阅读说明：本技术 锅体、锅体的加工方法及烹饪器具 (Pot body, processing method of pot body and cooking utensil ) 是由 张明 金伟平 瞿义生 于 2018-09-12 设计创作，主要内容包括：本发明公开了一种锅体,包括：金属基体,包括位于所述锅体内壁处的铁质层；以及防锈层,设在所述锅体内壁,所述防锈层由铁基材和活性金属基材混合而成,所述活性金属基材的金属活性高于所述铁基材。本发明还公开了一种包括上述锅体的烹饪器具。此外,本发明还公开了一种锅体的加工方法,包括步骤：制成锅坯,所述锅坯内壁具有铁质层；以及在所述锅坯内壁形成防锈层,所述防锈层由铁基材和活性金属基材混合形成。本发明的锅体,通过在锅体的内表面形成阴极保护,从而保护锅体不被腐蚀。(The invention discloses a pot body, which comprises: the metal base comprises an iron layer positioned on the inner wall of the pot body; and the anti-rust layer is arranged on the inner wall of the pot body and is formed by mixing an iron base material and an active metal base material, and the metal activity of the active metal base material is higher than that of the iron base material. The invention also discloses a cooking appliance comprising the pot body. In addition, the invention also discloses a processing method of the pot body, which comprises the following steps: manufacturing a pot blank, wherein the inner wall of the pot blank is provided with an iron layer; and forming an anti-rust layer on the inner wall of the pot blank, wherein the anti-rust layer is formed by mixing an iron substrate and an active metal substrate. According to the pot body, the cathode protection is formed on the inner surface of the pot body, so that the pot body is protected from being corroded.)

1. A pan (100) comprising:

a metal base (110) comprising an iron layer located at the inner wall of the pan body (100); and

the anti-rust layer is arranged on the inner wall of the pot body (100), and is formed by mixing an iron base material (120) and an active metal base material (130), wherein the metal activity of the active metal base material (130) is higher than that of the iron base material (120).

2. The pan body (100) of claim 1, wherein:

the active metal substrate (130) is one or more of an aluminum substrate, an aluminum alloy substrate, a magnesium alloy substrate, a zinc substrate, or a zinc alloy substrate.

3. The pan body (100) of any one of claims 1-2, wherein:

the active metal substrate (130) and the iron substrate (120) are both in particulate form.

4. The pan body (100) of any one of claims 1-2, wherein:

the area ratio of the iron base material (120) and the active metal base material (130) 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;

more preferably, the surface roughness of the antirust layer is Ra, wherein Ra is less than or equal to 20 um.

5. A cooking appliance, wherein: comprising a pan (100) according to any one of claims 1 to 4.

6. A processing method of a pot body (100) comprises the following steps:

s1: manufacturing a pot blank, wherein the inner wall of the pot blank is provided with an iron layer; and

s2: and forming an anti-rust layer on the inner wall of the pot blank, wherein the anti-rust layer is formed by mixing an iron substrate (120) and an active metal substrate (130).

7. The processing method of the pan body (100) as claimed in claim 6, wherein the step S2 comprises:

SA 21: simultaneously thermally spraying the iron substrate (120) and the active metal substrate (130) on the inner wall of the pot blank to form the rust-preventive layer on the inner wall of the pot blank; and

SA 22: and smoothing the inner surface of the pot body (110).

8. The processing method of the pan body (100) as claimed in claim 6 or 7, wherein after the step S2, the method further comprises the steps of:

and carrying out spraying, oxidation, phosphorization or nitridation treatment on the inner surface of the pot body (100) to form a protective film layer.

9. The processing method of pot (100) as claimed in claim 7, wherein said step SA21 comprises:

t1: iron wires and active metal wires are arranged in the spray gun; and

t2: and controlling the pot blank to rotate, and thermally spraying the inner wall of the pot blank by using a spray gun.

10. The processing method of the pan body (100) of claim 9, wherein:

the diameters of the iron wire and the active metal wire are both 1.2 mm;

the height of the electric arc spraying spray gun from the pot blank is 350-400mm, the wire feeding amount is 60-100cm/min, the pressure of compressed air is 0.4Mpa, and the current is 160A.

Technical Field

The invention relates to the technical field of cooking appliances, in particular to a pot body and a processing method of the 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.

Disclosure of Invention

To this end, the present invention provides a pan body to solve or at least alleviate the above existing problems.

According to one aspect of the invention, there is provided a pan body comprising: the metal base comprises an iron layer positioned on the inner wall of the pot body; and the anti-rust layer is arranged on the inner wall of the pot body and is formed by mixing an iron base material and an active metal base material, and the metal activity of the active metal base material is higher than that of the iron base material.

Optionally, in the pan body according to the invention, the active metal substrate is one or more of an aluminum substrate, an aluminum alloy substrate, a magnesium alloy substrate, a zinc substrate or a zinc alloy substrate.

Optionally, in the pan body according to the invention, both the active metal substrate and the iron substrate are in the form of granules.

Optionally, in the pot body according to the invention, the area ratio of the iron substrate forming the inner surface of the pot body to the active metal substrate is A, wherein A is more than or equal to 0.1 and less than or equal to 10.

Optionally, in the pot body according to the invention, the surface roughness of the anti-rust layer is Ra, wherein Ra is less than or equal to 20 um.

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

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

s1: manufacturing a pot blank, wherein the inner wall of the pot blank is provided with an iron layer; and

s2: and forming an anti-rust layer on the inner wall of the pot blank, wherein the anti-rust layer is formed by mixing an iron substrate and an active metal substrate.

Alternatively, in the processing method of the pot body according to the present invention, the step S2 includes:

SA 21: simultaneously thermally spraying the iron substrate and the active metal substrate on the inner wall of the pot blank to form the anti-rust layer on the inner wall of the pot blank; and

SA 22: and smoothing the inner surface of the pot body.

Optionally, in the processing method of the pot body according to the present invention, after the step S2, the method further includes the steps of: and carrying out spraying, oxidation, phosphorization or nitridation treatment on the inner surface of the pot body to form a protective film layer.

Alternatively, in the processing method of a pan body according to the invention, the step SA21 includes:

t1: iron wires and active metal wires are arranged in the spray gun; and

t2: and controlling the pot blank to rotate, and thermally spraying the inner wall of the pot blank by using a spray gun.

Optionally, in the processing method of the pot body, the diameters of the iron wire and the active metal wire are both 1.2 mm; the height of the electric arc spraying spray gun from the pot blank is 350-400mm, the wire feeding amount is 60-100cm/min, the pressure of compressed air is 0.4Mpa, and the current is 160A.

According to the technical scheme, the pot body comprises a metal base body, the metal base body comprises an iron layer located on the inner wall of the pot body, and the pot body further comprises an anti-rust layer arranged on the iron layer. Specifically, the anti-rust layer is formed by mixing an iron base material and an active metal base material with metal activity higher than that of the iron base material, and the iron base material and the active metal base material which are partially mixed and staggered are distributed on the inner surface of the pot body, so that cathode protection can be formed on the inner surface of the pot body, the active metal base material at the anode protects the iron base material at the cathode from being corroded, the pot body is prevented from being corroded, and the service life of the pot body is prolonged.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

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 side cross-sectional view of a pan body according to one embodiment of the invention;

FIG. 2 shows a top cross-sectional view of a pan body according to one embodiment of the 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.

As mentioned above, the prior art pan has more or less certain functional drawbacks, and therefore the present invention proposes a pan with more optimized performance. Fig. 1 and 2 show a schematic cross-sectional structure of a pan body 100 of the present invention.

As shown in fig. 1 and 2, the pot body 100 includes a metal base 110, and the metal base 110 may be made of a single-layer steel plate, cast iron, or a composite plate material, as long as the inner surface of the metal base 110 is made of iron. Here, if the metal base 110 is made of a composite plate, it is only necessary to ensure that the inner layer of the composite plate relative to the pot body 100 is made of iron. It is understood that the metal base 110 includes a ferrous layer at the inner wall of the pan body 100. Further, the pot body 100 further includes a rust preventive layer formed on the iron layer of the metal base 110 so as to cover the iron layer and be located on the inner wall of the pot body 100. It can be understood that the surface of the rust-preventive layer is the inner surface of the formed pan body 100. The rust-preventive layer is formed by mixing an iron base material 120 and an active metal base material 130, and the active metal base material 130 is composed of a metal element having higher metal activity than iron, so that the metal activity of the active metal base material 130 is higher than that of the iron base material 120. Specifically, the iron base material 120 and the active metal base material 130 are formed together by thermal spraying, and the two metals are melted and mixed together as uniformly as possible during the thermal spraying, so that the whole of the shaped iron base material 120 and the whole of the active metal base material 130 are mixed in a cross manner, and the iron base material 120 and the active metal base material 130 which are mixed in a cross manner cover the surface of the iron layer of the metal base 110, and form an anti-rust layer on the inner wall of the pot body 100 together, as shown in fig. 1. It is understood that on the inner surface of the finally formed pan body 100, a part of the iron substrate 120 and a part of the active metal substrate 130 are alternately distributed, that is, a part of the iron substrate 120 and a part of the active metal substrate 130 alternately form the inner surface of the pan body 100, as shown in fig. 2.

Through the arrangement, on one hand, the iron base material 120 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, the metal activity of the active metal substrate 130 is higher than that of the iron substrate 120, so that the iron substrate 120 is at the cathode, and the active metal substrate 130 is at the anode, thereby forming cathode protection on the inner surface of the pot body 100. According to the principle of cathodic protection, the active metal substrate 130 at the anode protects the iron substrate 120 at the cathode from corrosion, thereby protecting the pot body 100 from corrosion. Therefore, the corrosion resistance of the pot body 100 can be enhanced by forming the rust preventive layer, thereby prolonging the service life of the pot body 100.

Specifically, the active metal substrate 130 may be one or more of active metal elements having a metal activity higher than that of iron, and may be one or more of metal elements such as magnesium, magnesium alloy, aluminum alloy, zinc, and zinc alloy.

According to an embodiment, after the surface of the ferrous layer of the metal substrate 110 is cleaned and roughened, the iron wire and the active metal wire are both loaded into the arc spraying torch through the arc spraying process, so that the iron wire and the active metal wire are melted by the arc spraying torch, and the two metal liquids are mixed together, preferably, the two metal liquids are uniformly mixed, so that the shaped iron substrate 120 and the active metal substrate 130 are crossly mixed to form on the ferrous layer of the metal substrate 110 and cover the ferrous layer to be located on the inner wall of the pot body 100. Thus, part of the iron substrate 120 and part of the active metal substrate 130 are also distributed on the inner surface of the finally formed pan body 100 in a staggered manner, so that cathodic protection can be formed on the inner surface of the pan body 100, and the active metal layer at the anode can protect the iron substrate 120 from being corroded.

The active wire is a wire made of a metal element having higher metal activity than iron, and may be, for example, a magnesium wire, a magnesium alloy wire, an aluminum alloy wire, a zinc alloy wire, or the like, as long as the active wire corresponds to the type of the active metal layer 120 to be formed. Alternatively, the active metal wire is an aluminum wire, and thus, the active metal substrate 130 is an aluminum layer formed by thermal spraying of the aluminum wire.

It can be understood that, in the embodiment of the present invention, since the iron substrate 120 and the active metal substrate 130 are mixed together by two metal liquids and then sprayed on the surface of the iron layer of the metal matrix 110, the shaped iron substrate 120 and the active metal substrate 130 are mutually fused to form the rust preventive layer, and the iron substrate 120 and the active metal substrate 130 are both in the form of particles. Accordingly, the iron base material 120 is in a discontinuous state in both the entire surface layer and the active metal base material 130 is in a discontinuous state in both the entire surface layer and the surface layer, as shown in fig. 1 and 2.

Further, because the iron substrate 120 and the active metal substrate 130 are mutually fused and form the anti-rust layer, part of the iron substrate 120 and part of the active metal substrate 130 are also distributed on the inner surface of the pan body 100 in a staggered manner, wherein the area ratio of the iron substrate 120 to the active metal substrate 130 is A in the unit area of the inner surface of the pan body 100, wherein A is more than or equal to 0.1 and less than or equal to 10. It is understood that the area ratio of the iron substrate 120 and the active metal substrate 130 is also a over the entire inner surface of the pot body 100. Here, if a is less than 0.1, the area of the iron base material 120 on the inner surface of the pot body 100 is negligibly small, so that the rust-preventive layer is formed almost by the active metal base material 130, which does not have the meaning of a non-coated rust-preventive iron pot, and the active metal base material 130 is too large in area to easily cause self-corrosion. If a is greater than 10, the area of the iron substrate 120 per unit area of the inner surface of the pot body 100 is too large, and the area of the active metal substrate 130 is relatively too small, so that the active metal substrate 130 cannot play a significant role in cathodic protection, and the iron substrate 120 is also easily corroded, and thus the rust-proof layer cannot play a good role in corrosion resistance.

In addition, the porosity of the antirust layer is M, wherein M is less than or equal to 5 percent. Here, if M is more than 5%, the anticorrosive ability of the anticorrosive coating is weak, and the effect of protecting the pot body 100 from corrosion is not remarkable.

The surface roughness of the antirust layer is Ra, wherein Ra is less than or equal to 20 um. Here, if Ra is greater than 20um, the roughness is too large, which results in large pores in the rust-proof layer, and thus corrosion and pitting are likely to occur, and a good corrosion resistance effect is not obtained.

According to one embodiment, the thickness of the anti-rust layer is D, wherein D is more than or equal to 5um and less than or equal to 200um, and if D is more than 200um, the anti-rust layer is easy to peel off, so that the pot body 100 is corroded; if D is less than 5um, the antirust layer is easily worn away, so that the corrosion resistance service life of the pot body 100 is short.

The present invention also provides a cooking appliance (not shown in the figures) comprising a pot 100 as described above. It should be noted that the present invention is not limited to a specific type and structure of the cooking appliance, and the pot body 100 of the present invention can be applied to various structures of cooking appliances.

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

s1: manufacturing a pot blank, wherein the inner wall of the pot blank is provided with an iron layer, and the surface of the inner wall of the pot blank is roughened;

s2: and forming an anti-rust layer on the iron layer on the inner wall of the pot blank, wherein the anti-rust layer is formed by mixing an iron base material 120 and an active metal base material 130, and the metal activity of the active metal base material 130 is higher than that of the iron base material 120.

According to one embodiment, the step of forming a rust preventive layer on the iron layer of the inner wall of the pot blank in step S2 includes:

SA 21: simultaneously thermally spraying the iron substrate 120 and the active metal substrate 130 on the surface of the inner wall of the pot blank to form an antirust layer on the iron layer of the inner wall of the pot blank, so that a part of the iron substrate 120 and a part of the active metal substrate 130 are mixed and staggered to form the inner surface of the pot body 100; and

SA 22: the formed inner surface of the pan body 100 is smoothed, for example, the inner surface of the pan body 100 may be ground, sanded or polished, so as to form a smooth inner surface of the pan body 100.

Specifically, in step SA21, the step of thermally spraying the iron substrate 120 and the reactive metal substrate 130 includes:

t1: an iron wire and an active metal wire are arranged in an electric arc spraying spray gun, wherein the diameters of the iron wire and the active metal wire are both 1.2 mm;

t2: controlling the pot blank to rotate, and carrying out thermal spraying on the surface of the inner wall of the pot blank by using an electric arc spraying spray gun. Here, a power switch of the arc spraying torch is turned on to melt both the iron wire and the active metal wire, so that the liquid iron and the liquid active metal are mixed and deposited on the inner wall surface of the pot blank, and together form an antirust layer. Wherein the height of the electric arc spraying spray gun from the pot blank is 350-400mm, the wire feeding amount is 60-100cm/min, the pressure of compressed air is 0.4Mpa, and the current is 160A.

Thus, part of the iron substrate 120 and part of the active metal substrate 130 are also distributed on the inner surface of the pot body 100 in a staggered manner, as shown in fig. 2, so that the cathode protection is formed on the inner surface of the pot body 100, and the pot body 100 is protected from corrosion.

The active metal wire may be a magnesium wire, a magnesium alloy wire, an aluminum alloy wire, a zinc alloy wire, or the like. Alternatively, the active metal wire is an aluminum wire, and thus, the active metal substrate 130 is an aluminum layer formed by thermal spraying of the aluminum wire.

It can be understood that, the iron base material 120 and the active metal base material 130 are sprayed on the iron base material surface of the pot blank together by thermal spraying and mixing the two metal liquids as uniformly as possible, and the rust-proof layer is formed after shaping, so that the iron base material 120 and the active metal base material 130 in the rust-proof layer are mutually fused, and are preferably uniformly and alternately distributed on the iron base material surface, and thus, the iron base material 120 and the active metal base material 130 are discontinuous in the whole or on the surface layer.

In the embodiment according to the present invention, after the above step SA2, that is, after the rust preventive layer is formed on the inner wall of the pot blank, the preliminary pot body 100 is formed, and in order to further improve the corrosion resistance of the rust preventive layer, the exposed rust preventive layer may be subjected to spraying, oxidation, phosphorization or nitridation treatment, so as to form a protective film layer on the surface of the rust preventive layer, that is, a protective film layer is formed on the inner surface of the pot body 100. According to different surface treatment methods, the protective film layer can be a polyether sulfone layer, an oxidation film, a phosphating film or a nitriding film.

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 in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or units must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, 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.