CN111760771A - Processing method of non-stick pan with concave grains - Google Patents
Processing method of non-stick pan with concave grains Download PDFInfo
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- CN111760771A CN111760771A CN202010640704.0A CN202010640704A CN111760771A CN 111760771 A CN111760771 A CN 111760771A CN 202010640704 A CN202010640704 A CN 202010640704A CN 111760771 A CN111760771 A CN 111760771A
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- 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
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/025—Vessels with non-stick features, e.g. coatings
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- 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
- B05D3/02—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 by baking
- B05D3/0209—Multistage baking
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- 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
- B05D3/02—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 by baking
- B05D3/0254—After-treatment
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- 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
- B05D3/02—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 by baking
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
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- 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
- B05D3/10—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 by other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- 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
- B05D3/10—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 by other chemical means
- B05D3/107—Post-treatment of applied coatings
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- 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
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/065—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects having colour interferences or colour shifts or opalescent looking, flip-flop, two tones
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
- B21D51/22—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like pots, e.g. for cooking
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
Abstract
The invention provides a method for processing a non-stick pan with concave lines, which comprises the steps of sizing, exposing, developing, hardening, chemically etching, spraying coating, sintering and removing the coating, chemically polishing, pressing and forming or sizing, exposing, developing, hardening, chemically etching, spraying coating, sintering, pressing and forming, removing the coating and chemically polishing to obtain a metal pan body with a coating partially coated on the surface. The invention does not need the step of removing the non-stick layer on the raised surface by mechanical polishing, effectively protects the non-stick performance of the coating, has higher product rate of processing and is suitable for processing non-stick pans with special concave patterns.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the field of cooking appliances, and particularly relates to a processing method of a non-stick pan with concave grains.
[ background of the invention ]
In order to realize the non-stick function, aluminum alloy and stainless steel cookers on the market generally adopt a method of completely coating the surface with non-stick paint, or processing a plurality of concave-convex patterns on the surface, and removing the coating layer of the convex part and exposing the metal layer by a mechanical method after completely coating the paint, so as to realize the local coating of the non-stick paint. The food is suspended in the concave-convex texture to generate the steam anti-sticking film in the cooking process, so that the food not only has a reduced contact surface and is effectively anti-sticking, but also has a relatively longer service life, and is more popular in the market.
The non-stick cookware partially coated with non-stick paint is made by a method disclosed in patent CN103142132A, and comprises the following steps: a. surface pattern treatment: forming concave-convex lines with preset patterns in a preset area on the surface of the stainless steel plate by a chemical etching or engraving or rolling method; b. and (3) stretching and forming: stretching and forming the stainless steel plate into a pot body, and enabling the preset area to be located in the working area in the formed pot body; c. spraying non-stick paint: spraying non-stick paint on a preset area of the inner surface of the pot body to enable the preset area of the inner surface of the pot body to be coated with the non-stick coating; d. polishing: and mechanically polishing the preset area of the inner surface of the pot body, removing the non-stick coating on the convex surface in the concave-convex grains, and keeping the non-stick coating on the concave surface in the concave-convex grains.
However, the manufacturing method has the defects that the non-stick layer on the raised surface is removed through mechanical polishing, the coating is easy to damage in the polishing process, the non-stick performance is reduced, meanwhile, the working procedure processing time is long, the polishing is easy to be uneven, the energy consumption is high, the cost is high, and effective processing of some concave grains cannot be realized.
[ summary of the invention ]
The invention provides a processing method of a non-stick pan with concave lines, which does not need a step of removing a non-stick layer on a convex surface by mechanical polishing, effectively protects the non-stick performance of a coating, has higher product rate of processing, and is suitable for processing the non-stick pan with special concave lines.
The technical solution of the invention is as follows:
the processing method of the non-stick pan with the concave grains is characterized by comprising the following steps of:
a1, coating photosensitive resist diluted by alcohol on the surface of a metal plate, drying, exposing and developing to form a preset pattern, baking to harden:
a2, carrying out chemical etching on the surface of the exposed metal plate by spraying etching agent to form a structure with concave grains on the surface of the metal plate;
a3, spraying the prepared coating to the whole surface of the metal plate obtained by the A2 treatment in sequence;
a4, sintering and stripping the coated metal plate through the following temperature zones: an initial volatilization section T1 for volatilizing the water and volatile substances in the coating; in the second high-temperature sintering section T2, the coating layer is solidified, and the photosensitive adhesive layer is sintered and coked; a three-region crosslinking stabilizing section T3, wherein organic matters in the coating form crosslinking; the four-section low-temperature cooling section T4 is expanded with heat and contracted with cold to peel off the coked photosensitive adhesive layer; preferably, the initial volatilization section T1 of the first zone is 150-300 ℃; the second-zone high-temperature sintering section T2 is 420-480 ℃; the three-region cross-linking stable section T3 is 350-420 ℃; the four-zone low-temperature cooling section T4 is air-cooled to below 60 ℃ at room temperature;
a5, carrying out chemical polishing on the metal plate obtained in the step A4, and removing yellow marks and/or an oxide layer formed by sintering;
and A6, pressing the metal plate obtained in the step A5 into a shape required by a utensil to obtain the non-stick pan with the non-stick coating in the concave grains.
The processing method of the non-stick pan with the concave grains is characterized by comprising the following steps of:
b1, coating the photosensitive resist diluted by alcohol on the surface of the metal plate, drying, exposing and developing to form a preset pattern, baking to harden:
b2, carrying out chemical etching on the surface of the exposed metal plate by spraying an etching agent to form a structure with concave grains on the surface of the metal plate;
b3, spraying the prepared coating to the whole surface of the metal plate obtained by the S2 treatment in sequence; (ii) a
B4, sintering the coated metal plate through the following multi-temperature zones: an initial volatilization section T1 for volatilizing the water and volatile substances in the coating; in the second high-temperature sintering section T2, the coating layer is solidified, and the photosensitive adhesive layer is sintered and coked; a three-region crosslinking stabilizing section T3, wherein organic matters in the coating form crosslinking; naturally cooling the furnace outlet to keep the coating film layer complete; preferably, the initial volatilization section T1 of the first zone is 150-200 ℃; the second-zone high-temperature sintering section T2 is 430-450 ℃; the three-region cross-linking stable section T3 is 380-390 ℃;
b5, extruding the metal plate obtained in the step S4 through a die to form a utensil shape, enabling the photosensitive adhesive layer reserved on the surface of the smooth metal plate to lose adhesive force, and removing the coating covering the exposed pattern area of the metal plate and reserved above the photosensitive adhesive layer after demolding;
and B6, performing chemical polishing on the metal plate obtained in the step S5, and removing yellow marks and/or an oxide layer formed by sintering to obtain the non-stick pan with the non-stick coating in the concave grains.
Preferably, the relief pattern corresponding to the concave grains is a geometric pattern which is regularly arranged and can be infinitely arranged outwards, the geometric pattern comprises lines and/or points, and the basic pattern of the geometric pattern is an isosceles triangle, or a pattern formed by rotating a broken line formed by two equal-length line segments arranged at an included angle of 120 degrees around an origin at 120 degrees, or a pattern formed by rotating a Y-shaped line formed by three equal-length line segments arranged at an included angle of 120 degrees around the origin at 60 degrees and a pattern formed by rotating an arc around the periphery of the Y-shaped line at 60 degrees.
Preferably, the dilution volume ratio of the alcohol to the photosensitive glue is (0.8-1.15): 1, the drying temperature of the photosensitive glue is 80-90 ℃, the drying time of the photosensitive glue is 15-30 minutes, the exposure time is 60-120 seconds, a developing reagent formed by an industrial sodium carbonate solution is adopted for development, the developing temperature is 30-45 ℃, the baking hardening temperature is 135-180 ℃, and the time is 15-25 minutes.
Preferably, the predetermined pattern is set by a negative exposure development method.
Preferably, the chemical etching is carried out until the roughness Ra is 0.8-6.3 and the etching depth is not more than 0.8 mm.
Preferably, the etching agent is ferric trichloride in a mass ratio of 1:10 (0.03-0.08): water: hydrochloric acid, the concentration of the solution is 38-40 DEG Be, the temperature of the solution is 30-45 ℃, and the spraying pressure is 1.2-2.8 kg/cm2。
Preferably, the chemical polishing solution is a mixed solution of sodium hydroxide and sodium nitrate, the total alkalinity is 18-35%, and the temperature is 90-110 ℃.
The invention has the following beneficial effects:
1) according to the invention, the local coating is removed by stripping through a developing method, then the chemical polishing process is carried out, and the local unnecessary coating is removed through multi-temperature zone sintering, so that the situation that the non-stick layer on the metal surface is removed by using a physical method of mechanical polishing to realize the local coating effect of the concave-convex surface is avoided, the physical damage such as scraping, scratching, bumping and the like to the surface of the coating needing to be reserved is avoided, and the non-stick performance of the coating is effectively protected;
2) the invention adopts an exposure and development method to set the graph, has the graph precision of a photo level, can manufacture fine graph elements (points, lines and surfaces), and can reach the graph precision of 0.02 mm; meanwhile, the developing adhesive layer is reserved before spraying, so that the pattern precision of the sintered coating can be kept consistent with the developing pattern precision;
3) the invention adopts chemical etching to the exposed metal surface without the photosensitive glue to form a rough surface with concave grains, the rough area is controllable, the roughness is uniform and consistent, the precision is higher, the sand blasting treatment (the sand blasting treatment also carries out the rough treatment to the non-coating area to cause the difficulty in later-stage coating removal) is avoided, the processing cost is reduced, and the processing efficiency and the performance index of the product are improved.
[ description of the drawings ]
FIG. 1 is a schematic flow chart of a method according to the first embodiment;
FIG. 2 is a schematic side sectional view of the structure of the product before development in one step S1 of the embodiment;
FIG. 3 is a schematic side sectional view of the structure of the product after development in one step S1 of the example;
FIG. 4 is a schematic side sectional view of a structure of a product obtained in one step S2 of the embodiment;
FIG. 5 is a schematic side sectional view of a structure of a product obtained in one step S3 of the embodiment;
FIG. 6 is a schematic side sectional view of a structure of a product obtained in one step S4 of the embodiment;
FIG. 7 is a schematic front view of a product obtained according to an embodiment;
FIG. 8 is an enlarged view of portion A of FIG. 7;
FIG. 9 is a schematic flow chart of a method according to a third embodiment;
FIG. 10 is a schematic side sectional view of a product structure before development in three step S1 of the example;
FIG. 11 is a schematic side sectional view of a structure of a product after development in the three step S1 of the example;
FIG. 12 is a schematic side sectional view of a structure of a product obtained in the three step S2 of the embodiment;
FIG. 13 is a schematic side sectional view of a structure of a product obtained in the three step S3 of the example;
FIG. 14 is a schematic side sectional view of a structure of a product obtained in the three step S4 of the example;
FIG. 15 is a schematic front view of a product obtained in accordance with one embodiment;
FIG. 16 is an enlarged view of detail A of FIG. 15;
description of the labeling: 1, a metal plate; 2, exposing a pattern area; 3, a non-exposed pattern area; 7, a photosensitive adhesive layer; 8, concave-convex rough surface; 9, etching the area coating; 10, coating above the photosensitive adhesive layer.
[ detailed description ] embodiments
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples.
The following examples are not provided to limit the scope of the present invention, nor are the steps described to limit the order of execution, and the directions described are limited to the drawings. Modifications of the invention which are obvious to those skilled in the art in view of the prior art are also within the scope of the invention as claimed.
Example one
A processing method of a non-stick pan with concave grains comprises the following steps:
a1-1, sizing: coating a photosensitive adhesive layer on the surface of a smooth and clean metal plate 1, wherein the photosensitive adhesive is diluted by alcohol at a ratio of 0.8:1 to 1.15:1, the drying temperature is 83-87 ℃, and the drying time is 15-30 minutes;
a1-2, exposure: carrying out exposure in a vacuum exposure machine for 60-120 seconds;
a1-3, developing: developing in a developing machine, wherein a photosensitive adhesive layer is reserved in an exposed pattern area on the surface of a metal plate by using a traditional film photographic dark box developing method, the metal surfaces of other areas are exposed, and a developing agent (industrial sodium carbonate: water is about 1:10) is used at the developing temperature of 30-45 ℃;
a1-4, firm: the baking temperature is 135-180 ℃, and the baking time is 15-25 minutes;
a2, chemical etching: an etching agent (ferric trichloride: water: hydrochloric acid in a mass ratio of 1:10 (0.03-0.08)), a solution concentration of 38-40 DEG Be, a solution temperature of 30-45 ℃, and a spray pressure of 1.2-2.8 kg/cm2The surface of the bare metal plate can be etched to the roughness Ra0.8-Ra6.3 and the etching depth can reach 0.8mm by adjusting the proportion of the medicament and the spraying pressure, so that the bare metal forms a surface structure with concave grains;
a3, spray coating: the bottom coating and the surface coating can be sprayed in sequence; drying the bottom coating (sold in the market) at the temperature of 125-150 ℃, sequentially spraying the middle coating (sold in the market) and the surface coating (sold in the market) after drying the bottom coating, and sintering in a baking oven after surface drying;
a4, sintering and removing film: the metal plate coated with the coating is subjected to film removing treatment by a sintering procedure comprising the following temperature zones: the initial volatilization section of the first zone is 180-200 ℃, the high-temperature sintering section of the second zone is 430-445 ℃, the coating layer is sintered and solidified, the photosensitive adhesive layer 7 is kept for sintering and coking, the cross-linking stable section of the third zone is 400-420 ℃, the furnace outlet is immediately and forcefully cooled to about 60 ℃ by air, and the expansion caused by heat and the contraction caused by cold are intensified; sintering at high temperature to make the photosensitive adhesive layer reserved on the surface of the smooth metal plate lose adhesive force, the coating in the etching area is tightly combined with the etched concave-convex rough surface, and the coating covering the exposed pattern area of the metal plate and reserved above the photosensitive adhesive layer can be easily removed after the metal plate is taken out of the furnace, so that the smooth metal surface area is exposed;
a5, chemical polishing: chemically polishing the exposed metal surface to remove yellow marks, oxide layers and the like formed by sintering; the chemical polishing process comprises the following steps: workpiece → chemical polishing → cleaning → nitric acid light extraction → cleaning → hot water soaking → drying, wherein the chemical polishing solution is made of sodium hydroxide and sodium nitrate, the total alkalinity is 18-35%, the temperature is 90-110 ℃, the polishing time is 2-10 seconds, the workpiece after chemical polishing needs to be cleaned by two flows of clean water, the water quality is kept clean, and the hot water soaking temperature is more than 80 ℃;
a6, press forming: and pressing the metal plate 1 obtained from A5 into a shape required by an appliance to obtain a metal pot body with the surface partially coated with the coating.
The metal appliance manufactured by the method is shown in figures 7 and 8, the convex patterns corresponding to the concave patterns are regularly arranged and outwards infinitely arranged geometric patterns, the basic patterns of the geometric patterns are formed by rotating a broken line formed by two segments with equal length and arranged at an included angle of 120 degrees around an original point by 120 degrees, and the broken line is circularly arranged along three directions. .
Example two
A method for achieving a topical application of a coating to a surface of a metal cooking appliance, comprising the steps of:
a1-1, sizing: coating a photosensitive adhesive layer on the surface of a smooth and clean metal plate 1, wherein the photosensitive adhesive is diluted by alcohol at a ratio of 0.8:1 to 1.15:1, the drying temperature is 83-87 ℃, and the drying time is 15-30 minutes;
a1-2, exposure: carrying out exposure in a vacuum exposure machine for 60-120 seconds;
a1-3, developing: developing in a developing machine, wherein a photosensitive adhesive layer is reserved in an exposed pattern area on the surface of a metal plate by using a traditional film photographic dark box developing method, the metal surfaces of other areas are exposed, and a developing agent (industrial sodium carbonate: water is about 1:10) is used at the developing temperature of 30-45 ℃;
a1-4, firm: the baking temperature is 135-180 ℃, and the baking time is 15-25 minutes;
a2, chemical etching: an etching agent (ferric trichloride: water: hydrochloric acid ratio 1:10 (0.03-0.08)), a solution concentration of 38-40 DEG Be, a solution temperature of 30-45 ℃, and a spray pressure of 1.2-2.8 kg/cm2The surface of the bare metal plate can be etched to the roughness Ra0.8-Ra6.3 and the etching depth can reach 0.6mm by adjusting the proportion of the medicament and the spraying pressure, so that the bare metal forms a surface structure with concave grains;
a3, spray coating: the bottom coating and the surface coating can be sprayed in sequence; drying the bottom coating (sold in the market) at 125-150 ℃, spraying the surface coating (sold in the market) after drying the bottom coating, drying the surface, and sintering in a baking furnace;
a4, sintering and removing film: the metal plate coated with the coating is subjected to film removing treatment by a sintering procedure comprising the following temperature zones: the initial volatilization section of the first zone is 155-175 ℃, the high-temperature sintering section of the second zone is 435-445 ℃, the coating layer is sintered and solidified, the photosensitive adhesive layer 7 is kept for sintering and coking, the cross-linking stable section of the third zone is 380-390 ℃, the furnace outlet is immediately and forcefully cooled to about 60 ℃ by air, and the expansion caused by heat and the contraction caused by cold are intensified; sintering at high temperature to make the photosensitive adhesive layer reserved on the surface of the smooth metal plate lose adhesive force, the coating in the etching area is tightly combined with the etched concave-convex rough surface, and the coating covering the exposed pattern area of the metal plate and reserved above the photosensitive adhesive layer can be easily removed after the metal plate is taken out of the furnace, so that the smooth metal surface area is exposed;
a5, chemical polishing: chemically polishing the exposed metal surface to remove yellow marks, oxide layers and the like formed by sintering; the chemical polishing process comprises the following steps: workpiece → chemical polishing → cleaning → nitric acid brightening → cleaning → hot water soaking → drying, wherein the chemical polishing solution is made of sodium hydroxide and sodium nitrate, the total alkalinity is 18-35%, the temperature is 90-110 ℃, the polishing time is 2-10 seconds, the workpiece after chemical polishing needs to be cleaned by two flows of clean water, the water quality is kept clean, and the hot water soaking temperature is more than 80 ℃;
a6, press forming: and pressing the metal plate 1 obtained from A5 into a shape required by an appliance to obtain a metal pot body with the surface partially coated with the coating.
The patterns of the metal appliance manufactured by the method are shown in fig. 15 and 16, the relief pattern corresponding to the concave grains is a geometric pattern which is regularly arranged and can be outwards infinitely arranged, the geometric pattern comprises lines and points, the basic pattern of the geometric pattern is a pattern formed by rotating a Y-shaped line which is formed by three equal-length line segments arranged at an included angle of 120 degrees around an original point by 60 degrees, and a plurality of convex points are arranged in the pattern.
EXAMPLE III
A method for achieving a topical application of a coating to a surface of a metal cooking appliance, comprising the steps of:
b1-1, sizing: coating a photosensitive adhesive layer on the surface of a smooth and clean metal plate 1, wherein the photosensitive adhesive is diluted by alcohol at a ratio of 0.8:1 to 1.15:1, the drying temperature is 83-87 ℃, and the drying time is 15-30 minutes;
b1-2, exposure: carrying out exposure in a vacuum exposure machine for 60-120 seconds;
b1-3, developing: developing in a developing machine, wherein a photosensitive adhesive layer is reserved in an exposed pattern area on the surface of a metal plate by using a traditional film photographic dark box developing method, the metal surfaces of other areas are exposed, and a developing agent (industrial sodium carbonate: water is about 1:10) is used at the developing temperature of 30-45 ℃;
b1-4, hardening: the baking temperature is 135-180 ℃, and the baking time is 15-25 minutes;
b2, chemical etching: an etching agent (ferric trichloride: water: hydrochloric acid ratio 1:10 (0.03-0.08)), a solution concentration of 38-40 DEG Be, a solution temperature of 30-45 ℃, and a spray pressure of 1.2-2.8 kg/cm2The surface of the bare metal plate can be etched to the roughness Ra0.8-Ra6.3 and the etching depth can reach 0.2mm by adjusting the proportion of the medicament and the spraying pressure, so that the bare metal forms a surface structure with concave grains;
b3, spray coating: the bottom coating and the surface coating can be sprayed in sequence; drying the bottom coating (sold in the market) at 125-150 ℃, spraying the surface coating (sold in the market) after drying the bottom coating, drying the surface, and sintering in a baking furnace;
b4, sintering: the vessel coated with the coating is sintered at the following multi-stage temperature: the initial volatilization section of the first zone is 155-175 ℃, the high-temperature sintering section of the second zone is 435-445 ℃, the coating layer is sintered and solidified, the photosensitive adhesive layer 7 is kept for sintering and coking, the cross-linking stabilizing section of the third zone is 380-390 ℃, a furnace outlet is naturally cooled, and the integrity of the coating layer is kept;
b5-1, press forming: pressing the metal plate 1 obtained in the step S5 into a shape required by a vessel, carrying out extrusion molding on the metal plate 1 coated with the coating through a hard metal convex-concave die, wherein the coating is isolated between the die and the metal plate, so that adverse factors such as friction, collision and the like directly generated between the metal plate and the hard metal die are avoided, and after molding and demolding, the surface of the metal plate can be kept smooth without being repaired by mechanical methods such as polishing and the like; meanwhile, the extrusion of the die accelerates the stripping of the coating on the photosensitive adhesive layer;
b5-2, stripping: the mold is extruded to make the photosensitive adhesive layer retained on the surface of the smooth metal plate lose adhesive force, the etching area coating is tightly combined with the etched concave-convex rough surface, the coating covering the exposed pattern area of the metal plate and retaining the photosensitive adhesive layer can be easily removed after demolding, the smooth metal surface area is exposed, and the metal pot body with the coating partially coated on the surface is obtained
B6, chemical polishing: chemically polishing the exposed metal surface to remove yellow marks, oxide layers and the like formed by sintering; the chemical polishing process comprises the following steps: workpiece → chemical polishing → cleaning → nitric acid brightening → cleaning → hot water soaking → drying, wherein the chemical polishing solution is made of sodium hydroxide and sodium nitrate, the total alkalinity is 18-35%, the temperature is 90-110 ℃, the polishing time is 2-10 seconds, the workpiece after chemical polishing needs to be cleaned by two flows of clean water, the water quality is kept clean, and the hot water soaking temperature is more than 80 ℃;
the metal vessel which is partially coated with the coating and is manufactured by the method is shown in fig. 17, the convex pattern corresponding to the concave grains is a geometric pattern which is regularly arranged and can be outwards infinitely arranged, the geometric pattern comprises lines and points, the basic pattern of the geometric pattern is a 'Y' -shaped line which is formed by three equal-length line segments arranged at an included angle of 120 degrees and a pattern which rotates around the original point by 60 degrees around the circular arc at the periphery of the 'Y' -shaped line, and convex points are arranged in the pattern.
Example four
A method for achieving a topical application of a coating to a surface of a metal cooking appliance, comprising the steps of:
b1-1, sizing: coating a photosensitive adhesive layer on the surface of a smooth and clean metal plate 1, wherein the photosensitive adhesive is diluted by alcohol at a ratio of 0.8:1 to 1.15:1, the drying temperature is 83-87 ℃, and the drying time is 15-30 minutes;
b1-2, exposure: carrying out exposure in a vacuum exposure machine for 60-120 seconds;
b1-3, developing: developing in a developing machine, wherein a photosensitive adhesive layer is reserved in an exposed pattern area on the surface of a metal plate by using a traditional film photographic dark box developing method, the metal surfaces of other areas are exposed, and a developing agent (industrial sodium carbonate: water is about 1:10) is used at the developing temperature of 30-45 ℃;
b1-4, hardening: the baking temperature is 135-180 ℃, and the baking time is 15-25 minutes;
b2, chemical etching: an etching agent (ferric trichloride: water: hydrochloric acid ratio 1:10 (0.03-0.08)), a solution concentration of 38-40 DEG Be, a solution temperature of 30-45 ℃, and a spray pressure of 1.2-2.8 kg/cm2The surface of the bare metal plate can be etched to the roughness Ra0.8-Ra6.3 and the etching depth can reach 0.1mm by adjusting the proportion of the medicament and the spraying pressure, so that the bare metal forms a surface structure with concave grains;
b3, spray coating: the bottom coating and the surface coating can be sprayed in sequence; drying the bottom coating (sold in the market) at 125-150 ℃, spraying the surface coating (sold in the market) after drying the bottom coating, drying the surface, and sintering in a baking furnace;
b4, sintering: the vessel coated with the coating is sintered at the following multi-stage temperature: the initial volatilization section of the first zone is 155-175 ℃, the high-temperature sintering section of the second zone is 435-445 ℃, the coating layer is sintered and solidified, the photosensitive adhesive layer 7 is kept for sintering and coking, the cross-linking stabilizing section of the third zone is 380-390 ℃, a furnace outlet is naturally cooled, and the integrity of the coating layer is kept;
b5-1, press forming: pressing the metal plate 1 obtained in the step S5 into a shape required by a vessel, carrying out extrusion molding on the metal plate 1 coated with the coating through a hard metal convex-concave die, wherein the coating is isolated between the die and the metal plate, so that adverse factors such as friction, collision and the like directly generated between the metal plate and the hard metal die are avoided, and after molding and demolding, the surface of the metal plate can be kept smooth without being repaired by mechanical methods such as polishing and the like; meanwhile, the extrusion of the die accelerates the stripping of the coating on the photosensitive adhesive layer;
b5-2, stripping: the mold is extruded to make the photosensitive adhesive layer retained on the surface of the smooth metal plate lose adhesive force, the etching area coating is tightly combined with the etched concave-convex rough surface, the coating covering the exposed pattern area of the metal plate and retaining the photosensitive adhesive layer can be easily removed after demolding, the smooth metal surface area is exposed, and the metal pot body with the coating partially coated on the surface is obtained
B6, chemical polishing: chemically polishing the exposed metal surface to remove yellow marks, oxide layers and the like formed by sintering; the chemical polishing process comprises the following steps: workpiece → chemical polishing → cleaning → nitric acid brightening → cleaning → hot water soaking → drying, wherein the chemical polishing solution is made of sodium hydroxide and sodium nitrate, the total alkalinity is 18-35%, the temperature is 90-110 ℃, the polishing time is 2-10 seconds, the workpiece after chemical polishing needs to be cleaned by two flows of clean water, the water quality is kept clean, and the hot water soaking temperature is more than 80 ℃;
the metal vessel which is partially coated with the coating and is manufactured by the method is shown in fig. 18, the convex patterns corresponding to the concave patterns are regularly arranged and outwards infinitely arranged geometric patterns which comprise lines and points, the basic figures of the geometric patterns are equilateral triangles, and the equilateral triangles are internally provided with convex points.
EXAMPLE five
A processing method of a non-stick pan with concave grains comprises the following steps:
a1-1, sizing: coating a photosensitive adhesive layer on the surface of a smooth and clean metal plate 1, wherein the photosensitive adhesive is diluted by alcohol at a ratio of 0.8:1 to 1.15:1, the drying temperature is 83-87 ℃, and the drying time is 15-30 minutes;
a1-2, exposure: carrying out exposure in a vacuum exposure machine for 60-120 seconds;
a1-3, developing: developing in a developing machine, wherein a photosensitive adhesive layer is reserved in an exposed pattern area on the surface of a metal plate by using a traditional film photographic dark box developing method, the metal surfaces of other areas are exposed, and a developing agent (industrial sodium carbonate: water is about 1:10) is used at the developing temperature of 30-45 ℃;
a1-4, firm: the baking temperature is 135-180 ℃, and the baking time is 15-25 minutes;
a2, chemical etching: an etching agent (ferric trichloride: water: hydrochloric acid in a mass ratio of 1:10 (0.03-0.08)), a solution concentration of 38-40 DEG Be, a solution temperature of 30-45 ℃, and a spray pressure of 1.2-2.8 kg/cm2The surface of the bare metal plate can be etched to the roughness Ra0.8-Ra6.3 by adjusting the proportion of the medicament and the spraying pressure, and the etching depth can reach 0.3mm, so that the bare metal forms a surface structure with concave grains;
a3, spray coating: the bottom coating and the surface coating can be sprayed in sequence; drying the bottom coating (sold in the market) at the temperature of 125-150 ℃, sequentially spraying the middle coating (sold in the market) and the surface coating (sold in the market) after drying the bottom coating, and sintering in a baking oven after surface drying;
a4, sintering and removing film: the metal plate coated with the coating is subjected to film removing treatment by a sintering procedure comprising the following temperature zones: the initial volatilization section of the first zone is 180-200 ℃, the high-temperature sintering section of the second zone is 430-445 ℃, the coating layer is sintered and solidified, the photosensitive adhesive layer 7 is kept for sintering and coking, the cross-linking stable section of the third zone is 400-420 ℃, the furnace outlet is immediately and forcefully cooled to about 60 ℃ by air, and the expansion caused by heat and the contraction caused by cold are intensified; sintering at high temperature to make the photosensitive adhesive layer reserved on the surface of the smooth metal plate lose adhesive force, the coating in the etching area is tightly combined with the etched concave-convex rough surface, and the coating covering the exposed pattern area of the metal plate and reserved above the photosensitive adhesive layer can be easily removed after the metal plate is taken out of the furnace, so that the smooth metal surface area is exposed;
a5, chemical polishing: chemically polishing the exposed metal surface to remove yellow marks, oxide layers and the like formed by sintering; the chemical polishing process comprises the following steps: workpiece → chemical polishing → cleaning → nitric acid light extraction → cleaning → hot water soaking → drying, wherein the chemical polishing solution is made of sodium hydroxide and sodium nitrate, the total alkalinity is 18-35%, the temperature is 90-110 ℃, the polishing time is 2-10 seconds, the workpiece after chemical polishing needs to be cleaned by two flows of clean water, the water quality is kept clean, and the hot water soaking temperature is more than 80 ℃;
a6, press forming: and pressing the metal plate 1 obtained from A5 into a shape required by an appliance to obtain a metal pot body with the surface partially coated with the coating.
As shown in FIG. 19, the metal utensil manufactured by the above method has the convex patterns corresponding to the concave patterns, wherein the convex patterns are regularly arranged and can be outwards infinitely arranged, the basic patterns of the geometric patterns are isosceles triangles, and the convex points are arranged in the isosceles triangles.
Claims (10)
1. The processing method of the non-stick pan with the concave grains is characterized by comprising the following steps of:
a1, coating photosensitive resist diluted by alcohol on the surface of a metal plate, drying, exposing and developing to form a preset pattern, baking to harden:
a2, carrying out chemical etching on the surface of the exposed metal plate by spraying etching agent to form a structure with concave grains on the surface of the metal plate;
a3, spraying the prepared coating to the whole surface of the metal plate obtained by the A2 treatment in sequence;
a4, sintering and stripping the coated metal plate through the following temperature zones: an initial volatilization section T1 for volatilizing the water and volatile substances in the coating; in the second high-temperature sintering section T2, the coating layer is solidified, and the photosensitive adhesive layer is sintered and coked; a three-region crosslinking stabilizing section T3, wherein organic matters in the coating form crosslinking; the four-section low-temperature cooling section T4 is expanded with heat and contracted with cold to peel off the coked photosensitive adhesive layer;
a5, carrying out chemical polishing on the metal plate obtained in the step A4, and removing yellow marks and/or an oxide layer formed by sintering;
and A6, pressing the metal plate obtained in the step A5 into a shape required by a utensil to obtain the non-stick pan with the non-stick coating in the concave grains.
2. The processing method of the non-stick pan with the concave grains is characterized by comprising the following steps of:
b1, coating the photosensitive resist diluted by alcohol on the surface of the metal plate, drying, exposing and developing to form a preset pattern, baking to harden:
b2, carrying out chemical etching on the surface of the exposed metal plate by spraying an etching agent to form a structure with concave grains on the surface of the metal plate;
b3, spraying the prepared coating to the whole surface of the metal plate obtained by the S2 treatment in sequence;
b4, sintering the coated metal plate through the following multi-temperature zones: an initial volatilization section T1 for volatilizing the water and volatile substances in the coating; in the second high-temperature sintering section T2, the coating layer is solidified, and the photosensitive adhesive layer is sintered and coked; a three-region crosslinking stabilizing section T3, wherein organic matters in the coating form crosslinking; naturally cooling the furnace outlet to keep the coating film layer complete;
b5, extruding the metal plate obtained in the step S4 through a die to form a utensil shape, enabling the photosensitive adhesive layer reserved on the surface of the smooth metal plate to lose adhesive force, and removing the coating covering the exposed pattern area of the metal plate and reserved above the photosensitive adhesive layer after demolding;
and B6, performing chemical polishing on the metal plate obtained in the step S5, and removing yellow marks and/or an oxide layer formed by sintering to obtain the non-stick pan with the non-stick coating in the concave grains.
3. The processing method of the non-stick pan with the concave veins according to the claim 1 or 2, characterized in that the convex pattern corresponding to the concave veins is a geometric pattern which is regularly arranged and can be infinitely arranged outwards, the geometric pattern comprises lines and/or points, the basic pattern of the geometric pattern is an isosceles triangle, or a pattern formed by rotating a broken line formed by two equal-length line segments arranged at an included angle of 120 degrees around an original point by 120 degrees, or a pattern formed by rotating a Y-shaped line formed by three equal-length line segments arranged at an included angle of 120 degrees around the original point by 60 degrees and a pattern formed by rotating an arc around the periphery of the Y-shaped line around the original point by 60 degrees.
4. The processing method of the non-stick pan with the concave patterns according to claim 3, wherein the dilution volume ratio of the alcohol to the photosensitive glue is (0.8-1.15): 1, the drying temperature of the photosensitive glue is 80-90 ℃, the drying time of the photosensitive glue is 15-30 minutes, the exposure time is 60-120 seconds, the developing agent formed by industrial soda solution is adopted for development, the developing temperature is 30-45 ℃, the baking hardening temperature is 135-180 ℃, and the exposure time is 15-25 minutes.
5. The method for processing a non-stick pan with depressed grooves according to claim 3, wherein the predetermined pattern is provided by a negative exposure development method.
6. The method for manufacturing a non-stick pan with concave patterns according to claim 3, wherein the etching is performed to a roughness Ra of 0.8-6.3 and a depth of the etching is not more than 0.8 mm.
7. The processing method of the non-stick pan with the concave lines as claimed in claim 3, wherein in S2, the etching agent is ferric trichloride in a mass ratio of 1:10 (0.03-0.08): water: hydrochloric acid, the concentration of the solution is 38-40 DEG Be, the temperature of the solution is 30-45 ℃, and the spraying pressure is 1.2-2.8 kg/cm2。
8. The method as claimed in claim 3, wherein in the step S5, the chemical polishing solution is a mixed solution of sodium hydroxide and sodium nitrate, the total alkalinity is 18-35%, and the temperature is 90-110 ℃.
9. The method for processing the non-stick pan with concave patterns according to claim 1, wherein in the A4, the initial volatilization section T1 of a zone is 150-300 ℃; the second-zone high-temperature sintering section T2 is 420-480 ℃; the three-region cross-linking stable section T3 is 350-420 ℃; the four-zone low-temperature cooling section T4 is air-cooled to below 60 ℃ at room temperature.
10. The method for processing a non-stick pan with concave patterns according to claim 2, wherein in B4, the initial volatilization section T1 of a zone is 150-200 ℃; the second-zone high-temperature sintering section T2 is 430-450 ℃; the three-region cross-linking stable section T3 is 380-390 ℃.
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Cited By (1)
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