CN105349995A - Laser-cladding cobalt-base alloy powder and repairing method for repairing damaged expander blade - Google Patents
Laser-cladding cobalt-base alloy powder and repairing method for repairing damaged expander blade Download PDFInfo
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- CN105349995A CN105349995A CN201510938372.3A CN201510938372A CN105349995A CN 105349995 A CN105349995 A CN 105349995A CN 201510938372 A CN201510938372 A CN 201510938372A CN 105349995 A CN105349995 A CN 105349995A
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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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/106—Coating with metal alloys or metal elements only
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
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- Laser Beam Processing (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses laser-cladding cobalt-base alloy powder and a repairing method for repairing a damaged expander blade. The laser-cladding cobalt-base alloy powder comprises the following raw materials in percentage by mass: 20.0% to 50% of Co, 1.0% to 3.0% of W, 2.0% to 5.0% of Mo, 20.0% to 26.0% of Cr, 19.0% to 45.0% of Fe, 0 to 9% of Ni and the balance of Si. The repairing method comprises the following steps: pre-treating the damaged expander blade before laser cladding; performing reverse modeling by three-dimensional laser scanning; determining the to-be-repaired position and size of the blade; performing multi-track lapped laser cladding repair on the damaged expander blade by using the laser-cladding cobalt-base alloy powder. The laser-cladding cobalt-base alloy powder disclosed by the invention adopts austenite as a main phase; Co and Ni elements are used for stabilizing the main phase; W and Mo elements are added, and meanwhile, the content of Si and B elements is reduced, so the toughness and corrosion resistance are improved, and the phenomenon of cracking generated during multi-track lapping of a laser cladding layer is reduced. The alloy powder component has the effects of lowering the cost and improving the stability of a cladding technique, and the laser repair quality and the effective service life of the blade of an energy recycling turbo expander are guaranteed.
Description
Technical field
The invention belongs to re-manufacturing technology field, particularly a kind of energy recovery turbine decompressor blade impaired rear surface reparation laser cladding Co-based alloy powder, belong to Surface Engineering application and re-manufacturing technology engineering field.
Background technology
Mechanical component can be subject to surface abrasion under different working condition and corrosion in-service; the impaired component of effects on surface manufacture again to be repaired and then again to come into operation be manufacture the very important creative work in one, field again, is also to economize on resources, protection of the environment, meet the Strategic Demand place of current social Sustainable development.
The core component such as blade, main shaft of field medium-and-large-sized equipment energy recovery turbine (TRT) the serial decompressors such as metallurgy and petrochemical industry all bears Al
2o
3, SiO
2washing away and strong corrosive environment (CO Deng solid particulate
2, H
2s, SO
2, Cl
-, steam, salt fog etc.) combined action, corrosion and abrasive conditions very harsh.Although at present in order to meet working condition that is corrosion-resistant, heat-resisting, antiscour, have employed the stainless material preparation work blades such as 2Cr13,0Cr17Ni4Cu4Nb, and have employed the process for treating surface such as High temperature ion nitrogenize and protect, but still can not meet the rigors of the labour such as antiscour, corrosion-resistant clothes environment, very easily wear and tear in making this type of key components and parts under arms, and bring out crackle and then fatigure failure occurs, cause component to lose efficacy.The part replacement caused because of burn into wearing and tearing etc. every year in fan industry not only causes raw-material significant wastage, simultaneously because compressor emergency shutdown is also for blower fan user brings huge financial loss.
On 0Cr17Ni4Cu4Nb stainless steel substrate, often adopt Co base and Ni base alloy as laser melting coating layer material for taking into account solidity to corrosion at present.Ni base alloy has higher hardness and erosion resistance, but the heavily stressed coating that easily makes that laser rapid solidification produces forms lateral penetration crackle when laser overlapping cladding; And the wear resistance of single Co base alloy coat when heavily stressed wearing and tearing and heat-shock resistance etc. need to improve, especially the cladding of large-area laser multi-track overlapping, because overlap is subject to the drawing effect in laser secondary remelting and Hou Daoduiqian road, make the tissue of multiple tracks cladding layer overlap obviously deteriorated, the multiple tracks cladding layer hardness under coated material of the same race is starkly lower than single track coating.If adjust laser cladding layer thing phase by regulation and control alloy powder composition and ratio, and keep thing mutually constant with temperature variation in laser cladding process, can be expected to change crackle and organize cracking issues.Based on this, how to design and develop the corrosion-resistant laser melting coating Co-based alloy powder being applicable to energy recovery turbine decompressor blade and be significant.
Summary of the invention
The present invention is directed to the formula that energy recovery turbine decompressor blade erosion corrosion operating mode medium provides a kind of stainless steel blade surface laser cladding Co-based alloy powder.The method utilizes the elements such as Co, W, Mo, Ni to improve the consistency of material, cladding layer alloy is made to have good corrosion resistance nature, while ensureing that cladding layer has suitable intensity and hardness, effectively improve the corrosion resistance nature of alloy layer, the laser repairing for energy recovery turbine decompressor blade provides a kind of applicable cladding powder.
For achieving the above object, according to a kind of laser cladding Co-based alloy powder for repairing impaired decompressor blade that embodiments of the invention provide, comprise the raw material of following mass percent:
Co20.0 ~ 50%; W1.0 ~ 3.0%; Mo2.0 ~ 5.0%; Cr20.0 ~ 26.0%; Fe19.0 ~ 45.0%; Ni0 ~ 9%, surplus is Si.
Correspondingly, The present invention gives a kind of method utilizing laser cladding Co-based alloy powder to repair impaired decompressor blade, comprise the steps:
1) conventional pre-treatment before cladding being carried out to 0Cr17Ni4Cu4Nb type stainless steel impaired decompressor blade: deoil, derust and sand papering to surfaceness be Ra=0.2 μm, finally use acetone, alcohol washes clean;
2) proportioning laser cladding Co-based alloy powder: by 20.0 ~ 50%Co, 1.0 ~ 3.0%W, 2.0 ~ 5.0%Mo, 20.0 ~ 26.0%Cr, 19.0 ~ 45.0%Fe, 0 ~ 9%Ni, surplus is that Si mixes according to mass ratio;
3) carry out reverse modeling finally by laser three-dimensional scanning, determine that blade repairs position and size thereof, then carry out laser repairing;
4) adopt digital control laser cladding machine, take argon gas as protection gas, adopt CO
2laser apparatus is Emission Lasers source, and taper powder bundle coaxial powder-feeding mode, by step 2) mixed powder prepared carries out multi-track overlapping laser melting coating to impaired decompressor blade, and overlapping fraction is 0.6, and cladding layer thickness is 0.8mm.
Further, the power of described laser melting coating is 3 ~ 5KW, spot diameter is 2.5 ~ 4mm, sweep velocity is 2.0 ~ 4.0mm/s, powder feed rate is 7.1 ~ 10.2g/min.
Further, adopt the mode of laser melting coating that it is carried out multi-track overlapping cladding with Co-based alloy powder, cladding layer take austenite as principal phase, and its hardness is 283 ~ 325HV, and electrochemical test corrosion potential and corrosion current are respectively-0.0367 ~ 0.269V and 2.63 × 10
-7~ 6.16 × 10
-8a/cm
3, soaking 100h post-etching weight loss is 0.13mg ~ 0.2mg/cm
2.
Beneficial effect of the present invention is as follows:
The present invention is based on body material to add appropriate alloying element and form corrosion-resistant laser melting coating Co base alloy powder, improve cladding layer corrosion resistance and also solve big area multi-track overlapping problem easy to crack.The method is with Co and Ni two kinds of elemental stable principal phases, and adding appropriate Cr, Ni element can thinning microstructure crystal grain, makes cladding layer have higher solidity to corrosion, improves alloy layer hardening capacity simultaneously, improves intensity and toughness; Add a small amount of W and Mo and reduce Si and B element content simultaneously, controllable alloy cladding layer is that principal phase forms with austenite, and stablizes principal phase; Improve toughness and erosion resistance, cracking phenomena during minimizing cladding layer multi-track overlapping.The object of interpolation the addition of C o, W element is the wettability improving cladding alloy, reduces cladding layer cracking sensitivity, improve the wear resistance of cladding layer simultaneously when large size multi-track overlapping is repaired.
Secondly, alloy powder composition simplifies design as far as possible, reduces costs and improves melting and coating process stability, ensure that laser repairing quality and the useful life of energy recovery turbine decompressor blade.
Experiment shows, the smooth flawless of cladding layer pattern that this Co base cladding alloy powder is formed, significantly can improve 0Cr17Ni4Cu4Nb stainless steel erosion resistance, meet after energy recovery turbine decompressor blade (0Cr17Ni4Cu4Nb) is badly damaged and manufacture reparation necessary requirement again.
Embodiment
Below in conjunction with the embodiment of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention.
The present invention utilizes laser cladding Co-based alloy powder to repair the method for impaired decompressor blade, comprises the steps:
1) choosing 0Cr17Ni4Cu4Nb type stainless steel is matrix, specimen size is 50mm × 30mm × 10mm, and conventional pre-treatment before carrying out cladding: deoil, derust and sand papering to surfaceness be Ra=0.2 μm, finally use acetone, alcohol washes clean;
2) the Co base alloy powder of proportioning laser melting coating heterogeneity: Co, W, Mo, Cr, Fe, Ni are wherein, Co base alloy powder chemical composition and mass percent scope thereof are: 20.0 ~ 50%Co, 1.0 ~ 3.0%W, 2.0 ~ 5.0%Mo, 20.0 ~ 26.0%Cr, 19.0 ~ 45.0%Fe, 0 ~ 9%Ni, and surplus is Si;
3) carry out reverse modeling finally by laser three-dimensional scanning, determine that blade repairs position and size thereof, then carry out laser repairing;
4) adopting HGL-JKR5250 multifunctional numerical control laser melting coating machine, take argon gas as protection gas, CO
2laser apparatus is Emission Lasers source, and taper powder bundle coaxial powder-feeding mode carries out multi-track overlapping laser melting coating, and overlapping fraction is 0.6, and cladding layer thickness is about 0.8mm; The laser power of laser melting coating is 3 ~ 5KW, spot diameter is 2.5 ~ 4mm, sweep velocity is 2.0 ~ 4.0mm/s, powder feed rate is 7.1 ~ 10.2g/min.
4) microstructure and properties detection is carried out after cladding.
By the sample edge after cladding perpendicular to scanning direction Linear cut, crackle is all detected by osmose process in clad layer surface and transverse section, and Microstructure characterization adopts metaloscope, scanning electron microscope (SEM), X-ray diffraction (XRD), power spectrum (EDAX); Erosion resistance and mechanical property are evaluated based on erosion-corrosion experiment, electrochemical corrosion test and microhardness, and wherein immersion corrosion experiment condition is in table one.
Etching condition in the experiment of table one immersion corrosion
Table two electrochemical corrosion experimental etching condition
Add W and Mo and reduce Si and B element content simultaneously, cracking sensitivity during minimizing cladding layer multi-track overlapping, is suitable for the 0Cr17Ni4Cu4Nb type stainless steel blade after serious erosion corrosion and manufactures reparation again.
Below by specific embodiment, the present invention is described in further details.
Embodiment 1
Select 0Cr17Ni4Cu4Nb blade steel (size: 50mm × 30mm × 10mm) as substrate, pre-treatment before carrying out cladding: deoil, derust and sand papering to surfaceness be Ra=0.2 μm, finally use acetone, alcohol washes clean.
Using argon gas as protective atmosphere, HGL-JKR5250 multifunctional numerical control laser melting coating machine is adopted to carry out laser melting coating.Wherein, power P is 4KW, spot diameter D be 3mm, scan velocity V S is 3.0mm/s, powder feed rate Vf is 10.2g/min.The Co base alloy powder of adjustment formula is adopted to carry out laser melting coating.
In the present embodiment, Co base alloy powder proportioning is 20.32%Co, 2.8%W, 2.48%Mo, 19.92%Cr, 44.18%Fe, 8.6%Ni, surplus Si.
Cladding sample cladding layer pattern light, flawless, plasticity are good, and thing take austenite as principal phase, ferrite is auxiliary phase, and microstructure is tiny dentrite, and development is good; Electrochemical test corrosion potential and corrosion current are respectively-0.178V and 3.06 × 10 ~ 7A/cm3; Hardness is 294 ~ 315HV; Under equal acidic conditions, the corrosion weight loss of cladding layer is 0.125mg/cm2.
Embodiment 2
Select 0Cr17Ni4Cu4Nb blade steel (size: 50mm × 30mm × 10mm) as substrate, pre-treatment before carrying out cladding: deoil, derust and sand papering to surfaceness be Ra=0.2 μm, finally use acetone, alcohol washes clean.
Using argon gas as protective atmosphere, HGL-JKR5250 multifunctional numerical control laser melting coating machine is adopted to carry out laser melting coating.Wherein, power P is 4KW, spot diameter D be 3mm, scan velocity V S is 3.0mm/s, powder feed rate Vf is 10.2g/min.The Co base alloy powder of adjustment formula is adopted to carry out laser melting coating.
In the present embodiment, Co base alloy powder proportioning is 34.17%Co, 1.18%W, 2.01%Mo, 23.39%Cr, 30.36%Fe, 8.0%Ni, surplus Si.
Cladding sample cladding layer pattern light, flawless, plasticity are good, and thing take austenite as principal phase, ferrite is auxiliary phase, and microstructure is tiny dentrite, and development is good; Electrochemical test corrosion potential and corrosion current are respectively-0.117V and 2.63 × 10 ~ 7A/cm3; Hardness is 310 ~ 325HV; Under equal acidic conditions, the corrosion weight loss of cladding layer is 0.115mg/cm2.
Embodiment 3
Select 0Cr17Ni4Cu4Nb blade to be repaired as substrate, pre-treatment before carrying out cladding: deoil, derust, remove fatigue layer 0.5-1mm, and sand paper process to surfaceness is Ra=0.2 μm, secondly use acetone, alcohol washes clean, reverse modeling is carried out finally by laser three-dimensional scanning, determine that blade repairs position and size thereof, then carry out laser repairing.
Using argon gas as protective atmosphere, HGL-JKR5250 multifunctional numerical control laser melting coating machine is adopted to carry out laser melting coating.Wherein, power P is 5KW, spot diameter D be 3mm, scan velocity V S is 3.0mm/s, powder feed rate Vf is 10.2g/min.The Co base alloy powder of adjustment formula is adopted to carry out laser melting coating.
In the present embodiment, Co base alloy powder proportioning is 50.02%Co, 2.62%W, 7.88%Mo, 26.39%Cr, 12.36%Fe, 0%Ni, surplus Si.
Cladding sample cladding layer pattern light, flawless, plasticity are good, and thing take austenite as principal phase, ferrite is auxiliary phase, and microstructure is tiny dentrite, and development is good; After surface sand-blasting process, electrochemical test corrosion potential and corrosion current are respectively-0.0212V and 3.36 × 10
-8a/cm
3; Hardness is 283 ~ 290HV; Under equal acidic conditions, the erosion corrosion weightlessness of cladding layer is respectively 0.092mg/cm
2, improve more than 2 times than the solidity to corrosion of matrix.
Embodiment 4
Select 0Cr17Ni4Cu4Nb blade to be repaired as substrate, pre-treatment before carrying out cladding: deoil, derust, remove fatigue layer 0.5-1mm, and sand paper process to surfaceness is Ra=0.2 μm, secondly use acetone, alcohol washes clean, reverse modeling is carried out finally by laser three-dimensional scanning, determine that blade repairs position and size thereof, then carry out laser repairing.
Using argon gas as protective atmosphere, HGL-JKR5250 multifunctional numerical control laser melting coating machine is adopted to carry out laser melting coating.Wherein, power P is 3KW, spot diameter D be 2.5mm, scan velocity V S is 3.6mm/s, powder feed rate Vf is 7.5g/min.The Co base alloy powder of adjustment formula is adopted to carry out laser melting coating.
In the present embodiment, Co base alloy powder proportioning is 39.9%Co, 1.0%W, 5.0%Mo, 25.9%Cr, 19.0%Fe, 8.6%Ni, and surplus is Si.
Cladding sample cladding layer pattern light, flawless, plasticity are good, and thing take austenite as principal phase, ferrite is auxiliary phase, and microstructure is tiny dentrite, and development is good; After surface sand-blasting process, electrochemical test corrosion potential and corrosion current are respectively-0.269V and 2.36 × 10
-7a/cm
3; Hardness is 307 ~ 319HV; Under equal acidic conditions, the corrosion weight loss of cladding layer is respectively 0.134mg/cm
2, improve more than 1 times than the solidity to corrosion of matrix.
The laser melting coating Co base alloy powder of the present invention's research and development, compared with Co based powders in the past, is more suitable for energy recovery turbine decompressor 0Cr17Ni4Cu4Nb type stainless steel blade.First, under same experiment condition, the present invention looks for another way, and cladding layer take austenite as principal phase, Co and Ni two kinds of elemental stable principal phases, improves toughness and erosion resistance; Add W and Mo and reduce Si and B element content simultaneously, cracking phenomena during minimizing cladding layer multi-track overlapping, the 0Cr17Ni4Cu4Nb type stainless steel blade being suitable for heavy wear manufactures reparation again.Secondly, alloy powder composition simplifies design as far as possible, reduces costs and improves melting and coating process stability, ensure that laser repairing quality and the useful life of energy recovery turbine decompressor blade.
Be understandable that, although the present invention with preferred embodiment disclose as above, but above-described embodiment and be not used to limit the present invention.For any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the technology contents of above-mentioned announcement can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (4)
1. for repairing a laser cladding Co-based alloy powder for impaired decompressor blade, it is characterized in that, comprising the raw material of following mass percent:
Co20.0 ~ 50%; W1.0 ~ 3.0%; Mo2.0 ~ 5.0%; Cr20.0 ~ 26.0%; Fe19.0 ~ 45.0%; Ni0 ~ 9%, surplus is Si.
2. utilize laser cladding Co-based alloy powder to repair a method for impaired decompressor blade, it is characterized in that, comprise the steps:
1) conventional pre-treatment before cladding being carried out to 0Cr17Ni4Cu4Nb type stainless steel impaired decompressor blade: deoil, derust and sand papering to surfaceness be Ra=0.2 μm, finally use acetone, alcohol washes clean;
2) proportioning laser cladding Co-based alloy powder: by 20.0 ~ 50%Co, 1.0 ~ 3.0%W, 2.0 ~ 5.0%Mo, 20.0 ~ 26.0%Cr, 19.0 ~ 45.0%Fe, 0 ~ 9%Ni, surplus is that Si mixes according to mass ratio;
3) carry out reverse modeling finally by laser three-dimensional scanning, determine that blade repairs position and size thereof, then carry out laser repairing;
4) adopt digital control laser cladding machine, take argon gas as protection gas, adopt CO
2laser apparatus is Emission Lasers source, and taper powder bundle coaxial powder-feeding mode, by step 2) mixed powder prepared carries out multi-track overlapping laser melting coating to impaired decompressor blade, and overlapping fraction is 0.6, and cladding layer thickness is 0.8mm.
3. a kind of method utilizing laser cladding Co-based alloy powder to repair impaired decompressor blade according to claim 2, it is characterized in that, the power of described laser melting coating is 3 ~ 5KW, spot diameter is 2.5 ~ 4mm, sweep velocity is 2.0 ~ 4.0mm/s, powder feed rate is 7.1 ~ 10.2g/min.
4. a kind of laser cladding Co-based alloy powder for repairing the impaired decompressor blade of severe according to claim 2, it is characterized in that, adopt the mode of laser melting coating that it is carried out multi-track overlapping cladding with Co-based alloy powder, cladding layer take austenite as principal phase, its hardness is 283 ~ 325HV, and electrochemical test corrosion potential and corrosion current are respectively-0.0367 ~ 0.269V and 2.63 × 10
-7~ 6.16 × 10
-8a/cm
3, soaking 100h post-etching weight loss is 0.13mg ~ 0.2mg.
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| CN108118334A (en) * | 2017-12-22 | 2018-06-05 | 北京机科国创轻量化科学研究院有限公司 | A kind of method that superelevation rate laser melting coating prepares cobalt-based wear-and corrosion-resistant coating |
| CN108165982A (en) * | 2017-12-22 | 2018-06-15 | 北京机科国创轻量化科学研究院有限公司 | A kind of method that superelevation rate laser melting coating prepares nickel-base antiwear anti-corrosion coating |
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| CN108823564A (en) * | 2018-07-04 | 2018-11-16 | 湖南工业大学 | A method of corrosion-inhibiting coating is prepared using laser melting and coating technique |
| CN111607788A (en) * | 2020-03-16 | 2020-09-01 | 临涣焦化股份有限公司 | Laser cladding remanufacturing method for dry quenching circulating fan impeller |
| CN111962069B (en) * | 2020-09-02 | 2023-03-14 | 中国航发北京航空材料研究院 | Deformed high-temperature alloy and stainless steel gas compressor rotor blade tip repairing method and tool |
| CN111962069A (en) * | 2020-09-02 | 2020-11-20 | 中国航发北京航空材料研究院 | Deformed high-temperature alloy and stainless steel gas compressor rotor blade tip repairing method and tool |
| CN112132161A (en) * | 2020-09-07 | 2020-12-25 | 桂林电子科技大学 | Method, apparatus and computer-readable storage medium for repairing worn parts |
| US11661861B2 (en) | 2021-03-03 | 2023-05-30 | Garrett Transportation I Inc. | Bi-metal variable geometry turbocharger vanes and methods for manufacturing the same using laser cladding |
| CN115058626A (en) * | 2021-03-08 | 2022-09-16 | 南京理工大学 | Cobalt-based high-temperature alloy suitable for additive manufacturing |
| CN115058626B (en) * | 2021-03-08 | 2023-08-25 | 南京理工大学 | Cobalt-based superalloy suitable for additive manufacturing |
| CN113621896B (en) * | 2021-08-18 | 2022-08-05 | 沈阳大陆激光先进制造技术创新有限公司 | Wear-resistant and corrosion-resistant coating material for impeller of slurry pump in alumina plant and preparation method thereof |
| CN113621896A (en) * | 2021-08-18 | 2021-11-09 | 沈阳大陆激光先进制造技术创新有限公司 | Wear-resistant coating material for impeller of slurry pump in alumina plant and preparation method thereof |
| CN113776941A (en) * | 2021-09-15 | 2021-12-10 | 沈阳工业大学 | Method for testing interface bonding strength of laser cladding stainless steel cladding layer |
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