CN106624364A - Special-shape structure laser welding method - Google Patents

Special-shape structure laser welding method Download PDF

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Publication number
CN106624364A
CN106624364A CN201611113230.4A CN201611113230A CN106624364A CN 106624364 A CN106624364 A CN 106624364A CN 201611113230 A CN201611113230 A CN 201611113230A CN 106624364 A CN106624364 A CN 106624364A
Authority
CN
China
Prior art keywords
welding
laser
abnormally
structured
laser welding
Prior art date
Application number
CN201611113230.4A
Other languages
Chinese (zh)
Inventor
夏冬林
胡广祥
Original Assignee
上海君屹工业自动化股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 上海君屹工业自动化股份有限公司 filed Critical 上海君屹工业自动化股份有限公司
Priority to CN201611113230.4A priority Critical patent/CN106624364A/en
Publication of CN106624364A publication Critical patent/CN106624364A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/04Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
    • B23K26/044Seam tracking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08Devices involving relative movement between laser beam and workpiece
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34Laser welding for purposes other than joining
    • B23K26/342Build-up welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/346Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
    • B23K26/348Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding

Abstract

The invention relates to a special-shape structure laser welding method. The special-shape structure laser welding method includes the steps of activating and debugging laser welding and related devices; debugging laser focal length, welding wire angle and protective gas blowing direction; programming laser brazing and using a robot demonstrator for demonstrating tracks; setting protective gas flow rate, laser power, wire feeding speed and external shaft rotating speed parameters; conducting pre-welding cleaning; setting welding speed, turning on a robot for automatic operation and starting to weld; detecting weld joint forming, setting offset based on original weld joints and offsetting in terms of welding wire position, welding wire angle, protective gas blowing direction and laser direction according to curved surface shapes; detecting and setting circularly according to the above steps and welding subsequent superposed weld joints. The special-shape structure laser welding method is capable of changing sizes and corrosion resistance of complicated curve workpieces by subjecting the surfaces of the workpieces to filling wire surfacing and can be used for welding large thick parts with low power.

Description

A kind of abnormally-structured method for laser welding

Technical field

The invention belongs to laser welding technology field, more particularly to a kind of abnormally-structured method for laser welding.

Background technology

Laser filling wire welding is referred to be inserted in advance after specific weld material with laser irradiation fusing or in laser in weld seam Method of the welding material to form welding point is inserted while irradiation.Referring to usually said laser filling wire welding high-power more Or the laser filling wire welding of super high power, this kind of welding studied mainly for larger or thicker simple parts.For The filler wire welding research of various Complex Different Shape structures is less.

The content of the invention

The technical problem to be solved is to provide a kind of abnormally-structured method for laser welding, by complex curve The surface of workpiece carries out filling silk built-up welding to change workpiece size itself and corrosion resistance.

The technical solution adopted for the present invention to solve the technical problems is:A kind of abnormally-structured method for laser welding is provided, Including following step:

A laser welding and its relevant device are opened and debugged to ();

B () debugging laser focal, welding wire angle and protective gas are blowed to;

C () works out laser soldering program, using robot demonstrator teaching track;

D () arranges shield gas flow rate, laser power, wire feed rate, outside rotating speed parameter;

E () carries out preweld cleaning;

F () arranges speed of welding, robot opens automatic running, starts welding;

G () detects appearance of weld, on the basis of former weld seam, arrange side-play amount, according to curve form, from welding wire position, weldering Silk angle, shielding gas are blowed to, laser position aspect skew;

H () measures interlayer temperature, take temperature control measure;

I () is arranged according to step (e) to step (h) circular test, the follow-up superposition weld seam of welding.

The further technical characteristic of the present invention is, in the step (a), the laser welding and its relevant device are laser Device, cooling-water machine, MAG/MIG welding machines and outside axle turntable.

The further technical characteristic of the present invention is, in the step (b), the protective gas is Ar.

The further technical characteristic of the present invention is that in the step (b), the laser focal is set to 15-18mm, institute State welding wire angle and be set to 40-50 degree, the protective gas arrange air blowing angle be set to 60-90 degree, distance be less than or equal to 15mm。

The further technical characteristic of the present invention is that in the step (d), the shield gas flow rate is set to 25L/ Min, the laser power is set to 4000W, and the wire feed rate is set to 2-3m/min, and the outside rotating speed is set to 40-48s/ is all.

The further technical characteristic of the present invention is that in the step (e), preweld cleaning is with alcohol wipe material to be welded Material.

The further technical characteristic of the present invention is that in the step (f), the speed of welding is set to 18-22mm/s, And welded lap is 1/2 weld width.

The further technical characteristic of the present invention is that in the step (f), welding process is kept away in accordance with by concave to convex technique Exempt from weld seam molten bath to trickle downwards, be molded poor.

The further technical characteristic of the present invention is, in the step (g), the weld shape is dimpling, form factor For 0.8-1.2.

The further technical characteristic of the present invention is, in the step (h), the interlayer temperature control is being less than or equal to In the range of 150 degree.

Beneficial effect

Advantages of the present invention has:

1st, can carry out filling silk built-up welding to change workpiece size itself and corrosion-resistant energy by the surface to complex curve workpiece Power;

2nd, solve the problems, such as strict to work pieces process matching requirements;

3rd, it is capable of achieving smaller power and welds thicker larger part;

4th, by adjusting the composition that fills silk, can control welded seam area structure property.

Specific embodiment

With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention Rather than restriction the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited Scope.

Embodiment 1

With used mother metal as 304 stainless steels, filler wire model ER316L, choosing is high to increase corrosion resistance with wlding As a example by, abnormally-structured method for laser welding step is as follows:

1st, open and debugged laser instrument, cooling-water machine, MAG/MIG welding machines and outside axle turntable;

2nd, debug laser focal, welding wire angle and protective gas to blow to:Laser focal is set to 15-18mm, the welding wire Angle is set to 40-50 degree, the protective gas arrange air blowing angle be set to 60-90 degree, distance be less than or equal to 15mm, and Protective gas is Ar;

3rd, laser soldering program is worked out, using robot demonstrator teaching track;

4th, arrange shield gas flow rate be 25L/min, laser power be 4000W, wire feed rate be 2-3m/min, outside axle Rotating speed is that 40-48s/ is all.;

5th, carry out welding front alcohol wipe material to be welded;

6th, it is 18-22mm/s to arrange speed of welding, and welded lap is 1/2 weld width, and robot opens automatic running, Start welding, welding process is in accordance with by concave to convex technique, it is to avoid weld seam molten bath is trickled downwards, be molded poor;

7th, appearance of weld is detected, the weld shape is dimpling, form factor is 0.8-1.2, on the basis of former weld seam, if Side-play amount is put, according to curve form, blowed to from welding wire position, welding wire angle, shielding gas, offset in terms of laser position;

8th, interlayer temperature is measured, takes temperature control measure, interlayer temperature control is in the range of less than or equal to 150 degree;

9th, arrange according to step (5) to step (8) circular test, the follow-up superposition weld seam of welding.

Claims (10)

1. a kind of abnormally-structured method for laser welding, it is characterised in that:Comprise the steps:
A laser welding and its relevant device are opened and debugged to ();
B () debugging laser focal, welding wire angle and protective gas are blowed to;
C () works out laser soldering program, using robot demonstrator teaching track;
D () arranges shield gas flow rate, laser power, wire feed rate, outside rotating speed parameter;
E () carries out preweld cleaning;
F () arranges speed of welding, robot opens automatic running, starts welding;
G () detects appearance of weld, on the basis of former weld seam, side-play amount is arranged, according to curve form, from welding wire position, welding wire angle Degree, shielding gas are blowed to, laser position aspect skew;
H () measures interlayer temperature, take temperature control measure;
I () is arranged according to step (e) to step (h) circular test, the follow-up superposition weld seam of welding.
2. a kind of abnormally-structured method for laser welding according to claim 1, it is characterised in that:In the step (a), institute It is laser instrument, cooling-water machine, MAG/MIG welding machines and outside axle turntable to state laser welding and its relevant device.
3. a kind of abnormally-structured method for laser welding according to claim 1, it is characterised in that:In the step (b), institute Protective gas is stated for Ar.
4. a kind of abnormally-structured method for laser welding according to claim 1, it is characterised in that:In the step (b), institute State laser focal and be set to 15-18mm, the welding wire angle is set to 40-50 degree, and the protective gas arranges air blowing angle and sets It is less than or equal to 15mm to be set to 60-90 degree, distance.
5. a kind of abnormally-structured method for laser welding according to claim 1, it is characterised in that:In the step (d), institute State shield gas flow rate and be set to 25L/min, the laser power is set to 4000W, and the wire feed rate is set to 2-3m/ Min, it is all that the outside rotating speed is set to 40-48s/.
6. a kind of abnormally-structured method for laser welding according to claim 1, it is characterised in that:In the step (e), weldering Front cleaning is with alcohol wipe material to be welded.
7. a kind of abnormally-structured method for laser welding according to claim 1, it is characterised in that:In the step (f), institute State speed of welding and be set to 18-22mm/s, and welded lap is 1/2 weld width.
8. a kind of abnormally-structured method for laser welding according to claim 1, it is characterised in that:In the step (f), weldering Termination process is in accordance with by concave to convex technique, it is to avoid weld seam molten bath is trickled downwards, is molded poor.
9. a kind of abnormally-structured method for laser welding according to claim 1, it is characterised in that:In the step (g), institute It is 0.8-1.2 that weld shape is stated for dimpling, form factor.
10. a kind of abnormally-structured method for laser welding according to claim 1, it is characterised in that:In the step (h), The interlayer temperature control is in the range of less than or equal to 150 degree.
CN201611113230.4A 2016-12-06 2016-12-06 Special-shape structure laser welding method CN106624364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611113230.4A CN106624364A (en) 2016-12-06 2016-12-06 Special-shape structure laser welding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611113230.4A CN106624364A (en) 2016-12-06 2016-12-06 Special-shape structure laser welding method

Publications (1)

Publication Number Publication Date
CN106624364A true CN106624364A (en) 2017-05-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019228313A1 (en) * 2018-06-01 2019-12-05 Liu Wensi Semi-automatic apparatus for performing laser welding repair using manual filling

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08118049A (en) * 1994-08-31 1996-05-14 Ishikawajima Harima Heavy Ind Co Ltd Laser cladding method
CN101518863A (en) * 2008-04-18 2009-09-02 华中科技大学 Method for utilizing laser welding to repair ancient chime bell
CN103934571A (en) * 2014-04-11 2014-07-23 上海交通大学 Thick plate robot welding system and multilayer multiple-pass weld real-time tracking and planning method
CN105149786A (en) * 2015-10-19 2015-12-16 哈尔滨工业大学 Narrow-gap laser-scanning multi-layer self-melting welding method based on prefabricated welding materials
CN105478963A (en) * 2016-01-11 2016-04-13 无锡透平叶片有限公司 Turbine blade gas metal arc welding water erosion preventing method
CN106077901A (en) * 2016-07-01 2016-11-09 南京航空航天大学 Electric arc based on hot-work die failure site increases material manufacture method
CN106141436A (en) * 2016-08-17 2016-11-23 广东工业大学 Wire filling laser welding increases material repair apparatus and method for repairing and mending

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08118049A (en) * 1994-08-31 1996-05-14 Ishikawajima Harima Heavy Ind Co Ltd Laser cladding method
CN101518863A (en) * 2008-04-18 2009-09-02 华中科技大学 Method for utilizing laser welding to repair ancient chime bell
CN103934571A (en) * 2014-04-11 2014-07-23 上海交通大学 Thick plate robot welding system and multilayer multiple-pass weld real-time tracking and planning method
CN105149786A (en) * 2015-10-19 2015-12-16 哈尔滨工业大学 Narrow-gap laser-scanning multi-layer self-melting welding method based on prefabricated welding materials
CN105478963A (en) * 2016-01-11 2016-04-13 无锡透平叶片有限公司 Turbine blade gas metal arc welding water erosion preventing method
CN106077901A (en) * 2016-07-01 2016-11-09 南京航空航天大学 Electric arc based on hot-work die failure site increases material manufacture method
CN106141436A (en) * 2016-08-17 2016-11-23 广东工业大学 Wire filling laser welding increases material repair apparatus and method for repairing and mending

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019228313A1 (en) * 2018-06-01 2019-12-05 Liu Wensi Semi-automatic apparatus for performing laser welding repair using manual filling

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Application publication date: 20170510