CN112006528A - Laser cladding diamond energy-saving pot and preparation method thereof - Google Patents

Laser cladding diamond energy-saving pot and preparation method thereof Download PDF

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Publication number
CN112006528A
CN112006528A CN202011057606.0A CN202011057606A CN112006528A CN 112006528 A CN112006528 A CN 112006528A CN 202011057606 A CN202011057606 A CN 202011057606A CN 112006528 A CN112006528 A CN 112006528A
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powder
diamond
layer
cladding
laser cladding
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CN112006528B (en
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刘炳耀
陈健
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Sinotech Group Guangdong Technology Research Co ltd
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Sinotech Group Guangdong Technology Research Co ltd
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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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A47J36/025—Vessels with non-stick features, e.g. coatings
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • 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
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
    • 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
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
    • C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
    • C23C24/106—Coating with metal alloys or metal elements only

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

The invention discloses a laser cladding diamond energy-saving pot and a preparation method thereof, and relates to the technical field of non-stick pots. The invention provides a laser cladding diamond energy-saving pot.A transition layer, a first ceramic layer and a diamond ceramic layer are sequentially arranged on the inner surface of a pot body from inside to outside; the first ceramic layer contains both stainless steel powder and ceramic powder, so that the surface layer of the pot body is gradually transited to ceramic, and the bonding force of each layer is improved; the diamond powder is added into the diamond ceramic layer, so that the compactness of the coating on the surface of the pan can be improved, the hardness and the wear resistance of the pan are improved, and the service life is prolonged. The preparation method of the laser cladding diamond energy-saving pot provided by the invention is simple in process and suitable for industrial production.

Description

Laser cladding diamond energy-saving pot and preparation method thereof
Technical Field
The invention relates to the technical field of kitchenware, in particular to a laser cladding diamond energy-saving pot and a preparation method thereof.
Background
The coating of non-stick pans is generally divided into two categories: teflon coatings and ceramic coatings. The Teflon coating has very low hardness, can not be washed by hot pot and cold, is easy to peel off, and the most important point is that the Teflon coating can not exceed 250 ℃, can be slowly decomposed at 260 ℃ to release toxic gas, and the decomposition rate at 350 ℃ is improved by more than ten times. Therefore, ceramic coatings are becoming increasingly popular.
However, the non-stick property of the ceramic coating is greatly different from that of the Teflon coating, and the non-stick property and the service life of the ceramic coating can be greatly prolonged by improving the compactness and the wear resistance of the ceramic coating.
Disclosure of Invention
The invention aims to solve the technical problem of how to improve the compactness and the wear resistance of the ceramic coating of the non-stick pan.
In order to solve the above problems, the present invention proposes the following technical solutions:
the invention provides a laser cladding diamond energy-saving pot which comprises a pot body,
a laser cladding diamond energy-saving pot comprises a pot body, wherein a transition layer, a first ceramic layer and a diamond ceramic layer are sequentially arranged on the inner surface of the pot body from inside to outside; the weight percentage of the raw materials is calculated,
the transition layer comprises 2-10% of stainless steel powder, 1-10% of aluminum powder, 20-30% of alumina powder, 30-50% of silica powder, 25-50% of titanium oxide powder and 3-10% of modified MCrAlY;
the first ceramic layer comprises 15-40% of alumina powder, 3-10% of zirconia powder, 20-50% of silica powder, 20-50% of titanium oxide powder and 3-10% of stainless steel powder;
the diamond ceramic layer comprises 3-30% of diamond powder, 15-40% of alumina powder, 10-50% of silica powder and 20-50% of titanium oxide powder;
the modified MCrAlY consists of 90-98% of MCrAlY, 0.5-5% of Si, 0.5-4% of Pt and 0.5-2% of Ta, wherein M is cobalt, nickel or cobalt-nickel alloy; the cobalt-nickel alloy contains 10-40% cobalt and 60-90% nickel.
Preferably, the cobalt nickel alloy contains 26-30% cobalt and 70-84% nickel.
The modified MCrAlY is added with Si, Pt and Ta powder on the basis of MCrAlY to increase the caking property; the stainless steel powder is selected from any one of 304 stainless steel, 201 stainless steel and 202 stainless steel.
The further technical proposal is that the particle size of the diamond powder is 20-100 nanometers, and the purity is more than or equal to 99.9 percent; the particle size of other powders is 20-300 nm.
The further technical proposal is that the thicknesses of the transition layer, the first ceramic layer and the diamond ceramic layer are respectively 5-25 microns, 5-20 microns and 10-30 microns.
The technical scheme is that a first cladding layer, a second cladding layer and a third cladding layer are sequentially arranged on the outer surface of the pot body from inside to outside.
The further technical scheme is that the first cladding layer comprises, by mass, 3-10% of modified MCrAlY, 20-60% of nickel powder, 10-30% of iron powder, 5-20% of zirconium powder and 8-20% of silicon powder.
The second cladding layer comprises 30-60% of iron powder, 10-20% of antimony powder, 8-30% of tin powder, 5-20% of copper powder, 11.5-33.0% of nickel powder and 4.3-8.0% of cobalt powder.
The further technical scheme is that the third cladding layer is a zinc layer.
The further technical proposal is that the material of the pan body is any one of aluminum, iron, stainless steel, copper, titanium and ceramics.
The invention also provides a method for preparing the laser cladding diamond energy-saving pot, which comprises the following steps:
s1, performing sand blasting treatment on the clean pot body;
s2, heating the pot body to the temperature of 220 ℃ and 280 ℃, and spraying the transition layer, the first ceramic layer and the diamond ceramic layer by laser cladding in sequence.
The laser cladding process is that a laser cladding machine is adopted, argon is used as protective gas, a fiber laser is used as a transmitting laser source, powder to be prepared is subjected to multi-channel lap joint on a substrate in a conical powder beam coaxial powder feeding mode for laser cladding, and the laser power, the spot diameter, the scanning speed and the powder feeding speed of the laser cladding are controlled; a lap factor of 0.6 was achieved.
The further technical scheme is that the laser cladding power is 400-900W, the spot diameter is 1.2-4 mm, the scanning speed is 50-500 mm/s, and the powder feeding speed is 5-30 g/s.
The further technical scheme is that after the step S2, the method further comprises: and laser cladding is carried out to spray a first cladding layer, a second cladding layer and a third cladding layer in sequence.
Compared with the prior art, the invention can achieve the following technical effects:
the invention provides a laser cladding diamond energy-saving pot.A transition layer, a first ceramic layer and a diamond ceramic layer are sequentially arranged on the inner surface of a pot body from inside to outside; the transition layer contains a large amount of metal and metal oxide powder, and the modified MCrAlY is a bonding material, so that the bonding force of the pot body, the transition layer and the first ceramic layer is improved; the first ceramic layer contains both stainless steel powder and ceramic powder, so that the surface layer of the pot body is gradually transited to ceramic; the diamond powder is added into the diamond ceramic layer, so that the compactness of the coating on the surface of the pan can be improved, the hardness and the wear resistance of the pan are improved, and the service life is prolonged.
The preparation method of the laser cladding diamond energy-saving pot provided by the invention is simple in process and suitable for industrial production.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic coating diagram of a laser cladding diamond energy-saving pan according to an embodiment of the present invention.
Reference numerals
The pot body 1, transition layer 2, first ceramic layer 3, diamond ceramic layer 4, first cladding layer 5, second cladding layer 6, second cladding layer 7.
Detailed Description
The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, wherein like reference numerals represent like elements in the drawings. It is apparent that the embodiments to be described below are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the invention. As used in the description of embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Referring to fig. 1, the embodiment of the invention provides a laser cladding diamond energy-saving pot, which comprises a pot body 1, wherein a transition layer 2, a first ceramic layer 3 and a diamond ceramic layer 4 are sequentially arranged on the inner surface of the pot body 1 from inside to outside.
In the following, "%" means mass percent unless otherwise specified.
The transition layer comprises 2-10% of stainless steel powder, 1-10% of aluminum powder, 20-30% of alumina powder, 30-50% of silica powder, 25-50% of titanium oxide powder and 3-10% of modified MCrAlY;
the first ceramic layer comprises 15-40% of alumina powder, 3-10% of zirconia powder, 20-50% of silica powder, 20-50% of titanium oxide powder and 3-10% of stainless steel powder;
the diamond ceramic layer comprises 3-30% of diamond powder, 15-40% of alumina powder, 10-50% of silica powder and 20-50% of titanium oxide powder.
The modified MCrAlY consists of 90-98% of MCrAlY, 0.5-5% of Si, 0.5-4% of Pt and 0.5-2% of Ta, wherein M is cobalt, nickel or cobalt-nickel alloy; the cobalt-nickel alloy contains 10-40% cobalt and 60-90% nickel.
The transition layer contains a large amount of metal and metal oxide powder, the modified MCrAlY is used as a bonding material, and the addition of Si, Pt and Ta powder is beneficial to improving the bonding force of the pot body, the transition layer and the first ceramic layer; the first ceramic layer contains both stainless steel powder and ceramic powder, so that the surface layer of the pot body is gradually transited to ceramic; the diamond powder is added into the diamond ceramic layer, so that the compactness of the coating on the surface of the pan can be improved, the hardness and the wear resistance of the pan are improved, and the service life is prolonged.
In a specific embodiment, the stainless steel powder is selected from any one of 304 stainless steel, 201 stainless steel and 202 stainless steel.
In one embodiment, in order to improve the binding force of each component, the particle size of the diamond powder is 20-100 nanometers, and the purity is 99.9 percent; the particle diameter of other powder is 20-300 nm, and the purity is 99.9%.
The diamond powder is nano-scale diamond powder.
The finer the powder is, the tighter the formed coating is, so that the compactness of the coating is improved and the wear resistance is improved.
In one embodiment, the transition layer, the first ceramic layer, and the diamond ceramic layer have a thickness of 5-25 microns, 5-20 microns, and 10-30 microns, respectively.
In one embodiment, the outer surface of the pot body is sequentially provided with a first cladding layer 5, a second cladding layer 6 and a third cladding layer 7 from inside to outside.
The thicknesses of the first cladding layer 5, the second cladding layer 6 and the third cladding layer 7 are 20-50 micrometers, 20-60 micrometers and 30-60 micrometers respectively.
Specifically, the first cladding layer comprises 3-10% of modified MCrAlY, 20-60% of nickel powder, 10-30% of iron powder, 5-20% of zirconium powder and 8-20% of silicon powder.
Specifically, the second cladding layer comprises 30-60% of iron powder, 10-20% of antimony powder, 8-30% of tin powder, 5-20% of copper powder, 11.5-33.0% of nickel powder and 4.3-8.0% of cobalt powder.
Specifically, the third cladding layer is a zinc layer.
The modified MCrAlY is a bonding material and is added into the first cladding layer, so that the bonding force among the pot body, the first cladding layer and the second cladding layer is improved.
The pot bottom composed of the first cladding layer, the second cladding layer and the third cladding layer has the functions of energy conservation and magnetic conduction, the metal powder of the energy conservation layer can radiate far infrared waves, the metal powder has good spectral emissivity in the whole infrared band, the average spectral emissivity is above 0.82, and the far infrared wave far exceeds the national industrial standard. Especially in the wave band range of 2.5-5 μm, the infrared spectrum emissivity is close to the emissivity of a black body and reaches more than 0.97. The component of the second cladding layer has a complex crystal structure and element valence, the transition between the vibration energy level and the rotation energy level of crystal lattice is easy to occur, and the energy required by the transition between the energy levels is matched with the energy in the infrared short wave band range, so that the short wave band emissivity of the energy-saving layer is greatly improved.
In addition, when the induction cooker is heated, the magnetism can change along with the temperature, the magnetic conductivity is high (below 200 ℃) at low temperature, and the magnetic conductivity is weakened at more than 300 ℃, so that the temperature of the energy-saving layer can be maintained at 250 ℃ through the matching of the first cladding layer, the second cladding layer and the third cladding layer, the high magnetic conductivity is maintained, and the heating efficiency is improved.
The energy-saving layer provided by the invention has high radiation, the radiation energy is transmitted in the form of far infrared waves, and the far infrared waves are absorbed by a heated object when being radiated to the heated object. The far infrared wave has strong penetrating power, can penetrate through the pot body and penetrate into food, so that the surface and the inside of the heated object are heated simultaneously, the heating time is further shortened, and the heating is uniform. If the pot body is an aluminum pot and can not be directly used on the induction cooker, the coating can conduct magnetism and can be used on the induction cooker, and the application of the pot is expanded.
In other embodiments, the material of the pan body is any one of aluminum, iron, stainless steel, copper, titanium and ceramic.
The embodiment of the invention also provides a method for preparing the laser cladding diamond energy-saving pot, which comprises the following steps:
s1, performing sand blasting treatment on the clean pot body;
after the pot body is formed, the cleaning operation of oil removal and dust removal is needed for the pot body, and the clean pot body is beneficial to improving the binding force between each coating and the pot body. The surface of the pot body can be purified by adopting a chemical degreasing method to obtain a clean pot body. The chemical degreasing refers to cleaning degreasing by using an organic solvent or soaking degreasing by using an alkaline treatment agent.
Further, carrying out sand blasting treatment on the inner surface of the pot body by using brown corundum with 24-80 meshes, wherein the spraying pressure is 0.8-1.0 MPa, and the spraying speed is 3-4 m3The spray jet speed is 5kg/h, the treatment time is 25-40 s, the spray angle is 75-90 degrees, and the spray distance is 20-30 mm. The surface roughness of the pot body reaches Ra 3.0-9.0 μm; the roughness is beneficial to the first cladding layer to have the best adhesive force, and the bonding strength of the first cladding layer and the pot body is improved.
S2, heating the pot body to 180-280 ℃, and sequentially carrying out laser cladding and spraying on the transition layer, the first ceramic layer and the diamond ceramic layer;
the laser cladding process is that a laser cladding machine is adopted, argon is used as shielding gas, a fiber laser is used as a transmitting laser source, powder to be prepared is subjected to multi-channel lapping on a substrate in a conical powder beam coaxial powder feeding mode to be subjected to laser cladding, and the lapping coefficient is enabled to reach 0.6 by controlling the laser power, the spot diameter, the scanning speed and the powder feeding speed of the laser cladding.
In one embodiment, the laser cladding power is 400-900W, the spot diameter is 1.2-4 mm, the scanning speed is 50-500 mm/s, and the powder feeding speed is 5-30 g/s.
In an embodiment, step S2 is followed by: and laser cladding is carried out to spray a first cladding layer, a second cladding layer and a third cladding layer in sequence.
Unless otherwise stated, the laser cladding diamond energy-saving pots provided in the following examples are all prepared by the above preparation method.
Example 1
The embodiment 1 of the invention provides a laser cladding diamond energy-saving pot which comprises a pot body with the thickness of 300 micrometers, wherein a transition layer with the thickness of 10 micrometers, a first ceramic layer with the thickness of 12 micrometers and a diamond ceramic layer with the thickness of 20 micrometers are sequentially arranged on the inner surface of the pot body from inside to outside; the outer surface of the pot body is sequentially provided with a first cladding layer with the thickness of 25 microns, a second cladding layer with the thickness of 30 microns and a third cladding layer with the thickness of 50 microns from inside to outside.
The transition layer comprises 10% of stainless steel powder, 10% of aluminum powder, 20% of alumina powder, 30% of silica powder, 25% of titanium oxide powder and 5% of modified MCrAlY;
the first ceramic layer comprises 20% of alumina powder, 10% of zirconia powder, 20% of silica powder, 40% of titanium oxide powder and 10% of stainless steel powder;
the diamond ceramic layer comprises 20% of diamond powder, 30% of alumina powder, 30% of silica powder and 20% of titanium oxide powder.
The first cladding layer comprises 5% of modified MCrAlY, 35% of nickel powder, 40% of iron powder, 10% of zirconium powder and 10% of silicon powder.
The second cladding layer comprises 35% of iron powder, 10% of antimony powder, 20% of tin powder, 5% of copper powder, 25% of nickel powder and 5.0% of cobalt powder.
The modified MCrAlY consists of 90 percent of MCrAlY, 5 percent of Si, 3 percent of Pt and 2 percent of Ta, wherein M is cobalt-nickel alloy; the cobalt nickel alloy contains 27% cobalt and 73% nickel.
The pot body is made of ceramic.
The stainless steel powder is selected from 304 stainless steel.
Example 2
The embodiment 2 of the invention provides a laser cladding diamond energy-saving pot which comprises a pot body with the thickness of 300 micrometers, wherein a transition layer with the thickness of 20 micrometers, a first ceramic layer with the thickness of 20 micrometers and a diamond ceramic layer with the thickness of 20 micrometers are sequentially arranged on the inner surface of the pot body from inside to outside; the outer surface of the pot body is sequentially provided with a first cladding layer with the thickness of 35 microns, a second cladding layer with the thickness of 20 microns and a third cladding layer with the thickness of 30 microns from inside to outside.
The transition layer comprises 10% of stainless steel powder, 5% of aluminum powder, 25% of alumina powder, 25% of silica powder, 25% of titanium oxide powder and 10% of modified MCrAlY;
the first ceramic layer comprises 20% of alumina powder, 10% of zirconia powder, 20% of silica powder, 40% of titanium oxide powder and 10% of stainless steel powder;
the diamond ceramic layer comprises 20% of diamond powder, 30% of alumina powder, 30% of silica powder and 20% of titanium oxide powder.
The first cladding layer comprises 5% of modified MCrAlY, 35% of nickel powder, 40% of Fe, 10% of zirconium powder and 10% of silicon powder.
The second cladding layer comprises 35% of Fe, 12% of Sb, 18% of Sn, 5% of Cu, 22% of Ni and 8.0% of Co.
The modified MCrAlY consists of 92% MCrAlY, 2% Si, 4% Pt and 2% Ta, wherein M is cobalt.
The pot body is made of ceramic.
The stainless steel powder is selected from 201 stainless steel.
Example 3
The embodiment 3 of the invention provides a laser cladding diamond energy-saving pot which comprises a pot body with the thickness of 400 microns, wherein a transition layer with the thickness of 20 microns, a first ceramic layer with the thickness of 20 microns and a diamond ceramic layer with the thickness of 20 microns are sequentially arranged on the inner surface of the pot body from inside to outside; the outer surface of the pot body is sequentially provided with a first cladding layer with the thickness of 35 microns, a second cladding layer with the thickness of 20 microns and a third cladding layer with the thickness of 30 microns from inside to outside.
The transition layer comprises 10% of stainless steel powder, 6% of aluminum powder, 25% of alumina powder, 25% of silica powder, 30% of titanium oxide powder and 4% of modified MCrAlY;
the first ceramic layer comprises 25% of alumina powder, 5% of zirconia powder, 35% of silica powder, 25% of titanium oxide powder and 10% of stainless steel powder;
the diamond ceramic layer comprises 25% of diamond powder, 30% of alumina powder, 25% of silica powder and 20% of titanium oxide powder.
The first cladding layer comprises 10% of modified MCrAlY, 25% of nickel powder, 40% of Fe, 15% of zirconium powder and 10% of silicon powder.
The second cladding layer comprises 50% of Fe, 10% of Sb, 10% of Sn, 10% of Cu, 15.0% of Ni and 5.0% of Co.
The modified MCrAlY consists of 95 percent of MCrAlY, 0.5 percent of Si, 3 percent of Pt and 1.5 percent of Ta, wherein M is nickel.
The pot body is made of ceramic.
The stainless steel powder is selected from 304 stainless steel.
Example 4
The embodiment 4 of the invention provides a laser cladding diamond energy-saving pot which comprises a pot body with the thickness of 400 microns, wherein a transition layer with the thickness of 10 microns, a first ceramic layer with the thickness of 20 microns and a diamond ceramic layer with the thickness of 30 microns are sequentially arranged on the inner surface of the pot body from inside to outside; the outer surface of the pot body is sequentially provided with a first cladding layer with the thickness of 35 microns, a second cladding layer with the thickness of 20 microns and a third cladding layer with the thickness of 30 microns from inside to outside.
The transition layer comprises 10% of stainless steel powder, 3% of aluminum powder, 25% of alumina powder, 35% of silica powder, 20% of titanium oxide powder and 7% of modified MCrAlY;
the first ceramic layer comprises 25% of alumina powder, 5% of zirconia powder, 35% of silica powder, 25% of titanium oxide powder and 10% of stainless steel powder;
the diamond ceramic layer comprises 25% of diamond powder, 20% of alumina powder, 35% of silica powder and 20% of titanium oxide powder.
The first cladding layer comprises 10% of modified MCrAlY, 25% of nickel powder, 40% of Fe, 15% of zirconium powder and 10% of silicon powder.
The second cladding layer comprises 40% of Fe, 20% of Sb, 10% of Sn, 5% of Cu, 20.0% of Ni and 5.0% of Co.
The modified MCrAlY consists of 96 percent of MCrAlY, 1 percent of Si, 1 percent of Pt and 2 percent of Ta, wherein M is cobalt-nickel alloy; cobalt nickel alloys contain 30% cobalt and 70% nickel.
The pot body is made of ceramic.
The stainless steel powder is selected from 202 stainless steel.
Example 5
The embodiment 5 of the invention provides a laser cladding diamond energy-saving pot which comprises a pot body with the thickness of 400 microns, wherein a transition layer with the thickness of 25 microns, a first ceramic layer with the thickness of 20 microns and a diamond ceramic layer with the thickness of 30 microns are sequentially arranged on the inner surface of the pot body from inside to outside; the outer surface of the pot body is sequentially provided with a first cladding layer with the thickness of 28 microns, a second cladding layer with the thickness of 40 microns and a third cladding layer with the thickness of 40 microns from inside to outside.
The transition layer comprises 10% of stainless steel powder, 8% of aluminum powder, 25% of alumina powder, 35% of silica powder, 20% of titanium oxide powder and 2% of modified MCrAlY;
the first ceramic layer comprises 25% of alumina powder, 5% of zirconia powder, 35% of silica powder, 25% of titanium oxide powder and 10% of stainless steel powder;
the diamond ceramic layer comprises 25% of diamond powder, 25% of alumina powder, 25% of silica powder and 25% of titanium oxide powder.
The first cladding layer comprises 10% of modified MCrAlY, 25% of nickel powder, 40% of Fe, 15% of zirconium powder and 10% of silicon powder.
The second cladding layer comprises 40% of Fe, 20% of Sb, 20% of Sn, 5% of Cu, 10.0% of Ni and 5.0% of Co.
The modified MCrAlY consists of 96 percent of MCrAlY, 1 percent of Si, 1 percent of Pt and 2 percent of Ta, wherein M is cobalt-nickel alloy; cobalt nickel alloys contain 20% cobalt and 80% nickel.
The pot body is made of ceramic.
The stainless steel powder is selected from 304 stainless steel.
Comparative example 1: the difference from example 1 is that comparative example 1 lacks the first ceramic layer and the pot thickness is 312 μm.
Comparative example 2: the difference from example 1 is that comparative example 2 lacks a diamond ceramic layer and the pot thickness is 320 microns.
Comparative example 3: the difference from example 1 is that comparative example 3 lacks the first cladding layer and the pot thickness is 325 microns.
Comparative example 4: the difference from example 1 is that comparative example 4 lacks the second cladding layer and the pot thickness is 330 microns.
Performance testing
The performance tests were performed on the non-stick pans provided in examples 1-3 and comparative examples 1-4. The test results are given in table 1 below.
The wear-resisting test method comprises the steps of applying 5kg of static vertical pressure on the upper part of a pot body by using 3M-7447 scouring pad, rubbing back and forth, circulating once in front and back, replacing the scouring pad every 1000 times, and recording the circulating times.
The thermal efficiency testing method comprises the steps of turning on the intelligent program-controlled variable-frequency power supply instrument, setting the voltage to be 220V, pressing the starting switch and pressing the display screen power supply switch. 500ml of clean water at normal temperature is added into the sample. And switching on a power supply of the induction cooker, adjusting to the maximum power level for heating until water is boiled, recording the power and time during boiling, and calculating the thermal efficiency.
The coating adhesion fastness is carried out according to the test method of the national standard GB/T2421-1998.
Table 1:
test items Example 1 Example 2 Example 3 Comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4
Abrasion resistance test 530000 560000 580000 180000 120000 530000 530000
Thermal efficiency% 95.1 94.5 97.0 90.3 92.1 61.0 49.6
Fastness of coating adhesion Qualified Qualified Qualified Coating peeling off Coating peeling off Qualified Qualified
As shown in table 1, the laser cladding energy-saving diamond pot provided in embodiments 1 to 3 of the present invention has a wear-resistant diamond coating (transition layer + first ceramic layer + diamond ceramic layer) and a high thermal efficiency energy-saving coating (first cladding layer + second cladding layer + third cladding layer), which cooperate to provide a pot body with good wear resistance and thermal efficiency, thereby prolonging the service life of the pot. Comparative example 1 lacks the first ceramic layer, the pot body does not bond well with the diamond ceramic layer, the coating adhesion is poor, and the wear resistance is poor; comparative example 2 lacks a diamond ceramic layer and has poor wear resistance; the energy-saving layers of comparative example 3 and comparative example 4 have poor heat conduction effects and low thermal efficiency.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A laser cladding diamond energy-saving pot comprises a pot body, and is characterized in that a transition layer, a first ceramic layer and a diamond ceramic layer are sequentially arranged on the inner surface of the pot body from inside to outside; the weight percentage of the raw materials is calculated,
the transition layer comprises 2-10% of stainless steel powder, 1-10% of aluminum powder, 20-30% of alumina powder, 30-50% of silica powder, 25-50% of titanium oxide powder and 3-10% of modified MCrAlY;
the first ceramic layer comprises 15-40% of alumina powder, 3-10% of zirconia powder, 20-50% of silica powder, 20-50% of titanium oxide powder and 3-10% of stainless steel powder;
the diamond ceramic layer comprises 3-30% of diamond powder, 15-40% of alumina powder, 10-50% of silica powder and 20-50% of titanium oxide powder;
the modified MCrAlY consists of 90-98% of MCrAlY, 0.5-5% of Si, 0.5-4% of Pt and 0.5-2% of Ta, wherein M is cobalt, nickel or cobalt-nickel alloy; the cobalt-nickel alloy contains 10-40% cobalt and 60-90% nickel.
2. The laser cladding diamond energy-saving pot of claim 1, wherein the diamond powder has a particle size of 20-100 nm and a purity of 99.9% or higher.
3. The laser cladding diamond energy saving pot of claim 2, wherein the transition layer, the first ceramic layer, and the diamond ceramic layer have thicknesses of 5-25 microns, 5-20 microns, and 10-30 microns, respectively.
4. The laser cladding diamond energy-saving pot of claim 1, wherein a first cladding layer, a second cladding layer and a third cladding layer are sequentially arranged on the outer surface of the pot body from inside to outside.
5. The laser cladding diamond energy-saving pot according to claim 4, wherein the composition of the first cladding layer comprises, by mass, 3-10% of the modified MCrAlY, 20-60% of nickel powder, 10-30% of iron powder, 5-20% of zirconium powder, and 8-20% of silicon oxide powder.
6. The laser cladding diamond energy-saving pot according to claim 5, wherein the composition of the second cladding layer comprises, by mass, 30-60% of iron powder, 10-20% of antimony powder, 8-30% of tin powder, 5-20% of copper powder, 11.5-33.0% of nickel powder, and 4.3-8.0% of cobalt powder.
7. The laser-clad diamond energy-saving pot of claim 6, wherein said third cladding layer is a zinc layer.
8. The laser cladding diamond energy-saving pot of claim 1, wherein the material of the pot body is any one of aluminum, iron, stainless steel, copper, titanium and ceramic.
9. Method for preparing a laser cladding diamond energy saving pan according to any of claims 1-8, comprising the following steps:
s1, performing sand blasting treatment on the clean pot body;
s2, heating the pot body to 180-280 ℃, and spraying the transition layer, the first ceramic layer and the diamond ceramic layer in sequence by laser cladding;
the laser cladding power is 400-900W, the spot diameter is 1.2-4 mm, the scanning speed is 50-500 mm/s, and the powder feeding speed is 5-30 g/s.
10. The method for preparing a laser cladding diamond energy saving pan according to claim 9, further comprising after step S2: and laser cladding is carried out to spray a first cladding layer, a second cladding layer and a third cladding layer in sequence.
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