CN115521642B - Serpentine composite anti-oxidation coating for protecting metal material, and preparation method and application thereof - Google Patents
Serpentine composite anti-oxidation coating for protecting metal material, and preparation method and application thereof Download PDFInfo
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- 238000000576 coating method Methods 0.000 title claims abstract description 121
- 239000011248 coating agent Substances 0.000 title claims abstract description 117
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 title claims abstract description 92
- 239000007769 metal material Substances 0.000 title claims abstract description 67
- 230000003064 anti-oxidating effect Effects 0.000 title claims abstract description 65
- 239000002131 composite material Substances 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 57
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 57
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 57
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000843 powder Substances 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 36
- 239000002994 raw material Substances 0.000 claims abstract description 36
- 230000008569 process Effects 0.000 claims abstract description 34
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 33
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 27
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 27
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 27
- 239000005388 borosilicate glass Substances 0.000 claims abstract description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims description 48
- 238000010438 heat treatment Methods 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 25
- 239000011863 silicon-based powder Substances 0.000 claims description 25
- 238000005303 weighing Methods 0.000 claims description 24
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 239000007864 aqueous solution Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- 230000003750 conditioning effect Effects 0.000 claims description 8
- 235000011837 pasties Nutrition 0.000 claims description 8
- 238000005496 tempering Methods 0.000 claims description 8
- 229910052810 boron oxide Inorganic materials 0.000 claims description 7
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 57
- 239000010959 steel Substances 0.000 abstract description 57
- 230000000694 effects Effects 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000011230 binding agent Substances 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 14
- 238000005507 spraying Methods 0.000 description 9
- 238000007664 blowing Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 3
- 239000000375 suspending agent Substances 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003223 protective agent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- 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
- B05D7/16—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 using synthetic lacquers or varnishes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a serpentine composite anti-oxidation coating for protecting metal materials, and a preparation method and application thereof, wherein the serpentine composite anti-oxidation coating comprises the following raw materials in parts by weight: serpentine powder: 42-52, high borosilicate glass powder: 2-8, silicon carbide powder: 0.8-3, silica powder: 0.25-1, sodium hexametaphosphate: 0.35-1.5, hydroxypropyl methylcellulose: 1.2-1.4, water: 38-45; the serpentine composite anti-oxidation coating for protecting the metal material is based on the high temperature resistance of the serpentine material, and is matched with a proper binding agent, so that the prepared coating has the protection temperature of 1330 ℃ and forms a compact protection film on the surface of a steel billet at high temperature, thereby effectively preventing oxygen from diffusing to metal, greatly reducing the oxidation burning loss and oxidation of the metal material, having good protection effect, automatically falling off the coating in the cooling process of the steel billet, avoiding influencing the subsequent process, avoiding introducing new components on the surface of the steel billet, and effectively improving the hot working benefit and material performance of the metal material.
Description
Technical Field
The invention relates to the technical field of metal material hot processing, in particular to serpentine composite anti-oxidation coating for protecting metal materials, and a preparation method and application thereof.
Background
In the high-temperature heating process, the surface of steel is easy to burn by oxidation, and oxidation not only causes raw material and energy waste, but also damages the surface quality of the material, so that the surface layer tissue of the material is damaged, and the yield of products is greatly influenced. Therefore, the protection of the substrate by the high temperature resistant protective coating during the hot working process of the metal material is a metal material surface protection technology developed in the last decades. However, from the current related application technology and use effect, the antioxidation temperature of some antioxidation coatings is too low, and most of the antioxidation temperatures of the coatings are about 1000 ℃; some coatings are only suitable for certain special metals and alloys, have high cost and no universal applicability, and some coatings have the problem of falling off at high temperature, so that the protection effect is not ideal. Therefore, developing an environment-friendly metal material anti-oxidation protective coating which is convenient in raw material source, wide in application range, low in cost, nontoxic, harmless and pollution-free becomes a problem to be solved in the industry.
Disclosure of Invention
The invention aims to provide a serpentine composite anti-oxidation coating for protecting a metal material, a preparation method and application thereof, aiming at solving the problems that the surface of the existing metal material is easily oxidized and burnt in the hot working process, the surface quality of the material is damaged, the product yield is affected, the existing metal material surface protection coating is generally low in anti-oxidation temperature, or has no general applicability or is high in cost and the like.
The serpentine composite anti-oxidation coating for protecting metal materials is prepared from the following raw materials in parts by weight: serpentine powder: 42-52, high borosilicate glass powder: 2-8, silicon carbide powder: 0.8-3, silica powder: 0.25-1, sodium hexametaphosphate: 0.35-1.5, hydroxypropyl methylcellulose: 1.2-1.4, water: 38-45.
Preferably, the serpentine composite anti-oxidation coating for protecting metal materials is prepared from the following raw materials in parts by weight: serpentine powder: 47, high borosilicate glass powder: 5, silicon carbide powder: 2, silicon powder: 0.5, sodium hexametaphosphate: 1, hydroxypropyl methylcellulose: 1.2, water: 41.
mg in serpentine powder in the invention 6 [Si 4 O 10 ](OH) 8 The mass percentage of the particles is more than or equal to 95 percent, and the particle size is less than 300 meshes; the mass percentage of silicon dioxide and boron oxide in the high borosilicate glass powder is more than or equal to 93 percent, and the grain diameter is less than 10 mu m; the mass percentage of SiC in the silicon carbide powder is more than or equal to 98 percent, and the grain diameter is less than 50 mu m; the mass percentage of Si in the silicon powder is more than or equal to 95 percent, and the grain diameter is less than 20 mu m; the sodium hexametaphosphate and the hydroxypropyl methylcellulose are industrial pure raw materials.
The invention discloses a preparation method of serpentine composite anti-oxidation coating for protecting metal materials, which comprises the following steps:
(1) Weighing silicon carbide powder, silicon powder and sodium hexametaphosphate according to parts by weight, and fully and uniformly mixing to prepare a conditioning agent for standby;
(2) Weighing serpentine powder and high borosilicate glass powder according to parts by weight, mixing with the hardening and tempering agent prepared in the step (1), adding into a mixer, fully and uniformly mixing, then adding into a mixer, fully mixing for 30-40 minutes, destroying pseudo particles in the raw materials, and fully and uniformly mixing again to prepare a coating basic raw material;
(3) Weighing hydroxypropyl methylcellulose and water according to parts by weight, heating the water to 40-50 ℃, adding the hydroxypropyl methylcellulose into the water, and fully stirring to fully dissolve the hydroxypropyl methylcellulose in warm water to prepare an aqueous solution of the hydroxypropyl methylcellulose;
(4) Mixing the coating base material prepared in the step (2) with the hydroxypropyl methyl cellulose aqueous solution prepared in the step (3), and fully stirring to prepare the pasty serpentine composite anti-oxidation coating.
The invention relates to application of serpentine composite anti-oxidation coating for protecting metal materials in protecting metal materials.
When the serpentine composite anti-oxidation coating for protecting the metal material is used in a high-temperature process of the metal material, the prepared coating is added into a spray gun before the high-temperature process of the metal material, a layer of coating with the thickness of 1-2mm is directly sprayed on the surface of the metal material by the spray gun, after the coating is dried, the coating is directly sent into a heating furnace for high-temperature process treatment, after the high-temperature process treatment is finished, the metal material is discharged from the heating furnace, and the coating is naturally separated from the metal material along with the reduction of the temperature of the metal material and is directly separated from the surface of the metal material, so that the subsequent processing process can be carried out.
The various raw materials used in the serpentine composite anti-oxidation coating for protecting metal materials of the invention have the following functions in the invention:
wherein, the serpentine powder and the high borosilicate glass contain magnesium oxide, silicon dioxide and other components, which can be used as matrix agents of high-temperature coating protective agents, thereby improving the whole applicable temperature range of the composite anti-oxidation coating; silicon carbide powder can generate a denser silicon dioxide oxide layer at high temperature; when the simple substance Si powder is added into the composite anti-oxidation coating, as the Si powder has certain plasticity,may be filled between the aggregates. Therefore, with the addition of the silicon powder, the anti-oxidation coating is more compact, so that the compactness of the material is improved. Sodium hexametaphosphate can be used for preparing Mg on the surface of serpentine 2+ The complex reaction occurs, so that the serpentine is adsorbed on the surface of the mineral, the positive charge on the surface of the serpentine is less, the negative charge is increased, and the zeta potential of the serpentine is shifted to the negative direction. Under the condition that the pH value is 8.9, serpentine particles are easy to attract each other in the ore pulp solution, so that agglomeration occurs, and agglomeration among serpentine particles disappears after sodium hexametaphosphate is added, so that a better dispersion state is obtained. The carboxymethyl cellulose is used as a suspending agent, and the suspending agent is used for uniformly suspending and dispersing each powder particle in a carrier liquid so as to ensure that a coating with uniform components is formed on the surface of a pattern, and meanwhile, the suspending agent also endows the coating with the required rheological property.
The serpentine composite antioxidation coating has the following action principle:
the serpentine composite anti-oxidation coating for protecting the metal material is based on the high temperature resistance of the serpentine material, and is matched with a proper binding agent, so that the prepared coating has the protection temperature of 1330 ℃ and forms a compact protection film on the surface of a steel billet at high temperature, thereby effectively preventing oxygen from diffusing to metal, greatly reducing the oxidation burning loss and oxidation of the metal material, having good protection effect, automatically falling off the coating in the cooling process of the steel billet, avoiding influencing the subsequent process, avoiding introducing new components on the surface of the steel billet, and effectively improving the hot working benefit and material performance of the metal material.
Drawings
FIG. 1 is a photograph of a serpentine composite antioxidant coating prepared in example 1 of the present invention after being coated on a steel to be processed by a high temperature process.
Detailed Description
In order to better explain the technical solution of the present invention, the following description of the technical solution of the present invention is given by way of example only and not by way of limitation in any way, in conjunction with specific examples.
Example 1
The serpentine composite anti-oxidation coating for protecting the metal material is prepared from the following raw materials in parts by weight: serpentine powder: 47, high borosilicate glass powder: 5, silicon carbide powder: 2, silicon powder: 0.5, sodium hexametaphosphate: 1, hydroxypropyl methylcellulose: 1.2, water: 41.
mg in serpentine powder described in this example 6 [Si 4 O 10 ](OH) 8 The mass percentage of the particles is more than or equal to 95 percent, and the particle size is less than 300 meshes; the mass percentage of silicon dioxide and boron oxide in the high borosilicate glass powder is more than or equal to 93 percent, and the grain diameter is less than 10 mu m; the mass percentage of SiC in the silicon carbide powder is more than or equal to 98 percent, and the grain diameter is less than 50 mu m; the mass percentage of Si in the silicon powder is more than or equal to 95 percent, and the grain diameter is less than 20 mu m; the sodium hexametaphosphate and the hydroxypropyl methylcellulose are industrial pure raw materials.
The preparation method of the serpentine composite anti-oxidation coating for protecting the metal material comprises the following steps:
(1) Weighing silicon carbide powder, silicon powder and sodium hexametaphosphate according to parts by weight, and fully and uniformly mixing to prepare a conditioning agent for standby;
(2) Weighing serpentine powder and high borosilicate glass powder according to parts by weight, mixing with the hardening and tempering agent prepared in the step (1), adding into a mixer, fully and uniformly mixing, adding into a mixer, fully mixing for 35 minutes, destroying pseudo particles in the raw materials, and fully and uniformly mixing again to prepare a coating basic raw material;
(3) Weighing hydroxypropyl methyl cellulose and water according to parts by weight, heating the water to 45 ℃, adding the hydroxypropyl methyl cellulose into the water, and fully stirring to fully dissolve the hydroxypropyl methyl cellulose in warm water to prepare an aqueous solution of the hydroxypropyl methyl cellulose;
(4) Mixing the coating base material prepared in the step (2) with the hydroxypropyl methyl cellulose aqueous solution prepared in the step (3), and fully stirring to prepare the pasty serpentine composite anti-oxidation coating.
The embodiment relates to application of serpentine composite anti-oxidation coating for protecting metal materials in protecting metal materials.
Spraying the serpentine composite anti-oxidation coating prepared in the embodiment on the surface of the steel to be subjected to the high-temperature heating process at 1000-1330 ℃, wherein the spraying thickness is 1-2mm, and after the coating is air-dried, adding the steel into a heating furnace to be subjected to the high-temperature heating process. After the high-temperature process treatment is finished, the steel is discharged from the furnace, the coating on the surface of the steel naturally drops off from the steel along with the reduction of the temperature of the surface of the steel, or the coating on the surface of the steel can drop off by lightly blowing by adopting a fan, and then the subsequent process is carried out.
As shown in fig. 1, fig. 1 is a state diagram of the steel product prepared in this embodiment after the serpentine composite anti-oxidation coating prepared in this embodiment is coated, and after the high temperature process is finished, it can be seen from the diagram that the coating is naturally separated from the steel product, and no oxide layer or no decarburized layer appears on the surface of the steel product, which indicates that the serpentine composite anti-oxidation coating prepared in this embodiment plays a good role in protecting the steel product when the high temperature process is performed.
Example 2
The serpentine composite anti-oxidation coating for protecting the metal material is prepared from the following raw materials in parts by weight: serpentine powder: 42, high borosilicate glass powder: 8, silicon carbide powder: 0.8, silicon powder: 0.25, sodium hexametaphosphate: 1.2, hydroxypropyl methylcellulose: 1.3, water: 38.
mg in serpentine powder described in this example 6 [Si 4 O 10 ](OH) 8 The mass percentage of the particles is more than or equal to 95 percent, and the particle size is less than 300 meshes; the mass percentage of silicon dioxide and boron oxide in the high borosilicate glass powder is more than or equal to 93 percent, and the grain diameter is less than 10 mu m; the mass percentage of SiC in the silicon carbide powder is more than or equal to 98 percent, and the grain diameter is less than 50 mu m; the mass percentage of Si in the silicon powder is more than or equal to 95 percent, and the grain diameter is less than 20 mu m; the sodium hexametaphosphate and the hydroxypropyl methylcellulose are industrial pure raw materials.
The preparation method of the serpentine composite anti-oxidation coating for protecting the metal material comprises the following steps:
(1) Weighing silicon carbide powder, silicon powder and sodium hexametaphosphate according to parts by weight, and fully and uniformly mixing to prepare a conditioning agent for standby;
(2) Weighing serpentine powder and high borosilicate glass powder according to parts by weight, mixing with the hardening and tempering agent prepared in the step (1), adding into a mixer, fully and uniformly mixing, adding into a mixer, fully mixing for 30 minutes, destroying pseudo particles in the raw materials, and fully and uniformly mixing again to prepare a coating basic raw material;
(3) Weighing hydroxypropyl methylcellulose and water according to parts by weight, heating the water to 50 ℃, adding the hydroxypropyl methylcellulose into the water, and fully stirring to fully dissolve the hydroxypropyl methylcellulose in warm water to prepare an aqueous solution of the hydroxypropyl methylcellulose;
(4) Mixing the coating base material prepared in the step (2) with the hydroxypropyl methyl cellulose aqueous solution prepared in the step (3), and fully stirring to prepare the pasty serpentine composite anti-oxidation coating.
The embodiment relates to application of serpentine composite anti-oxidation coating for protecting metal materials in protecting metal materials.
Spraying the serpentine composite anti-oxidation coating prepared in the embodiment on the surface of steel to be subjected to the high-temperature heating process at 1060-1300 ℃, wherein the spraying thickness is 1-2mm, and after the coating is air-dried, adding the steel into a heating furnace to be subjected to the high-temperature heating process. After the high-temperature process treatment is finished, the steel is discharged, the coating on the surface of the steel naturally drops off from the steel along with the reduction of the temperature of the surface of the steel, or the coating on the surface of the steel can drop off by lightly blowing by adopting a fan, and then the subsequent process is carried out, so that an oxide layer and a decarburized layer cannot be seen on the surface of the steel from which the coating is removed, and the serpentine composite anti-oxidation coating prepared by the embodiment has good surface protection effect on the high-temperature process of the steel.
Example 3
The serpentine composite anti-oxidation coating for protecting the metal material is prepared from the following raw materials in parts by weight: serpentine powder: 52, high borosilicate glass powder: 2, silicon carbide powder: 3, silicon powder: 1, sodium hexametaphosphate: 0.35, hydroxypropyl methylcellulose: 1.4, water: 45.
mg in serpentine powder described in this example 6 [Si 4 O 10 ](OH) 8 The mass percentage of the particles is more than or equal to 95 percent, and the particle size is less than 300 meshes; the mass percentage of silicon dioxide and boron oxide in the high borosilicate glass powder is more than or equal to 93 percent, and the grain diameter is less than 10 mu m; the mass percentage of SiC in the silicon carbide powder is more than or equal to 98 percent, and the grain diameter is less than 50 mu m; the mass percentage of Si in the silicon powder is more than or equal to 95 percent, and the grain diameter is less than 20 mu m; the sodium hexametaphosphate and the hydroxypropyl methylcellulose are industrial pure raw materials.
The preparation method of the serpentine composite anti-oxidation coating for protecting the metal material comprises the following steps:
(1) Weighing silicon carbide powder, silicon powder and sodium hexametaphosphate according to parts by weight, and fully and uniformly mixing to prepare a conditioning agent for standby;
(2) Weighing serpentine powder and high borosilicate glass powder according to parts by weight, mixing with the hardening and tempering agent prepared in the step (1), adding into a mixer, fully and uniformly mixing, then adding into a mixer, fully mixing for 40 minutes, destroying pseudo particles in the raw materials, and fully and uniformly mixing again to prepare a coating basic raw material;
(3) Weighing hydroxypropyl methyl cellulose and water according to parts by weight, heating the water to 40 ℃, adding the hydroxypropyl methyl cellulose into the water, and fully stirring to fully dissolve the hydroxypropyl methyl cellulose in warm water to prepare an aqueous solution of the hydroxypropyl methyl cellulose;
(4) Mixing the coating base material prepared in the step (2) with the hydroxypropyl methyl cellulose aqueous solution prepared in the step (3), and fully stirring to prepare the pasty serpentine composite anti-oxidation coating.
The embodiment relates to application of serpentine composite anti-oxidation coating for protecting metal materials in protecting metal materials.
Spraying the serpentine composite anti-oxidation coating prepared in the embodiment on the surface of steel to be subjected to the high-temperature heating process at 960-1250 ℃ to obtain a sprayed thickness of 1-2mm, and after the coating is air-dried, adding the steel into a heating furnace to be subjected to the high-temperature heating process. After the high-temperature process treatment is finished, the steel is discharged, the coating on the surface of the steel naturally drops off from the steel along with the reduction of the temperature of the surface of the steel, or the coating on the surface of the steel can drop off by lightly blowing by adopting a fan, and then the subsequent process is carried out, so that an oxide layer and a decarburized layer cannot be seen on the surface of the steel from which the coating is removed, and the serpentine composite anti-oxidation coating prepared by the embodiment has good surface protection effect on the high-temperature process of the steel.
Example 4
The serpentine composite anti-oxidation coating for protecting the metal material is prepared from the following raw materials in parts by weight: serpentine powder: 50, high borosilicate glass powder: 6, silicon carbide powder: 2.5, silicon powder: 0.75, sodium hexametaphosphate: 1.5, hydroxypropyl methylcellulose: 1.4, water: 44.
mg in serpentine powder described in this example 6 [Si 4 O 10 ](OH) 8 The mass percentage of the particles is more than or equal to 95 percent, and the particle size is less than 300 meshes; the mass percentage of silicon dioxide and boron oxide in the high borosilicate glass powder is more than or equal to 93 percent, and the grain diameter is less than 10 mu m; the mass percentage of SiC in the silicon carbide powder is more than or equal to 98 percent, and the grain diameter is less than 50 mu m; the mass percentage of Si in the silicon powder is more than or equal to 95 percent, and the grain diameter is less than 20 mu m; the sodium hexametaphosphate and the hydroxypropyl methylcellulose are industrial pure raw materials.
The preparation method of the serpentine composite anti-oxidation coating for protecting the metal material comprises the following steps:
(1) Weighing silicon carbide powder, silicon powder and sodium hexametaphosphate according to parts by weight, and fully and uniformly mixing to prepare a conditioning agent for standby;
(2) Weighing serpentine powder and high borosilicate glass powder according to parts by weight, mixing with the hardening and tempering agent prepared in the step (1), adding into a mixer, fully and uniformly mixing, adding into a mixer, fully mixing for 33 minutes, destroying pseudo particles in the raw materials, and fully and uniformly mixing again to prepare a coating basic raw material;
(3) Weighing hydroxypropyl methylcellulose and water according to parts by weight, heating the water to 48 ℃, adding the hydroxypropyl methylcellulose into the water, and fully stirring to fully dissolve the hydroxypropyl methylcellulose in warm water to prepare an aqueous solution of the hydroxypropyl methylcellulose;
(4) Mixing the coating base material prepared in the step (2) with the hydroxypropyl methyl cellulose aqueous solution prepared in the step (3), and fully stirring to prepare the pasty serpentine composite anti-oxidation coating.
The embodiment relates to application of serpentine composite anti-oxidation coating for protecting metal materials in protecting metal materials.
Spraying the serpentine composite anti-oxidation coating prepared in the embodiment on the surface of steel to be subjected to the high-temperature heating process at 1020-1310 ℃, wherein the spraying thickness is 1-2mm, and after the coating is air-dried, adding the steel into a heating furnace to be subjected to the high-temperature heating process. After the high-temperature process treatment is finished, the steel is discharged, the coating on the surface of the steel naturally drops off from the steel along with the reduction of the temperature of the surface of the steel, or the coating on the surface of the steel can drop off by lightly blowing by adopting a fan, and then the subsequent process is carried out, so that an oxide layer and a decarburized layer cannot be seen on the surface of the steel from which the coating is removed, and the serpentine composite anti-oxidation coating prepared by the embodiment has good surface protection effect on the high-temperature process of the steel.
Example 5
The serpentine composite anti-oxidation coating for protecting the metal material is prepared from the following raw materials in parts by weight: serpentine powder: 45, high borosilicate glass powder: 4, silicon carbide powder: 1.5, silicon powder: 0.65, sodium hexametaphosphate: 0.75, hydroxypropyl methylcellulose: 1.3, water: 42.
mg in serpentine powder described in this example 6 [Si 4 O 10 ](OH) 8 The mass percentage of the particles is more than or equal to 95 percent, and the particle size is less than 300 meshes; the mass percentage of silicon dioxide and boron oxide in the high borosilicate glass powder is more than or equal to 93 percent, and the grain diameter is less than 10 mu m; the mass percentage of SiC in the silicon carbide powder is more than or equal to 98 percent, and the grain diameter is less than 50 mu m; the mass percentage of Si in the silicon powder is more than or equal to 95 percent, and the grain diameter is less than 20 mu m; the sodium hexametaphosphate and the hydroxypropyl methylcellulose are industrial pure raw materials.
The preparation method of the serpentine composite anti-oxidation coating for protecting the metal material comprises the following steps:
(1) Weighing silicon carbide powder, silicon powder and sodium hexametaphosphate according to parts by weight, and fully and uniformly mixing to prepare a conditioning agent for standby;
(2) Weighing serpentine powder and high borosilicate glass powder according to parts by weight, mixing with the hardening and tempering agent prepared in the step (1), adding into a mixer, fully and uniformly mixing, adding into a mixer, fully mixing for 37 minutes, destroying pseudo particles in the raw materials, and fully and uniformly mixing again to prepare a coating basic raw material;
(3) Weighing hydroxypropyl methyl cellulose and water according to parts by weight, heating the water to 43 ℃, adding the hydroxypropyl methyl cellulose into the water, and fully stirring to fully dissolve the hydroxypropyl methyl cellulose in warm water to prepare an aqueous solution of the hydroxypropyl methyl cellulose;
(4) Mixing the coating base material prepared in the step (2) with the hydroxypropyl methyl cellulose aqueous solution prepared in the step (3), and fully stirring to prepare the pasty serpentine composite anti-oxidation coating.
The embodiment relates to application of serpentine composite anti-oxidation coating for protecting metal materials in protecting metal materials.
Spraying the serpentine composite anti-oxidation coating prepared in the embodiment on the surface of steel to be subjected to a high-temperature heating process at 980-1280 ℃, wherein the spraying thickness is 1-2mm, and after the coating is air-dried, adding the steel into a heating furnace to be subjected to the high-temperature heating process. After the high-temperature process treatment is finished, the steel is discharged, the coating on the surface of the steel naturally drops off from the steel along with the reduction of the temperature of the surface of the steel, or the coating on the surface of the steel can drop off by lightly blowing by adopting a fan, and then the subsequent process is carried out, so that an oxide layer and a decarburized layer cannot be seen on the surface of the steel from which the coating is removed, and the serpentine composite anti-oxidation coating prepared by the embodiment has good surface protection effect on the high-temperature process of the steel.
The above-described five embodiments are merely specific examples of the present invention which are exemplified for explaining the present invention, and the present invention is not limited in any way, and any insubstantial changes made from the above matters and forms without departing from the scope of the claims of the present invention should be construed as falling within the scope of the claims of the present invention. The serpentine composite anti-oxidation coating for protecting the metal material can well protect steel in a high-temperature process below 1330 ℃ and avoid an oxidation layer and a decarburization layer on the surface of the steel.
Claims (6)
1. The serpentine composite anti-oxidation coating for protecting the metal material is characterized by being prepared from the following raw materials in parts by weight: serpentine powder: 42-52, high borosilicate glass powder: 2-8, silicon carbide powder: 0.8-3, silica powder: 0.25-1, sodium hexametaphosphate: 0.35-1.5, hydroxypropyl methylcellulose: 1.2-1.4, water: 38-45;
the preparation method of the serpentine composite anti-oxidation coating for protecting the metal material comprises the following steps:
(1) Weighing silicon carbide powder, silicon powder and sodium hexametaphosphate according to parts by weight, and fully and uniformly mixing to prepare a conditioning agent for standby;
(2) Weighing serpentine powder and high borosilicate glass powder according to parts by weight, mixing with the hardening and tempering agent prepared in the step (1), adding into a mixer, fully and uniformly mixing, then adding into a mixer, fully mixing for 30-40 minutes, destroying pseudo particles in the raw materials, and fully and uniformly mixing again to prepare a coating basic raw material;
(3) Weighing hydroxypropyl methylcellulose and water according to parts by weight, heating the water to 40-50 ℃, adding the hydroxypropyl methylcellulose into the water, and fully stirring to fully dissolve the hydroxypropyl methylcellulose in warm water to prepare an aqueous solution of the hydroxypropyl methylcellulose;
(4) Mixing the coating base material prepared in the step (2) with the hydroxypropyl methyl cellulose aqueous solution prepared in the step (3), and fully stirring to prepare a pasty serpentine composite anti-oxidation coating;
when the serpentine composite anti-oxidation coating for protecting the metal material is used in a high-temperature process of the metal material, the prepared coating is added into a spray gun before the high-temperature process of the metal material, a layer of coating with the thickness of 1-2mm is directly sprayed on the surface of the metal material by the spray gun, after the coating is dried, the coating is directly sent into a heating furnace for high-temperature process treatment, after the high-temperature process treatment is finished, the metal material is discharged from the heating furnace, the coating is naturally separated from the metal material along with the reduction of the temperature of the metal material, and the coating is directly separated from the surface of the metal material, so that the subsequent processing process can be carried out.
2. The serpentine composite anti-oxidation coating for protecting metal materials according to claim 1, which is characterized by being prepared from the following raw materials in parts by weight: serpentine powder: 47, high borosilicate glass powder: 5, silicon carbide powder: 2, silicon powder: 0.5, sodium hexametaphosphate: 1, hydroxypropyl methylcellulose: 1.2, water: 41.
3. the serpentine composite oxidation preventing coating for protecting a metal material according to claim 1, wherein: mg in the serpentine powder 6 [Si 4 O 10 ](OH) 8 The mass percentage of the particles is more than or equal to 95 percent, and the particle size is less than 300 meshes; the mass percentage of silicon dioxide and boron oxide in the high borosilicate glass powder is more than or equal to 93 percent, and the grain diameter is less than 10 mu m; the mass percentage of SiC in the silicon carbide powder is more than or equal to 98 percent, and the grain diameter is less than 50 mu m; the mass percentage of Si in the silicon powder is more than or equal to 95 percent, and the grain diameter is less than 20 mu m; the sodium hexametaphosphate and the hydroxypropyl methylcellulose are industrial pure raw materials.
4. A method for preparing a serpentine composite anti-oxidation coating for protecting a metal material as set forth in any one of claims 1 to 3, comprising the steps of:
(1) Weighing silicon carbide powder, silicon powder and sodium hexametaphosphate according to parts by weight, and fully and uniformly mixing to prepare a conditioning agent for standby;
(2) Weighing serpentine powder and high borosilicate glass powder according to parts by weight, mixing with the hardening and tempering agent prepared in the step (1), adding into a mixer, fully and uniformly mixing, then adding into a mixer, fully mixing for 30-40 minutes, destroying pseudo particles in the raw materials, and fully and uniformly mixing again to prepare a coating basic raw material;
(3) Weighing hydroxypropyl methylcellulose and water according to parts by weight, heating the water to 40-50 ℃, adding the hydroxypropyl methylcellulose into the water, and fully stirring to fully dissolve the hydroxypropyl methylcellulose in warm water to prepare an aqueous solution of the hydroxypropyl methylcellulose;
(4) Mixing the coating base material prepared in the step (2) with the hydroxypropyl methyl cellulose aqueous solution prepared in the step (3), and fully stirring to prepare the pasty serpentine composite anti-oxidation coating.
5. The use of a serpentine composite anti-oxidation coating for protecting a metal material according to claim 1.
6. The application of the anti-oxidation coating prepared by the method of claim 4 in protecting metal materials.
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| CN111607257A (en) * | 2020-05-22 | 2020-09-01 | 唐山元力科技有限公司 | Decarburization-resistant protective coating in spring steel billet heating process and application thereof |
| CN113321949A (en) * | 2021-06-02 | 2021-08-31 | 中钢南京环境工程技术研究院有限公司 | Method for preparing anti-oxidation coating from used lithium battery sagger |
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| CN111607257A (en) * | 2020-05-22 | 2020-09-01 | 唐山元力科技有限公司 | Decarburization-resistant protective coating in spring steel billet heating process and application thereof |
| CN113321949A (en) * | 2021-06-02 | 2021-08-31 | 中钢南京环境工程技术研究院有限公司 | Method for preparing anti-oxidation coating from used lithium battery sagger |
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