CN111197151B - Energy-gathering ring pot frame for kitchen range and production process thereof - Google Patents
Energy-gathering ring pot frame for kitchen range and production process thereof Download PDFInfo
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- CN111197151B CN111197151B CN201811365269.4A CN201811365269A CN111197151B CN 111197151 B CN111197151 B CN 111197151B CN 201811365269 A CN201811365269 A CN 201811365269A CN 111197151 B CN111197151 B CN 111197151B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 75
- 238000000576 coating method Methods 0.000 claims abstract description 75
- 238000005524 ceramic coating Methods 0.000 claims abstract description 43
- 239000000919 ceramic Substances 0.000 claims abstract description 32
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims abstract description 31
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims description 36
- 238000005245 sintering Methods 0.000 claims description 30
- 238000005507 spraying Methods 0.000 claims description 26
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 239000000956 alloy Substances 0.000 claims description 18
- 239000011159 matrix material Substances 0.000 claims description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 9
- 238000007750 plasma spraying Methods 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 238000005488 sandblasting Methods 0.000 claims description 6
- 238000004381 surface treatment Methods 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 238000007788 roughening Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 3
- 229910003310 Ni-Al Inorganic materials 0.000 description 18
- 229910006501 ZrSiO Inorganic materials 0.000 description 13
- 239000010410 layer Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910052845 zircon Inorganic materials 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010406 interfacial reaction Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/10—Tops, e.g. hot plates; Rings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The invention provides an energy-gathering ring pot frame for a kitchen range and a production process thereof, wherein the outside of a substrate of the energy-gathering ring pot frame is coated with a heat-insulating ceramic composite coating, the thickness of the composite coating is 60-80 mu m, and the composite coating comprises a metal coating and a ceramic coating. In the invention, the metal coating is a nickel-aluminum alloy coating, the ceramic coating is a zirconium silicate ceramic coating, the heat insulation performance of the energy-gathering ring pot frame can be improved, the cost is low, and the appearance of the product is good.
Description
Technical Field
The invention belongs to the technical field of household appliances, in particular to the technical field of kitchen ranges.
Background
The existing energy-collecting ring pot holders used on household gas cookers in the market have poor service performance, wherein the energy-collecting ring pot holders made of cast iron materials are more, the heat conductivity of the cast iron materials is relatively high, meanwhile, the heat absorption capacity of the cast iron materials is high, and the heat efficiency of the cookers is improved due to the characteristics of the cast iron energy-collecting ring pot holders; the energy-collecting ring pot frame is made of the stainless steel plate, the heat-insulating interlayer is arranged in the middle of the energy-collecting ring stainless steel plate, and the energy-collecting ring pot frame has good heat-insulating performance, but has the advantages of complex manufacturing, poor appearance and high cost.
Disclosure of Invention
The invention mainly aims to solve the problems and the defects, and firstly provides the energy-collecting ring pot frame for the kitchen range, which has good heat insulation effect, attractive appearance and lower cost, and the production process of the energy-collecting ring pot frame.
In order to achieve the purpose, the invention firstly provides an energy-gathering ring pot frame for a kitchen range, which adopts the technical scheme that:
an energy-gathering ring pot frame for a kitchen range is characterized in that a heat-insulating ceramic composite coating is coated outside a matrix of the energy-gathering ring pot frame.
Further, the thermal insulation ceramic composite coating comprises a metal coating layer coated outside the substrate and a ceramic coating layer coated outside the metal coating layer.
Further, the metal coating is a nickel-aluminum alloy coating.
Further, the ceramic coating is a zirconium silicate ceramic coating.
Further, the thickness of the heat-insulating ceramic composite coating is 60-80 mu m.
The invention further provides a production process of the energy-gathering ring pot frame for the kitchen range, which comprises the following steps of:
s1, processing a sample of a cast energy-gathering ring pot frame, and performing rust removal, oil removal and sand blasting roughening surface treatment on the surface of a substrate of the sample;
s2, preheating a sample to 200+/-10 ℃, and spraying nickel-aluminum powder on the surface of a substrate by using a flame spray gun to form a nickel-aluminum alloy coating;
s3, spraying the prepared zirconium silicate ceramic powder on the surface of the sample coated with the alloy coating in a plasma spraying mode by taking argon and hydrogen as working gases;
s4, conveying the sample into an atmosphere sintering furnace for sintering, wherein the sintering temperature is 1300-1500 ℃, the sintering atmosphere is N2, and the pressure is 0.2MPa, so that the zirconium silicate ceramic coating is prepared on the outer layer of the alloy coating;
and S5, cooling the sample to room temperature, standing for 24 hours, sampling to detect whether the thickness of the zirconium silicate ceramic coating is within a specified interval range, and respectively carrying out waste sample treatment or returning to the step S3 on the samples which are not within the specified interval range according to different thicknesses, and carrying out plasma spraying again after the spraying amount is reduced.
Further, in the step S2, the content of the aluminum powder in the nickel-aluminum powder is 4-10wt%.
Further, in the step S2, the nickel-aluminum alloy coating layer is formed to have a thickness of 20-30 μm.
Further, the thickness of the zirconium silicate ceramic coating is 35-55 mu m.
Further, in step S5, when the detected quantity exceeds 10% of the prescribed upper limit, the batch of samples is determined to be waste, and the batch of samples enters the waste treatment process, and when the detected quantity is less than 15% of the prescribed lower limit, the batch of samples is returned to step S3, and plasma spraying is performed again after the spraying quantity is reduced.
In summary, the energy-gathering ring pot rack for the kitchen range and the processing technology provided by the invention have the following advantages compared with the prior art: the raw materials of the zirconium silicate are widely and easily available, the price is low, the number of the thermal expansion systems of the formed ceramic or ceramic coating is small, the chemical stability is good, the high-temperature corrosion resistance is realized, the nickel-aluminum alloy coating is used as the bottom layer of the ceramic coating, the stress generated by the mismatch of the thermal expansion systems between the ceramic layer and the matrix can be relieved, and the oxidation corrosion resistance effect is realized on the matrix, so that the ceramic layer and the matrix can be tightly combined, and the coating is effectively prevented from falling off.
Detailed Description
The present invention will be described in further detail with reference to the following specific embodiments.
The invention provides an energy-gathering ring pot frame for a kitchen range, wherein a heat-insulating ceramic composite coating is coated outside a substrate of the energy-gathering ring pot frame, the thickness of the composite coating is 60-80 mu m, and the energy-gathering ring pot frame comprises a metal coating outside the coated substrate and a ceramic coating outside the metal coating. In the invention, the metal coating is a nickel-aluminum alloy coating, and the ceramic coating is a zirconium silicate ZrSiO4 ceramic coating.
The invention further provides a production process of the energy-gathering ring pot frame for the kitchen range, which is further a production process for producing the energy-gathering ring pot frame by coating a heat-insulating ceramic composite coating on a common casting substrate, and comprises the following steps of:
s1, processing a sample of the cast energy-gathering ring pot frame, wherein the surface of the substrate is required to be pretreated before spraying in order to improve the adsorption force between the coating and the substrate and prevent the corrosion and the coating from being partially stripped and falling off, and the surface of the substrate of the sample is subjected to rust removal, degreasing treatment and sand blasting roughening surface treatment by a conventional thermal spraying pretreatment method.
S2, preheating the sample after surface treatment to 200+/-10 ℃, and spraying nickel-based metal powder on the surface of the substrate after sand blasting treatment by using a flame spray gun, wherein the oxygen-acetylene flame spray gun is usually adopted to form a nickel-based alloy coating on the surface of the sample. The use amount of the nickel-aluminum Ni-Al metal powder in the spraying process is controlled, so that the thickness of the formed nickel-aluminum Ni-Al alloy coating is 20-30 mu m, the effect of effectively resisting oxidation corrosion can be achieved, and the alloy coating, the ceramic layer and the matrix can be tightly combined.
S3, directly processing the ceramic coating on the sample coated with the alloy coating, and if necessary, using argon as working gas, or using a mixed gas of argon and hydrogen as working gas, and spraying the prepared ceramic powder on the surface of the sample coated with the alloy coating in an ion spraying mode. The powder outlet of the ion spray gun is vertical to the surface of the matrix, the spraying distance of 80-120mm is kept, and zirconium silicate ZrSiO is uniformly sprayed on the surface of the matrix 4 Ceramic powder.
The sample is directly sprayed with ceramic powder after the alloy coating is finished, so that the residual temperature of the sample during the alloy coating can be fully utilized, and then the ceramic coating is re-added on the surface of the alloy coating, thereby saving energy and shortening the processing period. The ion spraying equipment is an automatic spraying system and comprises a control device, wherein the control device pre-stores relevant parameters of positions, surface areas and coating thicknesses of different energy-accumulating ring pot frames to be sprayed and corresponding ceramic powder consumption, and the thickness of a ceramic coating is 35-55 mu m. Similarly, in the step S2, when the nickel-aluminum Ni-Al alloy is sprayed, the amount of the nickel-aluminum Ni-Al metal powder can be controlled according to the surface area to be sprayed in the control device matched with the flame spray gun, so as to achieve the corresponding coating thickness.
When the ceramic coating is sprayed, the invention selects zirconium silicate ZrSiO 4 PowderZirconium silicate ZrSiO 4 Is a common ceramic material, has small number of thermal expansion systems, chemical stability, high-temperature corrosion resistance and low price, and adopts ion spraying and zirconium silicate ZrSiO 4 Decomposed SiO 2 And ZrO(s) 2 Due to the interfacial reaction, zirconia ZrO can be effectively prevented 2 No stabilizer is added, and, when the sintering treatment is performed, siO is decomposed 2 And ZrO(s) 2 When the heat treatment is carried out at the temperature of more than 1200 ℃, the zirconium ZrSiO4 coating can be quickly converted, so that the final forming effect of the product is good.
In order to further reduce the thermal conductivity of the ceramic coating, the zirconium silicate ZrSiO 4 The powder can be added with a certain amount of aluminum oxide Al 2 O 3 Powder, e.g. 8.7wt% Al 2 O 3 The powder can make the density of the formed ceramic coating higher, the porosity lower, the coefficient of thermal expansion is small, through experimental verification, the thermal diffusion system and the thermal conductivity are reduced by 10%.
S4, sending the prepared sample into an atmosphere sintering furnace for sintering, wherein the sintering temperature is 1200-1500 ℃, the sintering atmosphere is N2, the pressure is 0.2MPa, and the sintering time is 1.5-2 h, so that the zirconium silicate ZrSiO is prepared on the outer layer of the alloy coating 4 Ceramic coating, thereby coating zirconium silicate ZrSiO on the surface of the energy-gathering ring pot body 4 Nickel-aluminum Ni-Al composite ceramic coating. Although the thicker the composite coating, in particular zirconium silicate ZrSiO 4 The thicker the coating, the better the heat insulation effect, but in order to consider the cost and the total weight of the product, a large number of experiments prove that when the total thickness of the composite ceramic coating is 60-80 mu m, especially when the thickness of the ceramic coating is not more than 50-55 mu m, the heat insulation effect, the weight, the adsorption effect and the cost are optimal.
S5, in the actual production process, when the coating operation of the composite ceramic coating is carried out on the energy-gathering ring pot body, production and processing are carried out on a plurality of products at the same time, in order to control the quality of the products, sampling detection is carried out on the coated samples, the thickness of the coating required in the operation standard is confirmed when the processing of the products meets the processing of the batch, the sintered samples are cooled to the room temperature and then are placed for 24 hours, and the products are obtainedSampling and detecting zirconium silicate ZrSiO according to the regulation 4 And (3) whether the thickness of the ceramic coating is within a preset interval range, respectively carrying out waste sample treatment or a returning step S3 on samples which are not within the preset interval range according to different thicknesses, and carrying out plasma spraying again after reducing the spraying amount.
Further, when the sampling detects that the total thickness of the thermal insulation ceramic composite coating coated on the substrate exceeds 10% of the upper limit, determining the batch of samples as waste parts, entering a waste part treatment process, for example, the ceramic coating can be chemically treated on the basis of ensuring that the nickel-aluminum alloy coating is not damaged, and then returning to the step S3, and manually and properly regulating the zirconium silicate ZrSiO according to the ceramic coating exceeding program 4 And (3) the amount of the ceramic powder is used for carrying out spraying and sintering of the ceramic coating again and detecting again, and when the thickness of the ceramic coating is lower than 15% of the specified lower limit, all samples in the batch return to the step (S3), and plasma spraying, sintering and further sampling detection are carried out again after the spraying amount is reduced according to the thickness of the coating. The specific scrap handling process and repainting operation may be handled according to production specifications and are not required or limited herein.
Example 1
The production process for producing the energy-accumulating ring pot frame by coating the heat-insulating ceramic composite coating on the common casting matrix comprises the following steps:
s1, processing a sample of the cast energy-gathering ring pot frame, and carrying out rust removal, oil removal treatment and sand blasting roughening surface treatment on the surface of a substrate of the sample by a conventional thermal spraying pretreatment method before spraying.
S2, preheating the sample after surface treatment to 200+/-10 ℃, and spraying nickel-aluminum Ni-Al metal powder with the main component of 4 weight percent on the surface of the substrate after sand blasting treatment by using an oxygen-acetylene flame spray gun. The dosage of the nickel-aluminum Ni-Al metal powder in the spraying process is controlled, so that the thickness of the formed nickel-aluminum Ni-Al alloy coating is 20-30 mu m.
S3, directly processing the ceramic coating on the sample sprayed with the alloy coating, taking argon as working gas, and if necessary, selecting mixed gas of argon and hydrogen as working gas, and coating the alloy coatingThe surface of the sample of the layer is sprayed with the prepared ceramic powder by means of ion spraying. The powder outlet of the ion spray gun is vertical to the surface of the matrix, the spraying distance of 80-120mm is kept, and zirconium silicate ZrSiO is uniformly sprayed on the surface of the matrix 4 Ceramic powder, the dosage of which is controlled to make the thickness of the ceramic coating layer 35-55 mu m.
S4, sending the prepared sample into an atmosphere sintering furnace for sintering, wherein the sintering temperature is 1200 ℃, the sintering atmosphere is N2, the pressure is 0.2MPa, and the sintering time is 1.5h, so that the surface of the energy-gathering ring pot body is coated with zirconium silicate/nickel-aluminum ZrSiO 4 Ni-Al composite ceramic coating.
S5, cooling the sintered sample to room temperature, standing for 24 hours, and sampling and detecting zirconium silicate ZrSiO in the product according to the specification 4 And when the thickness of the ceramic coating is lower than 15% of the specified lower limit, the batch of samples are directly returned to the step S3, and plasma spraying, sintering and further sampling detection are carried out again after the spraying amount is reduced according to the thickness of the coating. The thermal-insulating ceramic composite coating is qualified when the total thickness exceeds 0-10% of the upper limit or is less than 0-15% of the lower limit.
Example 2
The production process for producing the energy-accumulating ring pot frame by coating the heat-insulating ceramic composite coating on the common casting substrate is the same as the step method in the embodiment 1, and the difference is that:
s2, when nickel-aluminum Ni-Al metal powder is sprayed, the aluminum Al powder content in the nickel-aluminum Ni-Al metal powder is 5wt%;
s4, sintering temperature is 1300 ℃, and sintering time is 1.8h.
Example 3
The production process for producing the energy-accumulating ring pot frame by coating the heat-insulating ceramic composite coating on the common casting substrate is the same as the step method in the embodiment 1, and the difference is that:
s2, when nickel-aluminum Ni-Al metal powder is sprayed, the aluminum Al powder content in the nickel-aluminum Ni-Al metal powder is 7wt%;
s4, sintering temperature is 1400 ℃, and sintering time is 2h.
Example 4
The production process for producing the energy-accumulating ring pot frame by coating the heat-insulating ceramic composite coating on the common casting substrate is the same as the step method in the embodiment 1, and the difference is that:
s2, when nickel-aluminum Ni-Al metal powder is sprayed, the content of aluminum Al powder in the nickel-aluminum Ni-Al metal powder is 10wt%;
s4, sintering temperature is 1500 ℃, and sintering time is 2h.
Example 5
The production process for producing the energy-accumulating ring pot frame by coating the heat-insulating ceramic composite coating on the common casting substrate is the same as the step method in the embodiment 1, and the difference is that:
s2, when nickel-aluminum Ni-Al metal powder is sprayed, a small amount of cobalt Co and magnesium Mg metal powder is also contained in the nickel-aluminum Ni-Al metal powder, wherein the content of aluminum Al powder is 8.7wt%;
s4, sintering temperature is 1350 ℃, and sintering time is 1.8h.
It should be noted that the various control parameters given in the above embodiments are only a few examples and should not be construed as limiting the production process control parameters. In actual production, each parameter may be selected in the recommended range of each control parameter given by the implementation, and the production mode in the actual production process may be not only the above several production methods, as long as each parameter is within the numerical range provided by the present invention, and is within the protection range of the present invention.
In summary, the energy-gathering ring pot rack for the kitchen range and the processing technology provided by the invention have the following advantages compared with the prior art: the zirconium silicate ZrSiO4 has the advantages of wide and easily available raw materials and low price, and the formed ceramic or ceramic coating has small number of thermal expansion systems, good chemical stability and high-temperature corrosion resistance, and the nickel-aluminum Ni-Al alloy coating is used as the bottom layer of the ceramic coating, so that the stress generated between the ceramic layer and the matrix due to the mismatch of the thermal expansion systems can be relieved, and the matrix is subjected to the effect of oxidation corrosion resistance, so that the ceramic layer and the matrix can be tightly combined, and the coating is effectively prevented from falling off.
As mentioned above, similar technical solutions can be derived in combination with the presented solution content. However, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (5)
1. An energy-gathering ring pot rack for a kitchen range is characterized in that: the exterior of the matrix of the energy-gathering ring pot frame is coated with a heat-insulating ceramic composite coating, the heat-insulating ceramic composite coating comprises a metal coating coated on the exterior of the matrix and a ceramic coating coated on the exterior of the metal coating, the metal coating is a nickel-aluminum alloy coating, and the thickness of the coating is 20-30 mu m; the ceramic coating is a zirconium silicate ceramic coating added with alumina powder, and the content of the alumina is 8.7wt%; the thickness of the thermal insulation ceramic composite coating is 60-80 mu m, wherein the thickness of the ceramic coating is 35-55 mu m.
2. The production process of the energy-gathering ring pot rack for the kitchen range is characterized by comprising the following steps of: comprises the following steps of the method,
s1, processing a sample of a cast energy-gathering ring pot frame, and performing rust removal, oil removal and sand blasting roughening surface treatment on the surface of a substrate of the sample;
s2, preheating a sample to 200+/-10 ℃, and spraying nickel-aluminum powder on the surface of a substrate by using a flame spray gun to form a nickel-aluminum alloy coating, wherein the aluminum powder content is 4-10wt%;
s3, spraying zirconium silicate ceramic powder with 8.7wt% of prepared alumina on the surface of the sample coated with the alloy coating by using argon and hydrogen as working gases in a plasma spraying mode;
s4, conveying the sample into an atmosphere sintering furnace for sintering, wherein the sintering temperature is 1300-1500 ℃, and the sintering atmosphere is N 2 The pressure is 0.2MPa, so that a zirconium silicate ceramic coating is prepared on the outer layer of the alloy coating;
and S5, cooling the sample to room temperature, standing for 24 hours, sampling to detect whether the thickness of the zirconium silicate ceramic coating is within a specified interval range, and respectively carrying out waste sample treatment or returning to the step S3 on the samples which are not within the specified interval range according to different thicknesses, and carrying out plasma spraying again after the spraying amount is reduced.
3. The production process of the energy-gathering ring pot holder for the kitchen range as claimed in claim 2, wherein the production process comprises the following steps of: in the step S2, the thickness of the formed nickel-aluminum alloy coating is 20-30 mu m.
4. The production process of the energy-gathering ring pot holder for the kitchen range as claimed in claim 2, wherein the production process comprises the following steps of: the thickness of the zirconium silicate ceramic coating is 35-55 mu m.
5. The production process of the energy-gathering ring pot holder for the kitchen range as claimed in claim 2, wherein the production process comprises the following steps of: in step S5, when the detected quantity exceeds 10% of the prescribed upper limit, the batch of samples is determined to be waste, and the batch of samples enters a waste treatment process, and when the detected quantity is less than 15% of the prescribed lower limit, the batch of samples is returned to step S3, and plasma spraying is performed again after the spraying quantity is reduced.
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| CN201811365269.4A CN111197151B (en) | 2018-11-16 | 2018-11-16 | Energy-gathering ring pot frame for kitchen range and production process thereof |
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| CN201811365269.4A CN111197151B (en) | 2018-11-16 | 2018-11-16 | Energy-gathering ring pot frame for kitchen range and production process thereof |
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| US5476696A (en) * | 1993-04-16 | 1995-12-19 | Martin Marietta Corporation | White thermal control surfaces containing ZrSiO4 |
| CN2183523Y (en) * | 1993-10-13 | 1994-11-23 | 马海云 | Energy-saving device for civil gas range |
| CA2744001A1 (en) * | 2008-11-20 | 2010-05-27 | Volvo Aero Corporation | Method for coating an exhaust port and apparatus for performing the method |
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