CN110893065B - Pot body, processing method of pot body and cooking utensil - Google Patents
Pot body, processing method of pot body and cooking utensil Download PDFInfo
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- CN110893065B CN110893065B CN201811063951.8A CN201811063951A CN110893065B CN 110893065 B CN110893065 B CN 110893065B CN 201811063951 A CN201811063951 A CN 201811063951A CN 110893065 B CN110893065 B CN 110893065B
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- base material
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
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- Food Science & Technology (AREA)
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Abstract
The invention discloses a pot body, comprising: a metal matrix comprising an iron layer at the inner wall of the pan body; and the rust-proof 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 utensil comprising the pot body. In addition, the invention also discloses a processing method of the pot body, which comprises the following steps: making a pot blank, wherein an iron layer is arranged on the inner wall of the pot blank; and forming a rust-proof layer on the inner wall of the pot blank, wherein the rust-proof layer is formed by mixing an iron base material and an active metal base material. The pot body of the invention protects the pot body from corrosion by forming cathode protection on the inner surface of the pot body.
Description
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
In order to prevent corrosion of iron products on the market, a nitriding layer and an oxide layer are generally formed on an iron base material through a nitriding oxidation process, wherein the nitriding layer can improve hardness, wear resistance and corrosion resistance of the product, and the oxide layer blackens the surface of the product and enables the product to have corrosion resistance. However, by adopting the nitriding oxidation process, the energy consumption required in the processing process is high, and the heating is generally required to be continuously carried out for 6-8 hours at 570-700 ℃, so that the processing efficiency is low, and the corrosion resistance of the processed product is low. In addition, the nitriding technology cannot be adopted on the composite board, so that the nitriding oxidation process has certain limitations.
Disclosure of Invention
To this end, the present invention provides a pan body that solves or at least alleviates the above-mentioned problems.
According to one aspect of the present invention, there is provided a pot comprising: a metal matrix comprising an iron layer at the inner wall of the pan body; and the rust-proof 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 pot according to the present 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 pot body according to the present invention, the active metal substrate and the iron substrate are both granular.
Alternatively, in the pan body according to the present invention, the ratio of the area of the iron base material to the area of the active metal base material forming the inner surface of the pan body is A, wherein 0.1.ltoreq.A.ltoreq.10.
Optionally, in the pan body according to the present invention, the surface roughness of the rust preventive layer is Ra, wherein Ra is equal to or less than 20um.
According to still another aspect of the present invention, there is provided a cooking appliance including the pot as described above.
According to still another aspect of the present invention, there is provided a method for processing a pot, comprising the steps of:
s1: making a pot blank, wherein an iron layer is arranged on the inner wall of the pot blank; and
s2: and forming a rust-proof layer on the inner wall of the pot blank, wherein the rust-proof layer is formed by mixing an iron base material and an active metal base material.
Optionally, in the method for processing a pot according to the present invention, the step S2 includes:
SA21: simultaneously thermally spraying the iron base material and the active metal base material on the inner wall of the pot blank to form the rust-proof layer on the inner wall of the pot blank; and
SA22: and (3) smoothing the inner surface of the pot body.
Optionally, in the method for processing a pot body according to the present invention, after the step S2, the method further includes the steps of: and spraying, oxidizing, phosphating or nitriding the inner surface of the pot body to form a protective film layer.
Optionally, in the method for processing a pot according to the present 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 performing thermal spraying on the inner wall of the pot blank by using a spray gun.
Optionally, in the method for processing a pot body according to the present invention, the diameters of the iron wire and the active wire are both 1.2mm; 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 of the invention, the pot body comprises a metal matrix, wherein the metal matrix comprises an iron layer positioned on the inner wall of the pot body, and the pot body further comprises a rust-proof layer arranged on the iron layer. Specifically, the antirust layer is formed by mixing an iron base material and an active metal base material with higher metal activity than that of an iron base material, and the inner surface of the pot body is also distributed with the partially mixed and staggered iron base material and the active metal base material, so that the inner surface of the pot body can form cathode protection, the active metal base material at the anode protects the iron base material at the cathode from being corroded, the pot body is further prevented from being corroded, and the service life of the pot body is prolonged.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
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 set forth the various ways in which the principles disclosed herein may be practiced, and all aspects and equivalents thereof are intended to fall within the scope of the claimed subject matter. The above, as well as additional objects, features, and advantages of the present disclosure will become more apparent from the following detailed description when read in conjunction with the accompanying drawings. Like reference numerals generally refer to like parts or elements throughout the present disclosure.
FIG. 1 illustrates a side cross-sectional view of a pan body according to one embodiment of the present invention;
fig. 2 shows a top cross-sectional view of a pan body according to an 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 described above, the pot body in the prior art has more or less certain functional defects, so the invention provides a pot body with more optimized performance. Fig. 1 and 2 show a schematic cross-sectional structure of a pot 100 according to 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. In this case, the metal base 110 is made of a composite plate material, and the composite plate material may be made of iron in the inner layer of the pot body 100. It is understood that the metal base 110 includes a ferrous layer at the inner wall of the pot 100. In addition, the pot body 100 further includes a rust-proof layer formed on the iron layer of the metal base 110 so as to cover the iron layer and be positioned on the inner wall of the pot body 100. It will be appreciated that the surface of the rust preventive layer is the inner surface of the formed pan body 100. The rust-proof 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 a 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 120 and the active metal base 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 shaped iron base 120 and the active metal base 130 are cross-mixed together, and the cross-mixed iron base 120 and active metal base 130 are covered on the surface of the iron layer of the metal base 110 to form a rust-preventing layer on the inner wall of the pot body 100 together, as shown in fig. 1. It will be appreciated that the inner surface of the final pot 100 is also provided with portions of the iron substrate 120 and portions of the active metal substrate 130 alternately, that is, portions of the iron substrate 120 and portions of the active metal substrate 130 alternately form the inner surface of the pot 100, as shown in fig. 2.
With the arrangement, on one hand, the iron base material 120 is only partially exposed on the inner surface of the pan body 100, so that the exposed area is small, and no simple rust exists; on the other hand, since the metal activity of the active metal substrate 130 is higher than that of the iron substrate 120, the iron substrate 120 is at the cathode, and the active metal substrate 130 is at the anode, thereby forming cathodic protection on the inner surface of the pot body 100. According to the cathode protection principle, 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. It can be seen that the corrosion resistance of the pot body 100 can be enhanced by forming the rust-proof 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 higher metal activity than iron, and may be one or more of metal elements such as magnesium, magnesium alloy, aluminum alloy, zinc alloy, and the like.
According to one embodiment, after the surface of the iron layer of the metal base 110 is cleaned and roughened, the iron wire and the active wire are both charged into an arc spraying gun through an arc spraying process, so that the iron wire and the active wire are melted by the arc spraying gun to mix the two metal liquids together, preferably the two metal liquids are uniformly mixed, so that the shaped iron base 120 and the active metal base 130 are cross-mixed to form on the iron layer of the metal base 110 and cover the iron layer to be located on the inner wall of the pot body 100. Thus, the inner surface of the finally formed pot body 100 is also provided with the part of the iron base material 120 and the part of the active metal base material 130 in a staggered manner, so that cathode protection can be formed on the inner surface of the pot body 100, and the active metal layer at the anode can protect the iron base material 120 from being corroded.
The active metal wire is a metal 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 metal 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 appreciated that, in the embodiment of the present invention, since the iron substrate 120 and the active metal substrate 130 are simultaneously sprayed on the surface of the iron layer of the metal base 110 after being mixed together by two metal liquids, the shaped iron substrate 120 and the shaped active metal substrate 130 are mutually fused together to form a rust-proof layer, and the iron substrate 120 and the active metal substrate 130 are both in the form of particles. Thus, the iron matrix 120 is discontinuous in both the bulk and the surface layer, and the active metal matrix 130 is discontinuous in both the bulk and the surface layer, as shown in fig. 1 and 2.
Further, since the iron base material 120 and the active metal base material 130 are mutually fused to form a rust preventing layer, a part of the iron base material 120 and a part of the active metal base material 130 are also alternately distributed on the inner surface of the pot body 100, wherein the area ratio of the iron base material 120 to the active metal base material 130 is A, wherein A is more than or equal to 0.1 and less than or equal to 10 per unit area of the inner surface of the pot body 100. It will be appreciated that the ratio of the areas of the iron substrate 120 and the active metal substrate 130 is also a over the entire inner surface of the pot 100. Here, if a is less than 0.1, the area of the iron base 120 on the inner surface of the pot body 100 is too small to be ignored, so that the rust-preventing layer is almost formed of the active metal base 130, meaning that the non-coated rust-preventing iron pot is not provided, and the area of the active metal base 130 is too large to easily generate self-corrosion. If a is greater than 10, the area of the iron base material 120 per unit area of the inner surface of the pot body 100 is too large, and the area of the active metal base material 130 is relatively small, so that the active metal base material 130 cannot play an obvious cathodic protection role, and thus the iron base material 120 is easily corroded, and thus, the rust-preventing layer cannot play a good corrosion-resistant role.
In addition, the porosity of the rust preventive layer is M, wherein M is less than or equal to 5%. Here, if M is greater than 5%, the corrosion resistance of the rust preventive layer is weak, and the pan body 100 is not significantly protected from corrosion.
The surface roughness of the rust-proof layer is Ra, wherein Ra is less than or equal to 20um. Here, if Ra is greater than 20um, pores of the rust preventive layer are large due to excessive roughness, so that corrosion and even pitting are easy, and a good corrosion resistant effect is not achieved.
According to one embodiment, the thickness of the rust-proof layer is D, wherein D is not less than 5um and not more than 200um, and if D is more than 200um, the rust-proof layer is easy to peel off, so that the pan body 100 is corroded; if D is less than 5um, the rust preventive layer is easily worn away, resulting in a short corrosion-resistant life of the pot body 100.
The present invention also provides a cooking appliance (not shown in the drawings) including the 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 100 in the present invention may be applied to cooking appliances of various structures.
According to still another aspect of the present invention, there is also provided a method for processing a pot 100, the method comprising the steps of:
s1: making a pot blank, wherein the inner wall of the pot blank is provided with an iron layer, and performing surface roughening treatment on the inner wall of the pot blank;
s2: and forming a rust protection layer on the iron layer of the inner wall of the pot blank, wherein the rust protection 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, in step S2, the step of forming a rust preventive layer on the iron layer of the inner wall of the pot base includes:
SA21: simultaneously thermally spraying an iron substrate 120 and an active metal substrate 130 on the surface of the inner wall of the pot body, thereby forming a rust-proof layer on the iron layer of the inner wall of the pot body, so that part of the iron substrate 120 and part of the active metal substrate 130 are mixed and staggered to form the inner surface of the pot body 100; and
SA22: the inner surface of the formed pot body 100 is smoothed, for example, the inner surface of the pot body 100 may be polished, sanded or polished, thereby forming a smooth inner surface of the pot body 100.
Specifically, in step SA21, the step of thermally spraying the iron substrate 120 and the active metal substrate 130 includes:
t1: an electric arc spraying spray gun is filled with an iron wire and an active metal wire, wherein the diameters of the iron wire and the active metal wire are 1.2mm;
t2: and controlling the rotation of the pot blank, and performing thermal spraying on the surface of the inner wall of the pot blank by using an electric arc spraying spray gun. Here, the power switch of the arc spraying gun is turned on, so that the iron wire and the active metal wire are melted, and thus the liquid iron and the liquid active metal are mixed and deposited on the inner wall surface of the pot blank, and together form the rust-preventing 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 base material 120 and part of the active metal base material 130 are also alternately distributed on the inner surface of the pot body 100, as shown in fig. 2, so that cathode protection is formed on the inner surface of the pot body 100, thereby protecting the pot body 100 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, since the iron base material 120 and the active metal base material 130 are formed by spraying the two metal liquids on the surface of the iron base material of the pot blank together after being mixed as uniformly as possible by thermal spraying, and forming the rust-preventing layer after shaping, the iron base material 120 and the active metal base material 130 in the rust-preventing layer are mutually fused, preferably uniformly and alternately distributed on the surface of the iron base material, and thus, the iron base material 120 and the active metal base material 130 are discontinuous in both the whole and the surface layer.
In the embodiment according to the present invention, after the step SA2, that is, after the rust-proof layer is formed on the inner wall of the pot body, the preliminary pot body 100 is formed, and in order to further improve the corrosion resistance of the rust-proof layer, the exposed rust-proof layer may be sprayed, oxidized, phosphated or nitrided, so that a protective film layer is formed on the surface of the rust-proof layer, that is, on the inner surface of the pot body 100. According to the different surface treatment methods, the protective film layer can be a polyether sulfone layer, an oxide film, a phosphating film or a nitride film.
In the description of the present specification, the terms "coupled," "fixed," and the like are to be construed broadly unless otherwise specifically indicated and defined. Furthermore, the terms "upper," "lower," "inner," "outer," "top," "bottom," and the like refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description and simplicity of description, and do not denote or imply that the devices or units referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean 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 present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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. However, it is understood 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 pan (100) comprising:
a metal base (110) comprising an iron layer at the inner wall of the pot (100); and
the rust-proof layer is arranged on the inner wall of the pot body (100), the rust-proof layer is formed by mixing an iron base material (120) and an active metal base material (130), the metal activity of the active metal base material (130) is higher than that of the iron base material (120), and part of the iron base material (120) and part of the active metal base material (130) are staggered to form the inner surface of the pot body (100).
2. The pan (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 (100) of any one of claims 1-2, wherein:
the active metal substrate (130) and the iron substrate (120) are both particulate.
4. The pan (100) of any one of claims 1-2, wherein:
the area ratio of the iron base material (120) to 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;
the surface roughness of the rust-proof layer is Ra, wherein Ra is less than or equal to 20um.
5. A cooking appliance, wherein: comprising a pan (100) according to any one of claims 1 to 4.
6. A method for processing a pot (100) comprises the steps of:
s1: making a pot blank, wherein an iron layer is arranged on the inner wall of the pot blank; and
s2: and forming a rust prevention layer on the inner wall of the pot blank, wherein the rust prevention layer is formed by mixing an iron base material (120) and an active metal base material (130), the metal activity of the active metal base material (130) is higher than that of the iron base material (120), and part of the iron base material (120) and part of the active metal base material (130) are staggered to form the inner surface of the pot body (100).
7. The method for processing the pot (100) according to claim 6, wherein the step S2 comprises:
SA21: simultaneously thermally spraying the iron base material (120) and the active metal base material (130) on the inner wall of the pot blank to form the rust-preventing layer on the inner wall of the pot blank; and
SA22: and (3) smoothing the inner surface of the pot body (110).
8. The method for processing the pot (100) according to claim 6 or 7, further comprising, after said step S2, the step of:
and spraying, oxidizing, phosphating or nitriding the inner surface of the pot body (100) to form a protective film layer.
9. The method of processing a pot (100) according to claim 7, wherein the 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 performing thermal spraying on the inner wall of the pot blank by using a spray gun.
10. The method of processing a pan (100) according to claim 9, wherein:
the diameters of the iron wires and the active metal wires are 1.2mm;
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.
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| CN201811063951.8A CN110893065B (en) | 2018-09-12 | 2018-09-12 | Pot body, processing method of pot body and cooking utensil |
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| CN201811063951.8A CN110893065B (en) | 2018-09-12 | 2018-09-12 | Pot body, processing method of pot body and cooking utensil |
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