CN1915579A - Technical method for repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc - Google Patents
Technical method for repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc Download PDFInfo
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- CN1915579A CN1915579A CN 200610010513 CN200610010513A CN1915579A CN 1915579 A CN1915579 A CN 1915579A CN 200610010513 CN200610010513 CN 200610010513 CN 200610010513 A CN200610010513 A CN 200610010513A CN 1915579 A CN1915579 A CN 1915579A
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Abstract
A microarc build-up welding technology for repairing the damage on rotor's axle neck of electric turbogenerator includes such steps as removing oily dirt, trimming the damaged position, microarc build-up welding with consumable electrode, primary grinding, fine grinding, and polishing.
Description
Technical field
The invention belongs to the plant equipment service technique, relate generally to the pile up welding in element of arc restorative procedure of damage on axle neck of rotor of turbo generator through.
Background technology
Turbine rotor and rotor are the critical components of Turbo-generator Set, and the quality of rotor is the key factor that directly influences unit operation.Owing to make a variety of causes such as processing, transportation and power plant's operation, contingencies such as rotor journal is pulled, gouge often take place.The vibration performance of all even units of oil film when the damage defect influence of axle journal moves, serious defective also influences the intensity of rotor.The part is pulled and is caused stress to concentrate, and brings serious harm to unit safety operation.The restorative procedure of traditional elimination defective mainly is that the axle journal car is little, and galleting tile also has the reparation of the brush plating method of employing again.The axle journal car snapshot of oneself rings the intensity of axle, and workload is big, and the cycle is long, expense is high; The brush plating reparation is influenced by brushing coating bond strength, the intensity of brushing coating own, stress factors etc., can not get permanent coating satisfactory for result.
Summary of the invention
Purpose of the present invention is exactly at above-mentioned existing to carrying out the technical problem that restorative procedure exists after the rotor journal damage, design provides a kind of repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc process, reach that intensity does not reduce, reduces the repair amount after the axle journal reparation, shorten repair the duration, reduce rehabilitation expense, the purpose of assurance repairing quality.
1., surface early stage handles the object of the present invention is achieved like this: the repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc process:: to pull, the rotor of steam turbo generator axle journal position of gouge carries out oil removal with acetone, repair at the position that will be difficult for soldering with the bright and beautiful file of pin again; 2., pile up welding in element of arc: adopt from the electric spark deposition surfacing equipment of molten electrode and will cover in the defective trenches and pit of soldering at the rotor of steam turbo generator axle journal from the molten electrode wire differential of the arc is molten; When the soldering surface is more coarse, carry out the filing finishing with file, continue pile up welding in element of arc thereafter to enough height; 3., thick reconditioning: with file axle journal pile up welding in element of arc position is roughly ground, reserve and be higher than 0.03 millimeter built-up welding material of axle journal standard size; The position is not filled up in the part continue to replenish built-up welding, reach until whole surfacing parts and be higher than the standard-sized enough height of axle journal, with smooth file its whole axle journal surfacing parts are roughly ground again, leave and exceed 0.01 millimeter built-up welding material of axle journal standard size; 4., refine mill: with No. 120 emery cloths the built-up welding material that exceeds 0.01 millimeter of axle journal standard size is finish grinded, reach the axle journal standard size; 5., polishing: with No. 180 emery cloths whole surfacing parts on the rotor of steam turbo generator axle journal are carried out polishing operation, reach the fineness requirement.
The present invention adopts the electric spark deposition surfacing equipment from molten electrode; the operating type of its rotary consutrode, argon shield and low-heat input; make indeformable, the performance no change of being repaired by built-up welding of rotor of steam turbo generator axle journal matrix; to the heat affected area degree of depth of matrix 0.07-0.11 millimeter only; residual stress is minimum; coating and matrix metallurgical binding intensity height are mended in built-up welding, the coating quality is good; dense structure, its bond strength, to mend coating intensity, mend the coating quality be that technology institute such as brush plating is unrivaled.This process is convenient working at the scene, rotor can be released also can not release and be finished construction, and technology is reliable, and the repair amount is little, the reparation duration is short, rehabilitation expense is low, its pile up welding in element of arc is mended layer and is belonged to permanent cover layer, can guarantee unit long-term safety operation use.
The specific embodiment
Give an actual example below and be elaborated.
Repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc process: 1., surface early stage handles: to pull, the rotor of steam turbo generator axle journal position of gouge carries out oil removal with acetone, repair at the position that will be difficult for soldering with the bright and beautiful file of pin again; 2., pile up welding in element of arc: adopt from the electric spark deposition surfacing equipment of molten electrode and will cover in the defective trenches and pit of soldering at the rotor of steam turbo generator axle journal from the molten electrode wire differential of the arc is molten; When the soldering surface is more coarse, carry out the filing finishing with file, continue pile up welding in element of arc thereafter to enough height; 3., thick reconditioning: with file axle journal pile up welding in element of arc position is roughly ground, reserve and be higher than 0.03 millimeter built-up welding material of axle journal standard size; The position is not filled up in the part continue to replenish built-up welding, reach until whole surfacing parts and be higher than the standard-sized enough height of axle journal, with smooth file its whole axle journal surfacing parts are roughly ground again, leave and exceed 0.01 millimeter built-up welding material of axle journal standard size; 4., refine mill: with No. 120 emery cloths the built-up welding material that exceeds 0.01 millimeter of axle journal standard size is finish grinded, reach the axle journal standard size; 5., polishing: with No. 180 emery cloths whole surfacing parts on the rotor of steam turbo generator axle journal are carried out polishing operation, reach the fineness requirement.
Electric spark deposition surfacing equipment from molten electrode can be selected DZ1400 or DZ1600 electric spark deposition built-up welding machine for use, and its electrical power is 1400W or 1600W, and molten certainly electrode material is nickel-base alloy ERNiCr-3, and molten certainly electrode diameter is 4 millimeters of Φ 2, Φ 3.2 or Φ.
During the operation of pile up welding in element of arc repairing rotor axle journal, with the rotor ground connection, start the rotary certainly molten electrode alignment workpiece, defect position of power supply with DZ1400 or DZ1600 electric spark deposition/built-up welding machine, its molten electrode material differential of the arc heap covers and replenishes in defective trenches or the pit.Slightly, when refine is ground, should through edge of a knife leveling ruler commonly used as the reference measurement reconditioning highly guarantee operation quality with unmarred axle journal index plane.Can return to former axle journal standard size with rotor of steam turbo generator axle journal rejected region after the reparation of this process, compare with lesion size not, its deviation is in the 0--0.02 millimeter, and surface roughness is more than Ra0.8 μ m.The application of this method in the repairing damage on axle neck of rotor of turbo generator through defective has crucial meaning.
Claims (1)
1, a kind of repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc process is characterized in that:
1., surface early stage handles: to pull, the rotor of steam turbo generator axle journal position of gouge carries out oil removal with acetone, repair at the position that will be difficult for soldering with the bright and beautiful file of pin again;
2., pile up welding in element of arc: adopt from the electric spark deposition surfacing equipment of molten electrode and will cover in the defective trenches and pit of soldering at the rotor of steam turbo generator axle journal from the molten electrode wire differential of the arc is molten; When the soldering surface is more coarse, carry out the filing finishing with file, continue pile up welding in element of arc thereafter to enough height;
3., thick reconditioning: with file axle journal pile up welding in element of arc position is roughly ground, reserve and be higher than 0.03 millimeter built-up welding material of axle journal standard size; The position is not filled up in the part continue to replenish built-up welding, reach until whole surfacing parts and be higher than the standard-sized enough height of axle journal, with smooth file its whole axle journal surfacing parts are roughly ground again, leave and exceed 0.01 millimeter built-up welding material of axle journal standard size;
4., refine mill: with No. 120 emery cloths the built-up welding material that exceeds 0.01 millimeter of axle journal standard size is finish grinded, reach the axle journal standard size;
5., polishing: with No. 180 emery cloths whole surfacing parts on the rotor of steam turbo generator axle journal are carried out polishing operation, reach the fineness requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610010513 CN1915579A (en) | 2006-09-07 | 2006-09-07 | Technical method for repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610010513 CN1915579A (en) | 2006-09-07 | 2006-09-07 | Technical method for repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc |
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| CN1915579A true CN1915579A (en) | 2007-02-21 |
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| CN 200610010513 Pending CN1915579A (en) | 2006-09-07 | 2006-09-07 | Technical method for repairing damage on axle neck of rotor of turbo generator through pile up welding in element of arc |
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| CN101920429A (en) * | 2010-08-07 | 2010-12-22 | 甘肃景程光电技术有限公司 | Combustion engine crankshaft electric spark overlaying repairing process |
| CN101947712A (en) * | 2010-09-08 | 2011-01-19 | 徐海 | Mechanical transmission shaft repair method |
| CN102091906A (en) * | 2010-12-22 | 2011-06-15 | 北京工业大学 | Method for repairing central slot of scraper conveyor |
| CN102218638A (en) * | 2010-04-14 | 2011-10-19 | 王茂才 | Process method for repairing gas turbine vanes by micro-arc deposition coating |
| CN102699618A (en) * | 2012-06-18 | 2012-10-03 | 株洲南方燃气轮机成套制造安装有限公司 | Welding repair method of rotor axis neck |
| CN102935576A (en) * | 2012-11-29 | 2013-02-20 | 唐山开滦广汇设备制造有限公司 | Outer surface damage repair technology for shaft parts |
| CN103212937A (en) * | 2013-04-24 | 2013-07-24 | 莱芜钢铁集团有限公司 | On-line overlaying welding fan journal repairing method |
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| CN105965203A (en) * | 2016-07-20 | 2016-09-28 | 嘉兴翰德圣激光再制造技术有限公司 | Bearing seat repairing technology of vacuum pump shaft |
| CN106141561A (en) * | 2016-07-20 | 2016-11-23 | 嘉兴翰德圣激光再制造技术有限公司 | A kind of renovation technique of multistage pump pump shaft |
| CN106166660A (en) * | 2016-07-20 | 2016-11-30 | 嘉兴翰德圣激光再制造技术有限公司 | A kind of smooth shaft online renovation technique of abrasion |
| CN106425700A (en) * | 2016-10-16 | 2017-02-22 | 上海车功坊汽车服务有限公司 | Grinding and polishing process for repair of aluminum alloy hub |
| CN106670739A (en) * | 2016-12-05 | 2017-05-17 | 安徽兴林机械集团有限公司 | Surface treatment technology for grinding roller surfacing |
| CN108971880A (en) * | 2018-07-26 | 2018-12-11 | 南京钢铁股份有限公司 | The online restorative procedure of circular conical surface on a kind of axis |
| CN112548482A (en) * | 2020-10-28 | 2021-03-26 | 中国人民解放军空军工程大学航空机务士官学校 | TC4 titanium alloy structure in-situ growth repair process based on micro-arc additive manufacturing and tool kit |
| CN114346765A (en) * | 2021-11-23 | 2022-04-15 | 宁夏金昱元广拓能源有限公司 | Method for treating outer surface of carbon steel drum |
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2006
- 2006-09-07 CN CN 200610010513 patent/CN1915579A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102218638A (en) * | 2010-04-14 | 2011-10-19 | 王茂才 | Process method for repairing gas turbine vanes by micro-arc deposition coating |
| CN101920429A (en) * | 2010-08-07 | 2010-12-22 | 甘肃景程光电技术有限公司 | Combustion engine crankshaft electric spark overlaying repairing process |
| CN101947712A (en) * | 2010-09-08 | 2011-01-19 | 徐海 | Mechanical transmission shaft repair method |
| CN101947712B (en) * | 2010-09-08 | 2012-08-15 | 徐海 | Mechanical transmission shaft repair method |
| CN102091906A (en) * | 2010-12-22 | 2011-06-15 | 北京工业大学 | Method for repairing central slot of scraper conveyor |
| CN102091906B (en) * | 2010-12-22 | 2012-07-25 | 北京工业大学 | Method for repairing central slot of scraper conveyor |
| CN102699618B (en) * | 2012-06-18 | 2014-10-01 | 株洲南方燃气轮机成套制造安装有限公司 | Welding repair method of rotor axis neck |
| CN102699618A (en) * | 2012-06-18 | 2012-10-03 | 株洲南方燃气轮机成套制造安装有限公司 | Welding repair method of rotor axis neck |
| CN102935576A (en) * | 2012-11-29 | 2013-02-20 | 唐山开滦广汇设备制造有限公司 | Outer surface damage repair technology for shaft parts |
| CN103212937A (en) * | 2013-04-24 | 2013-07-24 | 莱芜钢铁集团有限公司 | On-line overlaying welding fan journal repairing method |
| CN103801893A (en) * | 2013-12-31 | 2014-05-21 | 青岛前进船厂 | Method for corrosion repair and long-term protection of ship propeller |
| CN103801893B (en) * | 2013-12-31 | 2016-05-25 | 青岛前进船厂 | A kind of method for propeller for vessels Corrosion Repair and long-lasting protection |
| CN105269241A (en) * | 2015-11-27 | 2016-01-27 | 莱芜钢铁集团有限公司 | Hydraulic cylinder repairing method and hydraulic cylinder |
| CN105965203A (en) * | 2016-07-20 | 2016-09-28 | 嘉兴翰德圣激光再制造技术有限公司 | Bearing seat repairing technology of vacuum pump shaft |
| CN106141561A (en) * | 2016-07-20 | 2016-11-23 | 嘉兴翰德圣激光再制造技术有限公司 | A kind of renovation technique of multistage pump pump shaft |
| CN106166660A (en) * | 2016-07-20 | 2016-11-30 | 嘉兴翰德圣激光再制造技术有限公司 | A kind of smooth shaft online renovation technique of abrasion |
| CN106425700A (en) * | 2016-10-16 | 2017-02-22 | 上海车功坊汽车服务有限公司 | Grinding and polishing process for repair of aluminum alloy hub |
| CN106670739A (en) * | 2016-12-05 | 2017-05-17 | 安徽兴林机械集团有限公司 | Surface treatment technology for grinding roller surfacing |
| CN106670739B (en) * | 2016-12-05 | 2019-02-12 | 安徽兴林机械集团有限公司 | A kind of process of surface treatment of grinding roll overlaying |
| CN108971880A (en) * | 2018-07-26 | 2018-12-11 | 南京钢铁股份有限公司 | The online restorative procedure of circular conical surface on a kind of axis |
| CN112548482A (en) * | 2020-10-28 | 2021-03-26 | 中国人民解放军空军工程大学航空机务士官学校 | TC4 titanium alloy structure in-situ growth repair process based on micro-arc additive manufacturing and tool kit |
| CN114346765A (en) * | 2021-11-23 | 2022-04-15 | 宁夏金昱元广拓能源有限公司 | Method for treating outer surface of carbon steel drum |
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