CN1191788A - Laser reparation method of ablated worm gear disc of smoke exhauster in oil refinery - Google Patents
Laser reparation method of ablated worm gear disc of smoke exhauster in oil refinery Download PDFInfo
- Publication number
- CN1191788A CN1191788A CN 97101560 CN97101560A CN1191788A CN 1191788 A CN1191788 A CN 1191788A CN 97101560 CN97101560 CN 97101560 CN 97101560 A CN97101560 A CN 97101560A CN 1191788 A CN1191788 A CN 1191788A
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- CN
- China
- Prior art keywords
- laser
- layer
- irradiation
- turbine disk
- erosion
- 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
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000779 smoke Substances 0.000 title claims description 5
- 239000000463 material Substances 0.000 claims abstract description 25
- 230000008439 repair process Effects 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 15
- 238000005266 casting Methods 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 27
- 230000003628 erosive effect Effects 0.000 claims description 22
- 229910045601 alloy Inorganic materials 0.000 claims description 14
- 239000000956 alloy Substances 0.000 claims description 14
- 238000005498 polishing Methods 0.000 claims description 7
- 239000011195 cermet Substances 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 239000002344 surface layer Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000010285 flame spraying Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 238000004372 laser cladding Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000007750 plasma spraying Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 238000002679 ablation Methods 0.000 abstract 1
- 239000011324 bead Substances 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 235000019504 cigarettes Nutrition 0.000 description 9
- 230000006378 damage Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000005480 shot peening Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Landscapes
- Laser Beam Processing (AREA)
Abstract
The laser reparation method, including laser deposition, laser casting and laser bead welding, is that the ablated area of turbine disc to be repaired is irradiated with laser beam after or while the repair material powder is fed until the designed sizes are reached. The said repair material is the same as or different from that of the turbine disc and repaired turbine disc has similar or even higher anti-ablation property. The said method results in high repair quality and makes it possible to repair turbine disc repeatedly.
Description
The present invention relates to a kind of flue gas turbine expander laser repair method, be mainly used in oil plant cigarette machine pot wheel disc and contained recovery physical dimension and certain mechanical strength in catalyst particle high-temperature flue gas erosion damage district and have higher anti-erosion property, also be applicable to the local surfaces intensive treatment of new cigarette machine pot wheel disc.
The cigarette machine is the important benefit device of oil plant as UTILIZATION OF VESIDUAL HEAT IN confession electric energy, and cigarette machine pot wheel disc is the crucial and very valuable parts of this cigarette machine, main " natural enemy " in restriction pot wheel disc serviceability and life-span is the high-temperature fuel gas erosion that contains catalyst granules from catalytic cracking system at present, the heavy damage of the feasible pot of this erosion wheel disc tenon region design structure, physical dimension significantly reduces, cause the reduction of mechanical strength herein thus, dynamic balancing destruction under the turbine disk rotates at a high speed and stress are concentrated, if adopt and to scrap old that more renew or, can only be to increase production cost or cause the shortening in the cycle of keeping the safety in production to methods such as surface, erosion district machinery polishing processing.
For solving the cigarette machine turbine disk by the erosion damage problem, purpose of the present invention provides a kind of laser repairing, rebuild the process in turbine disk erosion district, utilize the method reaching, and have the purpose of the higher safety in production cycle of operation by the renewable use of the turbine disk of erosion damage.
Process of the present invention is achieved in that
The surface treatment in the present invention's process turbine disk erosion district; The processing of the special molding loose tool tool of tenon tooth groove; Turbine disk location is with mobile; Laser irradiation generates; Irradiation generates the refine processing of layer; Generate the spray treatment of laminar surface.
Its detailed process flow is as follows:
At first ablated worm gear disc of smoke exhauster is carried out machinery polishing processing, remove the expression dirt, keep former erosion state; Utilize the black or materials making tenon tooth Slot shaping loose tool tools such as Al or Cu of stone according to turbine disk shape; Utilize rotating disk and nonmetal heat insulation backing plate, but the workbench of X-Y direction motion, and He-Ne finishes mechanism pointer location; Repair the surface at the turbine plate and adopt automatically and non-automatic mode fore-put powder, use CO
2Continuous or the pulsed irradiation of laser and Nb-YAG laser beam, and permanent Jiao or varifocal irradiation, constant speed and speed change irradiation and original position conformal radiation mode, flexibility and inflexibility optical system, laser cladding, laser casting and laser are piled layer by layer and are connect, the bottom of multiple repair layer generating mode, after the transition, the consistent or incomparable inconsistent grown layer structure of surface layer, the grown layer material is the material that each self-fluxing alloy of Co becomes the indirect extremely mutually certain proportion of Ni base self-fluxing alloy or Fe base self-fluxing alloy and they to mix mutually; The finishing of polishing in grown layer surfacing processing and grown layer side; Carry out flame-spraying on the grown layer surface, plasma spraying and laser beam plasma welding cermet or nonmetallic ceramics become oxide.
Wherein the formation and the material of the foundation of the laser repairing floor in turbine disk erosion district are the repair layers of being set up in an erosion district, generally be by the compound graded alloy layer that constitutes of soft bottom, transition zone and hardstanding or hardness suitable with turbine disk material uniform alloy-layer, the material that adopts is Ni base self-fluxing alloy powder or Co base self-fluxing alloy powder, cermet material or non-metal stupalith, or both powder of mixing mutually by a certain percentage; Or same turbine disk material, sprayed on material is a cermet material.The used copper loose tool of tenon tooth groove in the erosion district or blade positioning step wherein, the constant speed of β laser beam and speed change irradiation and focus and zoom irradiation and pulse and continuous irradiation.
The present invention's advantage: the matrix of the turbine disk is influenced by heat little, there is not distortion, the erosion district of the turbine disk not only can return to former design physical dimension, and the mechanical strength in this district can recover more than 85%, repairs the good turbine disk and uses and still can continue to repair after property again, so that repeatedly, this process is simple, handling ease, cost is low, is to solve the erosion of the cigarette machine turbine disk to repair.
The present invention's embodiment
Example 1 certain external import turbine disk in the cigarette machine second level, factory catalysis workshop (p860mm, heavy 350Kg) material is a Waspolloy Ni base superalloy, and all tenon tool air inlet positions the damage of serious gully occurs through moving about one every year by the exhaust gas dust erosion, and the bosom is 15mm.
Its laser repairing processing technology is as follows:
Remove descale and incrustation on the surface, clean with organic solvent, dress is inlayed the graphite loose tool and is executed deposited surface protectant, artificial pre-cloth powder bed, and powder is the Ni base self-fluxing powder of different hardness, mechanical indicator is located indication, Co
2Laser irradiation; power 800～2000W; sweep speed 2～10mm/ second; spot diameter 2.0～4.5mm washes along with gully irradiation, fills and leads up; successively pile the length of delivering a child then; form the hardness gradient layer, tooth reparation of a tooth, Ar gas shield; repair layer hardness from inside to outside; be from HRC38～HRC56, adopt pneumatic milling tools to repair the tenon tooth groove, mechanical then honing processing; its surface is aided with shot peening strengthening again; manufacturer installation safe operation a year and a half, also repair for the surplus 30% just pending second time after the laser repairing, do not have the piece of falling and peel off.
Example 2 certain petrochemical plant catalytic unit are introduced on the cigarette machine with homemade rotor two-stage turbine dish (diameter 850mm, high 65mm) material is a Waspolloy Ni based high-temperature alloy, through about 190 days continuous operation, serious erosion takes place between diameter 730mm and 790mm, the about 10nm of the degree of depth of erosion groove, wide 30mm, intensity herein reduces by 1/7～1/6, and serious threat turbine disk safety is normally moved.
This turbine disk laser repairing processing technology is as follows:
The erosion district is carried out machinery polishing such as worker, and organic solvent cleans, and dress is inlayed the Cu loose tool and executed deposited surface protectant; the turbine disk drives rotation by high-speed electric expreess locomotive and the X-Y workbench drives translation; the online powder of putting of automatic powder feeding device, dusty material bottom are the basic alloy of M ', and the intermediate layer is Co base and N
1Base mixed-powder, surface layer are Co base alloyed powder, CO
2Laser and Na-yAG laser is irradiation successively.
CO
2Laser power 800～2000W, sweep speed 2～10mm/ second, spot diameter 2.0～4.5mm.
Na-YAG laser 100W～500W, pulsewidth 0.8～12mSec, ripple frequency 1～20Hz, overlap joint 30～60%, Ar gas shield.
Adopt electronic polishing cutter finishing tenon tooth groove, mechanical then honing repair layer surface is aided with shot peening strengthening again.
Claims (3)
1. the laser repair method of an ablated worm gear disc of smoke exhauster in oil refinery is characterized in that at first ablated worm gear disc of smoke exhauster being carried out machinery polishing processing, removes the expression dirt, keeps former erosion state; Utilize the black or materials making tenon tooth Slot shaping loose tool tools such as Al or Cu of stone according to turbine disk shape; Utilize rotating disk and nonmetal heat insulation backing plate, but the workbench of X-Y direction motion, and He-Ne finishes mechanism pointer location; Give the reparation surface at the turbine disk and adopt automatically and non-automatic mode fore-put powder, use CO
2Continuous or the pulsed irradiation of laser and Nb-YAG laser beam, and permanent Jiao or varifocal irradiation, constant speed and speed change irradiation and original position conformal radiation mode, flexibility and inflexibility optical system, laser cladding, laser casting and laser are piled layer by layer and are connect, the bottom of multiple repair layer generating mode, after the transition, the consistent or incomparable inconsistent grown layer structure of surface layer, the grown layer material is that each self-fluxing alloy of Co becomes Ni base self-fluxing alloy or Fe base self-fluxing alloy and they to ask the material that mixes mutually by a certain percentage extremely mutually; The finishing of polishing in grown layer surfacing processing and grown layer side; Carry out flame-spraying on the grown layer surface, plasma spraying and laser beam plasma welding cermet or nonmetallic ceramics become oxide.
2. by the described laser repair method of claim 1, the formation and the material that it is characterized in that the laser repairing floor foundation in turbine disk erosion district are the repair layers of being set up in an erosion district, generally be by the compound graded alloy layer that constitutes of soft bottom, transition zone and hardstanding or hardness suitable with turbine disk material uniform alloy-layer, the material that adopts is Ni base self-fluxing alloy powder or Co base self-fluxing alloy powder, cermet material or non-metal stupalith, or both powder of mixing mutually by a certain percentage; Or same turbine disk material, sprayed on material is a cermet material.
3. by the described laser repair method of claim 1, it is characterized in that tenon tooth groove or the used copper loose tool of blade positioning step in erosion the district in, the constant speed of β laser beam and speed change irradiation with focus and zoom irradiation and pulse and continuous irradiation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97101560 CN1191788A (en) | 1997-02-25 | 1997-02-25 | Laser reparation method of ablated worm gear disc of smoke exhauster in oil refinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97101560 CN1191788A (en) | 1997-02-25 | 1997-02-25 | Laser reparation method of ablated worm gear disc of smoke exhauster in oil refinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1191788A true CN1191788A (en) | 1998-09-02 |
Family
ID=5165823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97101560 Pending CN1191788A (en) | 1997-02-25 | 1997-02-25 | Laser reparation method of ablated worm gear disc of smoke exhauster in oil refinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1191788A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423884C (en) * | 2005-12-26 | 2008-10-08 | 沈阳大陆激光技术有限公司 | Detecting tools for combustion turbine first order jet nozzle renovation technique and renovation technique thereof |
| CN100423883C (en) * | 2005-12-26 | 2008-10-08 | 沈阳大陆激光技术有限公司 | Renovation technique of combustion turbine first order jet nozzle |
| CN101551197B (en) * | 2009-05-14 | 2012-04-18 | 瓮福（集团）有限责任公司 | A pyrite-based sulphuric acid roaster cooling calandria repairing method |
| CN103898313A (en) * | 2014-04-10 | 2014-07-02 | 西安航空动力股份有限公司 | Laser impact reinforcing method of turbine disc tongue-and-groove structure |
| CN106555182A (en) * | 2015-09-24 | 2017-04-05 | 沈阳大陆激光技术有限公司 | A kind of restorative procedure of combustion engine turbine rotor wheel hub tongue-and-groove |
-
1997
- 1997-02-25 CN CN 97101560 patent/CN1191788A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100423884C (en) * | 2005-12-26 | 2008-10-08 | 沈阳大陆激光技术有限公司 | Detecting tools for combustion turbine first order jet nozzle renovation technique and renovation technique thereof |
| CN100423883C (en) * | 2005-12-26 | 2008-10-08 | 沈阳大陆激光技术有限公司 | Renovation technique of combustion turbine first order jet nozzle |
| CN101551197B (en) * | 2009-05-14 | 2012-04-18 | 瓮福（集团）有限责任公司 | A pyrite-based sulphuric acid roaster cooling calandria repairing method |
| CN103898313A (en) * | 2014-04-10 | 2014-07-02 | 西安航空动力股份有限公司 | Laser impact reinforcing method of turbine disc tongue-and-groove structure |
| CN103898313B (en) * | 2014-04-10 | 2016-01-13 | 西安航空动力股份有限公司 | A kind of laser shock peening method of turbine disc mortise structure |
| CN106555182A (en) * | 2015-09-24 | 2017-04-05 | 沈阳大陆激光技术有限公司 | A kind of restorative procedure of combustion engine turbine rotor wheel hub tongue-and-groove |
| CN106555182B (en) * | 2015-09-24 | 2018-08-07 | 沈阳大陆激光技术有限公司 | A kind of restorative procedure of combustion engine turbine rotor wheel hub tongue-and-groove |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |