CN103801834A - Laser repair-welding method for case and guider of small aero-engine - Google Patents
Laser repair-welding method for case and guider of small aero-engine Download PDFInfo
- Publication number
- CN103801834A CN103801834A CN201210450450.1A CN201210450450A CN103801834A CN 103801834 A CN103801834 A CN 103801834A CN 201210450450 A CN201210450450 A CN 201210450450A CN 103801834 A CN103801834 A CN 103801834A
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- China
- Prior art keywords
- welding
- repair
- laser
- guider
- repair welding
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/34—Laser welding for purposes other than joining
- B23K26/342—Build-up welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0277—Rods, electrodes, wires of non-circular cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
Abstract
The invention belongs to a laser welding technique, and relates to a laser repair-welding method for a case and a guider of a small aero-engine. By the adoption of YAG (Yttrium Aluminum Garnet) pulse laser repair-welding, the heat affected zone and the deformation are small; surface defects discovered after precision machining can be repair-welded; as flat welding wires are used for repair-welding, welding lines are good in complete penetration; the longer flat welding wires can be preliminarily arranged to more devious repair-welding parts; the protection of blowing argon by using a metal pipe is motor-driven and flexible; the longer metal pipe can protect the more devious repair-welding parts. According to the technological parameters of laser repair-welding of lot production provided by the invention, when a 200mm focal distance is adopted, the YAG pulse laser repair-welding of a facula phi 10mm on the surface of a focus lens can repair-weld the surface defects inside a 10mm-wide 150mm-deep inner cavity.
Description
Technical field
The invention belongs to laser welding technology, relate to a kind of laser welding method for small aero casing and guider.
Background technology
The conventional method of casing and guider defect repair welding is argon arc welding, and casing and the guider of new small aero, due to complex structure, cause argon arc welding repair welding accessibility poor, and material weldability is poor, causes repair welding crackle tendency large.The conventional method of laser welding, for automatically sending alloy powder to carry out continuous laser repair welding, exists repair welding accessibility poor equally, and crackle tendency is large.The preset alloy powder having carries out pulse laser repair welding, and weld seam oxidation is serious, and crackle tendency is large.The shortcoming of prior art is:
1) the repair welding head of the welding gun of argon arc welding and continuous laser repair welding can not reach narrow space repair welding, and heat input is large, easily causes part deformation, in the time that distortion is tied, easily causes part crack.
2) powder process difficulty, H, O, the N content of alloy powder are high, and plastic property of weld bead is poor, easily crackle.
3) preset alloy powder carries out pulse laser repair welding, can not protect by blowing argon gas, and weld seam is further oxidized, and plasticity is poor, easily crackle.
Summary of the invention
The object of the invention is:
A kind of batch of production cost proposed low, the small aero casing that weldquality is good and the laser welding method of guider.
Technical scheme of the present invention is:
A laser welding method for small aero casing and guider, this method comprises the following steps:
The first step, circular welding wire, sheet material etc. are processed into flat welding wire;
Second step, to repair welding part defect bevelling, cleaning part treats that the surface within the scope of repair welding position and periphery 1mm thereof sees metallic luster;
The 3rd step, is placed on the part after cleaning in drying box and dries;
The 4th step, the part after drying is clamped in fixture, or simple support is on numerical control table, NC table;
The 5th step, is preset at welding wire one end to treat repair welding place;
The 6th step, stretches to the outlet side of metal tube to treat near repair welding place or push down welding wire, blowing argon gas protection molten bath;
The 7th step, first excitation laser pulse, filler wire, completes the repair welding of a point, the distance of mobile 0.3mm-0.5mm again, excitation laser pulse, filler wire, completes the repair welding of another point, by forming straight line, by rectilinear(-al) plane, become volume by set of planes, until whole defect repair welding is good;
The technological parameter of laser welding: pulse width 15ms, pulse frequency 3Hz, pulse energy 30J ± 1.5J, focal length 200mm, defocusing amount+11mm ± 2mm, repair welding speed 60mm/min, track pitch 0.8mm, width (1.15～1.2) mm of welding wire and thickness (0.35～0.40) mm, argon flow amount 5L/min;
The 8th step, cleans out the splash that piece surface adheres to concordant with matrix, leaves no trace;
The 9th step, by part technical conditions, eliminates welding stress, carries out visual, fluorescence, X ray and leak check.
Width 1.15mm～the 1.2mm of flat welding wire and thickness 0.35mm～0.40mm in the described first step.
Described second step, the bevel for welding that repair welding part defect is opened is 45 °, when metallic luster is seen on the surface of cleaning part within the scope of repair welding position and periphery 1mm thereof, monolateral removal thickness≤0.02mm.
The 3rd described step, 220 ℃ ± 10 ℃ of bake out temperatures, drying time 20min～240min.
The 4th described step also comprises: with the non-repair welding position of clean cloth protection part, avoid splash and pollute.
The 5th described step, welding wire length is 150mm～250mm.
The 6th described step, metal tube length is 150mm～250mm.
The advantage that the present invention has and beneficial effect:
Adopt the repair welding of YAG pulse laser, heat affected area and distortion are all very little, the blemish of finding after energy repair welding fine finishining; With flat welding wire repair welding, the through welding of weld seam is good, and long flat welding wire, can be preset to remoter repair welding position; With the protection of metal tube blowing argon gas, maneuverability, longer metal tube, can protect remoter repair welding position.According to series-produced laser welding technological parameter of the present invention, when adopting 200mm focal length, the YAG pulse laser repair welding of focus lamp minute surface hot spot Φ 10mm, the blemish in the dark inner chamber of the energy wide 150mm of repair welding 10mm.
The specific embodiment
A laser welding method for small aero casing and guider, the present invention includes following steps:
The first step, circular welding wire, sheet material etc. are processed into flat welding wire, width (1.15～1.2) mm of welding wire and thickness (0.35～0.40) mm;
Second step, opens 45 ° of bevel for weldings to repair welding part defect, and cleaning part treats that the surface within the scope of repair welding position and periphery 1mm thereof sees metallic luster, monolateral removal thickness≤0.02mm;
The 3rd step, is placed on the part after cleaning in drying box and dries, 220 ℃ ± 10 ℃ of bake out temperatures, drying time 20min～240min;
The 4th step, is clamped in the part after drying in fixture, or simple support is on numerical control table, NC table, with the non-repair welding position of clean cloth protection part, avoids splash and pollutes;
The 5th step, is preset at the long welding wire one end of 150mm～250mm to treat repair welding place;
The 6th step, stretches to the outlet side of metal tube long 150mm～250mm to treat near repair welding place or push down welding wire, blowing argon gas protection molten bath;
The 7th step, first excitation laser pulse, filler wire, completes the repair welding of a point, the distance of mobile 0.3mm-0.5mm again, excitation laser pulse, filler wire, completes the repair welding of another point, by forming straight line, by rectilinear(-al) plane, become volume by set of planes, until whole defect repair welding is good;
The technological parameter of laser welding: pulse width 15ms, pulse frequency 3Hz, pulse energy 30J ± 1.5J, focal length 200mm, defocusing amount+11mm ± 2mm, repair welding speed 60mm/min, track pitch 0.8mm, width (1.15～1.2) mm of welding wire and thickness (0.35～0.40) mm, argon flow amount 5L/min;
The 8th step, cleans out the splash that piece surface adheres to concordant with matrix, leaves no trace;
The 9th step, by part technical conditions, eliminates welding stress, carries out visual, fluorescence, X ray and leak check.
Embodiment 1
FWZ9 engine support case, material is foundry goods K423A, structure is uniform 6 hollow support plates in the middle of inner and outer ring, outside diameter of inner ring Φ 175mm～Φ 210mm, bore diameter of outer ring Φ 225mm～Φ 280mm, high 180mm.First carry out argon arc welding repair welding, argon arc welding repair welding less than defect, when repair welding, the defect of easy crackle, leaves laser welding for.
One, laser welding equipment
The HGL-LWY400E type YAG pulsed laser cladding equipment (manufacturer: Huagong Laser Engineering Co Ltd, Wuhan) of customization, focus lamp minute surface hot spot is Φ 10mm.
Two, repair welding material
HGH3113 welding wire GJB2612, has two kinds of methods of processing welding wires:
1. for Φ 1.2mm welding wire, first two sides is slightly polished thick to 0.45mm～0.55mm, and rear two sides is carefully polished thick to 0.35mm～0.40mm, welding wire length 250mm;
2. for Φ 0.8mm welding wire, be first cold-rolled to 0.43mm～0.45mm thick, rear two sides is carefully polished thick to 0.35mm～0.40mm, welding wire length 250mm.
Three, laser welding track
For the little defect of≤Φ 10mm, always first repair welding minimum point, avoids weld seam to put up a bridge; For the large defect of Φ 10mm～Φ 20mm, adopt the straight path that is parallel to reference axis, operation most convenient, repair welding speed is fast.
Four, laser welding fixture
Design specialized fixture difficulty is large, adopts wooden case to carry out simple support.
Five, argon shield
With the copper tube of the long 250mm of external diameter Φ 6mm internal diameter Φ 4mm, argon gas is transported to and treats repair welding position.
Embodiment 2
FWZ10 engine power turbine one stage diverter, material is foundry goods K477, structure is uniform 72 blades in the middle of inner and outer ring, outside diameter of inner ring Φ 160mm～Φ 220mm, bore diameter of outer ring Φ 205mm～Φ 280mm, high 75mm.First carry out argon arc welding repair welding, argon arc welding repair welding less than defect, when repair welding, the defect of easy crackle, leaves laser welding for.
One, laser welding equipment
The HGL-LWY400E type YAG pulsed laser cladding equipment (manufacturer: Huagong Laser Engineering Co Ltd, Wuhan) of customization, focus lamp minute surface hot spot is Φ 10mm.
Two, repair welding material
HGH3113 welding wire-GJB2612, has two kinds of methods of processing welding wires:
1. for Φ 1.2mm welding wire, first two sides is slightly polished thick to 0.45mm～0.55mm, and rear two sides is carefully polished thick to 0.35mm～0.40mm, welding wire length 150mm;
2. for Φ 0.8mm welding wire, be first cold-rolled to 0.43mm～0.45mm thick, rear two sides is carefully polished thick to 0.35mm～0.40mm, welding wire length 150mm.
Three, laser welding track
For the little defect of≤Φ 10mm, always first repair welding minimum point, avoids weld seam to put up a bridge; For the large defect of Φ 10mm～Φ 20mm, adopt the straight path that is parallel to reference axis, operation most convenient, repair welding speed is fast.
Four, laser welding fixture
Designed special fixture, power turbine one stage diverter is clamped in special fixture, fixture can 360 ° of upsets, and part can 360 ° of rotations.
Five, argon shield
With the copper tube of the long 150mm of external diameter Φ 6mm internal diameter Φ 4mm, argon gas is transported to and treats repair welding position.
Claims (7)
1. a laser welding method for small aero casing and guider, this method comprises the following steps:
The first step, circular welding wire, sheet material etc. are processed into flat welding wire;
Second step, to repair welding part defect bevelling, cleaning part treats that the surface within the scope of repair welding position and periphery 1mm thereof sees metallic luster;
The 3rd step, is placed on the part after cleaning in drying box and dries;
The 4th step, the part after drying is clamped in fixture, or simple support is on numerical control table, NC table;
The 5th step, is preset at welding wire one end to treat repair welding place;
The 6th step, stretches to the outlet side of metal tube to treat near repair welding place or push down welding wire, blowing argon gas protection molten bath;
The 7th step, first excitation laser pulse, filler wire, completes the repair welding of a point, the distance of mobile 0.3mm-0.5mm again, excitation laser pulse, filler wire, completes the repair welding of another point, by forming straight line, by rectilinear(-al) plane, become volume by set of planes, until whole defect repair welding is good;
The technological parameter of laser welding: pulse width 15ms, pulse frequency 3Hz, pulse energy 30J ± 1.5J, focal length 200mm, defocusing amount+11mm ± 2mm, repair welding speed 60mm/min, track pitch 0.8mm, width (1.15～1.2) mm of welding wire and thickness (0.35～0.40) mm, argon flow amount 5L/min;
The 8th step, cleans out the splash that piece surface adheres to concordant with matrix, leaves no trace;
The 9th step, by part technical conditions, eliminates welding stress, carries out visual, fluorescence, X ray and leak check.
2. the laser welding method of a kind of small aero casing as claimed in claim 1 and guider, is characterized in that, the width 1.15mm～1.2mm of flat welding wire and thickness 0.35mm～0.40mm in the described first step.
3. the laser welding method of a kind of small aero casing as claimed in claim 2 and guider, it is characterized in that, described second step, the bevel for welding that repair welding part defect is opened is 45 °, when metallic luster is seen on the surface of cleaning part within the scope of repair welding position and periphery 1mm thereof, monolateral removal thickness≤0.02mm.
4. the laser welding method of a kind of small aero casing as claimed in claim 3 and guider, is characterized in that, the 3rd described step, 220 ℃ ± 10 ℃ of bake out temperatures, drying time 20min～240min.
5. the laser welding method of a kind of small aero casing as claimed in claim 4 and guider, is characterized in that, the 4th described step also comprises: with the non-repair welding position of clean cloth protection part, avoid splash and pollute.
6. the laser welding method of a kind of small aero casing as claimed in claim 5 and guider, is characterized in that, the 5th described step, and welding wire length is 150mm～250mm.
7. a kind of small aero casing as described in one of claim 1-6 and the laser welding method of guider, is characterized in that, the 6th described step, and metal tube length is 150mm～250mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210450450.1A CN103801834A (en) | 2012-11-12 | 2012-11-12 | Laser repair-welding method for case and guider of small aero-engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210450450.1A CN103801834A (en) | 2012-11-12 | 2012-11-12 | Laser repair-welding method for case and guider of small aero-engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103801834A true CN103801834A (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210450450.1A Pending CN103801834A (en) | 2012-11-12 | 2012-11-12 | Laser repair-welding method for case and guider of small aero-engine |
Country Status (1)
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| CN (1) | CN103801834A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015420A (en) * | 2017-12-01 | 2018-05-11 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of method for laser welding of casing small space |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2386381A1 (en) * | 1977-04-07 | 1978-11-03 | United Technologies Corp | PRECISION LASER HOLE DRILLING PROCESS |
| SU1648694A1 (en) * | 1988-09-12 | 1991-05-15 | Предприятие П/Я В-2190 | Method for welding small-section parts to heavy parts |
| JPH04220185A (en) * | 1990-12-19 | 1992-08-11 | Mitsubishi Heavy Ind Ltd | Laser beam repair welding method for heat exchanger tube |
| CN1220932A (en) * | 1998-12-14 | 1999-06-30 | 北京有色金属研究总院 | Method for preparation of quick setting flat alloy welding wire |
| CN101704165A (en) * | 2009-11-18 | 2010-05-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Laser welding repair method for machining liner of nickle-base wrought superalloy annular machine |
| CN101722366A (en) * | 2010-01-25 | 2010-06-09 | 长春理工大学 | Laser welding method for inner gear ring and annular baffle |
-
2012
- 2012-11-12 CN CN201210450450.1A patent/CN103801834A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2386381A1 (en) * | 1977-04-07 | 1978-11-03 | United Technologies Corp | PRECISION LASER HOLE DRILLING PROCESS |
| SU1648694A1 (en) * | 1988-09-12 | 1991-05-15 | Предприятие П/Я В-2190 | Method for welding small-section parts to heavy parts |
| JPH04220185A (en) * | 1990-12-19 | 1992-08-11 | Mitsubishi Heavy Ind Ltd | Laser beam repair welding method for heat exchanger tube |
| CN1220932A (en) * | 1998-12-14 | 1999-06-30 | 北京有色金属研究总院 | Method for preparation of quick setting flat alloy welding wire |
| CN101704165A (en) * | 2009-11-18 | 2010-05-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Laser welding repair method for machining liner of nickle-base wrought superalloy annular machine |
| CN101722366A (en) * | 2010-01-25 | 2010-06-09 | 长春理工大学 | Laser welding method for inner gear ring and annular baffle |
Non-Patent Citations (1)
| Title |
|---|
| 黄庆丰，张建中，姜卫东等: "自制焊丝与商品焊丝对激光焊件机械性能的影响", 《上海口腔医学》, vol. 15, no. 4, 9 October 2006 (2006-10-09), pages 427 - 430 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015420A (en) * | 2017-12-01 | 2018-05-11 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of method for laser welding of casing small space |
| CN108015420B (en) * | 2017-12-01 | 2020-03-31 | 中国航发沈阳黎明航空发动机有限责任公司 | Laser welding method for narrow space of cartridge receiver |
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Application publication date: 20140521 |