CN110373669A - A method of blade anti-corrosion layer is manufactured using laser melting and coating technique - Google Patents
A method of blade anti-corrosion layer is manufactured using laser melting and coating technique Download PDFInfo
- Publication number
- CN110373669A CN110373669A CN201910787465.9A CN201910787465A CN110373669A CN 110373669 A CN110373669 A CN 110373669A CN 201910787465 A CN201910787465 A CN 201910787465A CN 110373669 A CN110373669 A CN 110373669A
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- CN
- China
- Prior art keywords
- blade
- laser
- laser melting
- cladding
- milling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/34—Laser welding for purposes other than joining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a kind of methods for being manufactured blade anti-corrosion layer using laser melting and coating technique, the specific steps are as follows: laser melting coating agent selects: laser melting coating agent is stellite powder, and the granularity of stellite is 45 μm；The processing of formed blades: carrying out milling machine to the leading edge of formed blades and handle to obtain milling bottom blade, mills bottom with a thickness of 1mm, after the completion, milling bottom blade is cleaned out；Laser melting coating: Laser Cladding Treatment, laser output power 2000w, spot diameter 3mm are carried out to the leading edge of milling bottom blade, milling bottom blade obtains cladding blade after Laser Cladding Treatment；Drying and processing: cladding blade is put into baking oven and carries out drying and processing, oven temperature is selected as 120 DEG C, and drying time 0.5h, the present invention not only increases the corrosion resistance of blade, while also extending the service life of blade.
Description
Technical field:
The present invention relates to a kind of vane manufacturing fields, especially a kind of to be manufactured blade anti-corrosion layer using laser melting and coating technique
Method.
Background technique:
Steam turbine is the rotary power machinery that the energy of steam is converted into mechanical work, also known as steam turbine, main use
It is used as prime mover of power generation, various pumps, blower, compressor and propeller for vessels etc. can also be directly driven, steamer can also be utilized
The steam discharge of machine or intermediate extraction meet production and heat supply needs in life.
The working environment of turbine blade is the final stage penult for having strong corrosivity, especially generating set to blade
The especially severity of corrosion of blade to resist high temperature and pressure aqueous corrosion, uses for a long time in the leading edge of secondary second last stage blade
Silver soldering is burn-on the stellite alloy sheet of a pole high-temperature corrosion resistance, to improve the service life of secondary second last stage blade, but it is silver-colored
The sealing of weldering is still corrodible very serious, to affect the service life of secondary second last stage blade.
Summary of the invention:
It is an object of the invention to provide a kind of methods for being manufactured blade anti-corrosion layer using laser melting and coating technique, solve above-mentioned existing
There is one or more in technical problem.
In order to solve the above technical problems, using laser melting and coating technique, to be manufactured blade corrosion-resistant the present invention provides a kind of
The method of layer, innovative point are: specific step is as follows:
(1) laser melting coating agent selects: laser melting coating agent is stellite powder, and the granularity of stellite is 45 μm；
(2) processing of formed blades: carrying out milling machine to the leading edges of formed blades and handle to obtain milling bottom blade, mill bottom with a thickness of
1mm after the completion cleans out milling bottom blade；
(3) laser melting coating: to the leading edge progress Laser Cladding Treatment of milling bottom blade, laser output power 2000w, hot spot is straight
Diameter is 3mm, and milling bottom blade obtains cladding blade after Laser Cladding Treatment；
(4) drying and processing: cladding blade is put into baking oven and carries out drying and processing, oven temperature is selected as 120 DEG C, drying time
0.5h。
Further, the cladding time of above-mentioned milling bottom blade is directly proportional with the milling width of bottom blade.
The beneficial effects of the present invention are: blade corrosion resistant is manufactured using laser melting and coating technique the present invention provides a kind of
The method for losing layer, using the characteristic of the pole high-temperature corrosion resistance of stellite, using laser melting coating to the leading edge of formed blades
Built-up welding processing is carried out, so that in the heap postwelding for completing stellite, stellite can be integrally formed with blade, not only mention
The high corrosion resistance of blade, while also extending the service life of blade.
Detailed description of the invention:
Fig. 1 is process flow chart of the invention.
Specific embodiment:
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the examples below, which only uses
In explaining the present invention, it is not intended to limit the scope of the present invention..
In the present invention, using Zhuzhou new energy power Machinery Co., Ltd. 101BJAT steam turbine provide formed blades into
The processing of row Laser Cladding Treatment, in order to improve reliability of the invention, selected formed blades are the 8th grade and the 9th grade dynamic
Blade, the specific steps are as follows:
(1) laser melting coating agent selects: laser melting coating agent is stellite powder, and the granularity of above-mentioned stellite is 45 μm
(325 mesh)；
(2) processing of formed blades: carrying out milling machine to the leading edges of formed blades and handle to obtain milling bottom blade, mill bottom with a thickness of
1mm after the completion cleans out above-mentioned milling bottom blade；
(3) laser melting coating: to the leading edge progress Laser Cladding Treatment of milling bottom blade, laser output power 2000w, hot spot is straight
Diameter is 3mm, and above-mentioned milling bottom blade obtains cladding blade after Laser Cladding Treatment；
(4) drying and processing: being put into baking oven for above-mentioned cladding blade and carry out drying and processing, and oven temperature is selected as 120 DEG C, when drying
Between 0.5h.
Wherein the cladding time of above-mentioned milling bottom blade is directly proportional with the milling width of bottom blade, it is however generally that, in laser melting coating
In the process, the width for milling bottom blade is bigger, and the cladding time is also longer, on the other hand, in cladding process, the scanning of laser
The slower speed the better, to reach optimal cladding effect.
The present invention is in R&D process, and key point has at following 4 points: first laser cladding agent selects 45 μm of Si Taili to close
Bronze end, one side stellite belong to the alloy of pole high-temperature corrosion resistance, it is corrosion resistant that secondary second last stage blade can be improved
Effect, on the other hand, the selection of 45 micron granularities can achieve optimal cladding effect, granularity is excessive will affect it is subsequent corrosion-resistant
Effect and undersized then will increase the difficulty of laser melting coating, second is the processing of formed blades, by formed blades leading edge
Mill bottom 1mm so that the mean depth of subsequent melting welding slot is 1mm or so, the processing at this milling bottom can reach it is subsequent recently
Anticorrosion effect, while will not influence the normal work of secondary second last stage blade again, third is in laser cladding process, and laser is defeated
The control of power, cladding time, spot diameter and scanning speed out, four kinds of parameters directly affect leaf after post laser cladding
The corrosion resistant effect of piece, by statistics indicate that, be 2000w, spot diameter 3mm in laser output power, scanning speed is
300mm/min reaches best cladding effect, and the laser melting coating time is longer, and cladding effect is better, and fourth is that complete in laser melting coating
Cladding blade is put into baking oven drying, the cladding effect of subsequent cladding blade can be made to reach most preferably by Cheng Hou, and oven temperature
120 DEG C are selected as, the selection of drying time 0.5h can prevent cladding deformable blade, influence the use of subsequent cladding blade.
It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and explanation
It is merely illustrated the principles of the invention described in book, without departing from the spirit and scope of the present invention, the present invention also has
Various changes and modifications, these changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention
It is defined by the appending claims and its equivalent thereof.
Claims (2)
1. a kind of method for being manufactured blade anti-corrosion layer using laser melting and coating technique, it is characterised in that: specific step is as follows:
Laser melting coating agent selects: the laser melting coating agent is stellite powder, and the granularity of the stellite is 45 μ
m；
The processing of formed blades: carrying out milling machine to the leading edges of the formed blades and handle to obtain milling bottom blade, mill bottom with a thickness of
1mm after the completion cleans out the milling bottom blade；
Laser melting coating: Laser Cladding Treatment, laser output power 2000w, spot diameter are carried out to the leading edge of milling bottom blade
For 3mm, the milling bottom blade obtains cladding blade after Laser Cladding Treatment；
Drying and processing: the cladding blade is put into baking oven and carries out drying and processing, oven temperature is selected as 120 DEG C, drying time
0.5h。
2. a kind of method for being manufactured blade anti-corrosion layer using laser melting and coating technique according to claim 1, special
Sign is: the width of the cladding time of the milling bottom blade and the milling bottom blade is directly proportional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787465.9A CN110373669A (en) | 2019-08-26 | 2019-08-26 | A method of blade anti-corrosion layer is manufactured using laser melting and coating technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787465.9A CN110373669A (en) | 2019-08-26 | 2019-08-26 | A method of blade anti-corrosion layer is manufactured using laser melting and coating technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110373669A true CN110373669A (en) | 2019-10-25 |
Family
ID=68260621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910787465.9A Pending CN110373669A (en) | 2019-08-26 | 2019-08-26 | A method of blade anti-corrosion layer is manufactured using laser melting and coating technique |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006094935A1 (en) * | 2005-03-05 | 2006-09-14 | Alstom Technology Ltd | Turbine blades and methods for depositing an erosion resistant coating on the same |
| CN102453896A (en) * | 2010-10-26 | 2012-05-16 | 沈阳大陆激光成套设备有限公司 | Preparation method of wear-resistant and corrosion-resistant alloy coating on surface of gas inlet edge of last-stage blade of steam turbine |
| 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 |
| CN103668188A (en) * | 2013-12-31 | 2014-03-26 | 无锡透平叶片有限公司 | Water-erosion preventing method for turbine blade by laser cladding |
| CN104533539A (en) * | 2014-12-31 | 2015-04-22 | 无锡透平叶片有限公司 | Laser cladding structure of steam turbine blade air inlet side |
-
2019
- 2019-08-26 CN CN201910787465.9A patent/CN110373669A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006094935A1 (en) * | 2005-03-05 | 2006-09-14 | Alstom Technology Ltd | Turbine blades and methods for depositing an erosion resistant coating on the same |
| CN102453896A (en) * | 2010-10-26 | 2012-05-16 | 沈阳大陆激光成套设备有限公司 | Preparation method of wear-resistant and corrosion-resistant alloy coating on surface of gas inlet edge of last-stage blade of steam turbine |
| 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 |
| CN103668188A (en) * | 2013-12-31 | 2014-03-26 | 无锡透平叶片有限公司 | Water-erosion preventing method for turbine blade by laser cladding |
| CN104533539A (en) * | 2014-12-31 | 2015-04-22 | 无锡透平叶片有限公司 | Laser cladding structure of steam turbine blade air inlet side |
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Application publication date: 20191025 |
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