CN110699627A - Corrosion-resistant electric arc spraying powder core wire material and coating preparation method - Google Patents
Corrosion-resistant electric arc spraying powder core wire material and coating preparation method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
- C23C4/131—Wire arc spraying
Abstract
The invention discloses a corrosion-resistant cored wire for electric arc spraying and a preparation method of a coating, and belongs to the technical field of corrosion and protection of metal surfaces. The cored wire consists of a coating layer and a powder core, wherein the coating layer is made of stainless steel, the filling rate of the powder core is 25-35%, and the powder core of the cored wire comprises the following components in percentage by mass: cr (chromium) component2C3Powder: 10% -30%, WC powder: 1% -8%, V powder: 1% -8%, Mo powder: 4% -15%, Nb powder: 1% -6%, Ni powder: 1% -18%, Cr powder: 5% -20%, Al powder: 2 to 12 percent of the total weight of the alloy, and the balance of Fe powder. When the coating is prepared, the surface treatment is needed firstly, and then the spraying is needed. Coatings prepared from the inventive wires andthe substrate has high bonding strength, excellent high-temperature oxidation resistance and corrosion resistance, and can obviously prolong the service life of some devices in severe working environments such as high temperature.
Description
Technical Field
The invention belongs to the technical field of metal surface corrosion and protection, and particularly relates to a corrosion-resistant electric arc spraying powder core wire and a coating preparation method.
Background
The failure of steel components caused by abrasion and corrosion causes huge economic loss and potential safety hazard, which are always concerned by countries in the world, and various protection means are increasingly concerned by people. In a high-temperature environment, key parts of some mechanical equipment are very easy to lose efficacy due to high-temperature corrosion, so that huge economic loss and potential safety hazards are caused. The thermal spraying technology can prepare a high-performance coating on the surface of a steel member, can effectively improve the surface performance of the steel member, plays a role in wear resistance and corrosion resistance, and is widely applied to thermal protection or surface protection of some important mechanical parts. The surface treatment technology is one of effective methods for improving the wear resistance and corrosion resistance of the surface of a material, the electric arc spraying technology is one of important surface technologies, and the structure and performance of a coating are further improved along with the development of the high-speed electric arc spraying technology in recent years, so that the electric arc spraying technology is more widely applied.
The existing electric arc spraying technology is successfully applied to the protection of a steel structure, so that the service life of the steel structure is greatly prolonged, and the resource waste is reduced. For example, a chinese patent, application number: 201810741571.9, the name is: a method for preparing aluminum-based composite cored wire containing ceramic particles and a coating, which can be applied to the protection of wear resistance, corrosion resistance, skid resistance and the like on the surface of marine facility equipment in the environments of rivers, oceans and the like. A Chinese patent, application number is: 201810856873.0, the name is: a ZnAlMgSiB anticorrosive coating for a steel structure and a preparation method thereof are suitable for preparing an anticorrosive coating for a large-scale steel structure. A Chinese patent, application number is: 201810549939.1, the name is: a metal/polymer composite cored wire, a metal/polymer composite coating and a preparation method thereof can be applied to the anticorrosion protection of the surfaces of some industrial parts in the marine environment. The research and application of corrosion and wear resistant coatings under severe conditions, such as high temperature environments, remains a challenge. Therefore, in order to solve the problems that some steel components are under high temperature condition in the production process, are strongly washed by high-speed powder-containing airflow for a long time and are corroded and worn by acid-base oxides in dust, the service life of the steel components is prolonged, and the resource waste is reduced, a coating with high bonding strength, good corrosion resistance, wear resistance and other comprehensive properties needs to be sprayed on the surface of the protection component.
Disclosure of Invention
The invention aims to provide a corrosion-resistant electric arc spraying cored wire and a coating preparation method, the invention adopts a supersonic speed electric arc spraying mode to spray the prepared cored wire onto a steel substrate, can form a continuous and compact electric arc spraying coating, and has good high temperature resistance, scouring resistance, wear resistance and corrosion resistance, and the technical scheme adopted by the invention is as follows:
the corrosion-resistant electric arc spraying cored wire consists of a coating layer and a powder core, wherein the powder core of the wire comprises the following components in percentage by mass: cr (chromium) component2C3Powder: 10% -30%, WC powder: 1% -8%, V powder: 1% -8%, Mo powder: 4% -15%, Nb powder: 1% -6%, Ni powder: 1% -18%, Cr powder: 5% -20%, Al powder: 2 to 12 percent of the total weight of the alloy, and the balance of Fe powder.
Preferably, the powder core comprises the following components in percentage by mass: cr (chromium) component2C3Powder: 12% -28%, WC powder: 1% -6%, V powder: 1% -6%, Mo powder: 6% -12%, Nb powder: 1% -5%, Ni powder: 1% -16%, Cr powder: 6% -18%, Al powder: 5 to 12 percent of Fe powder and the balance of Fe powder.
Preferably, the diameter of the powder core wire is 1.8-2.5 mm.
Preferably, the stainless steel strip for covering the dust core wire is 304 stainless steel strip, 316 stainless steel strip or the like.
Preferably, the filling rate of the powder core in the powder core wire is 25-35%.
Meanwhile, the spraying method for spraying the corrosion-resistant arc spraying powder core wire material is provided, and comprises the following steps:
the method comprises the following steps: preparing a powder core according to the proportion, and obtaining a powder core wire material through powder mixing, molding and drawing;
step two: cleaning and sandblasting coarsening treatment, removing stains and oil stains on the surface of the coated substrate by adopting an organic solvent, and then carrying out sandblasting coarsening treatment on the surface of the substrate to remove rusted substances on the surface of the substrate and form a uniform and uneven rough surface on the surface of the substrate;
step three: and (2) spraying the cored wire on the pretreated base material by adopting an electric arc spraying process to prepare a coating, wherein the spraying process parameters are as follows: the atomizing air pressure is 0.5-0.75MPa, the spraying current is 200-250A, the spraying voltage is 30-35V, and the spraying distance is 180-250 mm; the sample is preheated before spraying, the preheating temperature is 100 ℃ and 250 ℃, an intermittent spraying method is adopted, the moving speed of a spray gun is 20-90mm/s, and the process is repeated for 2-5 times.
Further, the thickness of the coating prepared from the wire is 0.3-1 mm.
The invention provides a corrosion-resistant electric arc spraying powder core wire material and a preparation method of the coating, wherein the average bonding strength of the coating prepared by a supersonic electric arc spraying technology is more than 33Mpa, and the average microhardness of the coating is more than 320HV and is superior to 152.92HV of base steel. The coating has good high-temperature oxidation corrosion resistance, and an oxidation kinetic curve is in a parabolic rule, so that the coating can quickly and effectively form a protective oxide film in the high-temperature oxidation process, can slow down the further oxidation, and plays a good role in protection.
Drawings
FIG. 1 is an SEM topography of the surface of a coating of example 1 of the present invention;
FIG. 2 is an XRD pattern of a coating of example 1 of the present invention;
FIG. 3 is a graph of the high temperature oxidation experiments of the coating and substrate of example 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description is given by way of example and with reference to the accompanying drawings, and the essential features and significant advantages of the present invention will be further clarified by the following examples, but the present invention is not limited to the following examples.
Example 1:
according to one aspect of the invention, the embodiment provides a corrosion-resistant electric arc spraying powder core wire and a coating preparation method, the powder core wire consists of a coating layer and a powder core, the coating layer is a stainless steel narrow strip, the powder core accounts for 30% of the total wire material amount, and the stainless steel strip is 304 stainless steel;
the powder core is prepared from the following substances in percentage by mass: cr (chromium) component2C3Powder: 20%, WC powder: 3%, V powder: 3%, Mo powder: 8%, Nb powder: 2.4%, Ni powder: 14%, Cr powder: 9%, Al powder: 8 percent, and the balance being Fe powder; rolling into powder core wire.
The wire prepared by adopting the powder core proportion is used for preparing an electric arc spraying coating on a 45 steel substrate which is subjected to oil removal, rust removal, sand blasting and coarsening, and the used process parameters are as follows: the voltage is 35V; current 210-230A; the spraying distance is 200 mm; the atomizing air pressure was 0.65 MPa. The sample is preheated before spraying, the preheating temperature is 100 ℃, the moving speed of a spray gun is 30mm/s, and the batch type spraying is carried out for 2 times.
Example 2:
according to one aspect of the invention, the embodiment provides a corrosion-resistant electric arc spraying powder core wire and a coating preparation method, the powder core wire consists of a coating layer and a powder core, the coating layer is a stainless steel narrow strip, the powder core accounts for 30% of the total wire material amount, and the stainless steel strip is 304 stainless steel;
the powder core is prepared from the following substances in percentage by mass: cr (chromium) component2C3Powder: 22%, WC powder: 5%, V powder: 4%, Mo powder: 7%, Nb powder: 4%, Ni powder: 15%, Cr powder: 11%, Al powder: 10 percent, and the balance being Fe powder; rolling ofForming the cored wires.
The wire prepared by adopting the powder core proportion is used for preparing an electric arc spraying coating on a 45 steel substrate which is subjected to oil removal, rust removal, sand blasting and coarsening, and the used process parameters are as follows: the voltage is 30V; current 230-; the spraying distance is 200 mm; the atomizing air pressure was 0.7 MPa. The sample is preheated before spraying, the preheating temperature is 100 ℃, the moving speed of a spray gun is 35mm/s, and the batch type spraying is carried out for 2 times.
Example 3:
according to one aspect of the invention, the embodiment provides a corrosion-resistant electric arc spraying powder core wire and a coating preparation method, the powder core wire consists of a coating layer and a powder core, the coating layer is a stainless steel narrow strip, the powder core accounts for 30% of the total wire material amount, and the stainless steel strip is made of 316 stainless steel;
the powder core is prepared from the following substances in percentage by mass: cr (chromium) component2C3Powder: 23%, WC powder: 6%, V powder: 5.5%, Mo powder: 6%, Nb powder: 4.6%, Ni powder: 16%, Cr powder: 12%, Al powder: 12 percent and the balance of Fe powder; rolling into powder core wire.
The wire prepared by adopting the powder core proportion is used for preparing an electric arc spraying coating on a 45 steel substrate which is subjected to oil removal, rust removal, sand blasting and coarsening, and the used process parameters are as follows: the voltage is 35V; current 220-; the spraying distance is 210 mm; the atomizing air pressure was 0.65 MPa. The sample is preheated before spraying, the preheating temperature is 150 ℃, the moving speed of a spray gun is 50mm/s, and the intermittent spraying is carried out for 3 times.
Example 4:
according to one aspect of the present invention, there is provided a Fe-based powder core wire for corrosion-resistant arc spraying and a method for producing the same, the powder core wire comprising a cladding layer and a powder core, the cladding layer being a narrow stainless steel strip, the powder core being 30% by weight of the total wire material, the stainless steel strip being 304 stainless steel;
the powder core is prepared from the following substances in percentage by mass: cr (chromium) component2C3Powder: 25%, WC powder: 3%, V powder: 4%, Mo powder: 10.2%, Nb powder: 3.6%, Ni powder: 2%, Cr powder: 15%, Al powder: 9 percent of Fe powder; rolling into powder core wire.
The wire prepared by adopting the powder core proportion is used for preparing an electric arc spraying coating on a 45 steel substrate which is subjected to oil removal, rust removal, sand blasting and coarsening, and the used process parameters are as follows: the voltage is 35V; current 230-; the spraying distance is 200 mm; the atomizing air pressure was 0.65 MPa. The sample is preheated before spraying, the preheating temperature is 200 ℃, the moving speed of a spray gun is 55mm/s, and the intermittent spraying is carried out for 3 times.
Example 5:
according to one aspect of the present invention, there is provided a Fe-based powder core wire for corrosion-resistant arc spraying and a method for producing the same, the powder core wire comprising a cladding layer and a powder core, the cladding layer being a narrow stainless steel strip, the powder core being 30% by weight of the total wire material, the stainless steel strip being 316 stainless steel;
the powder core is prepared from the following substances in percentage by mass: cr (chromium) component2C3Powder: 23%, WC powder: 2%, V powder: 3%, Mo powder: 9%, Nb powder: 4%, Ni powder: 4%, Cr powder: 16%, Al powder: 10 percent, and the balance being Fe powder; rolling into powder core wire.
The wire prepared by adopting the powder core proportion is used for preparing an electric arc spraying coating on a 45 steel substrate which is subjected to oil removal, rust removal, sand blasting and coarsening, and the used process parameters are as follows: the voltage is 30V; current 210-230A; the spraying distance is 200 mm; the atomizing air pressure was 0.7 MPa. The sample is preheated before spraying, the preheating temperature is 200 ℃, the moving speed of a spray gun is 60mm/s, and the intermittent spraying is carried out for 3 times.
Example 6:
according to one aspect of the present invention, there is provided a Fe-based powder core wire for corrosion-resistant arc spraying and a method for producing the same, the powder core wire comprising a cladding layer and a powder core, the cladding layer being a narrow stainless steel strip, the powder core being 30% by weight of the total wire material, the stainless steel strip being 316 stainless steel;
the powder core is prepared from the following substances in percentage by mass: cr (chromium) component2C3Powder: 22%, WC powder: 4%, V powder: 5%, Mo powder: 8%, Nb powder: 4.3 percent of the total weight of the mixture,ni powder: 6%, Cr powder: 16.4%, Al powder: 11.2 percent of Fe powder in balance; rolling into powder core wire.
The wire prepared by adopting the powder core proportion is used for preparing an electric arc spraying coating on a 45 steel substrate which is subjected to oil removal, rust removal, sand blasting and coarsening, and the used process parameters are as follows: the voltage is 35V; current 220-; the spraying distance is 210 mm; the atomizing air pressure was 0.65 MPa. The sample is preheated before spraying, the preheating temperature is 250 ℃, the moving speed of a spray gun is 70mm/s, and the batch spraying is carried out for 4 times.
(1) And performance test: the performance tests comprise hardness, bonding strength, abrasion weight loss rate and self-corrosion current density tests, the Vickers hardness of the wires prepared in the examples 1 to 6 is measured on an HWDM-3 hardness tester, the load is 9806mN, and the loading time is 15 s; wherein, the bonding strength between the coating and the substrate is measured on a UTM5105 electronic universal tester produced by Shenzhen Sansi technical and scientific Co., Ltd according to the ASTM C633 tensile test standard; measuring a polarization curve at a Gamry750 electrochemical workstation, and performing numerical fitting on a polarization curve test result by using Echem Analyst software to obtain the self-corrosion current density; a pin disc type abrasive wear test method is adopted, an ML-100 type abrasive wear test machine is used for carrying out an abrasion weight loss test, the sample feeding amount is 4mm/r, the rotating speed of a rotating disc is 120r/min, 600-mesh SiC sand paper is adopted as abrasive particles, and the performance test data are shown in Table 1.
TABLE 1 Performance data
(2) Scanning electron microscope analysis is carried out on the coating prepared from the powder core wire material in the embodiment 1 of the invention, and FIG. 1 is a surface SEM topography of the electric arc spraying coating of the invention, and as can be seen from FIG. 1, the hard ceramic phase is not melted at high temperature and is distributed in a round particle shape; the metal powder core material and the stainless steel are melted and distributed in a water-poise shape under the high-speed airflow injection. It can also be seen from fig. 1 that the ceramic phase is well fused with the metal phase. X-ray diffraction experiments were carried out on the coatings prepared in example 1, using RigakuD/MAX 2500V type X-ray diffractometer, tube voltage is 40kV, tube current is 150mA, scanning angle is 20-80 degrees, and scanning speed is 6 degrees/min. The coating prepared in example 1 was subjected to a high temperature oxidation test, with the coating selected as the test sample and 45 steel as the control sample, the specification: 20X 10X 0.8 mm; the test sample is subjected to a high-temperature oxidation experiment in a muffle furnace at 700 ℃, taken out every 10 hours, cooled in air and weighed, the total cycle experiment time is 100 hours, and the high-temperature oxidation power curve of the test sample is drawn according to the relationship between the oxidation weight gain of the coating on a unit area and the time, as shown in figure 2. As can be seen from the oxidation power curves of the coating and the matrix, the oxidation weight gain of the coating in unit area is obvious 10 hours before high-temperature oxidation, and then the weight gain curve tends to be smooth and basically does not increase, is in a parabolic rule, and shows good high-temperature oxidation resistance. As shown in FIG. 3, the XRD pattern of the oxidized surface of the coating of example 1 consists essentially of Fe3O4、Al2O3、NiCr2O4、Cr2O3、Fe2O3And the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (7)
1. The utility model provides a corrosion-resistant electric arc spraying uses powder core silk material which characterized in that: the cored wire consists of a coating layer and a powder core, wherein the coating layer is a stainless steel band, and the powder core of the cored wire comprises the following components in percentage by mass: cr (chromium) component2C3Powder: 10% -30%, WC powder: 1% -8%, V powder: 1% -8%, Mo powder: 4% -15%, Nb powder: 1% -6%, Ni powder: 1% -18%, Cr powder: 5% -20%, Al powder: 2 to 12 percent of the total weight of the alloy, and the balance of Fe powder.
2. The corrosion resistant electric arc spray cored wire of claim 1, wherein: the powder core comprises the following components by mass percentThe ratio is as follows: cr (chromium) component2C3Powder: 12% -28%, WC powder: 1% -6%, V powder: 1% -6%, Mo powder: 6% -12%, Nb powder: 1% -5%, Ni powder: 1% -16%, Cr powder: 6% -18%, Al powder: 5 to 12 percent of Fe powder and the balance of Fe powder.
3. The corrosion resistant electric arc spray cored wire of claim 1, wherein: the diameter of the powder core wire is 1.8-2.5 mm.
4. The erosion resistant electric arc spray powder core wire of claim 1, wherein the wire coating is a 304 stainless steel strip or a 316 stainless steel strip.
5. The corrosion resistant electric arc spray cored wire of claim 1, wherein the fill factor of said powder core is 25-35%.
6. A method of making a coating from a corrosion resistant electric arc sprayed cored wire of claim 1, comprising the steps of:
the method comprises the following steps: preparing a powder core according to the proportion, and obtaining a powder core wire material through powder mixing, molding and drawing;
step two: cleaning and sandblasting coarsening treatment, removing stains and oil stains on the surface of the sprayed substrate by adopting an organic solvent, and then carrying out sandblasting coarsening treatment on the surface of the substrate to remove rusted substances on the surface of the substrate and form a uniform and uneven rough surface on the surface of the substrate;
step three: and (2) spraying the cored wire on the pretreated base material by adopting an electric arc spraying process to prepare a coating, wherein the spraying process parameters are as follows: the atomizing air pressure is 0.5-0.75MPa, the spraying current is 200-250A, the spraying voltage is 30-35V, and the spraying distance is 180-250 mm; the sample is preheated before spraying, the preheating temperature is 100 ℃ and 250 ℃, an intermittent spraying method is adopted, the moving speed of a spray gun is 20-90mm/s, and the process is repeated for 2-5 times.
7. The method of making a coating of corrosion resistant arc sprayed cored wire of claim 6, wherein: the thickness of the coating prepared from the wire is 0.3-1 mm.
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| CN115478243A (en) * | 2021-06-15 | 2022-12-16 | 贵州电网有限责任公司 | Marine environment corrosion resistant high-aluminum coating and spraying method thereof |
| CN115478195A (en) * | 2021-06-15 | 2022-12-16 | 贵州电网有限责任公司 | Al-Mg anticorrosive paint for steel, cored wire and spraying method thereof |
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| CN104694840A (en) * | 2013-12-10 | 2015-06-10 | 有研粉末新材料（北京）有限公司 | Power core wire material for preparing crankshaft remanufacturing coating by virtue of electric arc spraying method and application of power core wire material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115478243A (en) * | 2021-06-15 | 2022-12-16 | 贵州电网有限责任公司 | Marine environment corrosion resistant high-aluminum coating and spraying method thereof |
| CN115478195A (en) * | 2021-06-15 | 2022-12-16 | 贵州电网有限责任公司 | Al-Mg anticorrosive paint for steel, cored wire and spraying method thereof |
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Application publication date: 20200117 |