CN105149789A - Angle joint laser welding technology for 0.5 mm galvanized plate - Google Patents
Angle joint laser welding technology for 0.5 mm galvanized plate Download PDFInfo
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- CN105149789A CN105149789A CN201510709810.9A CN201510709810A CN105149789A CN 105149789 A CN105149789 A CN 105149789A CN 201510709810 A CN201510709810 A CN 201510709810A CN 105149789 A CN105149789 A CN 105149789A
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- welding
- galvanized sheet
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- 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
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- Mechanical Engineering (AREA)
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Abstract
The invention relates to an angle joint laser welding technology for a 0.5 mm galvanized plate, and belongs to the technical field of welding processes. According to the technology, angle joint laser welding is conducted on the 0.5 mm galvanized plate through the steps of preparation before welding, clamping, point solidification, welding and the like. When the galvanized plate is subjected to laser welding, a galvanizing coating can be removed quickly by adjusting the appropriate welding parameters through the characteristic that laser energy is highly centralized, the influence on welded seam performance by the galvanizing coating in the welding process is lowered, hence, splatter and adhering slag are avoided after welding, and follow-up cleaning is needless.
Description
Technical field
The present invention relates to a kind of 0.5mm galvanized sheet corner connection laser welding process, belong to welding technique field.
Background technology
In prior art, due to the impact of zinc coat, the welding of galvanized sheet implements all more difficult, and especially the welding of corner joint is difficult to realize especially.Laser weld can adopt continuously or pulse laser beam is realized, and the principle of laser weld can be divided into heat-conduction-type to weld and Laser Deep Penetration Welding.Power density is less than 10
4~ 10
5w/cm
2for heat conduction welding, now fusion penetration is shallow, speed of welding is slow; Power density is greater than 10
5~ 10
7w/cm
2time, metal surface, by the recessed one-tenth of heat effect " hole ", forms deep penetration welding, has the advantages that speed of welding is fast, depth-to-width ratio is large.
The principle of laser weld is made up of optics oscillator and the medium be placed between the end mirror of oscillator hole two.When medium is subject to being excited to higher-energy state, start to produce same-phase light wave and between two end mirrors roundtrip, form the string knot effect of photoelectricity, light wave amplified, and obtains enough energy and start to launch laser.
And with laser 0.5mm galvanized sheet angle welding welded and belong to new welding procedure, utilizing laser weld galvanized sheet significantly can reduce the impact of zinc coat butt welded seam when welding, obviously promoting Weld Performance.
Summary of the invention
The object of the invention is to utilize suitable laser weld parameters to overcome conventional bonding technique affect seriously by zinc coat when galvanized sheet corner joint welds, cause the deficiency that joint performance is deteriorated, a kind of 0.5mm galvanized sheet corner connection laser welding process is provided.
According to technical scheme provided by the invention, 0.5mm galvanized sheet corner connection laser welding process, step is:
(1) welds prepares:
A, getting 0.5mm galvanized sheet, observe its junction to be welded, requiring smooth without scratching, indenture; Do not meet the demands and then adopt sand papering solder side, and the depth of parallelism of solder side need be ensured during polishing, prevent from being polished into cambered surface;
B, rear cleaning to-be-welded region of having polished, with acetone or alcohol by thorough for solder side wiped clean, the greasy dirt etc. in welded seam area 3mm is cleaned out equally; When adopt alcohol clean time, need wait alcohol thoroughly volatilize after carry out further work again;
(2) clamping:
C, then to splice with the 0.5mm galvanized sheet to be welded that fixture clamping compaction step (1) obtains; Connecting method is the edge of the one side side of one piece of galvanized sheet being propped up another block galvanized sheet, ensures its flush edge, and assembled gap, commissure must not be greater than 0.05mm;
D, to carry out point solid, only needs weld seam both sides and a zone line each point solid some when point is solid; Parameter when point is solid: power 200 ~ 300w, 0.2 second weld interval, defocusing amount-3 ~+3;
(3) weld:
E, solid to point after 0.5mm galvanized sheet weld; During welding, laser beam is vertical with weld seam and be the inclination angle of 43-47 degree with solder side;
F, adjustment laser welding process parameter, power 1000 ~ 1200W, defocusing amount+2 ~+3, speed of welding 2500 ~ 3000mm/min, protective gas is 99.9%Ar, shield gas flow rate 10 ~ 15L/min, and protective gas direction is the position entering 1 ~ 2mm after direction before welding;
Weld after g, adjustment, during welding, prevented outer gas stream from affecting welding.
Beneficial effect of the present invention: the laser welding technology that the present invention uses has thermal source and concentrates, and heat-affected zone is little, the advantage that workpiece welding deformation is little.Have very large using value at the galvanized sheet thin plate manufacture field of below 2mm, after workpiece welding, still can well ensure the angle of its clamping compared to traditional welding the present invention, this is that other welding are difficult to accomplish.
During laser weld galvanized sheet of the present invention, the characteristic of laser energy high concentration is utilized to remove zinc coat rapidly by adjusting suitable welding parameter, reduce the impact of zinc coat properties of weld when welding, so without splashing after welding, dross etc. need follow-up cleaning.
Detailed description of the invention
Below in conjunction with instantiation, the invention will be further described.
Workpiece material is galvanized sheet, and thickness of slab is 0.5mm, and joint geometry is corner connection.Require well shaping, the defects such as boundless surface pores, crackle, complete penetraction and fusion in welding.
Embodiment 10.5mm galvanized sheet corner connection laser welding process
Step is:
(1) welds prepares:
A, getting 0.5mm galvanized sheet, observe its junction to be welded, requiring smooth without scratching, indenture; Do not meet the demands and then adopt sand papering solder side, and the depth of parallelism of solder side need be ensured during polishing, prevent from being polished into cambered surface;
B, rear cleaning to-be-welded region of having polished, with acetone or alcohol by thorough for solder side wiped clean, the greasy dirt etc. in welded seam area 3mm is cleaned out equally; When adopt alcohol clean time, need wait alcohol thoroughly volatilize after carry out further work again;
(2) clamping:
C, then to splice with the 0.5mm galvanized sheet to be welded that fixture clamping compaction step (1) obtains; Connecting method is the edge of the one side side of one piece of galvanized sheet being propped up another block galvanized sheet, ensures its flush edge, and assembled gap, commissure must not be greater than 0.05mm;
D, to carry out point solid, only needs weld seam both sides and a zone line each point solid some when point is solid; Parameter when point is solid: power 200w, 0.2 second weld interval, defocusing amount+3;
(3) weld:
E, solid to point after 0.5mm galvanized sheet weld; During welding, laser beam is vertical with weld seam and be the inclination angle of 47 degree with solder side;
F, adjustment laser welding process parameter, power 1200W, defocusing amount+2, speed of welding 3000mm/min, protective gas is 99.9%Ar, shield gas flow rate 10L/min, and protective gas direction is the position entering 1mm after direction before welding;
Weld after g, adjustment, during welding, prevented outer gas stream from affecting welding.
Embodiment 20.5mm galvanized sheet corner connection laser welding process
Step is:
(1) welds prepares:
A, getting 0.5mm galvanized sheet, observe its junction to be welded, requiring smooth without scratching, indenture; Do not meet the demands and then adopt sand papering solder side, and the depth of parallelism of solder side need be ensured during polishing, prevent from being polished into cambered surface;
B, rear cleaning to-be-welded region of having polished, with acetone or alcohol by thorough for solder side wiped clean, the greasy dirt etc. in welded seam area 3mm is cleaned out equally; When adopt alcohol clean time, need wait alcohol thoroughly volatilize after carry out further work again;
(2) clamping:
C, then to splice with the 0.5mm galvanized sheet to be welded that fixture clamping compaction step (1) obtains; Connecting method is the edge of the one side side of one piece of galvanized sheet being propped up another block galvanized sheet, ensures its flush edge, and assembled gap, commissure must not be greater than 0.05mm;
D, to carry out point solid, only needs weld seam both sides and a zone line each point solid some when point is solid; Parameter when point is solid: power 200w, 0.2 second weld interval, defocusing amount-3;
(3) weld:
E, solid to point after 0.5mm galvanized sheet weld; During welding, laser beam is vertical with weld seam and be the inclination angle of 43 degree with solder side;
F, adjustment laser welding process parameter, power 1000 ~ 1200W, defocusing amount+2, speed of welding 2500mm/min, protective gas is 99.9%Ar, shield gas flow rate 15L/min, and protective gas direction is the position entering 2mm after direction before welding;
Weld after g, adjustment, during welding, prevented outer gas stream from affecting welding.
Embodiment 3
0.5mm galvanized sheet corner connection laser welding process, is characterized in that step is:
(1) welds prepares:
A, getting 0.5mm galvanized sheet, observe its junction to be welded, requiring smooth without scratching, indenture; Do not meet the demands and then adopt sand papering solder side, and the depth of parallelism of solder side need be ensured during polishing, prevent from being polished into cambered surface;
B, rear cleaning to-be-welded region of having polished, with acetone or alcohol by thorough for solder side wiped clean, the greasy dirt etc. in welded seam area 3mm is cleaned out equally; When adopt alcohol clean time, need wait alcohol thoroughly volatilize after carry out further work again;
(2) clamping:
C, then to splice with the 0.5mm galvanized sheet to be welded that fixture clamping compaction step (1) obtains; Connecting method is the edge of the one side side of one piece of galvanized sheet being propped up another block galvanized sheet, ensures its flush edge, and assembled gap, commissure must not be greater than 0.05mm;
D, to carry out point solid, only needs weld seam both sides and a zone line each point solid some when point is solid; Parameter when point is solid: power 250w, 0.2 second weld interval, defocusing amount+1;
(3) weld:
E, solid to point after 0.5mm galvanized sheet weld; During welding, laser beam is vertical with weld seam and be the inclination angle of 43-47 degree with solder side;
F, adjustment laser welding process parameter, power 1100W, defocusing amount+3, speed of welding 2800mm/min, protective gas is 99.9%Ar, shield gas flow rate 13L/min, and protective gas direction is the position entering 1.5mm after direction before welding;
Weld after g, adjustment, during welding, prevented outer gas stream from affecting welding.
This technique is welded by the corner joint of Proper Match to 0.5mm galvanized sheet of power and speed can reach well shaping, free of surface defects requirement completely.
Claims (1)
1.0.5mm galvanized sheet corner connection laser welding process, is characterized in that step is:
(1) welds prepares:
A, getting 0.5mm galvanized sheet, observe its junction to be welded, requiring smooth without scratching, indenture; Do not meet the demands and then adopt sand papering solder side, and the depth of parallelism of solder side need be ensured during polishing, prevent from being polished into cambered surface;
B, rear cleaning to-be-welded region of having polished, with acetone or alcohol by thorough for solder side wiped clean, the greasy dirt etc. in welded seam area 3mm is cleaned out equally; When adopt alcohol clean time, need wait alcohol thoroughly volatilize after carry out further work again;
(2) clamping:
C, the 0.5mm galvanized sheet to be welded obtained by fixture clamping compaction step (1), then splice; Connecting method is the edge of the one side side of one piece of galvanized sheet being propped up another block galvanized sheet, ensures its flush edge, and assembled gap, commissure must not be greater than 0.05mm;
D, to carry out point solid, only needs weld seam both sides and a zone line each point solid some when point is solid; Parameter when point is solid: power 200 ~ 300w, 0.2 second weld interval, defocusing amount-3 ~+3;
(3) weld:
E, solid to point after 0.5mm galvanized sheet weld; During welding, laser beam is vertical with weld seam and be the inclination angle of 43-47 degree with solder side;
F, adjustment laser welding process parameter, power 1000 ~ 1200W, defocusing amount+2 ~+3, speed of welding 2500 ~ 3000mm/min, protective gas is 99.9%Ar, shield gas flow rate 10 ~ 15L/min, and protective gas direction is the position entering 1 ~ 2mm after direction before welding;
Weld after g, adjustment, during welding, prevented outer gas stream from affecting welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510709810.9A CN105149789A (en) | 2015-10-28 | 2015-10-28 | Angle joint laser welding technology for 0.5 mm galvanized plate |
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| CN201510709810.9A CN105149789A (en) | 2015-10-28 | 2015-10-28 | Angle joint laser welding technology for 0.5 mm galvanized plate |
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| CN105149789A true CN105149789A (en) | 2015-12-16 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583925A (en) * | 2016-12-07 | 2017-04-26 | 上海临仕激光科技有限公司 | Laser welding method for galvanized steel sheets for automobile |
| CN106695121A (en) * | 2017-01-09 | 2017-05-24 | 上海交通大学 | Cladding layer removing device and method through laser melting assisted by compressed air |
| CN107498179A (en) * | 2017-09-27 | 2017-12-22 | 杨沁玥 | A kind of filter screen welding procedure |
| CN107824971A (en) * | 2017-09-18 | 2018-03-23 | 重庆文理学院 | A kind of method of galvanized steel plain sheet laser assembly solder welding |
| CN108057955A (en) * | 2016-11-08 | 2018-05-22 | 本田技研工业株式会社 | The laser bonding of galvanized steel plain sheet |
| CN110238607A (en) * | 2018-03-07 | 2019-09-17 | 东莞市宸愿实业有限公司 | A kind of surprise scholar cylinder production processing technology |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057955A (en) * | 2016-11-08 | 2018-05-22 | 本田技研工业株式会社 | The laser bonding of galvanized steel plain sheet |
| US11117216B2 (en) | 2016-11-08 | 2021-09-14 | Honda Motor Co., Ltd. | Laser joining method for galvanized steel sheets |
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| CN106583925B (en) * | 2016-12-07 | 2018-07-31 | 上海临仕激光科技有限公司 | A kind of method for laser welding of Progress in Automobile Galvanized Steel Sheets |
| CN106695121A (en) * | 2017-01-09 | 2017-05-24 | 上海交通大学 | Cladding layer removing device and method through laser melting assisted by compressed air |
| CN107824971A (en) * | 2017-09-18 | 2018-03-23 | 重庆文理学院 | A kind of method of galvanized steel plain sheet laser assembly solder welding |
| CN107498179A (en) * | 2017-09-27 | 2017-12-22 | 杨沁玥 | A kind of filter screen welding procedure |
| CN110238607A (en) * | 2018-03-07 | 2019-09-17 | 东莞市宸愿实业有限公司 | A kind of surprise scholar cylinder production processing technology |
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Application publication date: 20151216 |