CN1990159A - Method for repairing rotor propulsion disc - Google Patents
Method for repairing rotor propulsion disc Download PDFInfo
- Publication number
- CN1990159A CN1990159A CN 200510130876 CN200510130876A CN1990159A CN 1990159 A CN1990159 A CN 1990159A CN 200510130876 CN200510130876 CN 200510130876 CN 200510130876 A CN200510130876 A CN 200510130876A CN 1990159 A CN1990159 A CN 1990159A
- Authority
- CN
- China
- Prior art keywords
- rotor
- laser
- cladding
- disk
- hopper
- 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.)
- Pending
Links
Images
Landscapes
- Laser Beam Processing (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention provides art steps of repair rotor pull force disk as follows : detection in factory of rotor : detecting rotor damage degree, rotor main size and shape and position tolerances; NDT; Thrust cleaning wear face of pull force disk surface : removing surface dirt, fatigue hardening layer and micro-cracks; laser cladding : standing the rotor, laser cladding with the carbon dioxide gas laser and transporting powder device in the way of synchronous transporting powder on the rotating equipment, operation : laser power is 600W ~ 2kW, spot diameter is 2 to 6mm, scanning speed of 2 to 20 mm / s, the cladding material is metal powder fit with the substrate body; machining and modifying shapes; completing produce and testing: dynamic balance adjustment. The advantages of the method are: the structure of cladding layer and substrate face are dense, grains is small, no cracks and inclusions and other defects; no insulation; small thermal deformation, low stress; low substrate body dilution rate, the size and location of cladding layer are controllable, and the melting machine amount is small after melting; cladding surface is antiwear and resist corrosion and scour.
Description
Technical field
The present invention relates to laser melting and coating technique, the process of utilizing the laser melting and coating technique repairing rotor propulsion disc is provided especially.
Background technology
Rotor in the rotating machinery (for example: flue gas turbine expander, steam turbine, compressor etc.), at work, except that the centrifugal action that is subjected to produce because of rotation, simultaneously also to produce axial thrust, the generation of axial thrust, can cause moving axially of rotor, be the axial displacement of restrict rotor, come the restrictive axial displacement with thrust disc mostly in this class rotor.In manufacturing and designing, very high to the specification requirement of thrust disc, the working face jitter values that its processing allows is often between 10 μ m～20 μ m.
Rotor is in the running course of work; because the influence of various unexpected factors; phenomenons such as axis tile, axial float appear in regular meeting; cause the wearing and tearing of rotor propulsion disc working face, plucking; cause in the rotor rotation that axially gap width is overproof, cause the sound friction, thereby destroyed the balance of rotor; cause over-difference of vibration, make the equipment can't operate as normal.
After the rotor propulsion disc wearing and tearing, producer often adopts dual mode to handle.The one, scrap rotor, the 2nd, utilize traditional overlaying method to handle.And the method for built-up welding because its heating-up temperature height, bath is dark, the heat affected area is big, bad control because rotor size is big, Heavy Weight decomposes difficulty, and after decomposing again assembling need certain hour, the post weld heat treatment difficulty is carried out.Often cause the Produced after Welding thermal stress to cause the big or rotor diameter of axle bending of distortion of thrust disc, influence is used.
Summary of the invention
The object of the present invention is to provide a kind of distortion and the crooked new process that does not slightly influence the repairing rotor propulsion disc of use of the rotor diameter of axle of postwelding thrust disc.
The invention provides a kind of method of repairing rotor propulsion disc, it is characterized in that processing step is as follows:
1) rotor is gone into factory's detection: detection rotor degree of injury, rotor key dimension and form and position tolerance;
2) nondestructive inspection;
3) cleaning thrust disc surface wear face: remove surface contaminants, fatigue hardening layer and micro-crack, expose parent metal gloss;
4) laser melting coating: rotor is holded up, place on the rotary tooling, adopt carbon dioxide gas laser to add powder feeder and the thrust disc damage surface is carried out the planar laser cladding with the synchronous powder feeding system mode, the parameter of operating process is: laser power is 600W～2000W, spot diameter is 2～6mm, sweep speed is 2～20mm/s, and cladding material is the metal powder that adapts with matrix; The planar laser cladding can reduce the waste of metal powder, improves the utilization rate of metal powder; Preset metal dust and melt fully, and matrix surface is little molten, the fine and close coating of acquisition and matrix metallurgical binding behind the rapid solidification, bond strength is not less than 90% of matrix;
Powder feeder is made of hopper 1, disk 2, control motor 3, scraper plate 4, receiving hopper 5, transmitting power high pressure nitrogen or argon gas 6, flexible pipe 7 and nozzle 8, hopper 1 places the top, edge of disk 2, scraper plate 4 place disk 2 with hopper 1 diameter opposed edges on, receiving hopper 5 places the below at disk 2 these places, receiving hopper connects flexible pipe 75 times, hope flexible pipe send high pressure nitrogen or argon gas 6 for 7 li, flexible pipe 7 is connected with nozzle 8 on the laser machine kinematic axis parts, and control motor 3 control disks 2 rotate.Control motor 3 is controlled by control system with the kinematic axis parts of laser machine.
5) machining replica: carry out by drawing;
6) final inspection: comprise check dimensional tolerance, form and position tolerance and nondestructive inspection;
7) rotor is carried out dynamic balance calibration by technical standard.
The laser melting coating rotor propulsion disc can be implemented under the situation of not preheating and carries out, in order to avoid crack, it is crooked effectively to have avoided the diameter of axle to produce, and the little distortion that produces behind the laser melting coating can be ignored substantially.Because thermal stress is little after its cladding, can directly process after the cladding, need not does destressing again and handle.
The method of repairing rotor propulsion disc provided by the invention, its laser melting coating can be the facade claddings.Because the rotor general size is bigger, weight is heavier, be difficult for holding up, and the thrust disc surface accuracy requires height, adopt carbon dioxide gas laser and powder feeder synchronous powder feeding system mode, when metal powder arrived matrix, light beam arrived simultaneously, metal powder is melted fully, and make matrix little molten the two combine.
The method of repairing rotor propulsion disc provided by the invention, its cleaning thrust disc surface wear face can be with mechanical chipping or manual grinding.
The method of repairing rotor propulsion disc provided by the invention, size is higher than drawing requirement 0.5-3mm behind its laser melting coating.
The method of repairing rotor propulsion disc provided by the invention, its advantage is: compare with traditional hot surfacing or built-up welding, cladding layer and matrix all do not have thick tissue behind the laser melting coating, cladding layer and basic Interface Microstructure densification, crystal grain is tiny, defective such as cladding organizes flawless, be mingled with; Cladding layer and matrix form metallurgical binding, do not come off; Thermal deformation is little, and stress is low; Low to the matrix dilution rate, cladding layer size and position can accurately be controlled, and melting machine amount is little; Cladding surface abrasion resistance, corrosion-resistant, anti-washing away.
Description of drawings
Fig. 1 is the structural representation of powder feeder.
The specific embodiment
Embodiment 1: the 3000kW of steam power plant turbine rotor thrust disc laser repairing.
1. rotor is gone into factory's detection: detection rotor degree of injury, rotor key dimension and form and position tolerance.
2. nondestructive inspection.
3. thrust disc surface wear face is carried out mechanical chipping or manual grinding cleaning, remove surface contaminants, fatigue hardening layer and micro-crack, expose parent metal gloss.
Rotor is placed on the rotary tooling, adopt carbon dioxide gas laser to add PLF-1 type powder feeder and with the synchronous powder feeding system mode thrust disc damage surface is carried out laser melting coating, laser power: 1000W, the about 4mm of spot diameter, sweep speed 10mm/s, cladding material are the metal powder that adapts with matrix.Size is higher than drawing requirement 1～2mm after the cladding.Powder feeder (as shown in Figure 1) is made of hopper 1, disk 2, control motor 3, scraper plate 4, receiving hopper 5, transmitting power high pressure nitrogen or argon gas 6, flexible pipe 7 and nozzle 8, hopper 1 places the top, edge of disk 2, scraper plate 4 place disk 2 with hopper 1 diameter opposed edges on, receiving hopper 5 places the below at disk 2 these places, receiving hopper connects flexible pipe 75 times, hope that flexible pipe send high pressure nitrogen or argon gas 6 for 7 li, flexible pipe 7 is connected with nozzle 8 on the laser machine kinematic axis parts, 2 rotations of control motor 3 control disks.Control motor 3 is controlled by control system with the kinematic axis parts of laser machine.
4. carry out the machining replica by drawing.
5. final inspection: comprise dimensional tolerance, form and position tolerance and nondestructive inspection.
6. rotor is carried out dynamic balance calibration by technical standard.
Embodiment 2:YL II-2000 flue gas turbine expander rotor propulsion disc laser repairing.
1. rotor is gone into factory's detection: detection rotor degree of injury, rotor key dimension and form and position tolerance.
2. nondestructive inspection.
3. thrust disc surface wear face is carried out mechanical chipping or manual grinding cleaning, remove surface contaminants, fatigue hardening layer and micro-crack, expose parent metal gloss.
Place on the horizontal axis rotary tooling, adopt carbon dioxide gas laser to add powder feeder and with the synchronous powder feeding system mode thrust disc damage surface is carried out the facade laser melting coating, laser power: 2000W, the about 6mm of spot diameter, sweep speed 20mm/s, cladding material are the metal powder that adapts with matrix.Powder feeder is made of hopper 1, disk 2, control motor 3, scraper plate 4, receiving hopper 5, transmitting power high pressure nitrogen or argon gas 6, flexible pipe 7 and nozzle 8, hopper 1 places the top, edge of disk 2, scraper plate 4 place disk 2 with hopper 1 diameter opposed edges on, receiving hopper 5 places the below at disk 2 these places, receiving hopper connects flexible pipe 75 times, hope flexible pipe send high pressure nitrogen or argon gas 6 for 7 li, flexible pipe 7 is connected with nozzle 8 on the laser machine kinematic axis parts, and control motor 3 control disks 2 rotate.Control motor 3 is controlled by control system with the kinematic axis parts of laser machine.Size is higher than drawing requirement 1.5～2.5mm behind the cladding layer.
4. carry out the machining replica by drawing.
5. survey of repairs: comprise dimensional tolerance, form and position tolerance and nondestructive inspection.
6. rotor is carried out dynamic balance calibration by technical standard.
Claims (4)
1, a kind of method of repairing rotor propulsion disc is characterized in that processing step is as follows:
1) rotor is gone into factory's detection: detection rotor degree of injury, rotor key dimension and form and position tolerance;
2) nondestructive inspection;
3) cleaning thrust disc surface wear face: remove surface contaminants, fatigue hardening layer and micro-crack, expose parent metal gloss;
4) laser melting coating: rotor is holded up, place on the rotary tooling, adopt carbon dioxide gas laser to add powder feeder and the thrust disc damage surface is carried out the planar laser cladding with the synchronous powder feeding system mode, laser power is 600W～2000W, spot diameter is 2～6mm, sweep speed is 2～20mm/s, and cladding material is the metal powder that adapts with matrix; Powder feeder is by hopper (1), disk (2), control motor (3), scraper plate (4), receiving hopper (5), transmitting power high pressure nitrogen or argon gas (6), flexible pipe (7) and nozzle (8) constitute, hopper (1) places the top, edge of disk (2), scraper plate (4) place disk (2) with hopper (1) diameter opposed edges on, receiving hopper (5) places the below at this place of disk (2), connect flexible pipe (7) under the receiving hopper (5), hope flexible pipe (7) lining send high pressure nitrogen or argon gas (6), flexible pipe (7) is connected with nozzle (8) on the laser machine kinematic axis parts, control motor (3) control disk (2) rotation.Control motor (3) is controlled by control system with the kinematic axis parts of laser machine;
5) machining replica: carry out by drawing.
6) final inspection: comprise check dimensional tolerance, form and position tolerance and nondestructive inspection.
7) rotor is carried out dynamic balance calibration by technical standard.
2, according to the method for the described repairing rotor propulsion disc of claim 1, it is characterized in that: described laser melting coating is the facade cladding.
3, according to the method for the described repairing rotor propulsion disc of claim 1, it is characterized in that: described cleaning thrust disc surface wear face is with mechanical chipping or manual grinding.
4, according to the method for the described repairing rotor propulsion disc of claim 1, it is characterized in that: size is higher than drawing requirement 0.5-3mm behind the described laser melting coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510130876 CN1990159A (en) | 2005-12-26 | 2005-12-26 | Method for repairing rotor propulsion disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510130876 CN1990159A (en) | 2005-12-26 | 2005-12-26 | Method for repairing rotor propulsion disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1990159A true CN1990159A (en) | 2007-07-04 |
Family
ID=38212818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510130876 Pending CN1990159A (en) | 2005-12-26 | 2005-12-26 | Method for repairing rotor propulsion disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1990159A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392372B (en) * | 2008-10-10 | 2010-06-16 | 华中科技大学 | Pulse type dust feeder |
| CN103122459A (en) * | 2011-11-18 | 2013-05-29 | 沈阳大陆激光技术有限公司 | Technological method for straightening shaft by laser cladding technology |
| CN103451650A (en) * | 2013-10-08 | 2013-12-18 | 岳阳大陆激光技术有限公司 | Laser quick repair process method for large rotary machine bearing bush |
| CN104723015A (en) * | 2015-03-02 | 2015-06-24 | 山东能源重型装备制造集团有限责任公司 | Remanufacturing method for mining-use wasted scraper blade |
| CN109048197A (en) * | 2018-07-25 | 2018-12-21 | 安徽华尔泰化工股份有限公司 | A kind of large scale equipment thrust disc field repairing method |
| CN114855161A (en) * | 2022-04-22 | 2022-08-05 | 营口裕隆光电科技有限公司 | Laser cladding preset powder feeder device |
-
2005
- 2005-12-26 CN CN 200510130876 patent/CN1990159A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392372B (en) * | 2008-10-10 | 2010-06-16 | 华中科技大学 | Pulse type dust feeder |
| CN103122459A (en) * | 2011-11-18 | 2013-05-29 | 沈阳大陆激光技术有限公司 | Technological method for straightening shaft by laser cladding technology |
| CN103122459B (en) * | 2011-11-18 | 2016-05-04 | 沈阳大陆激光技术有限公司 | A kind of process that adopts laser melting and coating technique school axle |
| CN103451650A (en) * | 2013-10-08 | 2013-12-18 | 岳阳大陆激光技术有限公司 | Laser quick repair process method for large rotary machine bearing bush |
| CN104723015A (en) * | 2015-03-02 | 2015-06-24 | 山东能源重型装备制造集团有限责任公司 | Remanufacturing method for mining-use wasted scraper blade |
| CN109048197A (en) * | 2018-07-25 | 2018-12-21 | 安徽华尔泰化工股份有限公司 | A kind of large scale equipment thrust disc field repairing method |
| CN114855161A (en) * | 2022-04-22 | 2022-08-05 | 营口裕隆光电科技有限公司 | Laser cladding preset powder feeder device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100718574B1 (en) | Apparatus and method for forming weld joints having compressive residual stress patterns | |
| CN1990159A (en) | Method for repairing rotor propulsion disc | |
| CN107675167A (en) | A kind of superhigh intensity steel member ultrasonic impact auxiliary laser cladding restorative procedure | |
| CN101397663A (en) | Novel repair and reconstruction technique for defect treatment of strip coiler hollow axle | |
| CN109746453B (en) | Laser repair method and device | |
| CN1660538A (en) | Laser method for repairing rotor shaft of generator and steam turbine and dedicated device | |
| CN101054667A (en) | Material for repairing high-hardness engine member abandonment die by laser and application thereof | |
| CN108707894A (en) | Powder and process used in a kind of laser melting coating self-lubricating abrasion-resistant cobalt-base alloys | |
| CN102127763A (en) | Laser repair method for worn bearing cylinder of gas turbo-expander | |
| KR102458041B1 (en) | Method for repairing turbine rotor using ultrasonic vibration and laser clading | |
| CN111304649A (en) | Preparation method of QT800 nodular cast iron bearing bush wear-resistant layer | |
| CN110747462A (en) | High-speed laser cladding process | |
| CN105543837A (en) | Repair method for copper-tungsten composite structure | |
| CN107419262A (en) | Universal express pump gear shaft terminal odontotripsis or crackle laser melting coating restorative procedure | |
| CN112210774A (en) | Laser cladding repair method for machine tool failure gear | |
| CN105349992B (en) | It is a kind of to be directed to aircraft vertical pin, the laser melting coating restorative procedure of bolt piece surface | |
| CN1990158A (en) | In situ renovation technique of steam turbine last stage blade | |
| WO2022222590A1 (en) | Additive manufacturing process, additive layer, additive product, and composite laser | |
| CN115044900A (en) | Remanufacturing process for diesel engine camshaft of mining heavy-duty vehicle | |
| CN115070061A (en) | Laser repairing method for undercarriage cracks | |
| CN115229212A (en) | Broadband laser cladding synchronous laser cleaning and polishing composite additive machining device and method | |
| Backes et al. | Laser-shape reconditioning and manufacturing of tools and machine parts | |
| CN115055853B (en) | Invalid part cleaning method for mold additive remanufacturing repair | |
| CN112548104A (en) | Method for reducing hot cracking sensitivity in die steel laser additive repair process | |
| CN114850888B (en) | Arc additive repairing and deformation reinforcing device for shaft type revolving body parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |