. Accordingly, the metal plate located at the opposite upper layer (i.e., the layer of the iron base material away from the pan body 100) is provided with a groove capable of being engaged with the protrusion. It should be understood that the protrusions and the grooves are only relative concepts, and the present invention is not limited to the specific shape and structure, as long as the protrusions of the lower layer can be inserted into the grooves of the upper layer and exposed to the inner surface of the pot body 100. Alternatively, the shape of the holes may be circular, square, irregular, or the like.

according to the first embodiment, as shown in fig. 1 and 2, in the rust preventive plate, a steel plate 110 is positioned at a lower layer of an 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 finally formed pot body 100, the groove of the active metal plate 120 and the protrusion of the steel plate 110 are engaged with each other, so as to be pressed on the steel plate 110 to form a rust-proof plate together, and the bottom layer of the steel plate 110 in the rust-proof plate is formed on the iron base material of the inner side wall of the pot body 100 in a compounding manner, so as to form the rust-proof plate on the surface of the iron base material of the pot body 100. Thus, the protrusions on the steel plate 110 can be exposed out of the grooves of the active metal plate 120 by arranging the grooves to be a through hole structure, so that the top surfaces of the protrusions of the steel plate 110 and the top surfaces of the active metal plate 120, which are not provided with the grooves, are formed on the inner surface of the pot body 100 and are mixed and distributed in a staggered manner, thereby forming cathode protection on the inner surface of the pot body 100, protecting the steel plate 110 from being corroded, and enhancing the corrosion resistance of the pot body 100.

According to the second embodiment, as shown in fig. 4 and 5, in the rust preventive plate, the active metal plate 120 is positioned 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 groove of the steel plate 110 and the protrusion of the active metal plate 120 are engaged with each other, so as to be pressed on the active metal plate 120 to form a rust-proof plate together, and the bottom layer of the active metal plate 120 in the rust-proof plate is formed on the iron base material on the inner side wall of the pot body 100 in a composite manner, so as to form the rust-proof plate on the surface of the iron base material of the pot body 100. Thus, the protrusions of the active metal plate 120 are exposed out of the grooves of the steel plate 110 by forming the grooves as through-hole structures, so that the top surfaces of the protrusions of the active metal plate 120 and the top surfaces of the steel plate 110, which are not provided with the grooves, are formed on the inner surface of the pot body 100 and are mixed and distributed in a staggered manner, thereby forming cathode 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.

According to the third embodiment, because the material of the inside wall of the pot body 100 is iron-based material, therefore can process on the iron-based material of the inside wall of the pot body 100 and form a plurality of protrusion, thereby form and have a plurality of protruding rough layer, this rough layer is steel sheet 110 promptly, through forming a plurality of recess on active metal plate 120, thereby, can directly pressfitting active metal plate 120 on the rough layer of iron-based material, make the recess of active metal plate 120 and the protruding gomphosis each other of rough layer, thereby active metal plate 120 and rough layer form the rust-proof plate on the iron-based material surface of the pot body 100 together. According to a similar principle, the groove of the active metal plate 120 is a through hole structure, so that the protrusion of the rough layer is exposed out of the groove, 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 a staggered manner, thereby forming cathode protection on the inner surface of the pot body 100 and protecting the pot body 100 from corrosion.

Specifically, in the first to third embodiments of the present invention, the groove on the steel plate 110 or the active metal plate 120 may be formed by a process such as punching and etching. The groove may be formed directly on the plate to form a through hole structure, or a blind hole may be formed on the plate, and after the antirust plate is formed, the surface layer of the antirust plate is turned, so that the protrusion is exposed to the groove and exposed to the inner surface of the pot body 100.

Preferably, a portion of the steel plate 110 and a portion of the active metal plate 120 located on the inner surface of the pan body 100 are uniformly distributed in a staggered manner.

It should be noted that, in the first to third embodiments of the present invention, although the inner surface of the pot body 100 has a distribution state in which a part of the steel plate 110 and a part of the active metal plate 120 are mixed alternately, since the plurality of protrusions are distributed uniformly and at intervals, the surface layer on which the protruding steel plate 110 or the active metal plate 120 is provided is in a discontinuous state. However, the steel plate 110, whether provided with protrusions or grooves, is entirely continuous, as shown in fig. 1 and 5; the entirety of the active metal layer 130, whether provided with grooves or protrusions, is also in a continuous state, as shown in fig. 2 and 4.

in the first to third embodiments of the present invention, referring to the top views of fig. 2 and 5, the cross-sectional area of each groove is S, wherein S is 25um2 ≦ 200um 2. Here, if S is less than 25um2, the area of a single protrusion exposed on the inner surface of the pot body 100 is too small, which results in a smaller area occupied by the protrusion per unit area, and if the protrusion is provided on the steel plate 110, the area of the steel plate 110 exposed on the inner surface of the pot body 100 per unit area is too small, and the area of the active metal plate 120 is too large, which results in that the active metal plate 120 is easily corroded by itself and does not have a better corrosion resistance effect; if the protrusion is formed on the active metal plate 120, the area of the active metal plate 120 exposed in the unit area of the inner surface of the pot body 100 is smaller, so that the active metal plate 120 does not have an obvious cathodic protection effect, which causes the steel plate 110 to be easily corroded, and also does not have a good effect of protecting the pot body 100 from corrosion. Based on a similar principle, if S is larger than 200um2, the area occupied by the protrusions in unit area is also larger due to the fact that the area of the single protrusion exposed on the inner surface of the pot body 100 is too large, and if the steel plate 110 is provided with the protrusions, the area of the steel plate 110 exposed on the inner surface of the pot body 100 in unit area is too large, the area of the active metal plate 120 is smaller, so that the active metal plate 120 cannot play an obvious cathode protection role, and the steel plate 110 is easily corroded; if the active metal plate 120 is provided with the protrusions, the area of the active metal plate 120 exposed in the unit area of the inner surface of the pot body 100 is large, so that the active metal plate 120 is easily corroded by itself and cannot achieve a good corrosion resistance effect.

In addition, in the above-described first to third embodiments according to the present invention, as shown in fig. 2 and 5, the steel plate 110 exposed to the inner surface of the pot body 100 includes a plurality of iron units. In fig. 2, each iron unit corresponds to the area of each circular groove, since the protrusions of the steel plate 110 are exposed to the grooves. In fig. 5, since the steel plate 110 is provided with the grooves, the steel plate 110 distributed on the inner surface of the pan body 100 is a region where no groove is provided, and it can be considered that each iron unit corresponds to a region (excluding the circular grooves) between the central lines of four circular grooves (two rows and two columns). Wherein, the area of each iron unit is P, then, P is more than or equal to 0.1mm2 and less than or equal to 3mm 2. Here, if P is less than 0.1mm2, the area of the individual 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 corrosion starts from the surface first, so that the steel plate 110 exposed on the inner surface of the pot body 100 is easy to generate self-corrosion, the corrosion resistance of the inner surface of the pot body 100 is poor, and a good corrosion resistance effect cannot be achieved, so that the service life of the pot body 100 is short.

In the first to third embodiments of the present invention, as shown in fig. 2, the ratio of the area of the steel plate 110 exposed to the inner surface of the pot body 100 to the area of the active metal plate 120 per unit area of the inner surface of the pot body 100 is a, wherein a is 0.1 or more and 10 or less. It will be appreciated that the ratio of the areas of the steel plate 110 and the active metal plate 120 is also a over the entire inner surface of the formed pot body 100. Here, if a is less than 0.1, the area of the steel plate 110 per unit area is negligibly small, and thus the rust-preventive plate is almost formed of the active metal plate 120 and does not have the meaning of an uncoated rust-preventive iron pan. If A is larger than 10, the area of the steel plate 110 per unit area of the inner surface of the pot body 100 is too large, and the area of the active metal plate 120 is relatively too small, so that the active metal plate 120 cannot play a significant role in cathodic protection, and thus the steel plate 110 is easily corroded by itself, the corrosion resistance of the inner surface of the pot body 100 is poor, and a good corrosion resistance effect cannot be achieved,

Optionally, in the above embodiments according to the present invention, as shown in fig. 3, after the rust-proof plate is formed on the iron substrate of the pot body 100, the surface of the rust-proof plate may be further subjected to spraying, oxidation, phosphorization or nitridation treatment, so as to form the protective film layer 115 on the exposed surface of the rust-proof plate, further improve the corrosion resistance of the protective film layer, and prolong the service life of the pot body 100.

The utility model also provides a cooking utensil (not shown in the figure), which comprises the pot body 100. 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 of the present invention can be applied to various structures of cooking utensils.

according to another aspect of the present invention, there is also provided a method for processing a pot body 100, the method comprising the steps of:

S1: manufacturing a pot blank, wherein the base material on the inner side wall of the pot blank is an iron base material;

S2: the surface of the iron base material on the inner side wall of the pot blank is compounded to form the antirust plate, wherein the antirust plate comprises a steel plate 110 and an active metal plate 120, the steel plate 110 and the active metal plate 120 are respectively provided with a protrusion and a groove which are respectively and selectively embedded, and the top surface of the protrusion is exposed out of the groove to be formed on the inner surface of the pot body 100.

according to the first embodiment, before the step S2, a separate rust-proof plate is formed, that is, the steel plate 110 and the active metal plate 120 are pressed together to form the rust-proof plate, and then the step S2 is performed to form the rust-proof plate on the inner side wall of the pot blank. Specifically, the step of forming the independent rust inhibitive plate includes:

SA 21: 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 the grooves may be formed by performing processes such as punching and etching on the steel plate 110 and the active metal plate 120;

SA 22: the steel plate 110 and the active metal plate 120 are pressed into a whole by mutually embedding the plurality of protrusions and the corresponding plurality of grooves;

According to the second embodiment, before the step S2, a separate rust preventive sheet is formed, and the step of forming the separate rust preventive sheet includes:

SB 21: forming an active metal plate 120 having protrusions and a steel plate 110 having grooves;

SB 22: the plurality of protrusions and the corresponding plurality of grooves are mutually embedded, so that the active metal plate 120 and the steel plate 110 are pressed into a whole.

Specifically, when the steel plate 110 and the active metal plate 120 are pressed together, the steel plate 110 and the active metal plate 120 are firstly attached, and then the protrusions of the steel plate 110 and the grooves of the active metal plate 120 are mutually embedded by hot rolling, so that the steel plate 110 and the active metal plate 120 are tightly pressed together and are not easy to delaminate, wherein the hot rolling temperature is 300-500 ℃, and the reduction is 20-40%.

Further, after forming the independent rust-proof plate, the steel plate 110 or the active metal plate 120 positioned at the lower layer (provided with a plurality of protrusions) on the rust-proof plate is compositely formed on the iron base material of the inner side wall of the pot blank by a process such as cold rolling or hot rolling, thereby forming the rust-proof plate on the iron base material surface of the pot body 100.

furthermore, according to the third embodiment of the present invention, instead of forming a separate rust-proof plate first, the active metal plate 120 is directly pressed on the iron base material of the pot blank, and the iron base material and the active metal plate 120 form a rust-proof plate together. Specifically, in the present embodiment, the step S2 includes:

SC 21: forming a rough layer with protrusions on the iron base material on the inner side wall of the pot blank through processes of stamping, etching and the like, wherein the rough layer is equivalent to the steel plate 110;

SC 22: forming an active metal plate 120 having a groove by processes of punching, etching, and the like;

SC 23: 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 on the rough layer of the iron base material to form an antirust plate on the pot body 100 together.

It should be noted that, in the above embodiment, the groove may be a through hole structure directly formed on the plate, or a blind hole may be formed on the plate, and after the antirust plate is formed, the surface layer of the antirust plate is turned, so that the top surface of the protrusion is exposed out of the groove and distributed on the inner surface of the pot body 100.

alternatively, the active metal plate 120 may be an aluminum plate. In addition, the active metal plate 120 may be a magnesium plate, a magnesium alloy plate, an aluminum alloy plate, a zinc alloy plate, etc., which is not limited by the present invention.

In addition, as shown in fig. 3, after the rust-proof plate is formed on the iron base material of the pan body 100, the surface of the rust-proof plate can be sprayed, oxidized, phosphated or nitrided, so that a protective film layer 115 is formed on the surface of the rust-proof plate on the inner surface of the pan body 100, the corrosion resistance of the rust-proof plate is further improved, and the service life of the pan body 100 is prolonged. The protective film layer 115 may be a polyether sulfone layer, an oxide film, a phosphate film or a nitride film, respectively, depending on the method of the surface treatment.

in the embodiment of the present invention, after the step S2, that is, after the rust-proof plate is formed on the iron substrate surface of the pot body 100, since the surface of the rust-proof plate is rough, the rust-proof layer can be smoothed, for example, the surface of the rust-proof plate is smoothed by polishing, sanding or polishing, so that the finally formed inner surface of the pot body 100 is smoother and flatter.

It can be understood that, after the anti-rust plate is formed on the iron base material of the pot body 100 by the above processing method, part of the steel plates 110 and part of the active metal plates 120 in the anti-rust plate are distributed on the inner surface of the pot body 100 in a staggered manner. Because the steel plate 110 is positioned at the cathode and the active metal plate 120 is positioned at the anode, cathode protection is formed on the inner surface of the pot body 100, the steel plate 110 cannot be corroded through the cathode protection effect, the pot body 100 is protected from being easily corroded, and the service life of the pot body 100 is prolonged.

In the description of the present specification, the terms "connected", "fixed", and the like are to be construed broadly unless otherwise explicitly specified or limited. Furthermore, the terms "upper", "lower", "inner", "outer", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

in the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Claims (10)

1. A pot body (100) comprises an iron base material positioned on the inner wall of the pot body (100), and is characterized in that:

The pan body (100) also comprises an antirust plate positioned on the surface of the iron base material;

The rust-proof plate comprises a steel plate (110) and an active metal plate (120), the metal activity of the active metal plate (120) is higher than that of the steel plate (110), the steel plate (110) and the active metal plate (120) are respectively provided with a protrusion and a groove which can be selected, the protrusion and the groove are mutually embedded, and the top surface of the protrusion is exposed out of the groove to be formed on the inner surface of the pot body (100).

2. the pan body (100) according to claim 1, wherein:

The steel plate (110) is covered on the iron base material, 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 the bulges, and the active metal plate (120) is provided with a plurality of the grooves.

3. the pan body (100) according to claim 1, wherein:

The active metal plate (120) is covered on the iron base material, 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 the bulges, and the steel plate (110) is provided with a plurality of the grooves.

4. the pan body (100) according to claim 1, wherein:

The surface of the iron base material is provided with a plurality of raised rough layers, and the rough layers are the steel plates (110);

The active metal plate (120) is arranged on the rough layer, and the active metal plate (120) is provided with a plurality of grooves.

5. Pot (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 alloy plate, a zinc plate or a zinc alloy plate.

6. pot (100) according to any one of claims 1 to 4, wherein:

the cross-sectional area of each groove is S, wherein S is not less than 25um2 and not more than 200um 2.

7. pot (100) according to any one of claims 1 to 4, wherein:

the area ratio of the steel plate (110) and the active metal plate (120) forming the inner surface of the pot body (100) is A, wherein A is more than or equal to 0.1 and less than or equal to 10.

8. Pot (100) according to any one of claims 1 to 4, wherein:

The inner surface of the pot body (100) is also provided with a protective film layer.

9. Pot (100) according to claim 8, wherein:

The protective film layer is an oxide film, a nitride film or a phosphating film.

10. A cooking appliance, characterized by: comprising a pan (100) according to any one of claims 1 to 9.