CN114098411A - Production process of anticorrosive wear-resistant iron pan and iron pan produced by production process - Google Patents
Production process of anticorrosive wear-resistant iron pan and iron pan produced by production process Download PDFInfo
- Publication number
- CN114098411A CN114098411A CN202010905899.7A CN202010905899A CN114098411A CN 114098411 A CN114098411 A CN 114098411A CN 202010905899 A CN202010905899 A CN 202010905899A CN 114098411 A CN114098411 A CN 114098411A
- Authority
- CN
- China
- Prior art keywords
- coating
- layer
- iron pan
- temperature
- production process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
- B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
- B05D5/086—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers having an anchoring layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/586—No clear coat specified each layer being cured, at least partially, separately
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a production process of an anticorrosive wear-resistant iron pan and an iron pan produced by the process. According to the invention, through specific nitrocarburizing, chemical coating and nano coating processes, the compactness degree of a nitride layer can be optimally matched with a ceramic fluorite coating, and the non-stick effect and the non-stick coating anti-drop performance are best.
Description
Technical Field
The invention relates to the field of kitchen ware, in particular to a production process of an anticorrosive wear-resistant iron pan and an iron pan produced by the production process.
Background
The iron pan is a traditional kitchen tool for cooking food and is favored because of containing iron ions which are beneficial to human health. The iron pan is divided into a cast iron pan and a cooked iron pan according to different production processes; according to different treatment modes of the surface of an iron pan, the enamel porcelain process is carried out to lead the surface of the iron pan to be smooth, crystal, rustproof and easy to clean, or polytetrafluoroethylene and/or ceramic paint is sprayed on the inner surface of the iron pan to realize non-stick performance through chemical materials, or the surface of a raw iron pan is subjected to non-coating treatment to realize real stainless iron pan and physical anti-sticking.
As for the physical anti-sticking and anti-rust process, Chinese patent 2019105179256 discloses that a blank iron pan is firstly subjected to nitrocarburizing under the nitrogen-based atmosphere and then subjected to oxidation treatment to obtain the iron pan, the nitrocarburizing is carried out in two stages at 590-650 ℃, the two-stage nitrocarburizing time is at least 4 hours, so that an anti-rust layer which is more than or equal to 2um and mainly takes a black Fe3O4 film as a substrate is covered on the surface of an epsilon single-phase or epsilon + gamma' phase white bright layer of the nitrocarburizing layer, the corrosion resistance of the surface of the iron pan can be obviously improved, the surface of the iron pan can resist the corrosion of atmosphere, water vapor, oil, salt, sauce, vinegar, tea, sugar and various seasonings, and the surface of the uncoated wear-resistant and anti-rust iron pan after the performance is improved is subjected to photoetching lotus leaf effect treatment. On the other hand, because impurities exist on the surface of the raw material in the rolling process, the film thickness of the impurity-containing part of the fine iron pan in the nitriding process is weak, so that the corrosion resistance is poor, the fine iron pan is easy to corrode from the impurity part in the using process, and the corrosion point forms a potential difference on the surface to form an electrolytic corrosion reaction to accelerate the corrosion of the corrosion point, so that a sand hole is formed and an iron pan perforation phenomenon is formed.
For the anti-sticking and anti-rust process of the chemical coating, the most commonly used coating materials are Teflon and ceramic paint, and Chinese patent 201910810812.5 discloses spraying the modified ceramic paint to form a modified ceramic coating when the temperature is cooled to 180 ℃ of 120-; the modified fluororesin coating is formed by continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating, and although the invention overcomes the function superposition of two conventional non-stick coatings, the modified fluororesin coating is not easy to fall off any more, the microscopic surface of the coating is still in pores, and the cookware still has the perforation defect.
Chinese patent 201720110968.9 discloses an antirust pot, wherein the bottom of the pot adopts titanium alloy material as the base body, which ensures a certain corrosion resistance of the bottom of the pot, the carburized layer is obtained by glow plasma hydrogen-free carburization process, so that the Vickers hardness of the surface of the bottom of the pot reaches 650-800 HV1, then a layer of organosilicon high temperature resistant nano-coating with thickness of 10 μm is coated on the plasma carburized layer outside the bottom of the pot and the base body material inside the bottom of the pot (the edge of carburization is not coated), and then the coating is cured for 30min at the temperature of 320 ℃, which is beneficial to further improving the corrosion resistance of the pot. In the process, only the nano coating is coated on the inner side surface of the pot body, the inherent anti-corrosion performance of the organic silicon high-temperature resistant nano coating is utilized, and in addition, the coating process of the nano coating cannot be directly used in a chemical coating anti-sticking and anti-rust process.
Aiming at the technical problems, the invention provides a production process of an anticorrosive wear-resistant iron pan, which is characterized in that the anticorrosive wear-resistant iron pan is obtained through simple nitrocarburizing, chemical coating and nano coating processes.
Disclosure of Invention
The invention provides a production process of an anticorrosive wear-resistant iron pan, aiming at the technical problem that a non-stick pan is easy to perforate in the prior art, and the anticorrosive wear-resistant iron pan is obtained through specific nitrocarburizing, chemical coating and nano coating processes, and the production time of the iron pan is greatly shortened.
The purpose of the invention is mainly realized by the following technical scheme:
the invention provides a production process of an anticorrosive wear-resistant iron pan, which comprises the following steps:
s1, die-casting and forming the pot blank;
and S2, grinding.
The residues such as residues, particles, oxide scales and the like on the surface are removed through polishing the inner surface and the outer surface, so that the surface is bright and smooth and does not cut hands.
S3 gas soft nitriding treatment
And hoisting the polished pot blank into a nitriding furnace to carry out gas soft nitriding, wherein the gas soft nitriding is carried out by carrying out low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 560-570 ℃, and tests show that the hardness value of the nitrided layer at the temperature is the highest, the nitriding time is generally 2-2.5 hours and exceeds 2.5 hours, and the depth of the nitrided layer is slowly increased along with the time. The outermost layer of the surface of the pot blank after gas soft nitriding can obtain a white bright layer with the thickness of more than 10 micrometers, the white bright layer is composed of an epsilon phase, a gamma 'phase and a nitrogenous cementite Fe3(C, N), and the sublayer is a diffusion layer which is mainly composed of a gamma' phase and an epsilon phase.
S4 surface oxidation treatment
S5 spraying a ceramic fluorite coating on the inner surface of the pot body to obtain a ceramic fluorite coating
Spraying the modified ceramic coating to form a modified ceramic coating when the temperature of the pot body after surface oxidation treatment is reduced to 180 ℃ at the temperature of 120-; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating.
S6 surface crystallization treatment
The nano coating is coated at the temperature of 280 plus 300 ℃ to form a crystallization layer on the surface of the ceramic fluorite coating, and the nano coating can be fully dissolved and permeated into pores on the surface at the temperature, and it needs to be noted that if the temperature is too high, the crystallization layer volatilizes, the brightness is lacked, the temperature is too low, the coating is not completely decomposed, the greasy feeling can be generated on the surface of the pot body, and the brightness can also be influenced. And (3) polishing the sintered pot blank on 1460 rpm equipment by using 240-mesh scouring cloth, and further sealing the surface of the crystallized layer to obtain the pot with bright and uniform surface and stable antirust and anticorrosive performance.
The invention also provides the iron pan produced by the production process, which comprises a cast iron pan blank, wherein the inner surface of the cast iron pan blank is sequentially provided with a nitriding layer, an oxidizing layer, a polyfluorite coating layer and a crystallizing layer from inside to outside.
Further, the nitride layer is 10 μm or more.
Further, the oxide layer is 1-3 microns.
Further, the crystallization layer is 3-5 microns.
Furthermore, a nitriding layer, an oxidizing layer and a crystallizing layer are sequentially arranged on the outer surface of the cast iron pan blank outwards.
The invention has the beneficial effects that:
1. compared with the prior art of nitrocarburizing under an austenite atmosphere, the invention has the advantages that the nitriding treatment effect on the surface of the pot blank is better at a relatively low temperature in a shorter time, the compactness of the nitriding layer can be optimally matched with the ceramic fluorite coating, so that the ceramic fluorite coating has optimal adhesive force on the surface of the nitriding layer, and the ceramic fluorite coating has optimal non-stick effect and optimal anti-falling performance without sticking the coating.
2. Furthermore, the nano coating is coated at the temperature of 280 plus 300 ℃ to form a crystallization layer on the surface of the ceramic fluorite coating, so that the hole sealing is carried out on the surface of the pot body, acidic substances can be completely prevented from entering surface air holes to corrode the cast iron pot, meanwhile, the surface layers are matched with each other to form a highly compact surface layer on the whole, the wear resistance is further improved, and the non-stick coating is prevented from falling off. Meanwhile, if the temperature is too high, the crystallization layer volatilizes, the brightness is lacked, the temperature is too low, the coating is not completely decomposed, the greasy feeling is generated on the surface of the pot body, and the brightness is also influenced.
3. Compared with the conventional process of directly coating the nano coating on the surface of the iron pan, the crystallized layer formed by the nano coating is permeated in air holes and is not a conventional coating attached to the surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments.
Example 1
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 560 ℃, the nitriding time is generally 2 hours, a white layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ for 120-fold treatment to form a modified ceramic coating, the surface of the modified ceramic coating is sintered, the sintering temperature is 300 ℃ for 240-fold treatment, and the sintering time is 6 minutes; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 280 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 rpm equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 2
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 560 ℃, the nitriding time is generally 2 hours, a white layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ for 120-fold treatment to form a modified ceramic coating, the surface of the modified ceramic coating is sintered, the sintering temperature is 300 ℃ for 240-fold treatment, and the sintering time is 6 minutes; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 300 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 r/min equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 3
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 570 ℃, the nitriding time is generally 2 hours, a white bright layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ for 120-fold glass melting, the surface of the modified ceramic coating is sintered, the sintering temperature is 300 ℃ for 240-fold glass melting, and the sintering time is 6 minutes; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 280 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 rpm equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 4
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 570 ℃, the nitriding time is generally 2 hours, a white bright layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ for 120-fold glass melting, the surface of the modified ceramic coating is sintered, the sintering temperature is 300 ℃ for 240-fold glass melting, and the sintering time is 6 minutes; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 300 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 r/min equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 5
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 560 ℃, the nitriding time is generally 2.5 hours, a white layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed to form a modified ceramic coating when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ of 120-; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 300 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 r/min equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 6
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 560 ℃, the nitriding time is generally 2.5 hours, a white layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed to form a modified ceramic coating when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ of 120-; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 280 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 rpm equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 7
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 570 ℃, the nitriding time is generally 2.5 hours, a white bright layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ of 120-; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 280 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 rpm equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 8
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 570 ℃, the nitriding time is generally 2.5 hours, a white bright layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ of 120-; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 300 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 r/min equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 9
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 565 ℃, the nitriding time is generally 2.5 hours, a white bright layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed to form a modified ceramic coating when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ of 120-; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 300 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 r/min equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 10
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 565 ℃, the nitriding time is generally 2 hours, a white bright layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ for 120-fold treatment to form a modified ceramic coating, the surface of the modified ceramic coating is sintered, the sintering temperature is 300 ℃ for 240-fold treatment, and the sintering time is 6 minutes; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 300 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 r/min equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 11
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 565 ℃, the nitriding time is generally 2 hours, a white bright layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ for 120-fold treatment to form a modified ceramic coating, the surface of the modified ceramic coating is sintered, the sintering temperature is 300 ℃ for 240-fold treatment, and the sintering time is 6 minutes; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 280 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 rpm equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 12
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 565 ℃, the nitriding time is generally 2.3 hours, a white bright layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed to form a modified ceramic coating when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ of 120-; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at the temperature of 280 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 rpm equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive properties.
Example 13
Firstly, casting a pot blank by casting molten iron with the temperature of 2000 ℃ in a compression mode, polishing the inner surface and the outer surface of the pot blank to remove residues, particles, oxide skin and the like on the surface to enable the surface to be bright and smooth without cutting hands, hoisting the polished pot blank into a nitriding furnace to perform gas soft nitriding, wherein the gas soft nitriding is to perform low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, formamide or triethanolamine is used as a co-permeation medium, and the generated active nitrogen and carbon atoms permeate into the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained. The gas soft nitriding temperature is 565 ℃, the nitriding time is generally 2.3 hours, a white bright layer with the diameter of more than 10 microns can be obtained on the outermost layer of the surface of the pot blank after the gas soft nitriding, then the surface oxidation treatment is carried out, the modified ceramic coating is sprayed to form a modified ceramic coating when the temperature of the pot body after the surface oxidation treatment is reduced to 180 ℃ of 120-; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating. And (3) brushing nano paint at 290 ℃ to form a crystallized layer on the surface of the ceramic fluorite coating, then polishing by using 240-mesh scouring pad on 1460 r/min equipment, and further sealing holes on the surface of the crystallized layer to obtain the cookware with bright and uniform surface and stable antirust and anticorrosive performance.
In addition, the invention provides a comparative example test, which mainly adjusts the gas soft nitriding temperature T1, the nitriding time H and the nano paint brushing temperature T2, and the results of the quality test of the iron pan products when the gas soft nitriding temperature, the nitriding time and the nano paint brushing temperature are changed in the specific examples and the comparative examples are shown in the following table 1.
Tests show that the hardness value of the nitrided layer at the temperature is highest, the nitriding time is generally 2-2.5 hours and exceeds 2.5 hours, the nitrided layer depth is slowly increased along with the time, and the process cost is wasted instead of increasing the performance of the pan. If the temperature is too high, the crystallized layer volatilizes, lacks the brightness of light, and if the temperature is too low, the coating is not completely decomposed, the surface of the pot body can generate greasy feeling, and the brightness can also be influenced. Compared with the conventional process of directly coating the nano coating on the surface of the iron pan, the crystallized layer formed by the nano coating is permeated in air holes and is not a conventional coating attached to the surface.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.
Claims (10)
1. A production process of an anticorrosive wear-resistant iron pan is characterized by comprising the following steps: the method comprises the following steps:
s1, die-casting and forming the pot blank;
s2 grinding
The residues such as residues, particles, oxide scales and the like on the surface are removed through polishing the inner surface and the outer surface, so that the surface is bright and smooth and does not cut hands;
s3 gas soft nitriding treatment
Hoisting the polished pot blank into a nitriding furnace to carry out gas soft nitriding, wherein the gas soft nitriding is to carry out low-temperature nitrogen and carbon co-permeation in an atmosphere containing active nitrogen and carbon atoms, and the generated active nitrogen and carbon atoms permeate the pot blank through diffusion, so that a nitrogen-carbon co-permeation layer mainly containing nitrogen is obtained, the gas soft nitriding temperature is 560-570 ℃, and the nitriding time is generally 2-2.5 hours;
s4 surface oxidation treatment
S5 spraying a ceramic fluorite coating on the inner surface of the pot body to obtain a ceramic fluorite coating
S6 surface crystallization treatment
And brushing the nano coating at the temperature of 280-300 ℃ to form a crystallization layer on the surface of the ceramic fluorite coating.
2. The production process of the corrosion-resistant and wear-resistant iron pan as claimed in claim 1, wherein the production process comprises the following steps: in the step S3, formamide or triethanolamine is used as a co-permeation medium during gas soft nitriding.
3. The production process of the corrosion-resistant and wear-resistant iron pan as claimed in claim 1, wherein the production process comprises the following steps: in the step S4, the step of spraying the ceramic fluorite coating on the inner surface of the pot body to obtain the ceramic fluorite coating specifically comprises the following steps: spraying the modified ceramic coating to form a modified ceramic coating when the temperature of the pot body after surface oxidation treatment is reduced to 180 ℃ at the temperature of 120-; and continuously spraying the modified fluororesin on the outer surface of the modified ceramic coating to form a modified fluororesin coating, thereby forming a ceramic fluorite coating.
4. The production process of the corrosion-resistant and wear-resistant iron pan as claimed in claim 1, wherein the production process comprises the following steps: the outermost layer of the surface of the pot blank can obtain a white bright layer of more than 10 microns after gas soft nitriding.
5. The production process of the corrosion-resistant and wear-resistant iron pan as claimed in claim 1, wherein the production process comprises the following steps: and (3) polishing 240-mesh scouring pad on 1460 r/min equipment after the nano coating is coated, and further sealing the surface of the crystallization layer.
6. The iron pan produced by the production process of the corrosion-resistant wear-resistant iron pan according to any one of claims 1 to 5, which is characterized in that: the iron pan comprises a cast iron pan blank, wherein a nitriding layer, an oxidizing layer, a polyfluorite coating layer and a crystallizing layer are sequentially arranged on the inner surface of the cast iron pan blank from inside to outside.
7. The iron pan of claim 6, wherein: the nitride layer is more than 10 microns.
8. The iron pan of claim 6, wherein: the oxide layer is 1-3 microns.
9. The iron pan of claim 6, wherein: the crystallization layer is 3-5 microns.
10. The iron pan of claim 6, wherein: the outer surface of the cast iron pan blank is provided with a nitriding layer, an oxidizing layer and a crystallizing layer in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010905899.7A CN114098411A (en) | 2020-09-01 | 2020-09-01 | Production process of anticorrosive wear-resistant iron pan and iron pan produced by production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010905899.7A CN114098411A (en) | 2020-09-01 | 2020-09-01 | Production process of anticorrosive wear-resistant iron pan and iron pan produced by production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114098411A true CN114098411A (en) | 2022-03-01 |
Family
ID=80360439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010905899.7A Pending CN114098411A (en) | 2020-09-01 | 2020-09-01 | Production process of anticorrosive wear-resistant iron pan and iron pan produced by production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114098411A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4482399A (en) * | 1982-08-26 | 1984-11-13 | Toyo Kogyo Co., Ltd. | Nitrided cast iron product and method for manufacturing the same |
| CN103783999A (en) * | 2014-01-16 | 2014-05-14 | 武义瑞普厨具有限公司 | Novel composite cooker and manufacturing method thereof |
| CN206761361U (en) * | 2017-02-06 | 2017-12-19 | 江西吉事达厨房用品有限公司 | A kind of antirust pot |
| CN207461955U (en) * | 2017-06-13 | 2018-06-08 | 江西吉事达厨房用品有限公司 | A kind of oil-control pan bodies |
| CN110257761A (en) * | 2019-06-14 | 2019-09-20 | 武汉汇九厨具科技有限公司 | A kind of not viscous iron pan of method of no-coating abrasion-proof antirust and its manufacturing process |
| CN110432786A (en) * | 2019-08-29 | 2019-11-12 | 武汉安在厨具有限公司 | A kind of non-sticking cooking utensils production technology with pottery fluorite coating |
| CN210748813U (en) * | 2019-08-27 | 2020-06-16 | 武汉安在厨具有限公司 | Pottery fluorite on-stick iron pan |
-
2020
- 2020-09-01 CN CN202010905899.7A patent/CN114098411A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4482399A (en) * | 1982-08-26 | 1984-11-13 | Toyo Kogyo Co., Ltd. | Nitrided cast iron product and method for manufacturing the same |
| CN103783999A (en) * | 2014-01-16 | 2014-05-14 | 武义瑞普厨具有限公司 | Novel composite cooker and manufacturing method thereof |
| CN206761361U (en) * | 2017-02-06 | 2017-12-19 | 江西吉事达厨房用品有限公司 | A kind of antirust pot |
| CN207461955U (en) * | 2017-06-13 | 2018-06-08 | 江西吉事达厨房用品有限公司 | A kind of oil-control pan bodies |
| CN110257761A (en) * | 2019-06-14 | 2019-09-20 | 武汉汇九厨具科技有限公司 | A kind of not viscous iron pan of method of no-coating abrasion-proof antirust and its manufacturing process |
| CN210748813U (en) * | 2019-08-27 | 2020-06-16 | 武汉安在厨具有限公司 | Pottery fluorite on-stick iron pan |
| CN110432786A (en) * | 2019-08-29 | 2019-11-12 | 武汉安在厨具有限公司 | A kind of non-sticking cooking utensils production technology with pottery fluorite coating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102191452B (en) | Coloured austenite stainless steel material with high corrosion resistance and high hardness and production method thereof | |
| US4881983A (en) | Manufacture of corrosion resistant components | |
| US6210807B1 (en) | Surface oxidation of a titanium or titanium alloy article | |
| CN108504975A (en) | Stainless iron pot acid resistant material and preparation method thereof, stainless container made of iron | |
| CN213757796U (en) | Corrosion-resistant wear-resistant iron pan | |
| JP2017036509A (en) | Manufacturing method of nitrided steel member | |
| CN110257761B (en) | Non-coating wear-resistant rust-proof non-stick iron pan and manufacturing process thereof | |
| CN1333102C (en) | Titanium-base decoration member and method for curing the same | |
| US9382607B2 (en) | Composite article and method | |
| CN114098411A (en) | Production process of anticorrosive wear-resistant iron pan and iron pan produced by production process | |
| Oguri et al. | Effect of N2-to-TiCl4 flow rate ratio on the properties of TiN coatings formed by dc discharge plasma-assisted chemical vapor deposition | |
| CN111094828B (en) | Method for producing black-cored malleable cast iron member formed by plating, and black-cored malleable cast iron member and pipe joint formed by plating | |
| CN106702312A (en) | Method for treating iron-based pan and iron-based pan | |
| RU2413448C2 (en) | Easy-to-clean hob and electrical household appliance with such hob | |
| CN112410722B (en) | Alpha + beta type titanium alloy based on cold forming composite low-temperature nitriding treatment and nitride layer forming method thereof | |
| KR20150138870A (en) | Method for high temperature gas nitriding of titanium alloy | |
| YZ et al. | Surface hardening treatment for CP titanium and titanium alloys in use of Ar–5% CO gas | |
| CN107109665A (en) | Clock and watch screw and its manufacture method | |
| JP3064909B2 (en) | Carburized hardware and its manufacturing method | |
| US11773494B2 (en) | Modified oxide surface treatment layer for alloys and corresponding methods | |
| JP4777558B2 (en) | Surface-curing material and manufacturing method thereof | |
| CN218500517U (en) | Titanium composite cooker with surface treatment layer | |
| KR101844575B1 (en) | Gold color steel plate and manufacturing method thereof | |
| CN114182197A (en) | Method for manufacturing cutting tool and cutting tool | |
| JP2009035761A (en) | High-hardness and wear resistant component, and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220301 |