CN115181927A - Pot and method for manufacturing same - Google Patents

Pot and method for manufacturing same Download PDF

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Publication number
CN115181927A
CN115181927A CN202111049329.3A CN202111049329A CN115181927A CN 115181927 A CN115181927 A CN 115181927A CN 202111049329 A CN202111049329 A CN 202111049329A CN 115181927 A CN115181927 A CN 115181927A
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CN
China
Prior art keywords
coating
amorphous alloy
soaking
alloy coating
cookware
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CN202111049329.3A
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Chinese (zh)
Inventor
李超
瞿义生
袁华庭
张明
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Wuhan Supor Cookware Co Ltd
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Wuhan Supor Cookware Co Ltd
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Application filed by Wuhan Supor Cookware Co Ltd filed Critical Wuhan Supor Cookware Co Ltd
Priority to CN202111049329.3A priority Critical patent/CN115181927A/en
Publication of CN115181927A publication Critical patent/CN115181927A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/134—Plasma spraying
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/025—Vessels with non-stick features, e.g. coatings
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/08—Metallic material containing only metal elements
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment

Abstract

The invention provides a pot and a method for manufacturing the pot. The cooker comprises a body; a soaking coating layer disposed on the body and comprising a high thermal conductivity material having a thermal conductivity of 150W/m.K to 500W/m.K; and an amorphous alloy coating layer which is arranged on the soaking coating layer and comprises at least one material of Fe, zr, cu, al, mg, ti, sn, ni, pb, zn, nd, ga, mo, hf, cr, ca, Y, si, P, B and C. The cookware provided by the embodiment of the invention has the soaking coating and the amorphous alloy coating, the soaking coating plays a role in rapid heat transfer, and the amorphous alloy coating has low surface energy, excellent bonding strength and good wear resistance, so that the cookware has the characteristics of less oil smoke, wear resistance and the like while being non-sticky, and achieves the effect of lasting non-sticking.

Description

Pot and method for manufacturing same
Technical Field
The invention relates to the field of non-stick cookware, in particular to cookware and a method for manufacturing the cookware.
Background
The non-stick technology of the cookware is mainly realized from the following three directions: 1) Low surface energy of itself; 2) The microcosmic concave-convex structure forms a hydrophobic and oleophobic surface similar to a lotus leaf; 3) The porous oil storage forms a stable oil film, and the oil is used as a mediator to realize non-sticking.
The current nonstick materials for cookers mainly comprise fluorine paint, ceramic paint and organic silicon resin. The three components are mainly sprayed on the inner surface of the pan to prepare the non-stick coating so as to achieve the purpose of non-stick when the food is heated. The fluorine paint mainly comprises PTFE (polytetrafluoroethylene), PFOA (perfluorooctanoic acid ammonium), PFA (copolymer of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene), FEP (fluorinated ethylene propylene copolymer), ETFE (ethylene-tetrafluoroethylene copolymer) and the like, and the non-stick principle of the fluorine paint is that the fluorine-containing polymer has extremely low surface free energy. The ceramic coating mainly comprises silicon-oxygen bonds, is a coating with inorganic silicon as a main component, and mainly forms a nano structure on the surface of the pot body so as to achieve the non-sticky effect. The silicone resin achieves the effect of non-stick mainly by utilizing the characteristic of low surface energy. The three coatings have non-stick effects, but all have obvious defects, specifically, the fluorine coating non-stick coating is not wear-resistant, dishes can not be cleaned by an iron shovel or a steel wire ball or scouring pad, harmful substances can be generated by decomposition at high temperature, and the non-stick property is reduced after the abrasion; the ceramic coating has poor non-stick effect compared with fluorine coating, is mainly non-stick by utilizing silicone oil in a coating system, has poor lasting non-stick property, and is easy to fall off after being generally used for 3 to 6 months; the non-stick effect of the coating formed by the organic silicon resin is poorer than that of the coating formed by the fluorine coating, the color is easy to yellow or gray after the coating is contacted with high temperature or open fire, the hardness is reduced at the high temperature, and the phenomenon of 'back sticking' is easy to generate. Therefore, the existing non-stick materials generally have the phenomenon of poor permanent non-stick property.
Disclosure of Invention
The invention aims to provide a cookware which is not sticky and has the characteristics of less oil smoke, wear resistance and the like, and a method for manufacturing the cookware.
According to an aspect of the present invention, there is provided a pot including a body; a soaking coating layer disposed on the body and comprising a high thermal conductivity material having a thermal conductivity of 150W/m.K to 500W/m.K; and an amorphous alloy coating layer disposed on the soaking coating layer and including at least one material of Fe, zr, cu, al, mg, ti, sn, ni, pb, zn, nd, ga, mo, hf, cr, ca, Y, si, P, B and C. The cookware provided by the embodiment of the invention has the soaking coating and the amorphous alloy coating, the soaking coating plays a role in rapid heat transfer, and the amorphous alloy coating has low surface energy, excellent bonding strength and good wear resistance, so that the cookware has the characteristics of less oil smoke, wear resistance and the like while being non-sticky, and achieves the effect of lasting non-sticking.
According to an embodiment of the present invention, the thickness of the soaking layer may be 50 μm to 200 μm. The thickness of the soaking coating in the range can well play a role in soaking and can provide the binding force of the coating.
According to an embodiment of the present invention, the high thermal conductivity material may include at least one of aluminum, an aluminum alloy, silver, a silver alloy, copper, and a copper alloy, and the high thermal conductivity material may have a particle size of 1000 mesh to 200 mesh. The high thermal conductivity material can prepare a soaking coating with compact tissue structure and low surface roughness in the limit.
According to an embodiment of the present invention, an amorphous phase ratio of the amorphous alloy coating may be 60% to 100%, a porosity of the amorphous alloy coating may be 2% to 10%, and a thickness of the amorphous alloy coating may be 100 μm to 500 μm. The parameters of the amorphous alloy coating can ensure the non-stick property and the wear resistance in the range.
According to embodiments of the present invention, the soaking coating and the amorphous alloy coating may comprise materials with similar coefficients of thermal expansion. The soaking coating and the amorphous alloy coating which comprise materials with similar thermal expansion coefficients can improve the bonding force between the two.
According to another aspect of the present invention, there is provided a method of manufacturing a pot, the method including the steps of: providing a body; forming a soaking coating on the body, wherein the soaking coating comprises a high thermal conductivity material with a thermal conductivity of 150W/m.K to 500W/m.K; and forming an amorphous alloy coating on the soaking coating, wherein the amorphous alloy coating comprises at least one material of Fe, zr, cu, al, mg, ti, sn, ni, pb, zn, nd, ga, mo, hf, cr, ca, Y, si, P, B and C. The cookware manufactured by the method for manufacturing the cookware provided by the embodiment of the invention has the soaking coating and the amorphous alloy coating, the soaking coating plays a role in rapid heat transfer, and the amorphous alloy coating has low surface energy, excellent bonding strength and good wear resistance, so that the cookware has the characteristics of less oil smoke, wear resistance and the like while being non-sticky, and achieves the effect of lasting non-sticking.
According to an embodiment of the invention, the method may further comprise a pre-heating treatment of the body before the step of forming the soaking coating. The body is preheated, so that the temperature difference between the body and the high-thermal-conductivity-coefficient material can be reduced, the thermal stress between the matrix and a subsequently formed coating is reduced, and the quality and the bonding strength of the coating are improved.
According to an embodiment of the present invention, in the step of forming the soaking coating layer, the soaking coating layer may be formed by thermally spraying the high thermal conductivity material onto the body under the following conditions: the speed of conveying the high-thermal conductivity coefficient material is 30-40g/min, the spraying distance is 120 mm-150 mm, the voltage is 50V-80V, the current is 500A-600A, the hydrogen pressure is 0.5 MPa-0.9 MPa, the flow is 2L/min-5L/min, the argon pressure is 0.5 MPa-0.9 MPa, and the flow is 30L/min-50L/min. The production efficiency can be improved by forming the soaking coat under the above conditions.
According to an embodiment of the present invention, in the step of forming the amorphous alloy coating layer, the amorphous alloy coating layer may be formed by low-pressure plasma spraying the at least one material onto the soaking coating layer under the following conditions in a spray chamber having a degree of vacuum of 3Pa and being purged with argon gas to 6 × 103 Pa: the transferred arc power is 30Kw, the arc current is 400A to 600A, the spraying distance is 140mm to 160mm, the spraying angle is 60 degrees to 80 degrees, the speed for conveying the at least one material is 10g/min to 40g/min, the hydrogen pressure is 0.3MPa to 0.7MPa, and the flow is 5L/min to 8L/min. The production efficiency can be improved by forming the amorphous alloy coating under the above conditions.
According to an embodiment of the present invention, the method may further include sanding the amorphous alloy coating after the step of forming the amorphous alloy coating. The coating can have a certain oil absorption effect through the step, so that the non-stick effect of the amorphous alloy coating can be enhanced.
The cookware provided by the embodiment of the invention has the soaking coating and the amorphous alloy coating, the soaking coating plays a role in rapid heat transfer, and the amorphous alloy coating has low surface energy, excellent bonding strength and good wear resistance, so that the cookware has the characteristics of less oil smoke, wear resistance and the like while being non-sticky, and the lasting non-sticky effect is achieved.
Drawings
The above and/or other features and aspects of the present invention will become apparent and appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic view showing a pot according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating a method of manufacturing a pot according to an embodiment of the present invention.
Detailed Description
The embodiments are described below in order to explain the present invention by referring to the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Referring to fig. 1, the present invention provides a pot 10 including a body 100, a soaking coating 200 disposed on the body 100, and an amorphous alloy coating 300 disposed on the soaking coating 200.
The body 100 (or also referred to as pot) may be particularly concave in shape, i.e. the body 100 may have an inner surface 110 for carrying food or the like and an outer surface 120 facing away from the inner surface 110. The body 100 may be made of stainless steel or the like; however, embodiments of the present invention are not limited thereto.
The soaking coating 200 may be disposed on the inner surface 110 of the body 100 and in direct contact with the inner surface 110 of the body 100. Set up soaking coating 200 and can conduct heat fast on body 100 to reduce the pan and be heated the back and appear local high temperature in the use, delay the production of oil smoke, promote user's fried dish and experience. In order to improve the heat transfer effect of the soaking coating 200, the soaking coating 200 includes a high thermal conductivity material having a thermal conductivity in the range of 150W/m · K to 500W/m · K (e.g., 200W/m · K to 450W/m · K, 250W/m · K to 400W/m · K, 300W/m · K to 350W/m · K, or any range giving a combination of values), for example, the high thermal conductivity material may include at least one of aluminum, an aluminum alloy, silver, a silver alloy, copper, and a copper alloy.
In the embodiment of the present invention, it is preferable to use the above-mentioned high thermal conductivity material having the grain size of 1000 mesh to 200 mesh, and when the grain size of the high thermal conductivity material is within this range, the prepared soaking coating 200 has a dense texture and a low surface roughness.
The thickness of the soaking layer 200 may be in the range of 50 μm to 200 μm. The thickness of the soaking coating 200 is too thin, and the soaking effect is poor; the thickness of the soaking coating 200 is too thick and the coating bonding force is not good.
The soaking layer 200 may be formed on the body 100 by a thermal spraying method (e.g., a plasma spraying method, a supersonic flame spraying method, an oxyacetylene flame spraying method, an arc spraying method, an explosion spraying method, etc.), and a process of forming the soaking layer 200 will be described in detail below.
The amorphous alloy coating 300 may be disposed on the soaking coating 200 and in direct contact with the soaking coating 200. The amorphous alloy coating 300 arranged on the soaking coating 200 can improve the wear resistance and achieve the effect of lasting non-adhesion.
The amorphous alloy coating layer 300 may include liquid metal alloy powder, specifically, at least one material of Fe, zr, cu, al, mg, ti, sn, ni, pb, zn, nd, ga, mo, hf, cr, ca, Y, si, P, B, and C. For example, the amorphous alloy coating 300 may include at least one of Fe, zr, cu, al, mg, and Ti with Sn, ni, pb, zn, nd, ga, mo, hf, cr, ca, ti,A combination of at least one of Y, si, P, B, and C (e.g., a high entropy amorphous alloy (which refers to a high temperature amorphous alloy prepared from 5 or more than 5 elements at equal or near equal atomic ratios)). For example, the amorphous alloy coating layer 300 may include one or a combination of Fe-based alloy powder, zr-based alloy powder, cu-based alloy powder, al-based alloy powder, mg-based alloy powder, and Ti-based alloy powder. In particular, the amorphous alloy coating 300 may include Zr 60 -Cu 23 -Al 10 -Ni 5 -Hf 2 、Zr 65 -Ti 5 -Ni 10 -Al 10 -Cu 10 、Fe-Sn-Pb-P-C、Fe 80 -Cr 5 -Mo 6 -B 4 -Si 5 、Fe 50 -Zr 20 -Cr 9 -B 6 -Cu 10 -Y 5 。
The liquid metal alloy powder can be prepared by adopting an atomization powder preparation method, specifically, taking Fe-based alloy metal powder as an example, the molten Fe-based alloy is sprayed onto a copper quenching disc rotating at a high speed (the surface linear velocity can reach 100 m/s), fine particles solidified after the alloy is atomized are scattered to the periphery under the action of centrifugal force, inert gas is sprayed through gas nozzles arranged on the periphery of the disc to accelerate cooling (the cooling rate can reach 106K/s), so that the alloy structure is not too much crystallized and is solidified in a supercooled state, and the liquid metal alloy powder is formed.
In an embodiment of the present invention, too low a fraction of amorphous phase of the amorphous alloy coating 300 decreases non-stick properties, and thus, preferably, the fraction of amorphous phase of the amorphous alloy coating 300 may be 60% -100% (e.g., 65% -100%, 70% -95%, 80% -100%, 90% -95%, or more than 95%). Further, the amorphous alloy coating 300 has too high porosity, the strength of the amorphous alloy coating 300 is decreased, and the wear resistance is affected, and thus, preferably, the amorphous alloy coating may have a porosity of 2% to 10% (2% to 7%, 2% to 5%, or 2% to 3%).
The thickness of the amorphous alloy coating 300 has an influence on the performance of the cookware, for example, if the thickness of the amorphous alloy coating 300 is too thin (for example, there are only 2 to 3 powder deposition layers without the tamping effect of the subsequent spraying particles, the deposited particles are deformed less by force, and the coating density is poor), the amorphous alloy coating 300 is loose and porous, and has poor strength, so that the wear resistance of the amorphous alloy coating 300 is insufficient; if the thickness of the amorphous alloy coating 300 is too thick, heat concentration in the coating during spraying is caused, crystallization transformation is generated on part of the structure, the amorphous phase proportion is reduced, and the non-adhesiveness of the coating is reduced. Therefore, in an embodiment of the present invention, the thickness of the amorphous alloy coating may preferably be 100 μm to 500 μm.
The amorphous alloy coating layer 300 may be formed on the soaking coating layer 200 by a thermal spraying method (e.g., a low pressure plasma method, a supersonic flame spraying method), and a process of forming the amorphous alloy coating layer 300 will be described in detail below.
To improve the bonding force between the soaking coating 200 and the amorphous alloy coating 300, the soaking coating 200 and the amorphous alloy coating 300 may preferably comprise materials with similar coefficients of thermal expansion, for example may comprise homologous materials, for example the soaking coating 200 may comprise an aluminum alloy and the amorphous alloy coating 300 may comprise an Al-based alloy.
According to the embodiment of the invention, the pot 10 comprises the soaking coating 200 and the amorphous alloy coating 300 at the same time, so that the pot has the characteristics of less oil smoke, wear resistance and the like while being non-sticky, and the effect of lasting non-sticking is achieved.
A method of manufacturing a pot according to an embodiment of the present invention will be described in detail with reference to fig. 2.
Referring to fig. 2, the method of manufacturing a pot according to an embodiment of the present invention includes a step S100 of providing a body, a step S200 of forming a soaking coating, and a step S300 of forming an amorphous alloy coating.
In step S100, the provided body is substantially the same as the body described above, and thus, will not be described again.
The provided body can be a body which is subjected to pretreatment, and specifically, the inner surface of the body can be cleaned by using an alkaline solvent, cleaned by water, dried and then subjected to sand blasting treatment, so that the surface roughness of the inner surface of the body is increased, and the bonding strength between the body and a coating formed subsequently is improved.
In addition, the method can also comprise the step of preheating the body which is subjected to pretreatment, specifically, the body can be preheated to 250-350 ℃, the temperature difference between the body and the high-thermal-conductivity material can be reduced by preheating the body, the thermal stress between the substrate and a coating which is formed subsequently is reduced, and the quality and the bonding strength of the coating are improved.
In step S200, a soaking coat may be formed by thermally spraying a high thermal conductivity material onto a body under the following conditions: the speed of conveying the high-thermal conductivity coefficient material is 30-40g/min, the spraying distance is 120 mm-150 mm, the voltage is 50V-80V, the current is 500A-600A, the hydrogen pressure is 0.5 MPa-0.9 MPa, the flow is 2L/min-5L/min, the argon pressure is 0.5 MPa-0.9 MPa, and the flow is 30L/min-50L/min. The production efficiency can be improved by forming the soaking coat under the above conditions. Further, in order to prevent the coating from being overheated, the soaking coating may be formed by spraying the high thermal conductivity material several times per spraying thickness of 0.05 mm.
Further, after step S200, it is also possible to naturally cool the body on which the soaking coating is formed at room temperature, and purge floating ash on the surface with compressed air, and perform the subsequent step of forming the amorphous alloy coating when the temperature is reduced to 80 to 200 ℃ (for example, 80 to 120 ℃ or 150 to 200 ℃). Controlling the temperature within the above range after step S200 can increase the contact temperature between the sprayed material and the interface, reduce the stress caused by the difference in thermal expansion between the two materials to cause cracking of the coating, and increase the bonding strength between the soaking coating and the amorphous alloy coating. If the temperature is lower than 80 ℃, the effect is not good; if the temperature is too high, heat dissipation in the process of manufacturing the amorphous alloy coating is not facilitated, and thermal stress accumulation in the amorphous alloy coating can be caused, so that crystallization transformation or coating defects are generated.
In step S300, argon gas is injected into the vacuum chamber at a vacuum degree of 3Pa to 6X 10 3 Pa, forming an amorphous alloy coating by low pressure plasma spraying the at least one material onto the soaking coating under the following conditions: the transferred arc power is 30Kw, the arc current is 400A to 600A, the spraying distance is 140mm to 160mm, and the spraying angle is 60 degrees to 600 degreesAt 80 degrees, the speed for conveying the at least one material is 10g/min to 40g/min, the hydrogen pressure is 0.3MPa to 0.7MPa, and the flow is 5L/min to 8L/min. The production efficiency can be improved by forming the amorphous alloy coating under the above conditions. Further, in order to prevent the coating from being overheated, the amorphous alloy coating layer may be formed by spraying the above-described material several times at a spray thickness of 50 μm per spray.
Further, after step S300, the body on which the amorphous alloy coating layer is formed may be naturally cooled to room temperature.
In addition, the method can further comprise sanding the amorphous alloy coating after the amorphous alloy coating is formed. Specifically, the surface of the amorphous alloy coating layer may be subjected to a sanding treatment using, for example, 120-mesh sandpaper or a scouring pad, and the surface roughness after sanding is controlled to be in the range of Ra1 μm to 10 μm (for example, ra1 μm to 2 μm or Ra 3 μm to 10 μm). Within the range of the surface roughness, the coating has a certain oil absorption effect, so that the non-stick effect of the amorphous alloy coating can be enhanced.
Because the liquid metal in the amorphous alloy coating has a microstructure with amorphous phase disordered in long range and ordered in short range, the amorphous alloy coating has lower surface energy compared with common materials, and produces a non-sticky effect. The liquid metal in the amorphous alloy coating does not have the structure defects such as crystal boundary, twin crystal, lattice defect, dislocation, stacking fault and the like a crystal alloy, and has no heterogeneous phase, precipitate, segregation and other component fluctuation, thereby being a disordered structure, having high uniformity in chemistry, having no plastic deformation forms such as crystal boundary slippage and the like when being subjected to external force, and having higher strength. Therefore, the cookware provided by the embodiment of the invention has the characteristics of non-stick, wear resistance and the like.
In addition, set up soaking coating between metallic glass coating and body to can transmit heat fast, reduce the pan and appear local high temperature after being heated, delay the oil smoke and produce, promote the fried dish and experience.
The method of manufacturing a pot of the present invention will be described in detail with reference to examples.
The amorphous phase content is detected as follows:
1) Sample preparation: preparing a small sample of 10mm multiplied by 10mm by adopting a linear cutting method, and then ultrasonically cleaning and drying;
2) After phase analysis is carried out by XRD to detect an amorphous peak, a full spectrum fitting method is adopted to calculate to obtain the amorphous phase content.
Detection by metallographic microscopyPorosity, as measured by:
1) Sample preparation: preparing the sprayed coating into a sample with the diameter of 15 multiplied by 15mm by adopting a linear cutting method, and ultrasonically cleaning and drying the sample;
2) Placing the sample under a metallographic microscope to observe a cut section, wherein the magnification is 800 times, selecting an area with uniform tissue and clear picture to take a picture, and storing the picture;
3) And (3) importing the stored pictures into IQ material software, setting different contrast degrees on the pore area and the normal tissue, and calculating the area percentage of the pores by using the self-carrying function of the software so as to obtain the porosity of the sample.
The test method for the durable non-stick life is as follows:
and (3) performing a wear-resisting experiment according to a test method of 4.3.1 in the standard GB/T32095.2, performing a non-stickiness test of the fried egg according to 5.1.1 in the standard GB/T32095.2 after each 1000 times of grinding, recording the wear-resisting times, and finishing the continuous 2000 times of national standard grade III or obvious bottom exposure of the coating after the coating is worn through.
The oil smoke-free test method comprises the following steps:
and (4) recording the time of generating the oil smoke by referring to a test method in 6.2.1 of a standard QB/T4223-2011 lampblack-free frying pan.
Example 1:
cleaning oil stain on the surface of a pot body made of stainless steel by using an alkaline solvent, then, passing through clear water and drying, and then, carrying out sand blasting coarsening treatment; preheating the treated pot body to 250 ℃; an aluminum alloy having a particle size of 500 mesh was thermally sprayed onto the pan body under the following conditions to form a soaking coating having a thickness of 50 μm: the speed for conveying the material with high thermal conductivity coefficient is 30g/min, the spraying distance is 120mm, the voltage is 50V, and the electricity is suppliedThe flow is 500A, the hydrogen pressure is 0.5MPa, the flow is 2L/min, the argon pressure is 0.5MPa, and the flow is 30L/min, wherein the spraying is carried out for a plurality of times; the pot body was naturally cooled at room temperature, and floating ash on the surface was purged with compressed air, and when the temperature was reduced to 150 ℃, the pot body was placed in a spray chamber having a vacuum degree of 3Pa and being flushed with argon gas to 6 × 103Pa, and an Al-based amorphous alloy (specifically, zr) was passed through under the following conditions 65 -Ti 5 -Ni 10 -Al 10 -Cu 10 ) Low pressure plasma spraying onto the soaking coating to form an amorphous alloy coating with a thickness of 100 μm: the transferred arc power is 30Kw, the arc current is 400A, the spraying distance is 140mm, the spraying angle is 60 degrees, the speed of conveying materials is 10g/min, the hydrogen pressure is 0.3MPa, and the flow is 5L/min; and naturally cooling to room temperature, and sanding the amorphous alloy coating to obtain a surface with the roughness of Ra1 mu m.
The detection shows that the amorphous phase of the amorphous alloy coating accounts for 95% and the porosity is 2%. The lasting non-stick service life of the pot is 30000 times, and the oil smoke generation time is 180s.
Example 2:
cleaning greasy dirt on the surface of a pot body made of stainless steel by using an alkaline solvent, then passing through clear water and drying, and then carrying out sand blasting coarsening treatment; preheating the treated pan body to 250 ℃; an aluminum alloy having a particle size of 500 mesh was thermally sprayed onto the pan body under the following conditions to form a soaking coating having a thickness of 100 μm: the speed for conveying the high-thermal-conductivity-coefficient material is 30g/min, the spraying distance is 120mm, the voltage is 50V, the current is 500A, the hydrogen pressure is 0.5MPa, the flow is 2L/min, the argon pressure is 0.5MPa, and the flow is 30L/min, wherein the multiple spraying is carried out; naturally cooling the pan body at room temperature, blowing floating ash on the surface with compressed air, and placing the pan body in a vacuum degree of 3Pa and flushing argon gas to 6 × 10 when the temperature is reduced to 150 ℃ 3 Pa, and by spraying an Al-based amorphous alloy (specifically, zr) under the following conditions 65 -Ti 5 -Ni 10 -Al 10 -Cu 10 ) Low pressure plasma spraying onto the soaking coating to form an amorphous alloy coating with a thickness of 250 μm: rotating deviceThe arc moving power is 30Kw, the arc current is 400A, the spraying distance is 140mm, the spraying angle is 60 degrees, the speed of conveying materials is 10g/min, the hydrogen pressure is 0.3MPa, and the flow is 5L/min; and naturally cooling to room temperature, and sanding the amorphous alloy coating to obtain a surface with the roughness of Ra1 mu m.
The detection proves that the amorphous alloy coating has the amorphous phase content of 95% and the porosity of 2%. The lasting non-stick life of the pot is 42000 times, and the oil smoke generation time is 210s.
Comparative example 1:
spraying only the uniform heat layer: cleaning oil stain on the surface of a pot body made of stainless steel by using an alkaline solvent, then, passing through clear water and drying, and then, carrying out sand blasting coarsening treatment; preheating the treated pan body to 250 ℃; an aluminum alloy having a particle size of 500 mesh was thermally sprayed onto the pan body under the following conditions to form a soaking coating having a thickness of 100 μm: the speed for conveying the high-thermal-conductivity-coefficient material is 30g/min, the spraying distance is 120mm, the voltage is 50V, the current is 500A, the hydrogen pressure is 0.5MPa, the flow is 2L/min, the argon pressure is 0.5MPa, and the flow is 30L/min, wherein the multiple spraying is carried out; naturally cooling the pan body at room temperature, blowing floating ash on the surface by using compressed air, and sanding to the surface roughness Ra1um after cooling to the normal temperature.
The detection shows that the amorphous phase of the amorphous alloy coating accounts for 0 percent, and the porosity is 0 percent. The lasting non-stick service life of the pot is 0 time, and the oil smoke generation time is 120s.
Comparative example 2:
only spraying the amorphous alloy coating: cleaning greasy dirt on the surface of a pot body made of stainless steel by using an alkaline solvent, then passing through clear water and drying, and then carrying out sand blasting coarsening treatment; preheating the surface of the pot blank to 150 ℃, placing the pot body in a vacuum degree of 3Pa, and filling argon to 6 multiplied by 10 3 Pa, and by spraying an Al-based amorphous alloy (specifically, zr) under the following conditions 65 -Ti 5 -Ni 10 -Al 10 -Cu 10 ) Low-pressure plasma spraying is carried out on the pot blank to form an amorphous alloy coating with the thickness of 250 um: transferred arc power of 30Kw, electric arcThe current is 400A, the spraying distance is 140mm, the spraying angle is 60 degrees, the speed of conveying materials is 10g/min, the hydrogen pressure is 0.3MPa, and the flow is 5L/min; and naturally cooling to room temperature, and sanding the amorphous alloy coating to obtain a surface with the roughness of Ra1 mu m.
The detection proves that the amorphous phase of the amorphous alloy coating accounts for 98%, and the porosity is 2.5%. The lasting non-stick service life of the pot is 40000 times, and the oil smoke generation time is 130s.
As can be seen by comparing examples 1 and 2 with comparative example 1, examples 1 and 2 have significantly higher long-lasting non-stick life and fume generation time of pots than comparative example 1 due to having both amorphous alloy coating and soaking coating. As can be seen by comparing examples 1 and 2 with comparative example 2, examples 1 and 2 have significantly higher soot generation time of the pot than comparative example 2 due to having both the amorphous alloy coating and the soaking coating.
In conclusion, the pot provided by the embodiment of the invention has the soaking coating and the amorphous alloy coating, so that the pot has the characteristics of less oil smoke, wear resistance and the like while being not sticky, and the lasting and non-sticky effect is achieved.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims and their equivalents. The embodiments should be considered in descriptive sense only and not for purposes of limitation. Therefore, the scope of the invention is defined not by the detailed description of the invention but by the appended claims, and all differences within the scope will be construed as being included in the present invention.

Claims (10)

1. A cookware, the cookware comprising:
a body;
a soaking coating layer disposed on the body and comprising a high thermal conductivity material having a thermal conductivity of 150W/m.K to 500W/m.K; and
and the amorphous alloy coating is arranged on the soaking coating and comprises at least one material of Fe, zr, cu, al, mg, ti, sn, ni, pb, zn, nd, ga, mo, hf, cr, ca, Y, si, P, B and C.
2. The pot of claim 1, wherein the thickness of the soaking coating is 50 μm to 200 μm.
3. The cookware of claim 1, wherein the high thermal conductivity material comprises at least one of aluminum, aluminum alloy, silver alloy, copper and copper alloy, the high thermal conductivity material having a particle size of 1000 mesh to 200 mesh.
4. The cookware according to claim 1, wherein the amorphous alloy coating has an amorphous phase ratio of 60% -100%, a porosity of 2% -10%, and a thickness of 100 μm to 500 μm.
5. The cookware of claim 1, wherein the heat soaking coating and the amorphous alloy coating comprise materials with similar coefficients of thermal expansion.
6. A method of manufacturing a cookware, the method comprising the steps of:
providing a body;
forming a soaking coating on the body, wherein the soaking coating comprises a high-thermal-conductivity material with a thermal conductivity of 150W/mK to 500W/mK; and
and forming an amorphous alloy coating on the soaking coating, wherein the amorphous alloy coating comprises at least one material of Fe, zr, cu, al, mg, ti, sn, ni, pb, zn, nd, ga, mo, hf, cr, ca, Y, si, P, B and C.
7. The method of claim 6 further comprising pre-heating the body prior to the step of forming the soaking coating.
8. The method according to claim 6, wherein in the step of forming the soaking coating, the soaking coating is formed by thermally spraying the high thermal conductivity material onto the body under the following conditions: the speed for conveying the high-thermal-conductivity-coefficient material is 30-40g/min, the spraying distance is 120 mm-150 mm, the voltage is 50V-80V, the current is 500A-600A, the hydrogen pressure is 0.5 MPa-0.9 MPa, the flow rate is 2L/min-5L/min, the argon pressure is 0.5 MPa-0.9 MPa, and the flow rate is 30L/min-50L/min.
9. The method according to claim 6, wherein in the step of forming the amorphous alloy coating, argon gas is injected to 6 x 10 under a vacuum degree of 3Pa 3 Pa, forming an amorphous alloy coating by low pressure plasma spraying said at least one material onto the soaking coating under the following conditions: the transferred arc power is 30Kw, the arc current is 400A to 600A, the spraying distance is 140mm to 160mm, the spraying angle is 60 degrees to 80 degrees, the speed for conveying the at least one material is 10g/min to 40g/min, the hydrogen pressure is 0.3MPa to 0.7MPa, and the flow is 5L/min to 8L/min.
10. The method of claim 6, further comprising sanding the amorphous alloy coating after the step of forming the amorphous alloy coating.
CN202111049329.3A 2021-09-08 2021-09-08 Pot and method for manufacturing same Pending CN115181927A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104887060A (en) * 2015-06-25 2015-09-09 武汉苏泊尔炊具有限公司 Non-sticking cooker and manufacturing method thereof
CN105063546A (en) * 2015-09-09 2015-11-18 科盾工业设备制造（天津）有限公司 Method for thermally spraying amorphous alloy coating on heating surface in boiler
CN108330426A (en) * 2017-01-17 2018-07-27 佛山市顺德区美的电热电器制造有限公司 The preparation method of cooker, cooking apparatus component and cooker
CN110453171A (en) * 2019-09-10 2019-11-15 安徽工业大学 A kind of amorphous coating, matrix and its preparation process with the coating
CN111449485A (en) * 2019-01-18 2020-07-28 武汉苏泊尔炊具有限公司 Non-stick utensil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104887060A (en) * 2015-06-25 2015-09-09 武汉苏泊尔炊具有限公司 Non-sticking cooker and manufacturing method thereof
CN105063546A (en) * 2015-09-09 2015-11-18 科盾工业设备制造（天津）有限公司 Method for thermally spraying amorphous alloy coating on heating surface in boiler
CN108330426A (en) * 2017-01-17 2018-07-27 佛山市顺德区美的电热电器制造有限公司 The preparation method of cooker, cooking apparatus component and cooker
CN111449485A (en) * 2019-01-18 2020-07-28 武汉苏泊尔炊具有限公司 Non-stick utensil
CN110453171A (en) * 2019-09-10 2019-11-15 安徽工业大学 A kind of amorphous coating, matrix and its preparation process with the coating

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