CN102453896A - Method for preparing air inlet edge surface wear-resistant anti-corrosion alloy coating of tail stage blade of steam turbine - Google Patents
Method for preparing air inlet edge surface wear-resistant anti-corrosion alloy coating of tail stage blade of steam turbine Download PDFInfo
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- CN102453896A CN102453896A CN2010105186916A CN201010518691A CN102453896A CN 102453896 A CN102453896 A CN 102453896A CN 2010105186916 A CN2010105186916 A CN 2010105186916A CN 201010518691 A CN201010518691 A CN 201010518691A CN 102453896 A CN102453896 A CN 102453896A
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Abstract
The invention relates to a method for preparing an air inlet edge surface wear-resistant anti-corrosion alloy coating of a tail stage blade of a steam turbine. The method is characterized by comprising the following steps that: 1) the air inlet edge surface of the tail stage blade of the steam turbine is pre-treated; 2) alloy powder is selected, and an automatic powder conveyor is regulated; 3) light beams are regulated; 4) the wear-resistant anti-corrosion coating laser cladding is carried out, a DL-HL-T5000 type CO2 laser is adopted, a work table is a SIMENS numerical control laser processing machine, a synchronous powder conveyor is adopted for conveying the alloy powder into a laser molten pool, high-power focus laser beams and an automatic powder conveying head are fed in the specified direction of the air inlet edge surface of the blade, and uniform and compact laser cladding layers are formed on the blade surface through processing; and 5) flaw detection is carried out after the cladding. According to the method, the laser cladding is adopted for uniformly cladding the alloy powder with the wear-resistant anti-corrosion performance onto the blade of the steam turbine, the uniform and compact metallurgical combining coatings are formed, the anti-corrosion performance reaches the stainless steel level, the cladding layer and a substrate form firm metallurgical combination, and the peeling is not easy to occur.
Description
Technical field
the present invention relates to the method that a kind of generating set parts surface prepares the wear-resisting erosion resistance alloy coat; Particularly relate to a kind of method that adopts laser melting and coating technique to prepare last stage vane of steam turbine leading edge surface abrasion resistance non-corrosive alloy coating, belong to the laser melting and coating technique field.
Background technology
blade is that turbine is the meticulousst, one of most important part.Safe and reliable the safe, full of turbine and entire power plant that be directly connected to of turbine blade sent out.If blade ruptures, will cause unit vibration, the dynamic and static friction of flow-path, lose efficient simultaneously; If in time do not find or in time handle, will cause that accident enlarges, possibly cause whole unit to damage, its financial loss is ten hundreds of.
last stage vane of steam turbine molded lines bottom ubiquity exit edge steam erosion damage, external hard foreign matter wound with solids and corrode leaf destruction, fouling and other damage.The area that the spination burr that the steam erosion forms causes stress concentration and reduces the blade profile root section also can have influence on the vibration performance of blade, weakens the intensity of blade widely, and this has just increased the danger of last stage blade fracture.Because the pit that forms has out-of-shape, the characteristics that are difficult to keep in repair.Therefore, the anti-fatigue performance of last stage blade material how, and particularly the material resistance to corrosion under the wetting vapour working conditions is very crucial to the safety of last stage blade.Take the used material of safeguard procedures to set about to last stage vane of steam turbine from two aspects: the one, seek thermal fatigue resistance and the good alloy material of wear resistance, the 2nd, blade is carried out surface treatment, to improve its thermal fatigue resistance and wear resistance.When adopting traditional soldering tech, be physical bond between coating and the matrix, bonding force is little, and coat-thickness is limited, and dense structure's property is poor, and thinning ratio is big, and defective is many, is prone to cause local stress excessive.Therefore, last stage vane of steam turbine is through after the long-time water erosion, and alloy layer peels off very serious, and influences unit efficiency.
The technology of suitable preparation last stage vane of steam turbine leading edge surface abrasion resistance non-corrosive alloy coating is therefore selected in
, and it is very important further to improve its performance and work-ing life,, be the current problem that needs to be resolved hurrily in affiliated field.
laser melting and coating technique has obtained rapid popularization and widespread use in recent years as a kind of advanced person's re-manufacturing technology.
laser melting and coating technique utilizes the high characteristics of high energy laser beam focused energy; Moment will be preset or send the powdered alloy of putting, have specific physical, chemistry or mechanical property to melt fully synchronously automatically with laser at substrate surface; Base material part fusing simultaneously forms a kind of new composite shape matl, rapid solidification after the laser beam flying; The fine and close coating of acquisition and matrix metallurgical binding is to reach the purpose of recovering geometrical dimension and surface strengthening.
are present; About utilizing laser melting and coating process to prepare the patent of equipment unit wear resistant alloy coating and reporting a lot: for example; Publication number is " at the quick depositing process of preparing antinwear heat resistant composite coating of crystallizer surface laser " that the Chinese invention patent application of CN1932082 provides; Its characteristics are to utilize superpower laser; Become the good toughness bottoming transition layer of metallurgical binding through the laser rapid scanning with matrix at the copper plate of crystallizer surface cladding, and prepare cobalt base alloy wear-resisting and the heat resistanceheat resistant excellent property at the bottoming alloy surface through laser wide-band cladding.
publication number is " preparation method of laser fusion covered nickel base nanometer WC/Co precoated layer " that the Chinese invention patent application of CN1786272 provides; This preparation method comprises the following steps: 1. by the shellac of every grammes per square metre and the absolute ethyl alcohol weighing shellac and the absolute ethyl alcohol of 10～20 grammes per square metres, then with processing sticker in the described shellac adding absolute ethyl alcohol; 2. as required in the ratio of the sticker of every gram nickel base nanometer WC/Co powder and 0.1 milliliter～0.25 milliliter, weighing nickel base nanometer WC/Co powder and described sticker also mix, and stir and process precoating glue; 3. above-mentioned precoating glue is coated in the workpiece surface of treating Laser Cladding Treatment equably, processes precoated layer; 4. oven dry.Adopt homemade adhesive preparation nickel base nanometer WC/Co precoated layer, and then adopt laser melting and coating process, prepared that the surface is more smooth, finer and closely woven, basically eliminate crackle and hole and be the nickel base nanometer WC/Co compound coating of metallurgical binding with matrix.
publication number is " laser melting and coating process of hydraulic support column cylinder, piston rod wear-resisting erosion resistance coating " that the Chinese invention patent application of CN101338427 provides; Comprise following technological process: at first column cylinder, piston rod surface pre-treatment: column cylinder barrel, piston rod surface carry out oil removing, rust cleaning under the room temperature, and clean with alcohol wash; The adjusting of the selection of powdered alloy and automatic powder feeding device then: select for use have good wear-resisting erosion resistance performance and with the good iron(-)base powder of the metallurgical consistency of matrix, mainly contain Fe, C, Cr, Ni, Mo, Si, N, Nb, Ta, B in the composition of iron(-)base powder; The adjusting of last automatic powder feeding device: regulate the automatic powder feeding device, the powdered alloy that the automatic powder feeding head is come out just in time drops in the laser molten pool, regulates powder sending quantity, makes the thickness of alloy powder coating reach 0.6-1.2mm.
Publication number is " the railroad switch sliding bed surface abrasion resistance non-corrosive alloy coating laser melting and coating process " that the Chinese invention patent application of CN101338425 provides; Comprise following technological process: at first slide plate surface preparation; Promptly at room temperature degreasing and rust removal is carried out on the slide plate surface, and clean with alcohol wash; Be presetting of powdered alloy then; Promptly be preset in the slide plate surface after the above-mentioned processing to the iron-based of treating cladding, Ni-based or Co-based alloy powder; And adjust prealloyed powder with the floating rule that has guide rail; Make it to be evenly distributed on slide plate surface and have suitable thickness, to satisfy the requirement of coat-thickness after the cladding; Be that slide plate is strengthened in the light cladding at last, select gas CO for use
2
Laser apparatus, worktable are numerically-controlled machine, carry out laser melting coating on the slide plate surface and strengthen.
publication number is " the pick-like bit denticle head laser fusing and coating wear-resistant coating reinforcing process " that the Chinese invention patent application of CN101338428 provides, and comprises following technological process: at first be the pre-treatment of pick denticle head surface; Be the selection of powdered alloy and the adjustment of automatic powder feeding device then; Be pick head laser melting coating coated with wear-resisting alloy at last.
Certain technique effect is obtained though the technique scheme that prior art provides can utilize laser melting and coating process that the equipment component parts are carried out the abrasion resistant coating processing in
.But to other specific equipment unit, the ad hoc structure as the last stage vane of steam turbine leading edge for example, the processing parameter that existing laser melting and coating process is provided obviously can not adapt to.
Verification is retrieved through the applicant in
: adopt laser melting and coating process at last stage vane of steam turbine leading edge surface preparation wear-resisting erosion resistance alloy coat, domestic beyond example is not still seen relevant report abroad yet.Therefore, seek out the processing parameter of suitable employing laser melting coating, still need the those skilled in the art further to make creationary research work at last stage vane of steam turbine leading edge surface preparation wear-resisting erosion resistance alloy coat.
Summary of the invention
the objective of the invention is to prior art handling difficult problem at last stage vane of steam turbine leading edge surface preparation wear-resisting erosion resistance alloy coat; Improve through research repeatedly, provided a kind of preparation method of new last stage vane of steam turbine leading edge surface abrasion resistance non-corrosive alloy coating.This method adopts the powdered alloy with good erosion resistance and wear resistance as the cladding alloy material; Take powdered alloy that laser cladding method will have a wear-resisting erosion resistance performance equably cladding on turbine blade; Form the metallurgical binding coating of even compact; Corrosion resisting property reaches stainless level, and cladding layer and matrix form firm metallurgical binding, does not produce and peels off.
The technical scheme that
the present invention provides is: the preparation method of this last stage vane of steam turbine leading edge surface abrasion resistance non-corrosive alloy coating; Be characterized in that technological process is following: the surface preparation of (1) last stage vane of steam turbine leading edge; Under the room temperature oil removing, rust cleaning are carried out in blade leading edge surface working surface; And clean with alcohol wash, tested in blade leading edge surface working position defective such as require working position flawless, pore, be mingled with the penetrant inspection method.
selection of (2) powdered alloy and the adjusting of automatic powder feeding device; Select for use have good wear-resisting erosion resistance performance and with the good Co-based alloy powder of the metallurgical consistency of matrix; Its Chemical Composition percentage composition by weight is: C:1.0-1.5%, Cr:25-30%, Ni:0.4-0.9%, Mn:0.1-0.16%, Si:1.0-1.5%, W:3.5-5.5%, Fe:0.6-0.85%, surplus is Co.
The automatic powder feeding device is regulated in
, and the powdered alloy that the automatic powder feeding head is come out just in time drops in the laser molten pool, regulates powder sending quantity, makes the thickness of alloy powder coating reach 0.8～2mm.
(3) light beam regulation is selected 10*1mm broadband integral mirror for use, and regulating defocusing amount, to make the laser focusing hot spot be rectangle, spot size: long * is wide=and (8-10) * (1-1.5) mm; Or select 3*1mm arrowband integral mirror for use, and and regulating defocusing amount, to make the laser focusing hot spot be rectangle, spot size: long * is wide=and (2.5-3.5) * (1-1.5) mm.
(4) wear-resisting erosion resistance coating laser melting coating is selected DL-HL-T5000 type CO for use
2
Laser apparatus, worktable are the SIMENS CNC laser processing machine.Adopt the synchronous powder feeding system device that powdered alloy is sent into laser molten pool automatically, high power focused laser beam and automatic powder feeding head are processed to form the laser cladding layer of even compact along the assigned direction feeding of blade leading edge surface at blade surface.
melting and coating process parameter is following.
laser power P=3000～5000W; Coat-thickness: 0.8～2mm, the focusing rectangle spot size: long * is wide=(8-10) * (1-1.5) mm, or long * is wide=(2.5-3.5) * (1-1.5) mm; Scan velocity V=300～700mm/min, overlapping rate 40～50%.
Flaw detection after
(5) cladding is tested to blade leading edge surface working position with the penetrant inspection method, requires defectives such as working position flawless, pore.
The DL-HL-T5000 type CO that the present invention selects for use
2
Laser apparatus, SIMENS CNC laser processing machine and synchronous powder feeding system device are the conventional equipment of the industry.
principle of the present invention is: employing has good wear-resisting erosion resistance performance, has the good metallurgy Co-based alloy powder compatible with mechanics with the turbine blade matrix; In high-power laser beam irradiation workpiece surface; Adopt the automatic powder feeding device to send into powdered alloy to laser molten pool synchronously; Powdered alloy takes place to melt fast and solidify in the molten bath, forms the wear-resisting erosion resistance cladding layer of even compact, and cladding layer and matrix form firm metallurgical binding.Cladding layer hardness can be selected in HRC30～60, and cladding layer thickness is at 0.8～2mm, hardness, thickness uniform distribution.
compared with prior art; The invention has the beneficial effects as follows: (1) cladding alloy coating is even, fine and close; Form firm metallurgical binding with matrix; Coating has good wear-resisting erosion resistance performance, and the last stage vane of steam turbine leading edge surface of adopting the present invention's technology to make has significantly improved wear-resisting erosion resistance performance and work-ing life.
(2) the invention solves traditional method welding and make that the heat affected zone on turbine blade leading edge surface is big, thinning ratio big, cladding layer thickness big, organize lax and layer such as peels off easily at problem.
(3) the present invention can be applicable to the laser manufacturing on last stage vane of steam turbine leading edge surface and repairs and make.
Embodiment
The reparation of
embodiment 1:X company internal combustion turbine last stage blade leading edge.
The body material of
internal combustion turbine last stage blade leading edge is 17-4PH; The chemical constitution of Co-based alloy powder is by weight percentage: C:1.0%, Cr:30%, Ni:0.42%, Mn:0.1%, Si:1.1%, W:3.8%, Fe:0.6%, surplus is Co.
its technological process is: the surface preparation of (1) internal combustion turbine last stage blade leading edge.
Under
room temperature oil removing, rust cleaning are carried out in internal combustion turbine last stage blade leading edge surface, and clean with alcohol wash.Tested in blade leading edge surface working position defective such as require working position flawless, pore, be mingled with the penetrant inspection method.
selection of (2) powdered alloy and the adjusting of automatic powder feeding device.
select for use have good wear-resisting erosion resistance performance and with the good Co-based alloy powder of the metallurgical consistency of matrix, regulate the automatic powder feeding head powder just in time dropped in the laser molten pool, regulate powder sending quantity and make coat-thickness reach 1.0mm.
(3) light beam regulation.
are selected 10 * 1mm broadband integral mirror for use, and regulating defocusing amount, to make the laser focusing hot spot be rectangle, spot size: length * wide=8 * 1.5mm.
(4) wear-resisting erosion resistance coating laser melting coating.
Open DL-HL-T5000 type CO
2
Laser apparatus, worktable are the SIMENS CNC laser processing machine.Adopt the synchronous powder feeding system device that powdered alloy is sent into laser molten pool automatically, high power focused laser beam and automatic powder feeding head are along the turbine blade feeding, and blade forms the laser cladding layer of even compact by setting the rotating speed rotation on blade leading edge surface.
melting and coating process parameter is following.
laser power P=3000W; Focusing rectangle spot size: length * wide=8 * 1.5mm; Scan velocity V=400mm/min; Overlapping rate: 45%.
Flaw detection after
(5) cladding.
Defectives such as working position flawless/pore are tested in
to blade leading edge surface with the penetrant inspection method.
The reparation of
embodiment 2:XX company internal combustion turbine last stage blade leading edge.
The body material of
internal combustion turbine last stage blade leading edge is 17-4PH; The chemical constitution of Co-based alloy powder is by weight percentage: C:1.5%, Cr:25%, Ni:0.79%, Mn:0.15%, Si:1.2%, W:5.0%, Fe:0.8%, surplus is Co.
its technological process is: the surface preparation of (1) internal combustion turbine last stage blade leading edge.
Under
room temperature oil removing, rust cleaning are carried out in internal combustion turbine last stage blade leading edge surface, and clean with alcohol wash.The blade surface working position is tested defective such as require working position flawless, pore, be mingled with the penetrant inspection method.
selection of (2) powdered alloy and the adjusting of automatic powder feeding device.
select for use have good wear-resisting erosion resistance performance and with the good Co-based alloy powder of the metallurgical consistency of matrix, regulate the automatic powder feeding head powder just in time dropped in the laser molten pool, regulate powder sending quantity and make coat-thickness reach 1.8mm.
(3) light beam regulation.。
are selected 10 * 1mm broadband integral mirror for use, and regulating defocusing amount, to make the laser focusing hot spot be rectangle, spot size: length * wide=10 * 1mm.
(4) wear-resisting erosion resistance coating laser is molten.
Open DL-HL-T5000 type CO
2
Laser apparatus, worktable are the SIMENS CNC laser processing machine.Adopt the synchronous powder feeding system device that powdered alloy is sent into laser molten pool automatically, high power focused laser beam and automatic powder feeding head are along the turbine blade feeding, and blade forms the laser cladding layer of even compact by setting the rotating speed rotation on blade leading edge surface.
melting and coating process parameter is following.
laser power P=4000W; Focusing rectangle spot size: length * wide=10 * 1mm; Scan velocity V=600mm/min; Overlapping rate: 50%.
Flaw detection after
(5) cladding.
Defectives such as working position flawless/pore are tested in
to blade leading edge surface with the penetrant inspection method.
The reparation of
embodiment 3:XXX company internal combustion turbine last stage blade leading edge.
The body material of
internal combustion turbine last stage blade leading edge is 17-4PH; The chemical constitution of Co-based alloy powder is by weight percentage: C:1.2%, Cr:27%, Ni:0.44%, Mn:0.12%, Si:1.3%, W:4.44%, Fe:0.79%, surplus is Co.
its technological process is: the surface preparation of (1) internal combustion turbine last stage blade leading edge.
Under
room temperature oil removing, rust cleaning are carried out in internal combustion turbine last stage blade leading edge surface, and clean with alcohol wash.The blade surface working position is tested defective such as require working position flawless, pore, be mingled with the penetrant inspection method.
selection of (2) powdered alloy and the adjusting of automatic powder feeding device.
select for use have good wear-resisting erosion resistance performance and with the good Co-based alloy powder of the metallurgical consistency of matrix, regulate the automatic powder feeding head powder just in time dropped in the laser molten pool, regulate powder sending quantity and make coat-thickness reach 1.5mm.
(3) light beam regulation.
are selected 3 * 1mm arrowband integral mirror for use, and regulating defocusing amount, to make the laser focusing hot spot be rectangle, spot size: length * wide=2.5 * 1.5mm.
(4) wear-resisting erosion resistance coating laser melting coating.
Open DL-HL-T5000 type CO
2
Laser apparatus, worktable are the SIMENS CNC laser processing machine.Adopt the synchronous powder feeding system device that powdered alloy is sent into laser molten pool automatically, high power focused laser beam and automatic powder feeding head are along the turbine blade feeding, and blade forms the laser cladding layer of even compact by setting the rotating speed rotation on blade leading edge surface.
melting and coating process parameter is following.
laser power P=5000W; Focusing rectangle spot size: length * wide=2.5 * 1.5mm; Scan velocity V=700mm/min; Overlapping rate: 45%.
Flaw detection after
(5) cladding.
Defectives such as working position flawless/pore are tested in
to blade leading edge surface with the penetrant inspection method.
Claims (4)
1. the preparation method of a last stage vane of steam turbine leading edge surface abrasion resistance non-corrosive alloy coating is characterized in that following steps are arranged:
(1) last stage vane of steam turbine leading edge surface preparation
Under the room temperature oil removing, rust cleaning are carried out in blade leading edge surface working surface, and clean with alcohol wash, require blade leading edge surface working position flawless, pore, inclusion defect;
(2) adjusting of the selection of powdered alloy and automatic powder feeding device
Select for use have good wear-resisting erosion resistance performance and with the good Co-based alloy powder of the metallurgical consistency of matrix, its Chemical Composition percentage composition by weight is:
C:1.0-1.5%, Cr:25-30%, Ni:0.4-0.9%, Mn:0.1-0.16%, Si:1.0-1.5%, W:3.5-5.5%, Fe:0.6-0.85%, surplus is Co;
Regulate the automatic powder feeding device, the powdered alloy that the automatic powder feeding head is come out just in time drops in the laser molten pool, regulates powder sending quantity, makes the thickness of alloy powder coating reach 0.8～2mm;
(3) light beam regulation
Select 10*1mm broadband integral mirror for use, and regulating defocusing amount, to make the laser focusing hot spot being rectangle, spot size: long * is wide=(8-10) * (1-1.5) mm;
Or select 3*1mm arrowband integral mirror for use, and and regulating defocusing amount, to make the laser focusing hot spot be rectangle, spot size: long * is wide=and (2.5-3.5) * (1-1.5) mm;
(4) wear-resisting erosion resistance coating laser melting coating
Select DL-HL-T5000 type CO for use
2Laser apparatus; Worktable is the SIMENS CNC laser processing machine; Adopt the synchronous powder feeding system device that powdered alloy is sent into laser molten pool automatically; High power focused laser beam and automatic powder feeding head be the assigned direction feeding along blade leading edge surface, is processed to form the laser cladding layer of even compact at blade surface, and the melting and coating process parameter is following:
Laser power P=3000～5000W, the focusing rectangle spot size: long * is wide=(8-10) * (1-1.5) mm, or long * is wide=(2.5-3.5) * (1-1.5) mm,
Scan velocity V=300～700mm/min, overlapping rate 40～50%,
Coat-thickness: 0.8～2mm;
(5) flaw detection after the cladding
With the penetrant inspection method tested in blade leading edge surface working position, require working position flawless, gas hole defect.
2. the preparation method of last stage vane of steam turbine leading edge surface abrasion resistance non-corrosive alloy coating according to claim 1; The Chemical Composition that it is characterized in that Co-based alloy powder preferably percentage composition by weight is: C:1.0%, Cr:30%, Ni:0.42%, Mn:0.1%, Si:1.1%, W:3.8%, Fe:0.6%, surplus is Co.
3. the preparation method of last stage vane of steam turbine leading edge surface abrasion resistance non-corrosive alloy coating according to claim 1; The Chemical Composition that it is characterized in that Co-based alloy powder preferably percentage composition by weight is: C:1.5%, Cr:25%, Ni:0.79%, Mn:0.15%, Si:1.2%, W:5.0%, Fe:0.8%, surplus is Co.
4. the preparation method of last stage vane of steam turbine leading edge surface abrasion resistance non-corrosive alloy coating according to claim 1; The Chemical Composition that it is characterized in that Co-based alloy powder preferably percentage composition by weight is: C:1.2%, Cr:27%, Ni:0.44%, Mn:0.12%, Si:1.3%, W:4.44%, Fe:0.79%, surplus is Co.
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| CN2010105186916A CN102453896A (en) | 2010-10-26 | 2010-10-26 | Method for preparing air inlet edge surface wear-resistant anti-corrosion alloy coating of tail stage blade of steam turbine |
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| CN103233222A (en) * | 2013-04-17 | 2013-08-07 | 武汉点金激光科技有限公司 | Laser cladding method of steam turbine last-stage blade inlet edge surface |
| CN103276391A (en) * | 2013-06-05 | 2013-09-04 | 上海电气电站设备有限公司 | Preparation method for water erosion resistant coating of last-stage long blade |
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| CN103898502A (en) * | 2014-04-10 | 2014-07-02 | 西安航空动力股份有限公司 | Method for laser cladding of hard alloy coating on crown of turbine blade |
| CN104195546A (en) * | 2014-08-26 | 2014-12-10 | 浙江瑞莱士机械有限公司 | High-hardness cobalt-based alloy powder for laser cladding and preparation technology of high-hardness cobalt-based alloy powder for laser cladding |
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| CN106636754A (en) * | 2015-11-03 | 2017-05-10 | 上海闸电燃气轮机发电有限公司 | Split face laser seal coating process in gas turbine cylinder |
| CN106702371A (en) * | 2015-07-15 | 2017-05-24 | 昆山鑫昌泰模具科技有限公司 | Laser cladding technology capable of prolonging life of H13 hot forging die |
| 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 |
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| CN108265288A (en) * | 2017-12-22 | 2018-07-10 | 北京机科国创轻量化科学研究院有限公司 | A kind of Co-based alloy powder for superelevation rate laser melting coating |
| CN109514058A (en) * | 2018-11-23 | 2019-03-26 | 东方电气集团东方汽轮机有限公司 | A kind of anti-water erosion processing method of last stage vane of steam turbine |
| CN110373669A (en) * | 2019-08-26 | 2019-10-25 | 南通中能机械制造有限公司 | A method of blade anti-corrosion layer is manufactured 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 |
| 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 |
| CN115595576A (en) * | 2022-10-19 | 2023-01-13 | 中国航发北京航空材料研究院（Cn） | Laser cladding device and method for wear-resistant layer of blade |
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| CN103233222A (en) * | 2013-04-17 | 2013-08-07 | 武汉点金激光科技有限公司 | Laser cladding method of steam turbine last-stage blade inlet edge surface |
| CN104213118A (en) * | 2013-05-29 | 2014-12-17 | 沈阳大陆激光柔性制造技术有限公司 | Manufacturing method of lining for galvanizing |
| CN103276391A (en) * | 2013-06-05 | 2013-09-04 | 上海电气电站设备有限公司 | Preparation method for water erosion resistant coating of last-stage long blade |
| CN103469198A (en) * | 2013-06-05 | 2013-12-25 | 武汉团结点金激光科技有限公司 | Laser remanufacturing and restoring technology of automobile transmission gear hot-forging die |
| CN103469199A (en) * | 2013-06-05 | 2013-12-25 | 武汉团结点金激光科技有限公司 | Laser cladding manufacturing technology of high-performance steam turbine boiler tubes |
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| CN103898502A (en) * | 2014-04-10 | 2014-07-02 | 西安航空动力股份有限公司 | Method for laser cladding of hard alloy coating on crown of turbine blade |
| CN104195546A (en) * | 2014-08-26 | 2014-12-10 | 浙江瑞莱士机械有限公司 | High-hardness cobalt-based alloy powder for laser cladding and preparation technology of high-hardness cobalt-based alloy powder for laser cladding |
| CN106702371A (en) * | 2015-07-15 | 2017-05-24 | 昆山鑫昌泰模具科技有限公司 | Laser cladding technology capable of prolonging life of H13 hot forging die |
| CN106636754B (en) * | 2015-11-03 | 2018-04-20 | 上海闸电燃气轮机发电有限公司 | A kind of gas turbine turbine cylinder split laser seal coating process |
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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 |
| CN108265288A (en) * | 2017-12-22 | 2018-07-10 | 北京机科国创轻量化科学研究院有限公司 | A kind of Co-based alloy powder for superelevation rate laser melting coating |
| CN109514058A (en) * | 2018-11-23 | 2019-03-26 | 东方电气集团东方汽轮机有限公司 | A kind of anti-water erosion processing method of last stage vane of steam turbine |
| CN110373669A (en) * | 2019-08-26 | 2019-10-25 | 南通中能机械制造有限公司 | A method of blade anti-corrosion layer is manufactured 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 |
| 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 |
| 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 |
| CN115595576A (en) * | 2022-10-19 | 2023-01-13 | 中国航发北京航空材料研究院（Cn） | Laser cladding device and method for wear-resistant layer of blade |
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Application publication date: 20120516 |