CN105803376B - A kind of resistance to high temperature oxidation wear-resistant coating preparation method - Google Patents
A kind of resistance to high temperature oxidation wear-resistant coating preparation method Download PDFInfo
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- CN105803376B CN105803376B CN201610155981.6A CN201610155981A CN105803376B CN 105803376 B CN105803376 B CN 105803376B CN 201610155981 A CN201610155981 A CN 201610155981A CN 105803376 B CN105803376 B CN 105803376B
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- high temperature
- resistance
- temperature oxidation
- resisting steel
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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
- 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
Abstract
A kind of resistance to high temperature oxidation wear-resistant coating preparation method, its step are：First by heat resisting steel degreasing degreasing；Then blasting treatment is carried out to the surface of heat resisting steel；Then NiCoCrAlYTa+10%Al is prepared on the surface of heat resisting steel using Supersonic Plasma Spraying technology2O3Resistance to high temperature oxidation wear-resistant coating.By the present invention, coating deposition efficiency is high, cost is low, thickness uniform, controllable, can prepare and is well combined with matrix, and anti-wear performance and the excellent coating of high temperature oxidation resistance, so as to significantly increase the performance of associated components, extend its service life, and improve product quality.
Description
Technical field
The invention belongs to technical field of material surface treatment, is specifically related to one kind and prepares high temperature resistance in heat-resisting steel surface
The method for aoxidizing wear-resistant coating.
Background technology
With the high speed development of national economy, high quality cold-reduced sheet demand is continuously increased, is adapted to continuous, large quantities of
The continuous annealing production line of amount production is developed.In continuous annealing furnace, furnace roller working condition is severe, bear mechanical stress and
Heat erosion, its service life and surface quality directly influence the operating rate and quality of product.Thermal spraying protective coating is wide
It is general to be applied in annealing furnace on critical component.Due to required after annealing belt steel surface must no marking and the defects of slight scar,
Therefore furnace roller surface spraying coating quality state is most important.
Frequently with techniques such as plasma spraying, HVAF, detonation flame sprayings in furnace roller preparation technology of coating technology
Method.Such as：PRAXAIR uses Detonation Spraying method, and nickel is sprayed to the steel rider of less than 700 DEG C of low, middle temperature areas
Chromium chromium carbide (NiCr -80%Cr3C2) material；Cobalt base superalloy is sprayed to more than 700 DEG C of high-temperature area steel riders
(CoTaSiCrAlY+Al2O3) composite.Kawasaki company is in Si3N4ZrSiO is sprayed on core4, ZrO is sprayed on SiC cores2System
Into furnace roller, in 1200 DEG C of continuous annealing furnaces, its service life was up to 24 months, but because used core material is pottery
Ceramic material, although closely knit, hardness is high, the shortcomings of shaping is difficult, yield rate is low, fragile, thermal shock resistance is bad be present.Newly
Day, Inland Steel was in general heat resisting steel surface spraying SiC+Si powder+W powder, Si3N4+ Si powder+W or SiC+Si3N4Made of+Si powder+W
Furnace roller, service life is higher than 2000 hours at 750 DEG C；Boride is sprayed on SCH22（ZrB2、MoB、TiB2、CrB、WB）'s
Composite ceramic coat furnace roller, long-term use of 850 DEG C of temperature ＞；Plasma spraying Y2O3-ZrO2Furnace roller, the service life at 800 DEG C
For 8 months, 900 DEG C when be 2 months.Nagoya factory of Nippon Steel Corporation then uses explosive spray coating, is sprayed on furnace roller surface
Apply CoCrAlY-Y2O3+CrB2Coating, there is excellent anti-buildup performance, but detonation flame spraying is less efficient, general blast frequency
Rate is no more than 4-10 times/s, and this can cause obvious streak marks in roll surface, so as to constrain the extensive use of the technology.
Baosteel machinery plant and the prepared superalloy MCrAlY coatings of Chinese Agricultural Machinery institute surface engineering technology research and its
With the composite coating of NiCr- carbide, furnace roller surface corrosion and heat resistant can be improved, wear-resisting undermine anti-buildup performance.Wuhan industry is big
Learn and Wuhan Iron and Steel Company first sprays Ni based alloy primers on heat-resisting alloy steel (NiCrW) surface, then spray Y2O3-ZrO2
With the compound transition zone of Ni based alloys, finally spray with Y2O3-ZrO2Based on surface layer, produce a kind of Novel furnace roller, 920 DEG C
The above life-span, 860~920 DEG C up to 6 months up to 3 months.
Under positive fierce some extreme operating condition environment of development external at present（Such as more than 1100 DEG C of high temperature）The surface treatment of part
Technology, the research and development of these new technologies will turn into the core technology of field of steel production, it is therefore necessary to immediately following paces, develop
New new and high technology, considerable power is provided for the development of China's steel and iron industry.MCrAlY coatings have excellent high temperature resistance
Oxidation and corrosive nature, but hardness is low at high temperature, and serious abrasion be present, it is necessary to improve in steel and iron industry high temperature lehr roller
The high temperature hardness of MCrAlY coatings.For example, increase Ceramic oxide particles obtain high temperature hardness to increase coating.Using thermal spraying side
MCrAlY+ ceramic composite coatings prepared by method have good red hardness, can improve the anti-wear performance of high-temperature component.However,
Traditional HVAF flame stream temperature is low, causes dusty spray more difficult fully melting, deposition of coating in flame stream
Low, production cost is very high；Although plasma spraying fusing point is high, the porosity of coating is high, and bond strength is relatively low, is using
Journey floating coat easily peels off.Therefore, need badly and develop new high-temperature protection coating preparation technology.Supersonic Plasma Spraying combines
The characteristics of HVAF flame flow velocity degree height and high plasma spraying flame stream temperature, high performance MCrAlY+ can be obtained
Ceramic composite coating.The new technology has it in requirement of the steel and iron industry high temperature part to coating high-compactness and high bond strength
Ample scope for abilities.
The content of the invention
The purpose of the present invention is existing anti-wear performance when being on active service for a long time in hot environment for continuous annealing furnace roller
And high temperature oxidation resistance it is not ideal enough the problem of, there is provided a kind of high efficiency, low cost, can prepare and be well combined with matrix
And the resistance to high temperature oxidation wear-resistant coating preparation method of anti-wear performance and the excellent coating of high temperature oxidation resistance.
The technical proposal of the invention is realized in this way：
Resistance to high temperature oxidation wear-resistant coating preparation method of the present invention, is characterized in comprising the following steps：
The first step：By heat resisting steel degreasing degreasing；
Second step：Carry out blasting treatment to the surface of heat resisting steel, sand material be 46# fused alumina zirconias, blasting pressure for 0.2~
0.4MPa, sandblasting distance is 100~200mm；
3rd step：The wear-resisting painting of resistance to high temperature oxidation is prepared on the surface of heat resisting steel using Supersonic Plasma Spraying technology
Layer, spraying current are 150~250A, and compressed air pressure is 0.2~0.5MPa, and propane flow is 1~2.5l/min, spray coating powder
End is NiCoCrAlYTa+10%Al2O3Composite powder, powder size are 5~35 μm, and powder feeding nitrogen flow is 8~16l/min, powder feeding
Speed is 10~50g/min, is sprayed away from for 150~300mm, and it is 300~1500mm/s to walk rifle speed, and spraying overlap joint is 6~10mm,
Coating deposition rate is 10~50 μm/time；And under the conditions of non-powder feeding, first with plasma flame flow to heat resisting steel preheating 1~2
It is secondary, then powder feeding spraying is carried out, resistance to high temperature oxidation wear-resistant coating thickness is prepared as 200~500 μm.
The present invention compared with prior art, has advantages below：
1st, using NiCoCrAlYTa+10%Al2O3Composite powder as heat resisting steel surface high-temp barrier material,
The hexa-atomic alloys of NiCoCrAlYTa have an excellent high temperature oxidation resistance, and Al2O3Possesses excellent wear-resisting, corrosion-resistant, resistance to height
The performances such as temperature, therefore the composite coating has huge development potentiality in continuous annealing furnace high-temperature furnace roller surfacecti proteon field；
2nd, Supersonic Plasma Spraying technology using plasma is thermal source, and the spraying particle at jet-core region and edge is fast
Degree, thermograde are especially low, it is ensured that NiCoCrAlYTa alloy powders and Al2O3Ceramic powders fully melt in the jet, institute
The coating of preparation has more preferable bond strength and less porosity；Flight particle reaches Supersonic after plasma flame flow accelerates
Speed is simultaneously combined closely with matrix, can improve the bond strength of coating and matrix；
3rd, coating preparation is carried out using Supersonic Plasma Spraying technology, plasma reaction gas is compressed air and third
Alkane, and required plasma reaction gas flow is relatively low, can effectively reduce spraying cost；
4th, Supersonic Plasma Spraying prepares coating quality is good, deposition efficiency is high, and preparation method is simple and reliable, green ring
Protect；
In summary, associated components are remarkably improved by the wear-resisting composite coating of resistance to high temperature oxidation prepared by the present invention
Performance, extend its service life, and improve product quality.
The present invention is further illustrated below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is NiCoCrAlYTa+10%Al prepared by the present invention2O3The Cross Section Morphology figure of coating.
Fig. 2 is NiCoCrAlYTa+10%Al prepared by the present invention2O3Specimen surface shape of the coating after high temperature wear is tested
Looks figure.
Embodiment
Resistance to high temperature oxidation wear-resistant coating preparation method of the present invention, comprises the following steps：
The first step：By heat resisting steel degreasing degreasing；
Second step：Carry out blasting treatment to the surface of heat resisting steel, sand material be 46# fused alumina zirconias, blasting pressure for 0.2~
0.4MPa, sandblasting distance is 100~200mm；
3rd step：The wear-resisting painting of resistance to high temperature oxidation is prepared on the surface of heat resisting steel using Supersonic Plasma Spraying technology
Layer, spraying current are 150~250A, and compressed air pressure is 0.2~0.5MPa, and propane flow is 1~2.5l/min, spray coating powder
End is NiCoCrAlYTa+10%Al2O3Composite powder, powder size are 5~35 μm, and powder feeding nitrogen flow is 8~16l/min, powder feeding
Speed is 10~50g/min, is sprayed away from for 150~300mm, and it is 300~1500mm/s to walk rifle speed, and spraying overlap joint is 6~10mm,
Coating deposition rate is 10~50 μm/time；And under the conditions of non-powder feeding, first with plasma flame flow to heat resisting steel preheating 1~2
It is secondary, then powder feeding spraying is carried out, the NiCoCrAlYTa+10%Al of preparation2O3Resistance to high temperature oxidation wear-resistant coating thickness is 200~500 μ
m。
Below by specific embodiment, the present invention is further illustrated.
Embodiment one：
1st, will be installed on after the heat-resisting steel sample degreasing degreasings of Cr28Ni48W5 in fixtures for painting；
2nd, before spraying, blasting treatment is carried out to the spray-coating surface of Cr28Ni48W5 heat resisting steel, sand material is 46# fused alumina zirconias,
Blasting pressure is controlled in 0.3MPa, and sandblasting distance is 150mm, the even surface roughness one of Cr28Ni48W5 heat resisting steel after sandblasting
Cause, and the sand grains that surface may remain is blown away with compressed air；
3rd, it is using Supersonic Plasma Spraying, spraying current 210A, compressed air pressure 0.3MPa, propane flow
2.1l/min；Under the conditions of non-powder feeding, Cr28Ni48W5 heat resisting steel is preheated 2 times using plasma flame flow；Dusty spray is
NiCoCrAlYTa+10%Al2O3Composite powder, powder size are 5~35 μm, and powder feeding nitrogen flow is 12l/min, powder feeding rate
30g/min, spray away from for 200mm, it is 500mm/s to walk rifle speed, and spraying overlap joint is 8mm, and coating deposition rate is about 30 μm/time,
And spray 10 times, so as to the NiCoCrAlYTa+10%Al prepared in the heat-resisting steel surfaces of Cr28Ni48W52O3Resistance to high temperature oxidation is resistance to
It is 320 μm to grind coating layer thickness.
The coating porosity of acquisition be 2%, bond strength 69MPa, coating hardness Hv0.3 be 505,900 DEG C at Si3N4
Coefficient of friction is 0.40 between abrading-ball.Coating cross sections pattern as shown in figure 1, high temperature wear experiment after specimen surface pattern such as Fig. 2 institutes
Show.
Embodiment two：
1st, will be installed on after the heat-resisting steel sample degreasing degreasings of Cr28Ni48W5 in fixtures for painting；
2nd, before spraying, blasting treatment is carried out to the spray-coating surface of Cr28Ni48W5 heat resisting steel, sand material is 46# fused alumina zirconias,
Blasting pressure is controlled in 0.3MPa, and sandblasting distance is 150mm, the even surface roughness one of Cr28Ni48W5 heat resisting steel after sandblasting
Cause, and the sand grains that surface may remain is blown away with compressed air；
3rd, it is using Supersonic Plasma Spraying, spraying current 180A, compressed air pressure 0.3MPa, propane flow
1.5l/min；Under the conditions of non-powder feeding, Cr28Ni48W5 heat resisting steel is preheated 2 times using plasma flame flow；Dusty spray is
NiCoCrAlYTa+10%Al2O3Composite powder, powder size are 5~35 μm, and powder feeding nitrogen flow is 12l/min, and powder feeding rate is
20g/min, spray away from for 200mm, it is 800mm/s to walk rifle speed, and spraying overlap joint is 8mm, and coating deposition rate is about 15 μm/time,
And spray 20 times, so as to the NiCoCrAlYTa+10%Al prepared in the heat-resisting steel surfaces of Cr28Ni48W52O3Resistance to high temperature oxidation is resistance to
It is 315 μm to grind coating layer thickness.
The coating porosity of acquisition be 2.2%, bond strength 65MPa, coating hardness Hv0.3 be 420,900 DEG C at
Si3N4Coefficient of friction is 0.48 between abrading-ball.
In the present invention, coating porosity is quantitative determined using image analysis software UTHSCSA Image Tool, coating knot
Close strength test to carry out according to ASTM-C633 standards, coating hardness is determined using MH-5D type digital micro-analysis hardometer, and coating is resistance to
Performance is ground to test using UMT-3 high temperature friction and wears testing machine.
The present invention is described by embodiment, but is not limited the invention, with reference to description of the invention, institute
Other changes of disclosed embodiment, are such as readily apparent that, such change should belong to for the professional person of this area
Within the scope of the claims in the present invention limit.
Claims (1)
1. a kind of resistance to high temperature oxidation wear-resistant coating preparation method, it is characterised in that comprise the following steps：
The first step：By heat resisting steel degreasing degreasing；
Second step：Carry out blasting treatment to the surface of heat resisting steel, sand material be 46# fused alumina zirconias, blasting pressure for 0.2~
0.4MPa, sandblasting distance is 100~200mm；
3rd step：Resistance to high temperature oxidation wear-resistant coating is prepared on the surface of heat resisting steel using Supersonic Plasma Spraying technology, sprayed
Painting electric current is 150~250A, and compressed air pressure is 0.2~0.5MPa, and propane flow is 1~2.5l/min, and dusty spray is
NiCoCrAlYTa+10%Al2O3Composite powder, powder size are 5~35 μm, and powder feeding nitrogen flow is 8~16l/min, powder feeding rate
For 10~50g/min, spray away from for 150~300mm, it is 300~1500mm/s to walk rifle speed, and spraying overlap joint is 6~10mm, coating
Sedimentation rate is 10~50 μm/time；And under the conditions of non-powder feeding, heat resisting steel is preheated 1~2 time first with plasma flame flow, then
Powder feeding spraying is carried out, prepares resistance to high temperature oxidation wear-resistant coating thickness as 200~500 μm.
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| CN106756745B (en) * | 2017-02-07 | 2019-01-25 | 和县隆盛精密机械有限公司 | A kind of heat resistant and wear resistant damage polishing mechanical arm coating |
| CN109320302B (en) * | 2018-11-06 | 2020-12-29 | 航天特种材料及工艺技术研究所 | High-temperature oxidation-resistant coating formed on base material and preparation method thereof |
| CN109280955A (en) * | 2018-11-20 | 2019-01-29 | 沈阳工学院 | A kind of heat resistant and wear resistant MCrAlSiC composite coating |
| CN111334740A (en) * | 2018-12-19 | 2020-06-26 | 辽宁省轻工科学研究院有限公司 | High-temperature wear-resistant self-lubricating coating and preparation method thereof |
| CN110158011A (en) * | 2019-06-25 | 2019-08-23 | 广东省新材料研究所 | Rewind roll and preparation method thereof with the compound roughening coating of surface anticorrosive wear-resistant |
| CN113005449B (en) * | 2021-02-25 | 2022-12-20 | 南京工程学院 | Preparation of high-temperature oxidation resistant ZrB by rapid laser cladding 2 -Al 2 O 3 Method for coating MCrAlY metal ceramic |
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| US5455119A (en) * | 1993-11-08 | 1995-10-03 | Praxair S.T. Technology, Inc. | Coating composition having good corrosion and oxidation resistance |
| CN103184400B (en) * | 2011-12-27 | 2015-12-09 | 上海宝钢工业技术服务有限公司 | Nano ceramics compound spraying powder and preparation method thereof |
| CN105200363B (en) * | 2015-09-18 | 2017-06-27 | 河北工业大学 | A kind of preparation method of ceramics/Fe-based amorphous composite coating |
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Address after: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee after: Institute of new materials, Guangdong Academy of Sciences Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee before: GUANGDONG INSTITUTE OF NEW MATERIALS |
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