CN1056549C - Technological process of laser repairing damage area in high-temperature and high-speed wheel disc - Google Patents
Technological process of laser repairing damage area in high-temperature and high-speed wheel disc Download PDFInfo
- Publication number
- CN1056549C CN1056549C CN97111021A CN97111021A CN1056549C CN 1056549 C CN1056549 C CN 1056549C CN 97111021 A CN97111021 A CN 97111021A CN 97111021 A CN97111021 A CN 97111021A CN 1056549 C CN1056549 C CN 1056549C
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- China
- Prior art keywords
- wheel disc
- powder
- laser
- laser irradiation
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 title claims description 18
- 230000006378 damage Effects 0.000 title claims description 16
- 239000000843 powder Substances 0.000 claims abstract description 19
- 230000003628 erosive effect Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 230000008439 repair process Effects 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 4
- 230000007547 defect Effects 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 230000005284 excitation Effects 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000004372 laser cladding Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 235000019504 cigarettes Nutrition 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000004523 catalytic cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004307 sodium orthophenyl phenol Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 229910001247 waspaloy Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
- Laser Beam Processing (AREA)
Abstract
The technological method is used for restoring lasers of wheel discs which bear particle erosion, mechanical wear or hot corrosion in rotation at high speed. The technological method is characterized in that a focusing laser beam with high energy is utilized to fuse special metal powder into the erosion area of a wheel disc to form a gradient clad, so the geometric size of the wheel disc in the original design is restored with higher erosion resistance than that of materials of the wheel disc. The present invention has the advantages that the strength in wheel discs is not lowered, and the restored gradient clad has certain carrying capacity at the same time. The present invention also has the advantages of simplicity and convenient implementation. The present invention is an ideal technological method for restoring wheel discs.
Description
The present invention relates to a kind of high-temperature and high-speed wheel disc technological process of laser repairing damage area, be applicable to that mainly import or homemade cigarette machine I and II wheel disc suffer the impact injury of catalyst particle, the heat erosion damage of gas turbine wheel disk and steam turbine turbine disk cavitation damage etc. also are applicable to the reparation of all high temperature alloy wheel discs that are operated under other state.
Military service is at high temperature and high speed and wheel disc under the environmental attack situation is arranged, tend to take place the damage of surface local zone, such as the flue-gas expander in oil plant, the catalytic cracking unit energy-recovering machine group (being called for short a cigarette machine) secondary wheel disc, operating temperature is about 720 ℃, rotating speed is 6363 rev/mins, be subjected to the impact of high speed catalyst granules, the dark erosion damage district of 10-12mm takes place at wheel disc tenon tooth place, thereby reduced the intensity of wheel disc, because this wheel disc is the WaspaloyNi base superalloy, common melting welding is repaired and is subject to fire damage, produces fire check.Concentrate for dynamic balancing and elimination erosion ditch wedge angle stress, all adopt turning processing to remove gulley at present.Calculation of finite element strength, wheel disc are through a turning 10mm, and the life-span dropped to 16700 hours by 100000 hours, if once more the turning 10mm life-span will reduce to 1300 hours, wheel disc is in the state of scrapping substantially.Yet high-temperature and high-speed wheel disc like this and so on all is very expensive, makes also very difficultly, is the key issue of using and keeping in repair of restriction cigarette machine always.
For being subjected to work condition environment to corrode institute, the high-temperature and high-speed wheel disc that solves cigarette wheel dish and so on causes the geometry reparation of regional area damage and such industrial requirement of overhaul phase of prolongation wheel disc, the process that purpose of the present invention provides a kind of laser repairing to rebuild the high-temperature and high-speed wheel disc damage zone, the geometry of utilizing this process can recover the wheel disc damage zone also improves the anti-environment of damage zone erosion performance more simultaneously.
The present invention's process is achieved in that the present invention's process key step is to utilize the bombardment with laser beams can accurately modulate high-energy-density apace Co base or Ni base self-fluxing alloy or their mixed powder to be fused on the wheel disc damage zone matrix layer by layer, make it to realize each other the excellent metallurgical combination and form hardness distribution gradient layer, concrete steps are as follows:
1) laser irradiation parameter is:
Laser irradiation density 〉=10w/cm
Laser irradiation speed is second 2.0mm/ second-15mm/
2) laser emission mode: the laser beam focus form is garden shape or rectangle; The collimated excitation beam scan mode is linear scanning, rotation sweep or both is compound; Successively put powder irradiation, layer by layer growth;
3) metal powder material: Ni base self-fluxing powder, the composite powder that Co powder self-fluxing alloy or both mix in proportion;
4) powder preset mode: the plane is put deposited, feeds automatically or both compound, adopts mold copper or graphite or other high-temperature ceramic materials to assist presetting of powder and control the laser cladding moulding of wheel disc erosion district;
5) the reconstruction technical process is applied in the laser in-situ casting:
(1) repairs preparation
(2) implement by above-mentioned 1-4 process
(3) shape reparation
(4) defect repair
(5) machine glazed finish
(6) spraying hardened layer
(7) rotor dynamic balancing.
This process also comprises: need repair preparation in this laser irradiation first being processed, promptly carry out the Non-Destructive Testing and the intensity of common wheel disc and calculate, with the value of distinguishing whether this wheel disc uses in addition and repair; With suitable machined finishing and cleaning surfaces processing being carried out in surface, wheel disc erosion district to also needing.This process also is included in layer quality rebuild in this laser irradiation processing afterwards to laser repairing detection and repairing.
Detect qualified after, adopt large-scale Vertical Mill lathe and hand sand instrument that laser repairing is rebuild layer mill again and repair wheel disc by the geometric shape before dashing, carry out X-ray more thereupon, fluorescence and painted control triage are surveyed, and adopt CO2 laser and YAG laser to repair to detecting open defect, at last, the laser repairing reconstructed surface is polished with the cloth wheel comprehensively.If necessary can be at this surperficial spraying plating erosion resistance coating such as WC, SiC can further improve wheel disc anti-impact erosion ability.Need carry out common rotor dynamic balancing adjustment after the wheel disc assembling after laser repairing is rebuild.After the action of above-mentioned series of steps, whole disk rotors reparation is cleaned one newly, just can put into operation again.For the damage again in the reconstruction district of wheel disc, this process can be reused once more.
The present invention's advantage: restorative procedure is simple, operation easily, the wheel disc matrix is not subjected to big heat effect, indeformable, intensity improves behind the wheel disc reconstruction, has anti-bad environmental attack performance, wheel disc can be repaired repeatedly, repeatedly using, is the effective ways that high-temperature and high-speed wheel disc is repaired, and has very big economic worth.
The present invention's embodiment:
Embodiment 1
1,200,000 tons of/year catalysis of oil plant are split in the catalytic cracking unit energy-recovering machine group, the standby diameter ψ 800 of E-232 type cigarette wheel of U.S.'s import, material Waspaloy, operate in wheel disc tenon tooth zone through one section the dark groove mark that washes away for 10-12mm has taken place, adopt to repair and prepare laser irradiation, the shape mill is repaiied, defect repair, the reconstruction technical process is applied in a whole set of such laser in-situ casting of polishing and rotor dynamic balancing, and this wheel disc has been carried out reconstruction.
Machined parameters is applied in the laser in-situ casting:
Power density 10W/cm
Sweep speed 2.0-3.5mm/ second
Straight line and the scanning of rotation complex light, powder is put in the constituency, and constituency irradiation is successively put powder, and successively irradiation is fed powder automatically, and Cu matter mold, dusty material are Co base and Ni base mixed-powder, reconstruction layer maximum height 15mm is applied in the laser casting.Facts have proved that certain oil plant cigarette machine secondary wheel disc running after first laser repairing rebuild 569 days produces a desired effect fully.
Claims (1)
1. one kind is adopted the casting of laser irradiation original position to apply the process that reconstruction high temperature and high speed rotation roulette is subjected to the damage zone of work condition environment erosion, it is characterized in that this process is by laser irradiation parameter and mode, preset metal powder material and pre-setting method and technical process composition etc., it thes contents are as follows:
1) laser irradiation parameter is:
Laser irradiation density 〉=10
4W/cm
2
Laser irradiation speed is second 2.0mm/ second～15mm/
2) laser irradiation mode: the laser beam focus form is garden shape or rectangle; The collimated excitation beam scan mode is linear scanning, rotation sweep or both is compound; Successively put powder irradiation, layer by layer growth.
3) metal powder material: Ni base self-fluxing powder, Co base self-fluxing powder or the composite powder that both mix in proportion.
4) powder pre-setting method: the plane is put deposited, feeds automatically or both compound, adopts mold copper or graphite or other high-temperature ceramic materials to assist presetting of powder and control the laser cladding moulding of wheel disc erosion district.
5) the reconstruction technical process is applied in the laser in-situ casting:
(1) repairs preparation
(2) implement by above-mentioned 1～4 process
(3) shape reparation
(4) defect repair
(5) machine glazed finish
(6) spraying hardened layer
(7) rotor dynamic balancing
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97111021A CN1056549C (en) | 1997-05-17 | 1997-05-17 | Technological process of laser repairing damage area in high-temperature and high-speed wheel disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97111021A CN1056549C (en) | 1997-05-17 | 1997-05-17 | Technological process of laser repairing damage area in high-temperature and high-speed wheel disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1199663A CN1199663A (en) | 1998-11-25 |
| CN1056549C true CN1056549C (en) | 2000-09-20 |
Family
ID=5171603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97111021A Expired - Fee Related CN1056549C (en) | 1997-05-17 | 1997-05-17 | Technological process of laser repairing damage area in high-temperature and high-speed wheel disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1056549C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298880C (en) * | 2004-06-30 | 2007-02-07 | 中国科学院金属研究所 | Magnesium alloy laser surface reinforced repairing method |
| CN100431773C (en) * | 2005-11-17 | 2008-11-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Laser melting rehabilitation method for titanium alloy thin-wall case |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100463766C (en) * | 2005-06-30 | 2009-02-25 | 沈阳大陆激光技术有限公司 | Screw rotor repairing process |
| 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 |
| 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 |
| CN100400219C (en) * | 2006-01-11 | 2008-07-09 | 桂林航天工业高等专科学校 | Build-up welding repair process of disc shear blade and repaired disc shear blade thereby |
| CN113718247B (en) * | 2021-09-09 | 2024-02-02 | 中国人民解放军陆军装甲兵学院 | Plasma cladding repair method for copper alloy damaged part |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0176942A1 (en) * | 1984-10-01 | 1986-04-09 | General Electric Company | Method for repairing metal in an article |
| EP0504095A2 (en) * | 1991-03-13 | 1992-09-16 | United Technologies Corporation | Gas turbine engine component repair |
-
1997
- 1997-05-17 CN CN97111021A patent/CN1056549C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0176942A1 (en) * | 1984-10-01 | 1986-04-09 | General Electric Company | Method for repairing metal in an article |
| EP0504095A2 (en) * | 1991-03-13 | 1992-09-16 | United Technologies Corporation | Gas turbine engine component repair |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298880C (en) * | 2004-06-30 | 2007-02-07 | 中国科学院金属研究所 | Magnesium alloy laser surface reinforced repairing method |
| CN100431773C (en) * | 2005-11-17 | 2008-11-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Laser melting rehabilitation method for titanium alloy thin-wall case |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1199663A (en) | 1998-11-25 |
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