CN109385631A - A kind of laser melting coating complex repairation manufacturing method and its application - Google Patents
A kind of laser melting coating complex repairation manufacturing method and its application Download PDFInfo
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- CN109385631A CN109385631A CN201811503346.8A CN201811503346A CN109385631A CN 109385631 A CN109385631 A CN 109385631A CN 201811503346 A CN201811503346 A CN 201811503346A CN 109385631 A CN109385631 A CN 109385631A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention relates to a kind of laser melting coating complex repairation manufacturing method, steps 1, laser cleaning；Step 2, laser preheating；Using laser Continuous irradiation workpiece surface to be repaired, it is preheated, the shoot laser of laser at this time is denoted as pre- thermal laser, the light spot shape of pre- thermal laser is round or rectangle, and preheating facula area is 6mm2~20mm2, the scanning speed for preheating laser facula is 8mm/s~20mm/s；Step 3, laser melting coating；The workpiece to be repaired after preheating is irradiated using cladding laser, light spot shape, facula area and the scanning speed of cladding laser are identical as the light spot shape of pre- thermal laser, facula area and scanning speed；Step 4, machining；The invention further relates to a kind of applications using above-mentioned laser melting coating complex repairation manufacturing method, can be applied to the reparation manufacture of high-carbon steel workpiece, high-alloy steel workpiece；Using laser as manufacturing process, clean and effective is environmentally protective.
Description
Technical field
The present invention relates to a kind of laser melting coating complex repairation manufacturing method and its applications.
Background technique
In recent years, it is continued to bring out with high-power, High-performance lasers process unit, with increasing material manufacturing and 3D printing technique
Closely related laser melting coating, rapid laser-shaping technique increasingly cause the great attention of countries in the world, and in automobile, energy
The every field such as source, electronics, aerospace, heavy industry machinery are developed rapidly.
Currently, China is metallurgical, mine, automobile, the various production equipments of heavy industry machinery industry, components etc. largely enter
Date of retirement；Wherein very small part made again after reparation remanufactures by technologies such as traditional welding, plating, sprayings
With, however most equipment is directly deposited in warehouse and scraps, for the continuation of production, enterprise has to that a large amount of expense is spent to adopt
New equipment is purchased, the financial burden of enterprise has been aggravated.With the further development of laser melting and coating technique, laser melting and coating technique is as new
Means remanufacture field in reparation and gradually show up prominently；However when the progress laser melting coating such as equipment, workpiece scrapped, due to table
Face carries out carrying out laser melting coating operation after the pretreatment such as cleaning there are a large amount of greasy dirt, rusty stain etc.；It is general at present to use
The chemical reagent such as alcohol, acetone degrease, and remove rusty stain using polishing, sandblasting etc., not only waste time in this way, but will be to ring
Cause serious pollution in border: chemical reagent causes water pollution, air pollution；Polishing or sandblasting are it will cause a large amount of dust, and one
It is to make a big impact to the health of operator, second is that causing serious haze, does not meet environmental requirement.
To solve the above-mentioned problems, need to invent a kind of laser cleaning and laser melting coating composite manufacturing method, to solve
The problem of carrying out a large amount of pretreatment works is needed before laser melting coating at present.
Summary of the invention
The present invention in view of the deficiency of the prior art, provides a kind of laser melting coating complex repairation manufacturing method.
The technical scheme to solve the above technical problems is that a kind of laser melting coating complex repairation manufacturing method, packet
Include following steps:
Step 1, laser cleaning clean workpiece surface to be repaired using pulse laser；
Step 2, laser preheating；
Using laser Continuous irradiation workpiece surface to be repaired, it is preheated, by the shoot laser of laser at this time
It is denoted as pre- thermal laser, the light spot shape of pre- thermal laser is round or rectangle, and preheating facula area is 6mm2~20mm2, pre- heat shock
Optical power is 600W~1000W, and the scanning speed for preheating laser facula is 8mm/s~20mm/s；
Step 3, laser melting coating；
Using the workpiece surface to be repaired after the preheating of laser Continuous irradiation, the shoot laser of laser at this time is denoted as molten
Laser is covered, forms molten bath on workpiece to be repaired after preheat, while cladding being blown into the molten bath with powder, molten bath is quick
Solidification forms cladding layer；
The light spot shape of light spot shape, facula area and the scanning speed of cladding laser and pre- thermal laser, facula area and
Scanning speed is identical；
Step 4, machining；
Copy to be repaired after laser melting coating is machined, and required precision is reached.
The beneficial effect that manufacturing method is repaired in the present invention is: laser cleaning is the cleaning method of a kind of " green ", is not required to
Using any chemical agent and cleaning solution, the waste material washed down is essentially all solid powder, small in size, easily stored, can
Recycling, can solve chemical cleaning bring problem of environmental pollution easily；Traditional cleaning method is often contact cleaning, right
Cleaning object surface has mechanicals efforts, and the medium on the surface or cleaning of damaging object is attached to the surface of cleaned object,
It not can be removed, generate secondary pollution, laser cleaning makes these problems be readily solved without grinding with untouchable；Laser can lead to
Optical fiber transmission is crossed, is matched with mechanical hand and robot, conveniently realizes remote-controlled operation, conventional method can be cleaned and be not easy to reach
Position, this is in the place of some danger using may insure the safety of personnel；Laser cleaning can remove a variety of materials surface
Various types of pollutants, reach the cleannes routinely cleaned and be unable to reach, but also can be on not attacking material surface
In the case of selectively cleaning material surface pollutant；Laser cleaning is high-efficient, saves the time.
The effect of laser cleaning is first is that remove greasy dirt, rusty stain, the fatigue layer etc. of workpiece surface, second is that carrying out to workpiece preliminary
It preheats (power used by laser cleaning is lower, and preliminary preheating temperature will not be too high, does not exceed 50 DEG C generally)；Laser is pre-
Heat preheats workpiece to be repaired, in order to carry out next step laser melting coating；Laser melting coating, laser melting coating have dilution
Small, dense structure, coating and matrix are combined, are suitble to the features such as cladding material is more, granularity and changes of contents are big, can reach table
Purpose face modification or repaired, and the requirement to material surface particular characteristic had not only been met, but also saved a large amount of valuable gold
Belong to；
In addition, use identical hot spot in step 2 and step 3, can be used in process same laser and its
Appurtenances, when avoiding step 2 and being carried out to step 3, since more exchange device causes in step 2 temperature after workpiece preheating to reduce,
The poor situation of pre-heat effect.
Further, in step 1, the power of pulse laser is 5W~200W, cleaning rate 3cm2/ min~500cm2/
Min, repetition rate are 5Hz~30Hz.
Beneficial effect using above-mentioned further technical solution is: laser cleaning uses pulse laser: first is that cleaning effect
It is excellent, second is that the thermal energy of laser is converted to mechanical energy (shock wave pressure) by the shock wave of pulse laser, to change to be repaired
The stress state of multiple workpiece surface, complex surface to be repaired generate compression, it is therefore prevented that due to tensile stress in post laser cladding process
Factor and crack.
Further, the pulse width of pulse laser is 5ns~50ns.
Further, the number of laser cleaning is at least 1 time in step 1.
Beneficial effect using above-mentioned further technical solution is: according to the number of workpiece rusty stain to be repaired, thickness, greasy dirt
Number repeatedly walked it is 1 rapid, in order to thoroughly remove greasy dirt, corrosion layer and fatigue layer etc..
Further, the number that laser preheats in step 2 is at least 1 time.
Beneficial effect using above-mentioned further technical solution is: according to the size of workpiece and the area of area to be repaired
Multiple step 2 is carried out, workpiece is made to reach suitable preheating temperature, in order to the progress of laser melting coating, is prevented in laser melting coating mistake
The defects of workpiece or laser melting coating region crack in journey.
Further, in step 3, the power of cladding laser is 1300W~4000W.
Further, the temperature of the workpiece to be repaired after the preheating of step 2 laser is not higher than 200 DEG C, and is not less than 50 DEG C.
Beneficial effect using above-mentioned further technical solution is: workpiece to be repaired further reduced after laser preheats
Its internal stress, it is therefore prevented that the case where being cracked in laser cladding process, and preheating temperature is no more than 200 DEG C, will not influence
Original performance of workpiece influences can be ignored caused by workpiece substrate, does not influence reusing for workpiece.
The invention further relates to a kind of applications of laser melting coating complex repairation manufacturing method, by above-mentioned laser complex repairation system
Make reparation manufacture of the method applied to high-carbon steel workpiece, high-alloy steel workpiece.
The beneficial effect of the application of laser melting coating complex repairation manufacturing method is: high-carbon steel or high-alloy steel are since its is carbon containing
Alloying elements various in steel (are converted to the increase and decrease of carbon to the influence of the practical carbon amounts of eutectic point, calculated in this way by amount or carbon equivalent
Carbon amounts be known as " carbon equivalent ", identified with C.E.) higher, poor thermal conductivity, be easy to produce if the temperature difference is larger during heating
Raw crackle, using the technical solution of laser cleaning, laser preheating and laser melting coating, temperature rise is more slow, whole process
The each position of workpiece is not likely to produce the biggish temperature difference, will not crack in laser cladding process, and effective solve high-carbon steel
Fire check is also easy to produce in traditional welding or weld deposit process with high-alloy steel and ultimately causes the completely written-off problem of workpiece.
Detailed description of the invention
Fig. 1 is flow diagram of the invention；
Fig. 2 is the structural schematic diagram that Automotive Cold Pressing Dies have Cr12MoV insert in the present invention；
Fig. 3 is the microscopic structure in the present invention after the reparation of Cr12MoV insert；
Fig. 4 is the microscopic structure in the present invention after the reparation of 45 steel main shaft axle journals.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment 1
As shown in Figure 1, a kind of laser melting coating complex repairation manufacturing method, with restoring automobile cold punching die Cr12MoV edge
For the cutting edge position of block, as shown in Fig. 2, Cr12MoV is high-carbon high-alloy steel, include the following steps:
Step 1, at least 1 laser cleaning, using pulse laser to the cutting edge portion of Automotive Cold Pressing Dies tool Cr12MoV insert
Position is cleaned, wherein the power of pulse laser is 5W~200W, cleaning rate 3cm2/ min~500cm2/ min repeats frequency
Rate is 5Hz~30Hz, and the pulse width of pulse laser is 5ns~50ns；
Step 2, at least 1 laser preheating；
Using the cutting edge position of laser Continuous irradiation Automotive Cold Pressing Dies tool Cr12MoV insert, it is preheated, it will
The shoot laser of laser is denoted as pre- thermal laser at this time, and the light spot shape of pre- thermal laser is round or rectangle, preheats hot spot face
Product is 6mm2~20mm2, preheating laser power is 600W~1000W, and the scanning speed for preheating laser facula is 8mm/s~20mm/
s；The temperature of workpiece to be repaired after laser preheating is not higher than 200 DEG C, and is not less than 150 DEG C；
Step 3, laser melting coating；
It, will at this time using the cutting edge position of the Automotive Cold Pressing Dies tool Cr12MoV insert after the preheating of laser Continuous irradiation
The shoot laser of laser is denoted as cladding laser, at the cutting edge position of Automotive Cold Pressing Dies tool Cr12MoV insert after preheat
Molten bath is formed, while cladding being blown into the molten bath with powder, molten bath, which quickly solidifies, forms cladding layer；
The light spot shape of light spot shape, facula area and the scanning speed of cladding laser and pre- thermal laser, facula area and
Scanning speed is identical, and the power of cladding laser is 1300W~1600W；
Fig. 3 is the microscopic structure of high-carbon high-alloy steel Cr12MoV insert laser melting coating, it can be seen that laser melting coating is compound to be repaired
The defects of duplication, which is made, to be cracked, stomata, slag inclusion.
Step 4, machining；
Copy to be repaired after laser melting coating is machined, and can first be carried out milling to the workpiece to be repaired after cladding and be added
Work, then grinding is carried out, reach required precision.
Embodiment 2
45 steel main shaft axle journal laser complex repairation manufacturing methods, include the following steps:
Step 1, at least 1 laser cleaning clean 45 steel main shaft axle journals using pulse laser, wherein pulse swashs
The power of light is 5W~200W, cleaning rate 3cm2/ min~500cm2/ min, repetition rate are 5Hz~30Hz, pulse laser
Pulse width be 5ns~50ns；
Step 2, at least 1 laser preheating；
Using 45 steel main shaft axle journal of laser Continuous irradiation, it is preheated, the shoot laser of laser at this time is remembered
For pre- thermal laser, the light spot shape of pre- thermal laser is round or rectangle, and preheating facula area is 6mm2~20mm2, pre- thermal laser
Power is 600W~1000W, and the scanning speed for preheating laser facula is 8mm/s~20mm/s；45 steel main shafts after laser preheating
Temperature be not higher than 120 DEG C, and be not less than 50 DEG C；
Step 3, laser melting coating；
Using 45 steel main shaft axle journals after the preheating of laser Continuous irradiation, the shoot laser of laser at this time is denoted as cladding
Laser forms molten bath at 45 steel main shaft axle journals after preheat, while cladding being blown into the molten bath with powder, and molten bath is quick
Solidification forms cladding layer；
The light spot shape of light spot shape, facula area and the scanning speed of cladding laser and pre- thermal laser, facula area and
Scanning speed is identical, and the power of cladding laser is 1500W~4000W；
Fig. 4 is the microscopic structure of 45 steel machine tool chief axis axle journal position laser melting coating of medium carbon steel, it can be seen that laser melting coating is multiple
The defects of conjunction reparation, which manufactures, to be cracked, stomata, slag inclusion.
Step 4, machining；
Copy to be repaired after laser melting coating is machined, and can first be carried out milling to the workpiece to be repaired after cladding and be added
Work, then grinding is carried out, reach required precision.
The invention further relates to a kind of applications of laser melting coating complex repairation manufacturing method, by above-mentioned laser complex repairation system
Make reparation manufacture of the method applied to high-carbon steel workpiece, high-alloy steel workpiece.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of laser melting coating complex repairation manufacturing method, which comprises the steps of:
Step 1, laser cleaning clean workpiece surface to be repaired using pulse laser；
Step 2, laser preheating；
Using laser Continuous irradiation workpiece surface to be repaired, it is preheated, the shoot laser of laser at this time is denoted as
Pre- thermal laser, the light spot shape of pre- thermal laser are round or rectangle, and preheating facula area is 6mm2~20mm2, pre- thermal laser function
Rate is 600W~1000W, and the scanning speed for preheating laser facula is 8mm/s~20mm/s；
Step 3, laser melting coating；
Using the workpiece surface to be repaired after the preheating of laser Continuous irradiation, the shoot laser of laser at this time is denoted as cladding and is swashed
Light forms molten bath on workpiece to be repaired after preheat, while cladding being blown into the molten bath with powder, and molten bath quickly solidifies
Form cladding layer；
Light spot shape, facula area and the scanning of light spot shape, facula area and the scanning speed and pre- thermal laser of cladding laser
Speed is identical；
Step 4, machining；
Copy to be repaired after laser melting coating is machined, and required precision is reached.
2. laser melting coating complex repairation manufacturing method according to claim 1, which is characterized in that in step 1, pulse laser
Power be 5W~200W, cleaning rate 3cm2/ min~500cm2/ min, repetition rate are 5Hz~30Hz.
3. laser melting coating complex repairation manufacturing method according to claim 1, which is characterized in that in step 1, pulse laser
Pulse width be 5ns~50ns.
4. laser melting coating complex repairation manufacturing method according to claim 1, which is characterized in that laser cleaning in step 1
Number be at least 1 time.
5. laser melting coating complex repairation manufacturing method according to claim 1, which is characterized in that laser preheats in step 2
Number be at least 1 time.
6. laser melting coating complex repairation manufacturing method according to claim 1-5, which is characterized in that in step 3,
The power of cladding laser is 1300W~4000W.
7. laser melting coating complex repairation manufacturing method according to claim 1-5, which is characterized in that through step 2
The temperature of workpiece to be repaired after laser preheating is not higher than 200 DEG C, and is not less than 50 DEG C.
8. a kind of application of laser melting coating complex repairation manufacturing method, which is characterized in that claim 1-7 is described in any item
Laser complex repairation manufacturing method is applied to the reparation manufacture of high-carbon steel workpiece, high-alloy steel workpiece.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821823A (en) * | 2019-04-08 | 2019-05-31 | 哈尔滨工业大学 | A kind of CO2Laser/ps pulsed laser and ns pulsed laser compound cleaning method |
| CN109926403A (en) * | 2019-03-28 | 2019-06-25 | 中国人民解放军陆军装甲兵学院 | A method of it reducing high power pulse laser and cleans metal surface residual stress |
| CN110227689A (en) * | 2019-06-19 | 2019-09-13 | 苏州大学 | Integration apparatus and method are repaired in a kind of cleaning of high-energy |
| CN110846652A (en) * | 2019-10-21 | 2020-02-28 | 神华铁路货车运输有限责任公司 | Axle repair method and remanufactured axle |
| CN111621778A (en) * | 2019-12-23 | 2020-09-04 | 阳江市高功率激光应用实验室有限公司 | Method for preparing anticorrosive coating of ocean wind power tower |
| CN111945153A (en) * | 2020-08-05 | 2020-11-17 | 中国人民解放军陆军装甲兵学院 | Multi-source laser multi-channel integrated restoration method for metal surface |
| CN112853346A (en) * | 2021-01-08 | 2021-05-28 | 中车青岛四方机车车辆股份有限公司 | Laser cladding remanufacturing device and remanufacturing method for railway vehicle axle |
| CN113061885A (en) * | 2021-03-24 | 2021-07-02 | 马鞍山钢铁股份有限公司 | Laser cladding repair method for circular cooler bend |
| CN113245558A (en) * | 2021-06-10 | 2021-08-13 | 北京煜鼎增材制造研究院有限公司 | Method for manufacturing high-performance high-temperature gradient material component |
| CN114538961A (en) * | 2021-12-28 | 2022-05-27 | 中核四0四有限公司 | SiC/Y on surface of C-based material2O3Method for repairing coating crack |
| CN114622198A (en) * | 2021-11-25 | 2022-06-14 | 上海吴泾第二发电有限责任公司 | Power station generator rotor shaft neck damage laser cladding repair method and application |
| CN114686878A (en) * | 2022-03-07 | 2022-07-01 | 汕头大学 | Gear laser cladding repair method |
| CN115070061A (en) * | 2022-07-20 | 2022-09-20 | 西安空天机电智能制造有限公司 | Laser repairing method for undercarriage cracks |
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| CN105108444A (en) * | 2015-09-11 | 2015-12-02 | 江苏万力机械股份有限公司 | Repairing and strengthening method for tool of high-temperature in-service shearing equipment |
| CN105779997A (en) * | 2016-04-29 | 2016-07-20 | 广西大学 | Method for cladding nickel-based alloy coating on surface of vermicular graphite cast iron mould after laser pre-heating treatment |
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| EP0205183A2 (en) * | 1985-06-14 | 1986-12-17 | Sumitomo Special Metals Co., Ltd. | Clad sheet and process and apparatus for producing same |
| CN105108444A (en) * | 2015-09-11 | 2015-12-02 | 江苏万力机械股份有限公司 | Repairing and strengthening method for tool of high-temperature in-service shearing equipment |
| CN105779997A (en) * | 2016-04-29 | 2016-07-20 | 广西大学 | Method for cladding nickel-based alloy coating on surface of vermicular graphite cast iron mould after laser pre-heating treatment |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109926403A (en) * | 2019-03-28 | 2019-06-25 | 中国人民解放军陆军装甲兵学院 | A method of it reducing high power pulse laser and cleans metal surface residual stress |
| CN109821823A (en) * | 2019-04-08 | 2019-05-31 | 哈尔滨工业大学 | A kind of CO2Laser/ps pulsed laser and ns pulsed laser compound cleaning method |
| CN109821823B (en) * | 2019-04-08 | 2021-11-02 | 哈尔滨工业大学 | CO2 laser/nanosecond pulse laser composite cleaning method |
| CN110227689A (en) * | 2019-06-19 | 2019-09-13 | 苏州大学 | Integration apparatus and method are repaired in a kind of cleaning of high-energy |
| CN110846652B (en) * | 2019-10-21 | 2021-11-23 | 神华铁路装备有限责任公司 | Axle repair method and remanufactured axle |
| CN110846652A (en) * | 2019-10-21 | 2020-02-28 | 神华铁路货车运输有限责任公司 | Axle repair method and remanufactured axle |
| CN111621778A (en) * | 2019-12-23 | 2020-09-04 | 阳江市高功率激光应用实验室有限公司 | Method for preparing anticorrosive coating of ocean wind power tower |
| CN111621778B (en) * | 2019-12-23 | 2022-08-12 | 阳江市高功率激光应用实验室有限公司 | Method for preparing anticorrosive coating of ocean wind power tower |
| CN111945153A (en) * | 2020-08-05 | 2020-11-17 | 中国人民解放军陆军装甲兵学院 | Multi-source laser multi-channel integrated restoration method for metal surface |
| CN112853346A (en) * | 2021-01-08 | 2021-05-28 | 中车青岛四方机车车辆股份有限公司 | Laser cladding remanufacturing device and remanufacturing method for railway vehicle axle |
| CN113061885A (en) * | 2021-03-24 | 2021-07-02 | 马鞍山钢铁股份有限公司 | Laser cladding repair method for circular cooler bend |
| CN113245558A (en) * | 2021-06-10 | 2021-08-13 | 北京煜鼎增材制造研究院有限公司 | Method for manufacturing high-performance high-temperature gradient material component |
| CN113245558B (en) * | 2021-06-10 | 2021-10-01 | 北京煜鼎增材制造研究院有限公司 | Method for manufacturing high-performance high-temperature gradient material component |
| CN114622198A (en) * | 2021-11-25 | 2022-06-14 | 上海吴泾第二发电有限责任公司 | Power station generator rotor shaft neck damage laser cladding repair method and application |
| CN114538961A (en) * | 2021-12-28 | 2022-05-27 | 中核四0四有限公司 | SiC/Y on surface of C-based material2O3Method for repairing coating crack |
| CN114538961B (en) * | 2021-12-28 | 2023-01-03 | 中核四0四有限公司 | SiC/Y on surface of C-based material 2 O 3 Method for repairing coating crack |
| CN114686878A (en) * | 2022-03-07 | 2022-07-01 | 汕头大学 | Gear laser cladding repair method |
| CN115070061A (en) * | 2022-07-20 | 2022-09-20 | 西安空天机电智能制造有限公司 | Laser repairing method for undercarriage cracks |
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