CN115137215A

CN115137215A - Cooker and method for manufacturing the same

Info

Publication number: CN115137215A
Application number: CN202110690238.1A
Authority: CN
Inventors: 潘广彬; 戴文俊; 孙华忠
Original assignee: Zhejiang Futengbao Household Products Co ltd
Current assignee: Zhejiang Futengbao Household Products Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-10-04

Abstract

The present application provides a cooker and a method of manufacturing the same, wherein the cooker includes: a base; the intermediate layer is arranged on at least one part of the surface of the substrate and is formed by spraying aluminum or aluminum alloy serving as a raw material; the non-stick layer is arranged on the surface of the middle layer and is formed by spraying stainless steel serving as a raw material; wherein, the material of base member is stainless steel. The cooker provided by the embodiment of the application takes an aluminum or aluminum alloy material as a spraying raw material, the surface of a stainless steel base material is sprayed to form the intermediate layer, and then the stainless steel material is taken as a raw material, and the intermediate layer is sprayed to form the skeleton type mesoporous physical non-stick layer with the functions of wear resistance, corrosion resistance, oil locking and oil storage.

Description

Cooker and method for manufacturing the same

Technical Field

The application relates to the field of kitchen utensils, in particular to a cooker and a manufacturing method of the cooker.

Background

Currently, in the conventional cookware industry, in order to improve the non-stick property of cookware blanks made of stainless steel as a base, a non-stick coating, such as PTFE or silicone resin, is usually applied on the surface of the stainless steel blank. However, the surface chemical coated product has poor abrasion resistance due to its low surface hardness, which affects the service life. In order to solve the problem, the industry develops a process of spraying a non-stick coating on the surface of the stainless steel after etching, for example, the rib structure of the stainless steel effectively avoids the abrasion of the organic coating on the surface. However, the surface of the product still has an organic coating, and the ribbed stainless steel substrate is exposed on the surface, so that the performance of the organic coating is limited, and excellent non-adhesiveness cannot be realized.

Disclosure of Invention

Therefore, the present application aims to provide a cooker and a manufacturing method thereof, which solve the problems that the wear resistance of the product formed by coating with a chemical coating is poor and the service life is affected in the prior art, and the food safety of the product has hidden troubles due to the existence of the chemical coating. Therefore, it is a concern of the present application to provide cookware with high wear resistance, high corrosion resistance, and high bond strength properties, without chemical coating.

A first aspect of the present application is to provide a cooker including: a substrate; the intermediate layer is arranged on at least one part of the surface of the substrate and is formed by spraying aluminum or aluminum alloy serving as a raw material; the non-stick layer is arranged on the surface of the middle layer and is formed by spraying stainless steel serving as a raw material; wherein, the material of base member is stainless steel.

According to the cooker, the middle layer is formed by spraying aluminum or aluminum alloy serving as a raw material, and the aluminum has good heat conducting performance and anode low-potential corrosion resistance, so that the formed middle layer has anode corrosion resistance, quick cooking heat conduction and local porous oil locking/storage. Stainless steel is adopted as a raw material to be sprayed to form a non-stick layer, and the non-stick layer with high porosity and high wear resistance can be formed because the stainless steel has excellent wear resistance and rust resistance. Because the two materials are not added with any non-chemical coating, the surface formed on the cooker is healthier and safer. Compared with a conventional stainless steel pot, the oil locking/storing function is realized, and the physical non-stick effect is achieved; compared with the conventional stainless steel spraying pot, the stainless steel spraying pot has no chemical coating, is more sanitary and healthy, is wear-resistant and has long service life; compared with a honeycomb stainless steel pot, the oil-locking/oil-storing effect is achieved by utilizing the three-dimensional pores of the film layer, and the pot has no chemical coating and has a physical non-stick effect.

In some embodiments, the porosity of the non-stick layer is: 5% -20%, the porosity of the embodiment of the application needs to be set in a certain range, if the porosity of the non-stick layer is too large, the surface of the formed non-stick layer is too rough, when the cooker is used, food and the rough inner surface of the cooker are seriously rubbed, so that sound can be loud during operation, although the large pores are favorable for the oil storage effect, the large pores are not favorable for the corrosion resistance effect; if the porosity that sets up the non-stick layer is too little, just reduced the oil storage effect, although corrosion resisting property can promote, but be unfavorable for the promotion of the non-stick effect of the non-stick layer of follow-up formation, set up reasonable porosity, on the one hand, can make the cooking utensil of formation have better corrosion resisting property and form suitable roughness, on the other hand, make the cooking utensil have better oil storage effect, the oil storage here can be favorable to the promotion of non-stick effect of non-stick layer, based on this, with porosity control in reasonable scope, can compromise oil storage and corrosion-resistant two aspect performance simultaneously, make the advantage of cooking utensil more obvious.

In some embodiments, the porosity of the non-stick layer is: 10 to 15 percent.

In some embodiments, the thickness of the intermediate layer is: 0.5-2.5mm. The intermediate layer of the embodiment of the application needs to have enough thickness, and if the intermediate layer is arranged to have too thin thickness, the heat conduction and corrosion resistance performance is insufficient; if the thickness of the middle layer is too thick, the cost is too high, and the promotion effect on the heat conduction performance and the oil storage performance is not obvious, on the basis, the thickness of the middle layer is controlled within a reasonable range, two factors of the performance and the cost can be considered simultaneously, and the advantages of the cooker are more obvious.

In some embodiments, the non-stick layer has a thickness of 30-200um. The non-stick layer of the embodiment of the application needs to have enough thickness, if the thickness of the non-stick layer is too thin, the stainless steel material can only be dispersed on the surface of the middle layer in a particle form, and a continuous porous film cannot be formed; if the thickness of the non-stick layer is too thick, the cost for manufacturing products can be increased, and on the other hand, the heating speed of the formed cooker product is low due to poor heat conductivity of stainless steel, so that the cooker is not in line with market requirements.

In some embodiments, the aluminum or aluminum alloy is in a powder state, the powder has a particle size of 200 to 400 mesh, and the aluminum or aluminum alloy is in a wire state, the wire has a diameter of 1.0 to 1.4mm. In some embodiments, the stainless steel has a diameter of 1.2 to 1.8mm in a wire state, and the stainless steel has a powder size of 200 to 400 mesh in a powder state.

The cooking utensil that this application embodiment provided, raw and other aspects factors such as cost can exist with the form of silk material or powder, based on technological condition, need set up silk material size or powder granularity at a suitable within range, if set up silk material size or powder granularity too little, technological condition is difficult to reach, technology preparation cost is too big, if set up silk material size or powder granularity too big, the coating aperture that forms is too big or the roughness of the coating that forms is too big, is unfavorable for subsequent operation.

In some embodiments, the stainless steel is 304 or 316 stainless steel. The aluminum alloy is 3003 series aluminum. According to the cooker provided by the embodiment of the application, 3003 series aluminum is used as a raw material for spraying the middle layer, 304 or 316 stainless steel is used as a raw material for spraying the non-stick layer, and the two raw materials are food grade raw materials and simultaneously accord with sanitary indexes, so that the safety of the cooker is further guaranteed.

In some embodiments, the cooker includes: at least one of an inner container of the electric cooker, an inner container of the pressure cooker, a frying pan, a baking tray, an oven and a pan.

In another aspect of embodiments of the present application, there is provided a method of manufacturing a cooker, the method including: providing a base body of a cooker; spraying an intermediate layer on at least one part of the surface of the matrix by using aluminum or aluminum alloy as a raw material through a spraying process; and spraying stainless steel as a raw material on the intermediate layer by using a spraying process to form a non-stick layer so as to form the non-stick layer structure.

According to the manufacturing method of the cooker, the middle layer is formed by spraying aluminum or aluminum alloy serving as a raw material on the surface of the stainless steel substrate, and the formed middle layer has anode corrosion resistance, fast cooking heat conduction and local porous oil locking/storage because the aluminum has good heat conduction performance and anode low-potential corrosion resistance. Stainless steel is adopted as a raw material to be sprayed on the middle layer to form the non-stick layer, and the non-stick layer with high porosity and high wear resistance can be formed on the middle layer because the stainless steel has excellent wear resistance and rust resistance. The two materials are not added with any non-chemical coating, so that the formed inner surface of the cooker is healthier and safer, and the inner surface of the manufactured cooker can form a uniform and complete skeleton type mesoporous physical non-stick layer with the functions of wear resistance, corrosion resistance, oil locking/oil storage.

In some embodiments, when 3003 aluminum is used as the raw material of the intermediate layer, the spraying the intermediate layer on at least a part of the surface of the substrate by using a spraying process includes: and spraying an intermediate layer with the thickness of 0.5-2.5mm on at least part of the surface of the substrate by adopting a metal arc spraying mode at the current of 100-380A and the voltage of 20-25V.

The embodiment of the application provides a manufacturing method of cooking utensil, through setting up different current-voltage isoparametric, can guarantee that raw and other materials aluminium has better bonding strength and reasonable porosity with as having between the idiosome of base member, if the parameter that sets up current-voltage is too little, the surface in the intermediate level of spraying can be very coarse and the coating combines the fastness inadequately, thereby can cause the influence to the performance of cooking utensil and subsequent process, if the parameter that sets up current-voltage is too big, then can make raw and other materials aluminium overheat, cause serious burn and oxidation, influence anticorrosive effect, so this application sets up current-voltage at a reasonable within range, the thickness in the intermediate level of simultaneous control formation, make anticorrosive ability and the heat conductivility of cooking utensil further ensured. In addition, the raw materials are food-grade raw materials and also meet the hygienic index, so that the safety of the cooker is further guaranteed.

In some embodiments, when the raw material of the non-stick layer is 304 or 316 stainless steel, the spraying the non-stick layer on the intermediate layer by using a spraying process includes: and adopting a plasma spraying mode, spraying and forming an anti-sticking layer with the thickness of 30-200um on the intermediate layer when the current is 250-300A and the voltage is 35-40V.

The manufacturing method of the cooker provided by the embodiment of the application, through setting different parameters such as current and voltage, can guarantee that raw and other materials stainless steel and intermediate level have better bonding strength and reasonable porosity, if it is too little to set up current and voltage, the surface of the non-stick layer of spraying can be very coarse and the coating combines the fastness inadequately, thereby can cause the influence to the performance and subsequent process of cooker, if it is too big to set up current and voltage's parameter, then can make raw and other materials stainless steel excessively oxidize, it is black, the austenite structure is destroyed, influence antirust effect, this application is through setting up current and voltage in a reasonable scope, make raw and other materials stainless steel in abundant molten state, and under the condition of not being oxidized in a large number, protect its austenite structure and prepare not destroy, the thickness of the non-stick layer that the while control formed, make the anticorrosive property and the thermal conductivity of the cooker that forms further obtain the guarantee. In addition, the raw materials are food-grade raw materials and also meet the hygienic index, so that the safety of the cooker is further guaranteed.

According to the manufacturing method of the cooker, the heat conduction efficiency of the manufactured cooker is 175-260s.

In some embodiments, the method further comprises: and roughening the surface of the matrix before spraying. The surface of the substrate is roughened to make a mat for spraying in subsequent steps.

In some embodiments, the method further comprises: and treating the surface of the non-stick layer to make the surface of the non-stick layer smooth.

According to the manufacturing method of the cooker, the aluminum alloy material and the stainless steel material are sprayed on the surface of the roughened stainless steel substrate, and the surface is subjected to process modification such as shot blasting and polishing to form the uniform and complete skeleton type mesoporous physical non-stick layer with the functions of wear resistance, corrosion resistance and oil locking/storage.

Drawings

The above and other objects and features of the present application will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a partial cross-sectional structural view of a cooker provided in an embodiment of the present application;

fig. 2 is a schematic flow chart of a manufacturing method of a cooker provided in an embodiment of the present application.

Detailed Description

Embodiments in accordance with the present application will now be described in detail with reference to the drawings, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

The embodiment of the application has solved current cooking utensil on the one hand and can't compromise unfavorable conditions such as wearability, non-stick performance, healthy environmental protection simultaneously, and on the other hand has solved current cooking utensil for there is hidden danger in the edible security of cooking utensil owing to there is the chemical coating. As described in detail below.

Generally, the conventional stainless steel pot has long service life but no non-stickiness. The conventional spray-coating stainless steel pan has good non-stick property due to the existence of organic coating, but the coating is easy to wear and has short service life. The honeycomb etched stainless steel pot has long service life due to the protection of the honeycomb structure, but is still covered by chemical coating and has general non-stickiness. The prior art cannot give consideration to the adverse conditions of wear resistance, non-stick performance, health, environmental protection and the like.

Accordingly, based on the above-described problems, an embodiment of an aspect of the present application provides a cooker. Next, the constitution of the cooker according to the present application will be described in detail with reference to fig. 1.

As shown in fig. 1, a cooker includes: the middle layer 200 is arranged on at least one part of the surface of the base body 100, and the middle layer 200 is formed by spraying aluminum or aluminum alloy serving as a raw material; the non-stick layer 300 is arranged on the surface of the middle layer 200, and the non-stick layer 300 is formed by spraying stainless steel serving as a raw material; the material of the substrate 100 is stainless steel.

In the present embodiment, the intermediate layer 200 may be disposed on the inner surface of the cooker or a portion of the inner surface that contacts the food material, and in the present embodiment, the aluminum or aluminum alloy and the stainless steel are food grade raw materials. The base 100 may form a cooker or may be a part formed on a surface of the cooker contacting with food.

The cooking utensil that this application embodiment provided to use aluminium or aluminum alloy to carry out the spraying and form the intermediate level as raw and other materials, because aluminium has that heat conductivility is good and positive pole low potential is anticorrosive, also accords with sanitary index simultaneously, so the intermediate level that forms has that the positive pole is anticorrosive, culinary art heat conduction is fast and local porous lock oil and oil storage performance. Stainless steel is adopted as a raw material to be sprayed to form the non-stick layer, and the stainless steel has excellent wear resistance and rust resistance, so that the non-stick layer with high porosity and high wear resistance can be formed. The middle layer with the plurality of holes is formed on the base body 100 by spraying aluminum or aluminum alloy, the non-stick layer is formed on the middle layer, the plurality of holes in the middle layer can be used for storing oil, and the non-stick effect of the non-stick layer formed by stainless steel in the follow-up process is further improved.

Because the two materials are both made of food-grade raw materials and no non-chemical coating is added, the surface formed on the inner surface of the cooker is healthier and safer. Compared with a conventional stainless steel pot, the oil locking/storing function is realized, and the physical non-stick effect is achieved; compared with the conventional stainless steel spraying pot, the stainless steel spraying pot has no chemical coating, is more sanitary and healthy, is wear-resistant and has long service life; compared with a honeycomb stainless steel pot, the oil-locking and oil-storing effect is achieved by utilizing three-dimensional pores (namely, the three-dimensional pores are equivalent to the skeleton type mesopores of the formed non-stick layer structure), and the oil-locking and oil-storing pot has no chemical coating and has a physical non-stick effect.

In the embodiment of the present application, the cooker includes any one of: an inner container of an electric cooker, an inner container of a pressure cooker, a frying pan, a baking tray, an oven and a pan.

In some embodiments, the porosity of the non-stick layer is: 5 to 20 percent. Illustratively, the porosity of the non-stick layer can be 8% and 17%, the porosity of the non-stick layer in the embodiment of the application is too large, which easily causes the surface of the formed non-stick layer to be too rough, when in use, food and the inner surface of the cooker rub seriously, which causes the sound to be loud during operation, although the large porosity is favorable for the oil storage effect, the large porosity is unfavorable for the corrosion resistance effect; if the porosity that sets up the non-stick layer is too little, the oil storage effect has just been reduced, although corrosion resisting property can promote, but be unfavorable for the promotion of the non-stick effect on the non-stick layer of follow-up formation, set up reasonable porosity, on the one hand, can make the cooking utensil of formation have better corrosion resisting property and form suitable roughness, on the other hand, make the cooking utensil have better oil storage effect, the oil storage here can be favorable to the promotion of non-stick effect on the non-stick layer, on the basis of this, with porosity control in reasonable within range, can compromise oil storage and corrosion-resistant two aspects performance simultaneously, make the advantage of cooking utensil more obvious.

In the examples of the present application, porosity was measured as (1-density after spraying/density of raw material) 100% calculation. Illustratively, 3003 theoretical density of aluminum =2.7g/cm ³ When 3003 aluminum is used as a raw material of the intermediate layer, the density of the aluminum mesoporous film layer (i.e., the intermediate layer) formed after spraying is about: 2.3-2.5g/cm ³ The porosity of the intermediate layer formed is about: 7 to 15 percent. Theoretical density of 304/316 stainless steel =7.9g/cm ³ When the stainless steel is 304/316 stainless steel, the density of the 304/316 mesoporous film layer (i.e. non-stick layer) after the meltallizing is about: 7.3-7.5g/cm ³ The porosity of the formed non-stick layer is about: 5 to 8 percent. Firstly, forming a porous intermediate layer on a stainless steel substrate, and then forming a non-stick layer with pores on the intermediate layerThe porous structure of the present invention will further improve the non-stick effect of the non-stick layer, but the density of each layer after the meltjetting of the present application is not limited thereto, and is only an example.

In some embodiments, the porosity of the non-stick layer is: 10 to 15 percent. Illustratively, the porosity of the non-stick layer is 13%.

In some embodiments, the thickness of the intermediate layer is: 0.5-2.5mm, which may be 1mm, 1.5mm, or 2mm as an example, the intermediate layer in the embodiment of the present application needs to have a sufficient thickness, and if the thickness of the intermediate layer is set too thin, the heat conduction and corrosion resistance may be insufficient; if the thickness of the middle layer is too thick, the cost is too high, and the heat conduction performance and the oil storage performance are not obviously improved, on the basis, the thickness of the middle layer is controlled within a reasonable range, two factors of the performance and the cost can be considered at the same time, and the advantages of the cooker are more obvious.

In some embodiments, the thickness of the non-stick layer is 30-200um, and exemplarily, it can be 80um, 100um, 120um, 160um, 180um, and the non-stick layer of the embodiments of the present application needs to have a sufficient thickness, and if the thickness of the non-stick layer is set too thin, the stainless steel material can only be dispersed on the surface of the middle layer in the form of particles, and cannot form a continuous porous film; if the thickness that sets up the non-stick layer is too thick, can increase the cost of manufacturing the product on the one hand, on the other hand, because stainless steel heat conductivity is poor, the cooking utensil product rate of heating that leads to forming is slow, does not accord with market demand, based on this, will not control the thickness of non-stick layer in reasonable scope, can compromise many-sided factor simultaneously for the advantage of cooking utensil is more obvious.

In some embodiments, when the aluminum or aluminum alloy is in the form of a powder, the powder has a particle size of 200-400 mesh, which may be 300 mesh, for example, the powder has a larger particle size, the roughness of the formed intermediate layer is too large, the powder has a smaller particle size, and the process manufacturing cost is too large. When the aluminum or aluminum alloy is in a wire shape, the diameter of the wire is 1.0-1.4mm, illustratively 1.2mm, the diameter of the wire is small, the process preparation process is difficult to realize, the diameter of the wire is large, and the formed intermediate layer has too large pores, which is not favorable for subsequent spraying operation of an anti-sticking layer.

In some embodiments, when the stainless steel is in the form of a wire, the diameter of the wire is 1.2-1.8mm, for example, 1.5mm, the diameter of the wire is small, the process is difficult to implement, the diameter of the wire is large, and the pores of the formed non-stick layer are too large, which affects the non-stick effect. When the stainless steel is in a powder state, the particle size of the powder is 200 to 400 mesh, for example, 300 mesh is possible, the powder particle size is large, the roughness of the non-stick layer is too large, the powder particle size is small, and the process preparation cost is too large.

In another aspect of the embodiments of the present application, a manufacturing method of a cooker is provided, and fig. 2 is a schematic flow chart of the manufacturing method of the cooker provided by the embodiments of the present application. As shown in fig. 2, a method for manufacturing a cooker according to an embodiment of the present application includes the steps of:

step S101, providing a base body of a cooker.

In the embodiment of the present application, the substrate is a stainless steel substrate, and may include any one of the following: the inner container of the electric cooker, the inner container of the pressure cooker, the frying pan, the baking tray, the oven, the pan and the like.

And S102, spraying an intermediate layer on at least one part of the surface of the substrate by using aluminum or aluminum alloy as a raw material through a spraying process.

In the embodiment of the application, the stainless steel is used as a base body, aluminum wire/powder spraying is carried out, and an intermediate layer for anode corrosion prevention, cooking guidance and local porous oil locking/storage is formed. Specifically, the aluminum alloy is 3003 series aluminum wire or aluminum powder; the spraying process adopts metal electric arc spraying, plasma spraying or cold spraying and the like. Illustratively, when 3003 aluminum wires are used as raw materials of the intermediate layer, the intermediate layer with the thickness of 0.5-2.5mm is sprayed on at least part of the surface of the substrate by adopting a metal arc spraying mode under the conditions that the current is 100-380A and the voltage is 20-25V.

The manufacturing method of the cooking utensil that this application embodiment provided, through setting up different parameters such as current-voltage, can guarantee that raw and other materials aluminium has better joint strength and reasonable porosity with as between the idiosome of base member, if the parameter that sets up current-voltage is too little, the surface in the intermediate level of spraying can be very coarse and the coating combines the fastness not enough, thereby can cause the influence to the performance and subsequent process of cooking utensil, if the parameter that sets up current-voltage is too big, then can make raw and other materials aluminium overheat, cause serious burn and oxidation, influence anticorrosive effect, so this application sets up current-voltage in a reasonable within range, the thickness in the intermediate level that the simultaneous control formed, make the anticorrosive ability and the heat conductivility of cooking utensil further obtain the guarantee. In addition, the raw materials are food-grade raw materials and also meet the hygienic index, so that the safety of the cooker is further guaranteed.

And step S103, spraying a non-stick layer on the middle layer by using stainless steel as a raw material through a spraying process to form the cooker.

In the embodiment of the present application, the stainless steel may be 304-series stainless steel wire or powder, and the stainless steel may also be 316-series stainless steel wire or powder; the spraying process adopts electric arc spraying, plasma spraying or cold spraying and the like. Illustratively, when 304 stainless steel powder is used as the raw material of the non-stick layer, the non-stick layer is spray-formed on the intermediate layer by a spray process, which includes: and (3) spraying to form an anti-sticking layer with the thickness of 30-200um on the intermediate layer by adopting a plasma spraying mode at the current of 250-300A and the voltage of 35-40V.

The embodiment of the application provides a manufacturing method of cooking utensil, through setting up different current-voltage isoparametric, can guarantee that raw and other materials stainless steel and intermediate level have better bonding strength and reasonable porosity, if set up current-voltage too little, the surface of the non-stick layer of spraying can be very coarse and the coating combines the fastness inadequately, thereby can cause the influence to the performance of cooking utensil and subsequent process, if set up current-voltage's parameter too big, then can make raw and other materials stainless steel excessively oxidize, blacken, the austenite structure is destroyed, influence antirust effect, this application is through setting up current-voltage at a reasonable within range, make raw and other materials stainless steel in abundant molten state, and under the condition of not being oxidized in a large number, protect its austenite structure to be ready to destroy, the thickness of the non-stick layer of simultaneous control formation, make the corrosion protection performance and the heat conductivility of the cooking utensil that forms further obtain the guarantee. In addition, the raw materials are food grade raw materials and accord with the sanitation index, so that the safety of the cooker is further guaranteed.

Through the above steps S101 to S103, the manufacture of the cooker provided in the embodiment of the present application can be completed.

According to the manufacturing method of the cooker, the middle layer is formed by spraying aluminum or aluminum alloy serving as a raw material on the surface of the stainless steel substrate, and the formed middle layer has anode corrosion resistance, high cooking heat conduction speed and local porous oil locking/storage because the aluminum has good heat conduction performance and anode low-potential corrosion resistance and also meets the hygienic index. Stainless steel is adopted as a raw material to be sprayed on the middle layer to form the non-stick layer, and the stainless steel has excellent wear resistance and rust resistance, so that the non-stick layer with high porosity and high wear resistance can be formed on the middle layer. The two materials are food-grade raw materials, and no non-chemical coating is added, so that the inner surface of the cooker is healthier and safer, and the inner surface of the manufactured cooker can form a uniform and complete skeleton-type mesoporous physical non-stick layer with the functions of wear resistance, corrosion resistance, oil locking/storage, wherein the skeleton type is that the intermediate layer and the non-stick layer form a porous structure non-resistant sticking structure (namely the general name of the intermediate layer and the non-stick layer) on the inner surface of the cooker due to the properties of the selected materials.

In some embodiments, a method of manufacturing a cooker includes: and S104, treating the surface of the non-stick layer to enable the surface of the non-stick layer to be smooth.

In the embodiment of the application, the surface of the sprayed product is physically repaired according to the appearance to eliminate surface defects, wherein the physical repair comprises: deburring, trimming, deoiling, sand blasting, shot blasting and the like.

According to the manufacturing method of the cooker, the surface of the workpiece which is subjected to two metal spraying processes is physically repaired to eliminate surface defects, so that the manufactured cooker has excellent performance and good appearance.

The manufacturing method of the cooker provided by the embodiment of the application further comprises the following steps: the method comprises the steps of forming and preprocessing a stainless steel substrate, wherein the forming of the stainless steel substrate adopts processing technologies such as drawing, spinning, extruding and cutting. The pretreatment is to pretreat the outer surface of the stainless steel substrate before metal spraying, and the pretreatment comprises the following steps: adopting a mode of combining mechanical treatment, chemical pretreatment or mechanical treatment and chemical pretreatment to coarsen the outer surface of the stainless steel matrix, wherein the mechanical treatment comprises the following steps: mechanically sanding, shot blasting and sand blasting; the chemical pretreatment treatment includes degreasing, chemical etching, and the like.

In an embodiment of the present application, a cooker includes: the present application will be described below with reference to the application to a rice cooker inner container, a pressure cooker inner container, a frying pan, a baking tray, an oven or a pan.

The method of manufacturing the wok according to some embodiments of the present application is described in detail below.

Example one

And (3) carrying out aluminum alloy spraying on the workpiece with the pretreated surface to form an anti-corrosion, porous and conductive structure layer (namely the middle layer).

And (3) carrying out stainless steel spraying on the workpiece with the sprayed aluminum wire to form a porous wear-resistant non-stick layer.

Example two

And (3) spraying aluminum alloy on the workpiece with the pretreated surface to form an anti-corrosion, porous and conductive structure layer (namely the middle layer).

EXAMPLE III

And (3) carrying out stainless steel spraying on the workpiece after the aluminum wire spraying to form a porous wear-resistant non-stick layer.

Comparative example 1

Honeycomb stainless steel pot

Comparative example No. two

Common three-layer steel composite sheet pot

Referring to table 1 for the test results of each example and comparative example, table 1 is a schematic table of the test results of each example and comparative example provided in the examples of the present application, and as shown in table 1, the cookware manufactured by the manufacturing method of the cookware in the first to third examples of the present application has a porosity of: 5-15%, the physical non-stick property can reach 4-8 times of circulation, the heating efficiency can reach 175-260 seconds, the corrosion resistance can reach 24-30 hours, the wear resistance can reach more than 10 ten thousand times of circulation, and the bonding strength can reach 10-13MPa. The cooker of comparative example 1 can achieve only 1-2 cycles of physical non-stick, the heating efficiency is 285-295 seconds, the corrosion resistance can only achieve 8-12 hours, the wear resistance can only achieve 0.5-0.8 ten thousand cycles, and the bonding strength can only achieve 1-2MPa. The cooker of comparative example 2 was physically non-stick for only 1-2 cycles, the heating efficiency was 320-330 seconds, the corrosion resistance was only 24-30 hours, the abrasion resistance was more than 10 ten thousand cycles, the bonding strength was only 1-2MPa, and the cooker surface layers of comparative example 1 and comparative example 2 did not have porosity.

Table 1 test results of each example and comparative example are schematically shown in table:

from the comparison, the cooker and the manufacturing method thereof have the advantages that the cooker has high wear resistance, high corrosion resistance, high bonding fastness and excellent heat conducting performance, and meanwhile, the cooker has no chemical coating and has the effect of physical non-sticking.

Wherein, the thickness measurement is to place the cross section of the product under a microscope magnifier to observe and measure the related thickness. Porosity was measured as (1-density after spray/raw material density) 100% calculation. The heating efficiency is the time (seconds) required to add the same volume of water to 95 ℃. The physical non-stick test method comprises the steps of storing oil for 5min by using oil, cleaning the workpiece by using cold water, continuously carrying out the non-stick test of fried eggs at the same position of the workpiece until the eggs stick to a pan, and recording related experimental data. The wear resistance test is carried out according to the national standard GB/T32388 of the cooker products. The bond strength measurement in the experiment was measured according to the national standard method of bond fastness. The corrosion resistance test is a 5% salt spray corrosion resistance test, which is performed according to the national standard GB/T32388 of kitchenware products.

In summary, the cooker and the cooker manufactured by the manufacturing method of the cooker provided by the embodiment of the application form the intermediate layer by spraying aluminum or aluminum alloy on the surface of the stainless steel substrate, and the formed intermediate layer has anode corrosion resistance, fast cooking heat conduction and local porous oil locking/storage because the aluminum has good heat conduction performance and anode low-potential corrosion resistance and also meets the hygienic index. Stainless steel is adopted as a raw material to be sprayed on the middle layer to form the non-stick layer, and the stainless steel has excellent wear resistance and rust resistance, so that the non-stick layer with high porosity and high wear resistance can be formed on the middle layer. Because the two materials are both food-grade raw materials and no non-chemical coating is added, the inner surface of the cooker formed by the two materials is healthier and safer, and the inner surface of the manufactured cooker can form a uniform and complete skeleton type mesoporous physical non-stick layer with the functions of wear resistance, corrosion resistance and oil locking/storage.

Although the embodiments of the present application have been described in detail above, those skilled in the art may make various modifications and alterations to the embodiments of the present application without departing from the spirit and scope of the present application. It should be understood that modifications and variations may occur to those skilled in the art, which modifications and variations may be within the spirit and scope of the embodiments of the present application as defined by the following claims.

Claims

1. A cooker, characterized by comprising:

a substrate;

the intermediate layer is arranged on at least one part of the surface of the substrate and is formed by spraying aluminum or aluminum alloy serving as a raw material;

the non-stick layer is arranged on the surface of the middle layer and is formed by spraying stainless steel serving as a raw material;

wherein, the material of base member is stainless steel.

2. The cookware according to claim 1, wherein the porosity of the non-stick layer is: 5 to 20 percent.

3. The cookware according to claim 2, wherein the porosity of said non-stick layer is: 10 to 15 percent.

4. The cookware according to claim 1, wherein said intermediate layer has a thickness of: 0.5-2.5mm, and the thickness of the non-stick layer is 30-200um.

5. The cooker of claim 1, wherein the powder has a particle size of 200-400 mesh when the aluminum or aluminum alloy is in the form of powder, the wire has a diameter of 1.0-1.4mm when the aluminum or aluminum alloy is in the form of wire, and the aluminum alloy is 3003-series aluminum.

6. The cooker of claim 1, wherein the wire has a diameter of 1.2-1.8mm when the stainless steel is in a wire form, the powder has a particle size of 200-400 mesh when the stainless steel is in a powder form, and 304 or 316 stainless steel is used as the stainless steel.

7. The cooker according to claim 1, comprising: at least one of an inner container of the electric cooker, an inner container of the pressure cooker, a frying pan, a baking tray, an oven and a pan.

8. A method of manufacturing a cooking appliance as claimed in any one of claims 1 to 7, characterized in that the method comprises:

providing a base body of a cooker;

spraying an intermediate layer on at least one part of the surface of the matrix by using aluminum or aluminum alloy as a raw material through a spraying process;

and spraying stainless steel as a raw material on the intermediate layer by using a spraying process to form a non-stick layer so as to form the cooker.

9. The cooking appliance manufacturing method according to claim 8,

when 3003 series aluminum is adopted as the raw material of the intermediate layer, the spraying and forming of the intermediate layer on at least one part of the surface of the substrate by using a spraying process comprises the following steps:

adopting a metal arc spraying mode, and spraying and forming an intermediate layer with the thickness of 0.5-2.5mm on at least part of the surface of the substrate when the current is 100-380A and the voltage is 20-25V;

when the raw material of the non-stick layer is 304 or 316 stainless steel, the spraying process is used for spraying and forming the non-stick layer on the intermediate layer, and comprises the following steps:

and adopting a plasma spraying mode, and spraying and forming an anti-sticking layer with the thickness of 30-200um on the intermediate layer when the current is 250-300A and the voltage is 35-40V.

10. The method of manufacturing the cooker of claim 8, further comprising: and treating the surface of the non-stick layer to make the surface of the non-stick layer smooth.