CN102677048A - Laser repairing technology for high-speed motor rotor - Google Patents
Laser repairing technology for high-speed motor rotor Download PDFInfo
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- CN102677048A CN102677048A CN2012101663421A CN201210166342A CN102677048A CN 102677048 A CN102677048 A CN 102677048A CN 2012101663421 A CN2012101663421 A CN 2012101663421A CN 201210166342 A CN201210166342 A CN 201210166342A CN 102677048 A CN102677048 A CN 102677048A
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- high speed
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Abstract
The invention relates to a laser repairing technology for a high-speed motor rotor. The laser repairing technology for the high-speed motor rotor comprises the following steps: A, treating the surface of the rotor, and performing failure analysis on the rotor; B, according to a result of the failure analysis of the rotor, optimizing technical parameters, performing laser cladding, and with a rapid cross flow carbon dioxide laser as a light source, performing continuous feed lapping scanning on the rotor in a preset powder feeding manner, wherein used alloy powder comprises the following components in weight percent: 0-0.15% of C, 8-12% of Cr, 1.3-1.7% of B, 2.5-4.5% of Si, 0 to 8% of Fe and C in balancing amount; and C, detecting. The laser repairing technology for the high-speed motor rotor can perform laser cladding on a failed part of the surface of the rotor to reduce deformation of the failed part; and after being repaired, the rotor has a size meeting the using requirement and has a relatively high strength at a high temperature of 650-1000 DEG C.
Description
Technical field
The present invention relates to a kind of laser cladding method, especially a kind of laser melting coating restorative procedure of rotor.
Background technology
The high speed and precision component can lose efficacy because of the processing error or because of life-time service produces in manufacturing processed.As adopt common technique for overlaying to repair, and the heat input is big, and the heat affected zone is big, and part is yielding.If adopt spraying, electroplate, its bonding surface is physical bond, can not satisfy request for utilization.Motor can both be used in all trades and professions, and motor speed is very high, mostly at 3000-5000 rev/min, the highlyest can reach 10000 rev/mins.The wearing and tearing of the use rotor of motor are maximum.Its bearing retaining of normal rotor wear is the most severe.Adopt common restorative procedure all can make rotor produce distortion, be the rotating speed generation obstacle of rotor, influenced the speed of rotation and the precision of rotor.
Laser melting coating is meant that placing selecteed coated material on by the cladding matrix surface with different adding material modes makes it to melt simultaneously with the matrix surface skim through laser irradiation; And it is extremely low to form extent of dilution behind the rapid solidification; Become the top coat of metallurgical binding with matrix; Significantly improve the process method of wear-resisting, anti-corrosion, heat-resisting, the anti-oxidant and electrical specification of substrate surface, thereby reach the purpose of surface-treated or reparation.With built-up welding, spraying, plating and gas phase sediment-filled phase ratio, laser melting coating has that extent of dilution is little, dense structure, coating and characteristics such as matrix bond is good, be fit to that cladding material is many, granularity and content are big.How the laser melting and coating technique effective application being repaired in the high speed rotor of motor surface, is the problem that those skilled in the art need solve.
Summary of the invention
The technical problem that the present invention will solve provides a kind ofly carries out laser melting coating to the rotor surface failure site; Make in its repair process deflection minimum; Repair the back rotor size and reach request for utilization, the high temperature lower rotor part has the laser repairing process of the high speed rotor of motor of higher-strength.
In order to solve the problems of the technologies described above, the invention provides a kind of laser repairing process of high speed rotor of motor, it is characterized in that, may further comprise the steps:
A. rotor surface is handled, rotor is carried out failure analysis;
B. according to the failure analysis result of rotor, optimize processing parameter, carry out laser melting coating;
The mode of powder feeding is preset in employing, is that light source carries out the scanning of continuous helical feeding overlap joint to rotor with the fast-transverse-flow CO; Laser power is 1700W to 2100W, and absolute altitude is 260mm to 275mm, and spot size is 10mm * 1.8mm, and sweep velocity is 120mm/min to 150mm/min, and amount of lap is 3mm, and powder sending quantity is 6g/min to 12g/min; The component of the powdered alloy that is adopted and weight percent content are C≤0.15%, Cr:8% to 12%, and B:1.3% to 1.7%, Si:2.5% to 4.5%, Fe≤8%, all the other are Ni;
C. detect.
In order to make the roller footpath of repairing high carbon alloy rotor later can reach requirement, a kind of optimized technical scheme is: the cladding layer thickness of above-mentioned laser melting coating is 1mm to 5mm.
In order to make high carbon alloy rotor to be repaired in the process of laser melting coating, repair successfully, and obtain better repairing effect, a kind of optimized technical scheme is: above-mentioned steps A removes epitrochanterian dust, greasy dirt, corrosion; The size at each position of detection rotor is confirmed failure site and abrasion loss thereof; To rotor carry out radially, face runout check, confirm rotor deformation; Remove the fatigue layer 0.5mm to 2mm at rotor fails position, and clean.
For the quality of the high carbon alloy rotor after guaranteeing to repair, a kind of optimized technical scheme is: above-mentioned steps C is the detection rotor surface hardness; The detection rotor deflection; Rotor surface is carried out mechanical workout; Detect a flaw, verification.
Technique scheme of the present invention is compared prior art and is had the following advantages: adopt special powdered alloy in the laser repairing process of high speed rotor of motor of the present invention; Utilize the Cr element that nickel-base alloy is carried out element and strengthen, improve the hardness and the wear resistance of cladding layer; Through adding an amount of B, Si, significantly reduce alloy melting point, form the low melting eutectics body, cladding layer is had sclerosis, strengthening effect, help improving use characteristics.This process using broad band laser bundle, efficient is higher; The mode of powder feeding is preset in employing; Strict control powder sending quantity; And laser power, sweep velocity, amount of lap etc. are optimized; Rotor is out of shape minimum or indeformable in repair process, the rotor surface hardness after the reparation is reached more than the 25HRC, and under 650～1000 ℃ of high temperature, higher intensity is arranged.This technology makes that the homogeneity of structure of cladding layer is good, thickness and even hardness; The fusion rate of cladding layer and the matrix at rotor fails position is high, it is tight to combine; Rotor surface does not have crackle and pore, and the rotor after the reparation has higher creeping limit, good creep rupture strength and thermal fatigue resistance and thermal destruction performance preferably.
Embodiment
The concrete steps of the laser repairing process of the rotor high-speed rotor of present embodiment are following:
A. rotor surface to be repaired is handled, rotor is carried out failure analysis.
With removings such as epitrochanterian dust, greasy dirt, corrosions; The size at each position of detection rotor is confirmed failure site and abrasion loss thereof; To rotor carry out radially, face runout check, whether the check rotor has metamorphism; Remove the fatigue layer 1mm at rotor fails position through polishing, and clean.
B. according to the failure analysis result of rotor, optimize processing parameter, carry out laser melting coating.
The mode of powder feeding is preset in employing, is that light source carries out the scanning of continuous helical feeding overlap joint to rotor with the fast-transverse-flow CO.Laser power is 2000W, and absolute altitude (being that laser apparatus leaves the distance between the Substrate, absolute altitude=focal length+defocusing amount) is 265mm, and spot size is 10mm * 1.8mm, and sweep velocity is 130 mm/min, and amount of lap is 3mm, and powder sending quantity is 8g/min.The component of the powdered alloy that is adopted and weight percent content are C:0.15%, Cr:10%, and B:1.5%, Si:2.5%, Fe:5%, all the other are Ni.Cladding layer thickness is 3mm.
C. after repairing end, detect.
Detect surface hardness; Detect deflection; Requirement according to drawing is carried out mechanical workout to rotor surface; Whether detect a flaw, detecting has pore, slag inclusion, slight crack etc. to influence the rotor mechanical performance defect; Carry out verification, whether quality inspection is qualified.
Obviously, the foregoing description only be for clearly the present invention is described and is done for example, and be not to be qualification to embodiment of the present invention.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (4)
1. the laser repairing process of a high speed rotor of motor is characterized in that, may further comprise the steps:
A. rotor surface is handled, rotor is carried out failure analysis;
B. according to the failure analysis result of rotor, optimize processing parameter, carry out laser melting coating;
The mode of powder feeding is preset in employing, is that light source carries out the scanning of continuous helical feeding overlap joint to rotor with the fast-transverse-flow CO; Laser power is 1700W to 2100W, and absolute altitude is 260mm to 275mm, and spot size is 10mm * 1.8mm, and sweep velocity is 120mm/min to 150mm/min, and amount of lap is 3mm, and powder sending quantity is 6g/min to 12g/min; The component of the powdered alloy that is adopted and weight percent content are C≤0.15%, Cr:8% to 12%, and B:1.3% to 1.7%, Si:2.5% to 4.5%, Fe≤8%, all the other are Ni;
C. detect.
2. according to the laser repairing process of the described high speed rotor of motor of claim 1, it is characterized in that: the cladding layer thickness of said laser melting coating is 1mm to 5mm.
3. according to the laser repairing process of the described high speed rotor of motor of claim 1, it is characterized in that: said steps A is that epitrochanterian dust, greasy dirt, corrosion are removed; The size at each position of detection rotor is confirmed failure site and abrasion loss thereof; To rotor carry out radially, face runout check, confirm rotor deformation; Remove the fatigue layer 0.5mm to 2mm at rotor fails position, and clean.
4. according to the laser repairing process of the described high speed rotor of motor of claim 1, it is characterized in that: said step C is the detection rotor surface hardness; The detection rotor deflection; Rotor surface is carried out mechanical workout; Detect a flaw, verification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101663421A CN102677048A (en) | 2012-05-27 | 2012-05-27 | Laser repairing technology for high-speed motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101663421A CN102677048A (en) | 2012-05-27 | 2012-05-27 | Laser repairing technology for high-speed motor rotor |
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| CN102677048A true CN102677048A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101663421A Pending CN102677048A (en) | 2012-05-27 | 2012-05-27 | Laser repairing technology for high-speed motor rotor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305841A (en) * | 2013-06-29 | 2013-09-18 | 苏州唐氏机械制造有限公司 | Laser repair method for punching die |
| CN103343339A (en) * | 2013-06-29 | 2013-10-09 | 苏州唐氏机械制造有限公司 | Laser restoration method for drawing die |
| CN105369245A (en) * | 2014-08-28 | 2016-03-02 | 江苏万力机械股份有限公司 | Laser repairing and strengthening composite treating method for damage cutter of shearing equipment |
| CN108620809A (en) * | 2018-05-11 | 2018-10-09 | 岳阳大陆激光技术有限公司 | The online restorative procedure of 1000MW generating set turbine rotor packing axle journals |
| CN109536945A (en) * | 2018-11-30 | 2019-03-29 | 成都大陆激光技术有限公司 | A method of repairing generator rotor shaft neck |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242361A (en) * | 2011-06-29 | 2011-11-16 | 山东能源机械集团大族再制造有限公司 | Laser cladding method for mining hydraulic support column and mining stainless steel hydraulic column |
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2012
- 2012-05-27 CN CN2012101663421A patent/CN102677048A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242361A (en) * | 2011-06-29 | 2011-11-16 | 山东能源机械集团大族再制造有限公司 | Laser cladding method for mining hydraulic support column and mining stainless steel hydraulic column |
Non-Patent Citations (2)
| Title |
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| 无: "镍基合金粉末", 《百度文库》 * |
| 陈长军 等: "激光熔覆技术用于高附加值部件和设备的修复再制造", 《中国设备工程》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305841A (en) * | 2013-06-29 | 2013-09-18 | 苏州唐氏机械制造有限公司 | Laser repair method for punching die |
| CN103343339A (en) * | 2013-06-29 | 2013-10-09 | 苏州唐氏机械制造有限公司 | Laser restoration method for drawing die |
| CN103305841B (en) * | 2013-06-29 | 2015-11-18 | 苏州唐氏机械制造有限公司 | The laser repair method of piercing die |
| CN105369245A (en) * | 2014-08-28 | 2016-03-02 | 江苏万力机械股份有限公司 | Laser repairing and strengthening composite treating method for damage cutter of shearing equipment |
| CN108620809A (en) * | 2018-05-11 | 2018-10-09 | 岳阳大陆激光技术有限公司 | The online restorative procedure of 1000MW generating set turbine rotor packing axle journals |
| CN109536945A (en) * | 2018-11-30 | 2019-03-29 | 成都大陆激光技术有限公司 | A method of repairing generator rotor shaft neck |
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Application publication date: 20120919 |