CN115161581B

CN115161581B - Pot capable of resisting coating peeling

Info

Publication number: CN115161581B
Application number: CN202210750041.7A
Authority: CN
Inventors: 朱泽春; 李红亮; 徐嘉悦; 潘少卿
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2023-06-06
Anticipated expiration: 2042-06-29
Also published as: CN115161581A

Abstract

The application provides a cooker capable of resisting coating peeling, which comprises a cooker substrate, wherein a melting layer is attached to the surface of the cooker substrate, the melting layer is an alloy composition, the alloy composition is formed by melting metal wires of different materials, the melting layer is provided with a main spraying surface positioned at the center of the cooker, and the thickness of the melting layer on the main spraying surface is 0.2 mm-0.8 mm; the alloy composition comprises, by mass, 5.43% -9.87% of chromium, 4.35% -13.4% of nickel, 0.54% -2.9% of molybdenum, 54.2% -63.71% of titanium, and the balance of iron and unavoidable impurities. The titanium-chromium-nickel alloy formed on the inner surface of the cooker has excellent corrosion resistance and acid resistance, smaller density, higher specific strength and better toughness, and also keeps good wear resistance and high-temperature creep resistance, so that the titanium-chromium-nickel alloy is very suitable for being applied to a non-stick cooker, and the defects that the wear resistance, the corrosion resistance, the acid resistance and the coating are difficult to fall off in the existing non-stick cooker are overcome.

Description

Pot capable of resisting coating peeling

Technical Field

The invention relates to the technical field of cooking appliances, in particular to a cooker capable of resisting coating peeling.

Background

With the rapid development of space science and technology, astronauts can use some kitchen electricity and cooking appliances in space, so that the quality of space life is improved. Because of the specificity of the space environment, the safety and the qualified quality of the kitchen electricity and the cooking utensil are particularly important, and the requirements on the kitchen electricity and the cooking utensil are more strict than those of the kitchen electricity and the cooking utensil in a normal common environment.

The applicant develops a cooking container coating technology for space bin cooking based on space kitchen projects participating in research and development, solves the cooking requirement of astronauts in the space bin, further researches the application of the technology to household cooking products, and particularly carries out intensive research on household high-temperature cooking appliances, so that the cookware resistant to coating stripping is generated, and the use sanitation of users is improved.

In the conventional cooking utensil, a metal layer, such as an unrotten just-melted layer or a titanium metal melted layer, is commonly melted and sprayed on a base material of a pot embryo, so that the wear resistance of the pot and the binding force with a non-sticking layer are improved, the melted and sprayed layer is difficult to uniformly spray on the inner surface of the pot in the melted and sprayed technology in the prior art, the quality of the pot is affected, and a coating is easy to fall off; in addition, although the wear resistance of the cookware is improved in the prior art, the cookware is easy to corrode in the long-term cooking use process, the corrosion resistance of the pot melt-injection layer in the prior art is required to be improved, and each cookware is difficult to consider wear resistance, corrosion resistance and acid resistance.

It is known that the higher the heavy metal content in stainless steel, the stronger the acid resistance and anti-friction performance of the cooking container, and the higher the heavy metal content in the stainless steel, the longer the cooking use, and the more heavy metal content can be ingested by the user, which is not beneficial to the diet safety of the user. The titanium metal has stable property and corrosion resistance, and the surface of the metal titanium is covered with a layer of extremely thin naturally generated oxide film titanium and oxide (TiO 2). The film can also be called as 'titanium rust', but unlike iron rust, the compact oxide film does not react with nitric acid, dilute sulfuric acid, dilute hydrochloric acid and aqua regia which is the king of acid at normal temperature, has quite stable properties under most natural conditions, and has good corrosion resistance. However, titanium metal has a low heat-resistant temperature, titanium reacts with oxygen strongly when heated above 650 ℃ and reacts with nitrogen also when heated above 700 ℃, and domestic cooking, such as natural gas, has a flame temperature as high as 600-800 ℃, so that in a cooking vessel, although the corrosion resistance is good, the peeling resistance as a coating is poor due to poor high-temperature creep resistance.

Disclosure of Invention

The invention aims to provide a cooker capable of resisting coating peeling, which is used for at least solving one of the technical problems described in the background art.

In order to achieve the above-mentioned object,

the invention also provides a pot capable of resisting coating peeling, wherein a melting layer is attached to the surface of a pot substrate, the melting layer is an alloy composition, the alloy composition is formed by melting metal wires of different materials, the melting layer is provided with a main spraying surface positioned at the center of the pot, and the thickness of the melting layer on the main spraying surface is 0.2 mm-0.8 mm; the alloy composition comprises, by mass, 5.43% -9.87% of chromium, 4.35% -13.4% of nickel, 0.54% -2.9% of molybdenum, 54.2% -63.71% of titanium, and the balance of iron and unavoidable impurities. In the invention, the mass percent content of titanium can be 54.20%, 54.60%, 55.00%, 55.50%, 55.83%, 55.90%, 56.00%, 56.15%, 56.25%, 56.70%, 57.00%, 57.50%, 57.68%, 58.00%, 59.00%, 60.00%, 61.00%, 62.00%, 63.13%, 63.54%, 63.71%; the mass ratio content of chromium may be 5.43%, 5.70%, 5.93%, 6%, 6.43%, 6.52%, 6.75%, 6.88%, 6.93%, 7%, 7.43%, 7.70%, 7.93%, 8%, 8.43%, 8.7%, 8.75%, 8.93%, 9%, 9.06%, 9.43%, 9.65%, 9.87%; the nickel content may have a mass ratio of 4.35%, 4.5%, 5%, 5.5%, 5.8%, 6%, 6.5%, 6.52%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.14%, 10.5%, 10.87%, 11%, 11.5%, 12%, 12.5%, 13%, 13.4%; the mass ratio content of molybdenum may be 0.54%, 0.75%, 1%, 1.09%, 1.25%, 1.45%1.5%, 1.75%, 2%, 2.25%, 2.5%, 2.54%, 2.75%, 2.9%.

The melting layer has the main face of spouting that is located the pan center in this application, and the pan center is more than cooking vessel such as pan wall or other internal surfaces such as pan, with slice or edible material, oil, vinegar etc. contact, so the setting of main face of spouting further strengthens the wear-resisting acid-resisting and corrosion resisting property at pan center.

The alloy composition is used as the meltallizing layer of the cooking container, and the alloy composition contains titanium metal with a selected mass ratio, so that the meltallizing layer formed by the alloy composition has the stability of metallic titanium, titanium oxide film and oxide (TiO 2) are formed on the surface of the metallic titanium, and the alloy composition does not react with nitric acid, dilute sulfuric acid, dilute hydrochloric acid and aqua regia at normal temperature, and has the characteristics of excellent acid resistance and corrosion resistance.

Meanwhile, compared with pure titanium, the alloy composition of the application also contains other elements, and chromium and carbon in the alloy composition of the application generate hard phases Cr7C3 and Cr23C7 with high hardness, are dispersed and distributed in a solid solution reinforced melt-injection layer, play a role in precipitation hardening, and improve the wear resistance of the surface of a pot substrate. However, the grain boundary precipitation of chromium carbide is a main cause of the decrease in corrosion resistance, and the alloy composition obtained by blending the carbon content, the chromium content, and other elements of the present application has high strength and good corrosion resistance, and can effectively improve the wear resistance and scratch resistance of the molten layer. In addition, chromium is a ferrite generator, and although the increase of chromium content can improve the corrosion resistance of the fused-cast layer, the stability of the austenite structure is not facilitated, and the combination of the chromium content with other metal elements and the content thereof can obtain the fused-cast layer with strong corrosion resistance and stable austenite structure.

Nickel is an austenite forming element, the nickel content can keep the alloy composition to keep an austenite structure at low temperature, the hardness and tensile strength of stainless steel are reduced by increasing the nickel content, but the nickel content can keep high strength and high wear resistance when being matched with the alloy composition, and the corrosion rate of a molten layer in an active state is low due to the nickel content in the alloy composition.

In this application, molybdenum can improve corrosion resistance of stainless steel, which can strengthen the matrix of stainless steel and improve high temperature strength and creep performance of stainless steel.

In addition, the alloy composition forms a molten layer by the process of melting, and oxidation of the metal during the melting is unavoidable to form metal oxides, so that the molten layer contains trace amounts of metal oxides, for example, chromium and chromium oxides, nickel and nickel oxides, molybdenum and molybdenum oxides, iron and iron oxides in the alloy. The crystal grains of part of metal oxides are coarse, the strength is high, the existence of trace metal oxides improves the strength of the fused layer, and the fused layer is not easy to scratch and abrade due to the improvement of the strength. As for the content of the metal oxide, the content of the metal oxide obtained by controlling the content of the metal oxide without intentionally doping oxygen is controlled, and the amount of the oxide inevitably generated by the meltallizing process can meet the requirement.

According to the method, on the basis of titanium metal, the other elements are added, the material hardness of the meltallizing layer is effectively improved, the meltallizing layer needs to withstand the high temperature of flame in the cooking process and is subjected to the cooking processes such as stir-frying, boiling, stewing and steaming for a long time, in the cooking process, the metal material of the meltallizing layer has the technical effects of effectively resisting the shaping deformation under the long-term actions of constant temperature and constant load, avoiding the high-temperature creep deformation of the material, effectively improving the high-temperature compression creep deformation and the high-temperature tensile creep deformation of the material, and being not easy to break, foam or peel off even if being used for a long time.

Optionally, the alloy composition comprises 6.52% -9.06% chromium, 5.8% -10.87% nickel, 1.09% -2.54% molybdenum and 54.2% -63.54% titanium, and the balance is iron and unavoidable impurities.

Optionally, the alloy composition comprises 6.88% -8.7% chromium, 6.52% -10.14% nickel, 1.45% -2.54% molybdenum and 56.25% -63.54% titanium, and the balance is iron and unavoidable impurities.

Optionally, the alloy composition further comprises 0.02% -1.09% copper by mass%.

In the present invention, the mass ratio content of copper may be 0.02%, 0.15%, 0.2%, 0.22%, 0.25%, 0.3%, 0.35%, 0.4%, 0.45%, 0.55%, 0.6%, 0.65%, 0.7%, 0.72%, 0.75%, 0.8%, 0.85%, 0.9%, 0.95%, 1%, 1.09%.

Optionally, the alloy composition includes 0.22% -0.72% copper by mass%. The chromium-nickel-molybdenum content in the alloy composition can be passivated even in a reducing environment such as sulfuric acid and formic acid by being matched with copper elements, so that the corrosion resistance of the alloy composition in acetic acid is improved. The alloy composition has strong acid resistance by combining the chromium content and the nickel content in the alloy composition with copper, and particularly has high-strength resistance to chloride clearance corrosion and stress corrosion cracking, is not easy to generate corrosion spots and cracks, and has strong pitting resistance.

Optionally, the alloy composition further comprises 0.64% -5.74% aluminum and 1.28% -3.83% vanadium in mass%. The aluminum is added on the basis of titanium, so that the alpha phase of titanium metal can be stabilized, and the aluminum-aluminum alloy has obvious effects of improving the normal temperature and high temperature strength of a fused layer, reducing the specific gravity and increasing the elastic modulus; meanwhile, a certain amount of vanadium is added, so that the performances of wear resistance, strength, hardness, ductility and the like of the fused layer can be further improved. In the invention, the mass ratio content of aluminum can be 0.64%, 1.28%, 1.91%, 2.23%, 2.55%, 2.87%, 3.19%, 3.51%, 3.83%, 4.30%, 4.46%, 5%, 5.5%,; the mass ratio content of vanadium may be 0%, 2.00%, 2.23%, 2.55%, 2.87%, 3.00%, 3.19%.

Optionally, the alloy composition further comprises 3.51% -4.3% aluminum and 2.23% -2.87% vanadium in mass%.

Optionally, the pan substrate is selected from at least one of iron, iron alloy, aluminum alloy, copper and copper alloy materials; the raw materials for the smelting are selected from at least two of iron alloy, stainless steel, titanium alloy and titanium metal.

Preferably, the pot base body is made of aluminum-silicon-magnesium alloy, and the smelting raw materials are stainless steel and titanium metal.

Optionally, the pan base body is provided with a bottom wall and a side wall, and the thickness of the bottom wall is 2.5mm-6mm; the main spraying surface completely covers the surface of the bottom wall, and the thickness ratio of the bottom wall to the thickness of the main spraying surface melt-spraying layer is 3.2-30.

The thickness of the melt-shot layer is too small, so that the wear resistance and corrosion resistance of the pot body are reduced, and the pot body is too heavy, wherein the thickness of the melt-shot layer can be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm and 0.8mm; the bottom wall may have a thickness of 2.5mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, 3.5 mm, 3.6 mm, 3.7 mm, 3.8 mm, 3.9 mm, 4.0 mm, 4.1 mm, 4.2 mm, 4.4 mm, 4.6 mm, 4.8 mm, 5.0 mm, 5.2 mm, 5.4 mm, 5.5 mm, 6mm; the ratio of the bottom wall thickness to the primary spray face melt-blown layer thickness may be 3.2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30.

Further, the main spraying surface completely covers the bottom wall surface, in the application, the thickness of the bottom wall is preferably 5mm, the thickness of the melt-spraying layer on the main spraying surface is preferably 0.5mm, the thickness ratio of the bottom wall to the melt-spraying layer on the main spraying surface is 10, and at the moment, the pot has the characteristics of wear resistance, corrosion resistance and the like, and light weight and convenient use.

Further, the thickness of the side wall of the cooker is 1 mm-2.5 mm, and the contact friction between the side wall and the turner is far smaller than that of the bottom wall, so that the overall weight of the cooker can be reduced, and the production cost of the cooker is reduced. The lateral wall thickness of pan in this application is 1.6mm, compromise pan quality and use convenience.

Optionally, the meltallizing layer is at least attached to the inner surface of the pan base body, the inner surface of the pan base body forms an attaching surface combined with the meltallizing layer, and the surface of the meltallizing layer is a cooking surface.

Optionally, the meltallizing layer is at least attached to the inner surface of the pan base body, at least one non-adhesive layer is attached to the surface of the meltallizing layer, and the surface of the non-adhesive layer is a cooking surface.

Optionally, zinc oxide is mixed in the non-stick layer forming the cooking surface, and the mass percentage of the zinc oxide is 0.5-2%. The mass percentage of zinc oxide may be specifically 0.5%, 0.7%, 0.9%, 1.0%, 1.2%, 1.4%, 1.5%, 1.6%, 1.8%, 2.0%.

Optionally, the non-stick coating comprises a primer layer and a top coating layer disposed on the primer layer, and the zinc oxide is distributed on the top coating layer.

In the technical scheme, zinc oxide is mixed in the surface coating, and zinc ions are released by the zinc oxide to destroy and kill bacterial cells, so that the effects of sterilization and antibiosis are achieved. The mass percentage of zinc oxide in the surface coating is 0.5-2%, and the antibacterial and non-sticking effects are achieved.

Optionally, the surface roughness of the fused layer formed by fusing and injecting the metal wires with different materials is smaller than that of the fused layer formed by fusing and injecting the metal wires with single stainless steel, and the surface roughness of the fused layer formed by fusing and injecting the metal wires with different materials is Ra 5-20 μm.

In the technical scheme, the meltallizing layer has certain surface roughness, so that the non-adhesive layer arranged on the meltallizing layer and the meltallizing layer have good adhesion performance, the meltallizing layer and the non-adhesive layer are meshed together in a staggered mode, on the other hand, the surface roughness of the meltallizing layer influences the surface roughness of the inner surface of the pot, and in order to prevent the surface roughness of the inner surface of the pot from being too large to influence cooking or residual bacteria, the surface roughness of the meltallizing layer is not too large. The fusion-jet layer formed of the specific components thereof in the present application has a preferable bonding property with the non-adhesive layer, and has a surface roughness of Ra5 to 20. Mu.m. Specifically, the surface roughness values of the melt-blown layer in the present application may be Ra5 μm, ra6 μm, ra7 μm, ra8 μm, ra9 μm, ra10 μm, ra11 μm, ra12 μm, ra13 μm, ra14 μm, ra15 μm, ra16 μm, ra17 μm, ra18 μm, ra19 μm, ra20 μm.

Optionally, the surface hardness of the penetration layer is HRC 45-HRC 65. The surface hardness can withstand the abrasion of a slice or shell food materials, the porosity of the meltallizing layer is less than 5%, the transmission of corrosive medium to the interface between the meltallizing layer and a pot blank substrate through pores is effectively reduced, the peeling phenomenon of the meltallizing layer caused by oxidation is reduced, and therefore the corrosion resistance is better.

The invention also provides a manufacturing method of the cooking container, which comprises the following steps:

shaping a cooking container substrate into a container base having an opening; sand blasting and coarsening the inner surface of the cooking container matrix; providing a meltallizing raw material of metal wires of different materials; different metal wires are fed into the conductive channel through the wire feeding roller, a spraying outlet of a spraying gun used for spraying is opposite to an opening of the container base body, the spraying outlet swings towards the edge of the cooking container by taking the central axis of the cooking container as a base point, the cooking container rotates around the central axis of the cooking container, and the spraying raw materials of the metal wires made of different materials are coated on the inner surface of the cooking container base body in a multilayer thermal spraying mode to form a spraying layer.

Preferably, the wire diameters of the melted raw materials of the metal wires with different materials are the same, and the melted raw materials of the metal wires with different materials enter the conductive channel at the same wire feeding speed; or the wire diameters of the melt-shot raw materials of the metal wires with different materials are the same, and the melt-shot raw materials of the metal wires with different materials enter the conductive channel at a set wire feeding speed ratio.

Further, the container substrate is selected from at least one of iron, iron alloy, aluminum alloy, copper and copper alloy materials; the smelting raw materials are selected from at least two of iron alloy, stainless steel, titanium alloy and titanium metal; preferably, the container base body is made of aluminum-silicon-magnesium alloy, one of the raw materials for the smelting is stainless steel, and the other raw material for the smelting is titanium alloy or titanium metal.

Preferably, the titanium alloy or titanium metal is melted and shot as the first metal wire, the stainless steel is melted and shot as the second metal wire, and the weight ratio of the first metal wire to the second metal wire in the wire feeding in unit time is 1-2.5:1; preferably, the weight ratio of the first metal wire to the second metal wire in the unit time is 1.5-2.0:1.

Optionally, arc spraying is adopted to spray the melted raw material on the inner surface of the cooking container, the melted raw material is a linear alloy wire, the melted temperature of the melted raw material is 2800-4350 ℃, a spraying outlet of a spray gun used for the melted raw material swings towards the edge of the cooking container by taking the central axis of the cooking container as a base point, the cooking container rotates around the central axis of the cooking container, and the melted raw material of the alloy composition is formed by covering the inner surface of the container base body through multilayer thermal spraying.

Optionally, the melting temperature of the melting is 4000 ℃, and the melting temperature of 4000 ℃ ensures that the wire material is melted instantly on one hand, accelerates the melting work efficiency, and avoids the defect that the wire material is not firmly combined with the base material of the pot embryo due to early solidification; on the other hand, the hard alloy compound of titanium-chromium-nickel is generated at the meltallizing temperature of 4000 ℃, so that the hardness of the meltallizing layer is improved.

Optionally, the arc-spraying layer is formed by arc-spraying a titanium wire and a stainless steel wire, and the arc-spraying comprises the following steps:

s1, pretreatment of the surface of a container matrix: oil removal treatment and surface roughening treatment are respectively carried out on the surface of the container matrix;

s2, feeding wires by rollers and powering: the titanium wire and the stainless steel wire are respectively fed into the two conductive channels at a constant speed through a wire feeding roller, and are respectively endowed with positive and negative opposite electrical properties;

s3, fusing wires: the titanium wire and the stainless steel wire are mutually close under the guidance of the conductive channel until the titanium wire and the stainless steel wire extend out of the outlet of the conductive channel and generate an arc heat source at a preset position to be fused, so as to obtain a fusion mixture;

s4, forming a meltallizing layer: the molten mixture is atomized by compressed air to form fine droplets of metal and sprayed onto the inner surface of the container base by means of an air stream and the molten layer is formed.

In the technical scheme, the preset position is the vertical distance D between the initial position of the metal fine drop and the inner surface of the pot embryo, and D is 70-180 mm.

The invention also provides a coating test method of the cooking container, the cooking container is provided with a container base body, a meltallizing layer is attached to at least the inner surface of the container base body, and the meltallizing layer is an alloy composition; attaching a non-adhesive layer on the inner surface of the meltallizing layer, wherein the non-adhesive layer is an organic polymer, and can be particularly fluorine resin; the coating test method of the cooking container comprises the following steps: performing a material bonding test on the container substrate to which the meltallizing layer is attached; performing an acid resistance test on the container substrate to which the meltallizing layer is attached; performing wear resistance test on the container matrix attached with the penetration layer; and carrying out corrosion resistance test on the container matrix attached with the non-adhesive layer.

Optionally, performing a material bonding test on the container substrate to which the melt-blown layer is attached, comprising: the melt-spraying layer is formed by coating the inner surface of the container base body by using multi-layer thermal spraying of melt-spraying raw materials of the alloy composition, and the thickness of the melt-spraying layer is 0.2-0.8 mm; and cutting the cooking container into a sample with a set area, observing the section structure and the tissue of the sample by using a metallographic microscope, and judging whether the tissue combination between the meltallizing layer and the container matrix is positive or not.

Optionally, after the cooking container is cut into samples with set areas, the samples are mechanically ground, polished and corroded, and then the section structure and the tissues of the samples are observed by a metallographic microscope.

The samples with the above set areas were: the pot embryo sprayed with the melt-blown layer was cut out in the transverse direction to obtain 15mm by 25mm specimens.

Optionally, said determining whether tissue bonding between said melt-blown layer and said container base is normal comprises observing whether the tissue of said melt-blown layer is uniform, and structural compactness; observing whether the porosity of the melt-blown layer is uniform or not and whether the porosity distribution is consistent or not; observing whether the penetration layer is tight with the container matrix or not and has no cracking.

Optionally, performing an acid resistance test on the container substrate to which the melt-blown layer is attached, comprising: and filling acetic acid solution into the cooking container, wherein the filling amount is 1/3-2/3 of the volume of the cooking container, closing a heating source after boiling, standing, and observing whether the inner surface of the cooking container changes color.

Further, acetic acid solution with the volume content of 4.5% -5.5% is filled into the cooking container, the filling amount is 1/3-2/3 of the volume of the cooking container, the heating source is turned off after boiling, the cooking container stands for 12 hours or more, and whether the inner surface of the cooking container changes color is observed.

The acetic acid solution in the present application may have a volume content of 4.5%, 4.6%, 4.7%, 4.8%, 4.9%, 5.0%, 5.1%, 5.2%, 5.3%, 5.4%, 5.5% by volume, indicating that the cooking vessel is not acceptable in corrosion resistance if a visually observable color change occurs on the inner surface of the cooking vessel.

Optionally, performing a wear test on the container substrate to which the melt-blown layer is attached, comprising: and applying an acting force of 1.3-1.7 kg to the steel wire ball by using a mechanical arm, circularly rubbing the inner surface of the cooking container by using the steel wire ball under the acting force, putting eggs into the position where the steel wire ball rubs against the cooking container for cooking, and observing whether a pot sticking phenomenon occurs.

Further, the steel wire balls circularly rub the inner surface of the cooking container back and forth, the steel wire balls are replaced once every 1 ten thousand times of circulation, and the total circulation is 5 ten thousand times; the frequency of the steel wire ball rubbing the inner surface of the cooking container back and forth circularly is 55-65 times/min, and the back and forth circulation movement distance is 95-105 mm.

In the application, the frequency of the wire ball which is adopted to circularly rub the inner surface of the cooking container back and forth is 60 times/min, and the back and forth circulation movement distance is 100mm. And placing eggs in the positions where the steel wire balls rub against the cooking container for cooking, and if the phenomenon of sticking to the cooking container occurs, indicating that the abrasion resistance of the cooking container is unqualified.

Optionally, performing a corrosion resistance test on the container substrate to which the non-stick layer is attached, comprising: and filling the brine into the cooking container, boiling, keeping a micro-boiling state, closing a heating source, standing, and observing whether the inner surface of the cooking container has swelling change.

Further, the corrosion resistance test includes: and filling 4.5-5.5% of salt water into the cooking container, keeping a micro-boiling state for 6.5-7.5 hours after boiling, closing a heating source, standing for 16 hours or more, and observing whether the inner surface of the cooking container has swelling change.

Compared with the prior art, the invention has the beneficial effects that:

1. the titanium-chromium-nickel alloy formed on the inner surface of the pot has excellent corrosion resistance and acid resistance, smaller density, higher specific strength and better toughness, keeps good wear resistance and high-temperature creep resistance, and is very suitable for being applied to non-stick cookers, so as to solve the defects that the wear resistance, the corrosion resistance, the acid resistance and the coating are difficult to fall off in the existing non-stick cookers; the surface hardness of the formed meltallizing layer is HRC 45-HRC 65, the meltallizing layer can withstand abrasion of a slice or shell food materials, the porosity of the meltallizing layer is less than 5%, the transmission of corrosive medium to the interface between the meltallizing layer and a pot blank substrate through pores is effectively reduced, the occurrence of peeling phenomenon of the meltallizing layer caused by oxidization is reduced, and therefore the meltallizing layer has better corrosion resistance and the probability of coating peeling is reduced.

2. According to the manufacturing method of the cooking container, the central axis of the cooking container is taken as a base point through the spraying outlet to swing towards the edge of the cooking container, and the cooking container rotates around the central axis of the cooking container, so that the meltallizing layer is uniformly sprayed on the inner surface of the cooking container, the quality of the meltallizing layer is improved, the coating of the cooking surface in the pot is more uniform, and meanwhile, the bonding firmness of the non-adhesive layer and the meltallizing layer is improved.

3. The thickness of the meltallizing layer is 0.2 mm-0.8 mm, the thickness of the meltallizing layer is too small, the coating performance is reduced, the pot body is too heavy, and the meltallizing thickness of 0.2 mm-0.8 mm gives consideration to the coating performance and the weight reduction of the pot body.

4. The alloy composition of the melt-shot layer has the titanium content of 54.2% -63.71%, titanium has the characteristics of small density, high mechanical strength and easiness in processing, is used for a lightweight cooker of a cooking appliance, forms an alloy with metals such as chromium, nickel and the like, has excellent heat resistance, can be used for a long time at high temperature, and is suitable for a continuously heated cooking container.

5. The alloy composition of the melt-shot layer contains 5.43% -9.87% of chromium, the chromium has the characteristics of high hardness and corrosion resistance, but the acid resistance is poor, the alloy composition is combined with titanium, the chromium content is kept at the mass ratio of 5.43% -9.87%, the wear resistance and corrosion resistance are maintained, the acid resistance is improved, and the use quality of a cooking container is improved.

6. The alloy composition of the smelting-spraying layer contains 4.35% -13.4% of nickel, the nickel has better corrosion resistance, the nickel-containing alloy composition greatly improves the rust resistance of a cooking container, the increase of the nickel content can reduce the hardness and tensile strength of stainless steel, but the nickel content of the smelting-spraying layer is kept at 4.35% -13.4% by mass, and the smelting-spraying layer has the characteristics of wear resistance, acid resistance and corrosion resistance with the alloy composition formed by titanium, chromium and the like.

7. The alloy composition of the melt-shot layer contains 0.54% -2.9% of molybdenum, the molybdenum has the characteristics of small expansion coefficient and good heat conduction performance, and the addition of the molybdenum improves the strength, particularly the high-temperature strength and toughness of the alloy composition; improving the corrosion resistance of the alloy composition in an acid-base solution; the wear resistance of the alloy composition is improved and the hardenability, weldability and heat resistance are improved.

8. The alloy composition of the meltallizing layer also contains aluminum, vanadium and a small amount of copper elements, and the titanium alloy formed by the aluminum, the vanadium and the titanium has the characteristics of high strength, high heat strength, good corrosion resistance, good acid resistance and the like; the copper element can passivate various corrosive acids, and is matched with chromium-nickel-molybdenum to further improve the corrosion resistance and acid resistance of the alloy composition, so that the alloy composition is not easy to generate corrosion spots and cracks and has strong pitting corrosion resistance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a comparative view of a cooking vessel according to the present invention and a non-stick pan according to a comparative example in example IV after being subjected to an acid resistance test, respectively;

FIG. 2 is a schematic diagram of a cooking vessel according to the present invention after wear testing in a fifth embodiment;

FIG. 3 is a schematic diagram of comparative example 1 in example five after wear resistance testing;

FIG. 4 is a schematic diagram of comparative example 2 of example five after wear resistance testing;

FIG. 5 is a schematic diagram of a cooking vessel according to the present invention after corrosion resistance testing in a sixth embodiment;

FIG. 6 is a schematic diagram of comparative example 1 in example six after corrosion resistance testing;

FIG. 7 is a schematic diagram of comparative example 2 in example six after corrosion resistance testing;

fig. 8 is a schematic diagram of an arc-melting process in the third embodiment.

Detailed Description

In order to more clearly illustrate the general inventive concept, reference will be made in the following detailed description, by way of example, to the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than as described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc. indicate or refer to an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," 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 present application. In this specification, schematic representations of the above terms are not necessarily directed 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.

Embodiment one:

the embodiment provides a cooking container, which comprises a cooker substrate, wherein a melting layer is attached to the surface of the cooker substrate, the melting layer is an alloy composition, the alloy composition is formed by melting metal wires made of different materials, the melting layer is provided with a main spraying surface positioned at the center of the cooker, and the thickness of the melting layer on the main spraying surface is 0.2 mm-0.8 mm; the alloy composition comprises, by mass, 5.43% -9.87% of chromium, 4.35% -13.4% of nickel, 0.54% -2.9% of molybdenum, 54.2% -63.71% of titanium, and the balance of iron and unavoidable impurities.

Further, the pot base body is provided with a bottom wall and a side wall, and the thickness of the bottom wall is 2.5mm-6mm; the main spraying surface completely covers the surface of the bottom wall, and the thickness ratio of the bottom wall to the thickness of the main spraying surface melt-spraying layer is 3.2-30.

Further, the meltallizing layer is at least attached to the inner surface of the pot base body, the inner surface of the container base body forms an attaching surface combined with the meltallizing layer, and the surface of the meltallizing layer is a cooking surface; or the meltallizing layer is at least attached to the inner surface of the cooker base body, at least one non-adhesive layer is attached to the surface of the meltallizing layer, and the surface of the non-adhesive layer is a cooking surface.

The alloy composition is formed by melting and jetting metal wires with different materials, provides melting and jetting raw materials of the metal wires with different materials, and simultaneously melts and jets the melting and jetting raw materials of the metal wires with different materials to the surface of the cooking container base body to form the melting and jetting layer.

Further, the alloy composition comprises 6.52% -9.06% of chromium, 5.8% -10.87% of nickel, 1.09% -2.54% of molybdenum, 54.2% -63.54% of titanium, and the balance of iron and unavoidable impurities.

Further, the alloy composition comprises 6.88% -8.7% of chromium, 6.52% -10.14% of nickel, 1.45% -2.54% of molybdenum and 56.25% -63.54% of titanium, and the balance of iron and unavoidable impurities.

Further, the alloy composition further comprises 0.02% -1.09% copper by mass%.

Further, the alloy composition further comprises 0.22% -0.72% copper by mass%.

Further, the alloy composition further comprises 0.64% -5.74% of aluminum and 1.28% -3.83% of vanadium in mass%.

Further, the alloy composition further comprises 3.51% -4.3% of aluminum and 2.23% -2.87% of vanadium in mass%.

Further, the container substrate is selected from at least one of iron, iron alloy, aluminum alloy, copper and copper alloy materials; the smelting raw materials are selected from at least two of iron alloy, stainless steel, titanium alloy and titanium metal; the container matrix is made of aluminum-silicon-magnesium alloy, and the smelting raw materials are stainless steel and titanium metal.

The surface roughness of the penetration layer is Ra 5-20 mu m, the thickness of the penetration layer is uniformly sprayed on the inner surface of the pot base body, and the surface hardness of the penetration layer is HRC 45-HRC 65.

Further, the material bonding test of the container substrate to which the meltallizing layer is attached includes: the melt-spraying layer is formed by coating the inner surface of the container base body by using multi-layer thermal spraying of melt-spraying raw materials of the alloy composition, and the thickness of the melt-spraying layer is 0.2-0.8 mm; cutting the cooking container into a sample with a set area, observing the section structure and the tissue of the sample by using a metallographic microscope, and judging whether the tissue combination between the meltallizing layer and the container matrix is normal or not.

The test sample of 15mm multiplied by 25mm is cut out along the transverse direction of the pot embryo sprayed with the penetration layer, and after the test sample is mechanically ground, polished and corroded in sequence, the cross section structure of the test sample is observed by a metallographic microscope, so that the penetration layer and the pot embryo are tightly combined and have no cracking phenomenon. A certain smelting joint exists between the smelting layer and the pot embryo, and the joint strength is higher.

The microstructure of the fused layer shows that the fused layer is even and compact in structure, larger pores are not seen, the distribution of the fused layer is in a non-coherent shape, the porosity of the fused layer is less than 5% as measured by an image analysis method, and the fused layer and a container matrix are tightly and non-cracked, because titanium is an active metal, the surface tension of fused drops can be reduced, the fluidity of fused particles is improved, the mutual wetting of the particles, pot blanks and the particles is also improved, the thermal expansion coefficient of the fused layer is reduced, the internal stress of the fused layer is reduced, the effect of reducing the porosity and improving the compactness is achieved, a corrosion medium can be effectively reduced to be transmitted to the interface between the fused layer and a pot blank substrate through the pores, and the phenomenon that the fused layer is peeled off due to oxidization is reduced, so that the fused layer has better corrosion resistance is achieved.

Embodiment two:

the present embodiment provides a method for manufacturing a cooking container according to the first embodiment, including the steps of:

forming the container base material;

sand blasting and coarsening the inner surface of the container base material;

providing a melt shot of different wires of the alloy composition;

different metal wires are simultaneously fed into the conductive channel at the same speed through the wire feeding roller,

the spray outlet of the spray gun used for the meltblowing is opposite to the opening of the container base body, the spray outlet swings towards the edge of the cooking container by taking the central axis of the cooking container as a base point, the cooking container rotates around the central axis of the cooking container, and the meltblowing raw materials of the metal wires with different materials are subjected to multilayer thermal spraying to cover the inner surface of the cooking container base body so as to form a meltblowing layer.

Further, the alloy composition is sprayed by electric arc, the raw material for the melting is a linear alloy wire, the melting temperature of the melting is 2800-4350 ℃, the spraying outlet of a spray gun for the melting swings towards the edge of the cooking container by taking the central axis of the cooking container as a base point, the cooking container rotates around the central axis of the cooking container, and the melting layer is formed by covering the inner surface of the container base body by using the melting raw material of the alloy composition by multilayer thermal spraying.

The melting temperature of the melting is 4000 ℃. The melting temperature of 4000 ℃ ensures that the wire material is melted instantly on one hand, accelerates the melting work efficiency, and avoids the defect that the wire material is not firmly combined with the base material of the pot embryo due to early solidification; on the other hand, the hard alloy compound of titanium-chromium-nickel is generated at the meltallizing temperature of 4000 ℃, so that the hardness of the meltallizing layer is improved. The meltallizing temperature is not higher than 4350 ℃, and the direct gasification of the titanium wire is avoided.

Further, preferably, the wire diameters of the melted raw materials of the wires with different materials are the same, and the melted raw materials of the wires with different materials enter the conductive channel at the same wire feeding speed; or the wire diameters of the melt-shot raw materials of the metal wires with different materials are the same, and the melt-shot raw materials of the metal wires with different materials enter the conductive channel at a set wire feeding speed ratio.

Preferably, the titanium alloy or titanium metal is melted and shot as the first metal wire, the stainless steel is melted and shot as the second metal wire, and the weight ratio of the first metal wire to the second metal wire in feeding wire in unit time is 1-2.5: 1, a step of; preferably, the weight ratio of the first metal wire to the second metal wire in the unit time is 1.5-2.0:1.

Further, in this embodiment, the weight ratio of the first wire to the second wire in the unit time is 1.76:1. specifically, in this embodiment, the first wire is a titanium wire, and the second wire is a stainless steel wire.

Embodiment III:

in this embodiment, the titanium wire and the stainless steel wire are fused on the surface of the container substrate by an arc fusion method, as shown in fig. 8, the arc fusion method comprises the following steps:

s2, feeding wires by rollers and powering: the titanium wire and the stainless steel wire are respectively fed into the two conductive channels 4 at a constant speed through the wire feeding roller 3, and are respectively endowed with positive and negative opposite electrical properties;

S4, forming a meltallizing layer: the molten mixture is atomized by compressed air to form fine droplets of metal and sprayed by means of an air stream onto the inner surface 1 of the container base and forms the layer 2.

The titanium wire and the stainless steel wire with specific element contents are subjected to arc melting to form the element content in the mass ratio range in the melting layer in the embodiment I, so that the cooking container with the melting layer can be worn by a turner or shell food materials, the porosity of the melting layer is less than 5%, the transmission of corrosive medium to the interface between the melting layer and a pot blank substrate through pores is effectively reduced, the peeling phenomenon of the melting layer caused by oxidation is reduced, and the cooking container has better corrosion resistance.

Further, the vertical distance D between the initial position of the metal fine drop and the inner surface of the container base body is 70-180 mm, wherein the initial position is the position where the wire extends out of the outlet of the conductive channel and is fused by an arc heat source, and then the metal fine drop is formed by atomization under the action of compressed air and is sprayed to the inner surface of the container base body under the driving of air flow.

The atomized metal fine droplets are conveniently and uniformly sprayed on the inner surface of the pot blank, the metal fine droplets are sprayed in a conical shape through compressed air, and the spraying distance of 70-180 mm is used for ensuring that the atomized metal fine droplets can be spread in a larger range on one hand, avoiding the situation that the atomized metal fine droplets are accumulated in one place, and if the spraying distance is smaller than 70mm, the metal fine droplets are not spread and are easy to be accumulated in a smaller range on the inner surface of the pot blank quickly under the driving of air flow; on the other hand, the metal fine drops are prevented from being sprayed out of the inner surface of the pot blank to be wasted due to the fact that the distance is too far, or the metal fine drops are prevented from being slowly sprayed to the position where the metal fine drops are required due to the fact that the distance is too far, if the spraying distance is larger than 180mm, the range of the diffusion area of the metal fine drops is larger, although the fused layer is easy to uniformly spray on the inner surface of the pot blank, the metal fine drops are thinner at the moment, long-time spraying is needed, the spraying efficiency is lower, the spraying coverage area of the inner surface of the pot blank is not easy to control, and the waste of materials is easy to cause. The throw distances in this application may be specifically 70mm, 80mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, 150 mm, 160 mm, 170 mm, 180 mm. The two conductive channels are respectively connected with the positive electrode and the negative electrode of the power supply, the titanium metal and the stainless steel carry opposite positive and negative charges when entering different conductive channels, the conductive channels are divided into a front section and a rear section, the front sections of the two conductive channels are mutually parallel and respectively connected with the positive electrode and the negative electrode of the power supply, the distances between the rear sections of the two conductive channels tend to be close to each other, so that the titanium metal wire and the stainless steel wire are guided to be close to each other, and the titanium metal wire and the stainless steel wire continue to move forwards along the guiding direction of the rear sections of the two conductive channels after extending out of the conductive channels until an arc heat source is generated and melted when the distance between the two conductive channels is close enough.

Further, the wire feeding rates of the titanium wire and the stainless steel wire are equal, so that the electric charge quantity given to the titanium wire and the stainless steel wire in the conductive channel can be stably controlled, the electric charge quantity of the titanium wire and the stainless steel wire is stable and equal, and the arc melting is further stably controlled, so that the titanium wire and the stainless steel wire are uniformly melted.

Further, the diameters of the titanium metal wires and the stainless steel wires are equal to each other and are 2.0mm, the titanium metal wires and the stainless steel wires with the same diameters enter the conductive channel at equal speed and arc fusion is generated, the balance of the volume content of the titanium metal wires and the stainless steel wires is guaranteed, and meanwhile, the spraying time of the metal fine drops is 5-10 seconds, so that a fusion layer with the thickness of 0.2-0.8 mm is formed. Too thin a layer of meltallizing can result in affecting its corrosion and wear resistance properties, too thick can result in a pan with a large overall weight, affecting user experience, and specifically, the thickness of the layer of meltallizing can be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm.

The spraying distance is kept constant so that the meltallizing layer is uniformly sprayed on the inner surface of the pot embryo. It should be explained that, because the air flow drives the metal fine droplets to spray towards the inner surface of the pot embryo in a conical manner, the spraying distance of each metal fine droplet has a slight difference, but the vertical distance between the initial position and the inner surface of the pot embryo is still constant, the slight difference of the micro-uneven meltallizing layer caused by conical spraying is negligible, and the spraying unevenness caused by the change of the vertical distance between the initial position of the metal fine droplet and the inner surface of the pot embryo is obvious and cannot be ignored.

Further, the air pressure of the compressed air is 0.5-0.8 MPa.

Further, the penetration current is 80 to 140A.

Further, the outlet of the conductive path swings along the inner surface of the container base so that the vertical distance of the initial position of the metal fine droplet from the inner surface of the container base is kept constant, and the metal fine droplet is ejected to cover the entire inner surface of the container base. Namely, the spraying distance of the metal fine drops is kept constant, and the container substrate generally comprises a bottom and an arc-shaped side wall of the pot, and the bottom of the pot of many cookers is round bottom to realize the oil gathering effect, so that when the spraying layer is sprayed, if the spraying direction of the metal fine drops is changed, the vertical distance from the metal fine drops to the inner surface of the container substrate is changed, and further, the thickness of the spraying layer on each part of the inner surface of the container substrate is obviously uneven, and the quality of the spraying layer is affected.

Embodiment four:

the embodiment provides an acid resistance test method, wherein a plurality of cooking containers with various process conditions conforming to the first embodiment are randomly selected to be tested for a plurality of times respectively:

cleaning the cooking container of the first embodiment, naturally airing, filling 5% acetic acid solution into the cooking container, heating the cooking container to boil the acetic acid solution and keeping the boiling state for ten minutes, closing the heat source, and standing for 12 hours, wherein the filling amount of the acetic acid solution is about 3/5 of the volume of the cooking container. After standing, the acetic acid solution in the cooking container is put everywhere and the cooking container is cleaned, and whether the inner wall of the cooking container is discolored or not is observed.

Comparative example: the non-stick pan with the conventional material of the meltallizing layer on the market is adopted as a comparison example, the manufacturing process of the non-stick pan is consistent with that of the cooking container in the first embodiment, the component content of the meltallizing layer is only different, the inner surface of the non-stick pan and the inner surface of the cooking container in the first embodiment are similar in color to the naked eyes in the initial state, and a plurality of non-stick pans are respectively tested for a plurality of times under the same acid resistance test condition.

As shown in fig. 1, the pot in the upper position in fig. 1 is the non-stick pot in the comparative example, and the pot in the lower position in fig. 1 is the cooking container in the first embodiment. From the results of multiple tests, the inner surface of the non-stick pan of the conventional meltallizing layer in the market has obvious yellowing visible after acid resistance test, and the inner surface of the cooking container in the first embodiment is visible and consistent with that before the acid resistance test. That is, the cooking container in the first embodiment has acid resistance exceeding that of the non-stick pan in the comparative example.

Fifth embodiment:

the embodiment provides a wear-resistant test method, wherein a plurality of cooking containers with various process conditions conforming to the first embodiment are randomly selected to be tested for a plurality of times respectively:

applying a force of 1.3 to 1.7 kg to the wire ball by using a mechanical arm, and circularly rubbing the wire ball against the inner surface of the cooking container in the first embodiment under the force, wherein the wire ball circularly rubs the inner surface of the cooking container back and forth, and the wire ball is replaced once every 1 ten thousands of times of circulation, and the total circulation is 5 ten thousands of times; the frequency of the steel wire ball rubbing the inner surface of the cooking container back and forth circularly is 55-65 times/min, and the back and forth circulation movement distance is 95-105 mm. And placing eggs in the positions where the steel wire balls rub against the cooking container for cooking, and observing whether the phenomenon of sticking to the pot occurs.

In this embodiment, a mechanical arm is used to apply 1.5 kg of force to the steel wire ball, the frequency of the steel wire ball rubbing the inner surface of the cooking container back and forth in a circulating way is 60 times/min, and the back and forth circulating movement distance is 100mm. As shown in fig. 2, the cooking container of the first embodiment still has a good non-stick effect.

Comparative example 1: the non-stick pan with the conventional material of the meltallizing layer on the market is adopted as a comparison example, the manufacturing process of the non-stick pan is consistent with that of the cooking container in the first embodiment, only the component content of the meltallizing layer is different, and the plurality of non-stick pans under the process condition are respectively tested by using the same wear-resisting test condition for a plurality of times. As shown in fig. 3, the non-stick pan of this comparative example underwent a severe sticking phenomenon after the abrasion resistance test.

Comparative example 2: in the present example, the non-stick pan having the melted-on layer with titanium content of more than 63.77% was used, and specifically, the non-stick pans having the melted-on layer with titanium content of 70%, 75% and 80% were used as examples for a plurality of tests, and the plurality of non-stick pans under the same conditions were tested a plurality of times. As shown in fig. 4, the non-stick pan of this comparative example underwent a severe sticking phenomenon after the abrasion resistance test.

In this embodiment, after the steel wire balls are circularly rubbed against the inner surface of the pan, scratches are inevitably generated on the inner surface of the pan, and the non-stick layer is inevitably damaged.

According to the results of multiple tests, the cooking container in the first embodiment has the advantages that the non-adhesive layer and the meltallizing layer are still kept to be non-adhesive after being damaged to a certain extent due to the combination of the special meltallizing layer and the non-adhesive layer, namely, the cooking container has good wear resistance; the non-stick pans of comparative examples 1 and 2 were sticky, i.e., the non-stick layers and the melt-blown layers were severely damaged, resulting in poor non-tackiness, i.e., poor abrasion resistance.

Example six:

the embodiment provides a corrosion resistance test method, wherein a plurality of cooking containers with various process conditions conforming to the first embodiment are randomly selected to be tested for a plurality of times respectively:

filling 5% by mass of brine into the cooking container of the first embodiment, wherein the filling amount is about 3/5 of the volume of the cooking container, keeping the slightly boiling state for 7 hours after boiling, turning off the heating source and standing for 16 hours, and observing whether the inner surface of the cooking container has swelling change. As shown in fig. 5, the inner surface of the cooking container in the first embodiment is maintained in the state before the test after the corrosion resistance test, and no bulge change occurs.

Comparative example 1: the manufacturing process of the non-stick pan is consistent with that of the cooking container in the first embodiment, only the component content of the melt-shot layer is different, and after a plurality of non-stick pans are respectively tested for a plurality of times under the same corrosion resistance test conditions, the phenomenon that the inner surfaces of the pans bulge is observed. As shown in fig. 6, the non-stick pan of the comparative example underwent a significant swelling phenomenon after the corrosion resistance test.

Comparative example 2: in the present embodiment, the non-stick pan having the meltallizing layer with the titanium content of less than 55.83% is used, and specifically, the non-stick pan having the meltallizing layer with the titanium content of 45%, 40% and 35% respectively is used as an example, and the non-stick pan is tested a plurality of times under the same corrosion resistance test conditions. As shown in fig. 7, the non-stick pan of this comparative example was subjected to corrosion resistance test to cause a remarkable swelling phenomenon.

In this example, the cooking vessel of the first example and the non-stick pans of the comparative examples 1 and 2 were subjected to corrosion resistance tests with brine, respectively, and as a result of the test, the brine in the corrosion resistance test of this example had a phenomenon of swelling by partially penetrating through the non-stick layers of the comparative examples 1 and 2 and corroding the penetration layer under the test conditions, whereas the cooking vessel of the first example had no swelling by the test, and the corrosion resistance performance thereof was significantly higher than that of the non-stick pans of the comparative examples 1 and 2.

The cooking container subjected to the test generally cannot be corroded, worn, corroded and the like in the daily use process. And each test condition is more severe, can distinguish the performance of conventional non-stick pan and the different meltallizing layer of component content's non-stick pan and the culinary art container in this application. Through the test, the acid resistance, the wear resistance and the corrosion resistance of the cooking container are obviously superior to those of the non-stick pan in the comparative example in the application, and the cooking container has more excellent performance.

Embodiment seven:

in this embodiment, zinc oxide is mixed in the non-adhesive layer forming the cooking surface, and the mass percentage of the zinc oxide is 0.5-2%.

The non-stick coating comprises a bottom coating and a top coating arranged on the bottom coating, and the zinc oxide is distributed on the top coating.

The surface coating mixed with zinc oxide can resist bacteria by dissolving out metal zinc ions, namely, zinc oxide slowly releases zinc ions in an aqueous medium to destroy and kill cells, thereby achieving the aim of sterilization and antibiosis. The zinc oxide in the embodiment is mixed tetrapod-like zinc oxide, and because the tetrapod-like zinc oxide has acicular active center and tip effect, water and oxygen in the air can be activated, hydroxyl free radicals and active oxygen ions are generated, effective sterilization and antibiosis are carried out, and particularly in a water-moist state, the antibiosis and sterilization effects of the surface coating are greatly improved, and the use safety and sanitation of the cooker are improved.

The technical solution protected by the present invention is not limited to the above embodiments, and it should be noted that, the combination of the technical solution of any one embodiment with the technical solution of the other embodiment or embodiments is within the scope of the present invention. While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.

Claims

1. A pan capable of resisting coating peeling comprises a pan substrate, and is characterized in that a meltallizing layer is attached to the surface of the pan substrate, the meltallizing layer is an alloy composition,

the alloy composition is formed by melting and jetting metal wires with different materials, the first metal wire is titanium alloy or titanium metal, the second metal wire is stainless steel, the melting and jetting layer is provided with a main jetting surface positioned at the center of the pot, and the thickness of the melting and jetting layer on the main jetting surface is 0.2-0.8 mm;

the alloy composition comprises, by mass, 5.43% -9.87% of chromium, 4.35% -13.4% of nickel, 0.54% -2.9% of molybdenum, 54.2% -63.71% of titanium, and the balance of iron and unavoidable impurities.

2. The anti-spalling pan of claim 1, wherein the pan base has a bottom wall and a side wall, the bottom wall having a thickness of 2.5mm to 6mm; the main spraying surface completely covers the surface of the bottom wall, and the thickness ratio of the bottom wall to the thickness of the main spraying surface melt-spraying layer is 3.2-30.

3. The anti-spalling cookware according to claim 2, wherein the melted and sprayed layer is attached to at least an inner surface of the cookware base, the inner surface of the cookware base forming an attachment surface to which the melted and sprayed layer is bonded, the surface of the melted and sprayed layer being a cooking surface; or,

the said meltallizing layer is adhered to the inner surface of the said pan base member at least, the surface of the said meltallizing layer adheres to at least one layer of non-adhesive layer, the surface of the said non-adhesive layer is the cooking surface.

4. A pan resistant to peeling of coating according to claim 3, wherein zinc oxide is mixed in the non-stick layer forming the cooking surface, the zinc oxide being 0.5-2% by mass.

5. The anti-spalling pan of claim 4, wherein the non-stick layer comprises a primer layer and a topcoat layer disposed over the primer layer, the zinc oxide being distributed over the topcoat layer.

6. The pan of claim 1, wherein the surface roughness of the layer of the different material wire is less than the surface roughness of the layer of the single stainless wire, and the surface roughness of the layer of the different material wire is Ra 5-20 μm.

7. The anti-spalling cookware of claim 6, wherein the thickness of the layer of melted shot is uniformly sprayed on the inner surface of the cookware base.

8. The pan of any one of claims 1-7, wherein the alloy composition comprises 6.52% -9.06% chromium, 5.8% -10.87% nickel, 1.09% -2.54% molybdenum, and 54.2% -63.54% titanium, the balance being iron and unavoidable impurities.

9. The resistant to spalling of claim 8, wherein the alloy composition comprises 6.88% to 8.7% chromium, 6.52% to 10.14% nickel, 1.45% to 2.54% molybdenum, and 56.25% to 63.54% titanium, the balance being iron and unavoidable impurities.

10. The resistant to spalling of any of claims 1-7, wherein the alloy composition further comprises 0.02% to 1.09% copper by mass.

11. The anti-spalling pot of claim 10, wherein the alloy composition further comprises 0.22% to 0.72% copper by mass%.

12. The anti-spalling pot of claim 10, wherein the alloy composition further comprises 0.64% to 5.74% aluminum and 1.28% to 3.83% vanadium in mass%.

13. The resistant to spalling of claim 12, wherein the alloy composition further comprises 3.51 to 4.3% aluminum and 2.23 to 2.87% vanadium in mass%.