CN105364430A - Laser welding method capable of realizing synchronous rolling of edge joints of sheets - Google Patents
Laser welding method capable of realizing synchronous rolling of edge joints of sheets Download PDFInfo
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- CN105364430A CN105364430A CN201510990030.6A CN201510990030A CN105364430A CN 105364430 A CN105364430 A CN 105364430A CN 201510990030 A CN201510990030 A CN 201510990030A CN 105364430 A CN105364430 A CN 105364430A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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
- B23K26/20—Bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
-
- 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
- B23K2101/18—Sheet panels
Abstract
The invention relates to a welding method, in particular to a laser welding method capable of realizing synchronous rolling of edge joints of sheets, and aims to solve problems of laser leakage, discontinuous weld joint formation, large deformation after welding and the like which occur easily during laser welding of the edge joints of the sheets. The method comprises steps as follows: to-be-welded workpieces are treated and clamped; positions of rollers and to-be-welded workpieces as well as related parameters are set; process parameters of the to-be-welded workpieces are set and welding is performed. Compared with traditional arc welding and the like, the method has the advantages that the efficiency is significantly improved, the welding speed is significantly increased, and the production cost is reduced; heat input is reduced, residual deformation and residual stress are reduced, defects are reduced, material welding hot crack tendency is reduced, pores are eliminated, and mechanical properties and sealing performance of the joints are improved.
Description
Technical field
The present invention relates to a kind of thin plate edge joint laser and roll synchronous welding method, belonging to materials processing engineering field.
Background technology
The thin plate type of attachment often used in current industry mostly is overlap joint or docking, mainly in automobile board, motor shaft and the component such as housing, water tank.Usual material is austenite and martensitic stain less steel, precipitation-hardening stainless steel, Langaloy and titanium etc.But, overlap joint or banjo fixing butt jointing welding process in, due to the easy buckling deformation of thin plate make overlap joint effect poor, during docking, issuable pore and crackle also can reduce its mechanical property.Therefore, in the connection procedure of airtight container, generally except adopting overlap joint or docking, also another joint form may be adopted---edge joint.
According to pertinent literature, the method the most often used is TIG weldering and micro-plasma arc welding, easily produces the wild effects such as arc stiffness is little, appearance two arcs during welding, there is cooling shrinkage stress large, heat input is large, and speed of welding is low, welding stress and distortion is large, easily produces the shortcomings such as fire check.
At present, adopt conventional method to carry out plate sheet welding and there are following problems:
(1) for thin plate edge joint welding, especially thickness is less than the edge joint of below 1.0mm, and in employing arc welding process, weld metal easily lower time, causes appearance of weld poor, even cannot connect;
(2) traditional arc welding fusion penetration is shallow, and shearing strength is low;
(3) thermal weld stress is large, and workpiece deformation is comparatively large, and welding process is unstable, easily produces defect, has remarkable impact to mechanical property and sealing;
(4) speed of welding is little, and efficiency is low, inadaptable production in enormous quantities;
(5) be difficult to the Automated condtrol realizing welding process, automaticity is low.
Along with the development of science and technology, butt joint mechanical property and sealing requirements also improve day by day, and thus the Improvement and perfection of its manufacture method has quite great meaning.Laser is as one of the solder technology of development potentiality " 21st century have most ", due to it, to have energy density high, weldquality is good, depth-to-width ratio is large, heat affected area is little, welding deformation is little, and speed of welding is fast and the advantage such as easily to be automated, and is widely used in the industrial production.
But laser weld requires very high to structural member assembly precision, for thin plate edge joint, how to ensure that fitting tightly of plate in laser beam welding is the key technology of this Joining Technology with the stability of welding process.Meanwhile, the weld seam of laser weld is narrower, and in actual welding process, easily produces a large amount of gas hole defect in joint, and above shortcoming is all unfavorable for mechanical property and the sealing of this type of structural member.
Summary of the invention
The present invention is directed to the light leak easily occurred in laser weld thin plate edge joint process, the problem such as appearance of weld is discontinuous, post welding distortion is large, and propose the method for laser welding that a kind of thin plate edge joint synchronously rolls.
The present invention is intended to the edge joint of welding thin plate, adopts laser and rolls synchronous welding method, and carry out individual layer welding and obtain satisfactory weld seam, its schematic diagram as shown in Figure 1.Laser with roll synchronous welding be conventional laser is welded carry out improving and with welding the method rolling and process and combine and obtain.The two thin plate both sides of vertically placing in parallel gapless place a roller respectively, in welding process, butt welded seam rolls, make the strict centering of weld seam, laser beam is positioned at two dull and stereotyped seam crossings, two roller relative laser bundle positions remain unchanged, and complete welding by the rotation of roller and the movement of laser beam.
The method for laser welding that a kind of thin plate edge joint of the present invention synchronously rolls, it carries out according to following steps:
Step one: the both side surface at the position to be welded of workpiece to be welded is carried out polishing or cleaning;
Step 2: the workpiece to be welded after polishing or cleaning is fixed on welding tool setup;
Step 3: keep roller horizontally disposed in welding direction both sides, two roller height are consistent, and distance weld seam upper surface vertical range is 1 ~ 10mm, laser beam vertical incidence, and focus is positioned at two dull and stereotyped seam crossings of workpiece to be welded, two roller relative laser bundle positions remain unchanged, and two-wheeled and absorption surface position to be welded and laser beam horizontal range L are-100mm ~ 100mm; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 50 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 10mm;
Step 4: setting technological parameter, laser power is 500W ~ 5kW, and defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 5L/min ~ 35L/min; Roller pressure is 1kN ~ 20kN, and speed of welding is 0.5 ~ 3m/min;
Step 5: open laser instrument and rolling device power supply, starts laser synchronization and rolls welding control system, implement welding; Namely the laser weld that described thin plate edge joint synchronously rolls is completed.
The present invention mainly contains some advantage following compared to traditional lap joint welding:
1, compared to traditional electrical arc-welding etc., significantly improve efficiency, speed of welding, reduce production cost.Reduce heat input, reduce residual deformation and residual stress, reduce defect, reduce material welding hot crack tendency and eliminate pore, improving joint mechanical property and sealing;
2, compared to single laser weld, rolled by butt welded seam both sides, effect have following some: (1) not only butt joint is fixing comparatively strong, eliminates gap between plate, reduces assembly precision requirement, better utilize laser energy, prevent light leak and appearance of weld discontinuous.(2) reduce the requirement to preceding working procedure (shear) linearity simultaneously, reduce production cost, improve welding quality.(3) carry out rolling with weldering owing to employing roller, not only can reduce the distortion of thin plate, reduce the orthopedic cost of postwelding, and weld seam internal stress can be reduced, significantly improve the fatigue behaviour of weld seam.
Accompanying drawing explanation
Fig. 1 is that laser synchronization of the present invention rolls welding schematic diagram;
Fig. 2 is the weld seam front Electronic Speculum figure of embodiment 1 weld seam macro morphology;
Fig. 3 is the weld seam side Electronic Speculum figure of embodiment 1 weld seam macro morphology;
Fig. 4 is single laser welded seam front pattern Electronic Speculum figure of embodiment 1;
Fig. 5 is TIG welding line macro morphology weld seam front Electronic Speculum figure;
Fig. 6 is TIG welding line macro morphology weld seam side Electronic Speculum figure.
Detailed description of the invention
Detailed description of the invention one: the method for laser welding that a kind of thin plate edge joint of present embodiment synchronously rolls, it carries out according to following steps:
Step one: the both side surface at the position to be welded of workpiece to be welded is carried out polishing or cleaning;
Step 2: the workpiece to be welded after polishing or cleaning is fixed on welding tool setup;
Step 3: keep roller horizontally disposed in welding direction both sides, two roller height are consistent, and distance weld seam upper surface vertical range is 1 ~ 10mm, laser beam vertical incidence, and focus is positioned at two dull and stereotyped seam crossings of workpiece to be welded, two roller relative laser bundle positions remain unchanged, and two-wheeled and absorption surface position to be welded and laser beam horizontal range L are-100mm ~ 100mm; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 50 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 10mm;
Step 4: setting technological parameter, laser power is 500W ~ 5kW, and defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 5L/min ~ 35L/min; Roller pressure is 1kN ~ 20kN, and speed of welding is 0.5 ~ 3m/min;
Step 5: open laser instrument and rolling device power supply, starts laser synchronization and rolls welding control system, implement welding; Namely the laser weld that described thin plate edge joint synchronously rolls is completed.
Present embodiment rolls the edge joint of soldering stainless steel thin plate at laser synchronization, and laser instrument adopts CO
2gas laser, YAG solid state laser, semiconductor laser or optical fiber laser etc., wherein, to adopt the YAG solid state laser of Optical Fiber Transmission, semiconductor laser or optical fiber laser welding effect best, because it is more flexibly with efficient.
Detailed description of the invention two: present embodiment and detailed description of the invention one unlike: the negative value of described L represents along welding direction, and laser beam is front, and roller is rear; Otherwise on the occasion of.Other is identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment and detailed description of the invention one unlike: roller end surface shape is circular arc or planar shaped.Other is identical with detailed description of the invention one.
Detailed description of the invention four: present embodiment and detailed description of the invention one unlike: the parameter described in step 3, after setting, all remains unchanged in welding process.Other is identical with detailed description of the invention one.
Detailed description of the invention five: present embodiment and detailed description of the invention one are-80mm ~ 80mm unlike: the two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 100 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 8mm.Other is identical with detailed description of the invention one.
Detailed description of the invention six: present embodiment and detailed description of the invention one are-70mm ~ 70mm unlike: the two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 120 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 7mm.Other is identical with detailed description of the invention one.
Detailed description of the invention seven: present embodiment and detailed description of the invention one are-60mm ~ 60mm unlike: the two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 150 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 6mm.Other is identical with detailed description of the invention one.
Detailed description of the invention eight: present embodiment and detailed description of the invention one are-50mm ~ 50mm unlike: the two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 180 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 5mm.Other is identical with detailed description of the invention one.
Detailed description of the invention nine: present embodiment and detailed description of the invention one are-40mm ~ 40mm unlike: the two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 200 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 4mm.Other is identical with detailed description of the invention one.
Detailed description of the invention ten: present embodiment and detailed description of the invention one are-30mm ~ 30mm unlike: the two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 220 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 4mm.Other is identical with detailed description of the invention one.
Detailed description of the invention 11: present embodiment and detailed description of the invention one are-20mm ~ 20mm unlike: the two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 250 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 3mm.Other is identical with detailed description of the invention one.
Detailed description of the invention 12: present embodiment and detailed description of the invention one are-10mm ~ 10mm unlike: the two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 280 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 2mm.Other is identical with detailed description of the invention one.
Detailed description of the invention 13: present embodiment and detailed description of the invention one unlike: the laser power described in step 4 is 1000W ~ 5kW, and defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 10L/min ~ 35L/min; Roller pressure is 5kN ~ 20kN, and speed of welding is 1 ~ 3m/min.Other is identical with detailed description of the invention one.
Detailed description of the invention 14: present embodiment and detailed description of the invention one unlike: the laser power described in step 4 is 2000W ~ 5kW, and defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 15L/min ~ 35L/min; Roller pressure is 10kN ~ 20kN, and speed of welding is 1 ~ 3m/min.Other is identical with detailed description of the invention one.
Detailed description of the invention 15: present embodiment and detailed description of the invention one unlike: the laser power described in step 4 is 2500W ~ 5kW, and defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 20L/min ~ 35L/min; Roller pressure is 10kN ~ 20kN, and speed of welding is 1 ~ 3m/min.Other is identical with detailed description of the invention one.
Detailed description of the invention 16: present embodiment and detailed description of the invention one unlike: the laser power described in step 4 is 3000W ~ 5kW, and defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 25L/min ~ 35L/min; Roller pressure is 10kN ~ 20kN, and speed of welding is 1 ~ 3m/min.Other is identical with detailed description of the invention one.
Detailed description of the invention 17: present embodiment and detailed description of the invention one unlike: the laser power described in step 4 is 4000W ~ 5kW, and defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 25L/min ~ 35L/min; Roller pressure is 10kN ~ 20kN, and speed of welding is 1 ~ 3m/min.Other is identical with detailed description of the invention one.
Content of the present invention is not limited only to the content of the respective embodiments described above, and the combination of one of them or several detailed description of the invention equally also can realize the object of inventing.
Beneficial effect of the present invention is verified by following examples:
Embodiment 1
Single Laser Welding, TIG is utilized to weld respectively and the thick corrosion resistant plate edge joint of this method welding 2mm.Specific experiment method is as follows:
Method of the present invention is adopted to weld the thick corrosion resistant plate edge joint of 2mm:
Step one: required precision is processed at the position to be welded of workpiece to be welded as required, and the both side surface after work pieces process is polished or cleans;
Step 2: the workpiece to be welded after polishing or cleaning is fixed on welding tool setup;
Step 3: keep roller horizontally disposed in welding direction both sides, two roller height are consistent, and distance weld seam upper surface vertical range is 5mm, laser beam vertical incidence, and focus is positioned at two dull and stereotyped seam crossings, two roller relative laser bundle positions remain unchanged, and two-wheeled and absorption surface position and laser beam horizontal range L are 0mm, realize welding by the rotation of roller and the movement of laser beam; Roller diameter is 100mm; The end surface shape of roller is planar shaped, thickness 10mm, contact surface width 6mm;
Step 4: setting technological parameter, according to the thickness of material to be processed, laser power is 3500W, and defocusing amount is+1mm; Protection gas adopts Ar gas, and shield gas flow rate is 20L/min; Roller pressure is 5kN; Speed of welding is 1m/min; Above-mentioned parameter, once determine, all remains unchanged in welding process;
Step 5: open laser instrument and rolling device power supply, starts laser synchronization and rolls welding control system, implement welding.
Fig. 2 and Fig. 3 is respectively weld seam front pattern when adopting the present embodiment to carry out the thick corrosion resistant plate edge joint welding of 2mm and heat affected area, side pattern, as seen from the figure when adopting the present embodiment to weld, welding process is stablized, smooth attractive in appearance, the uniformity of appearance of weld, without obvious bad defect, heat affected area scope is less.
Embodiment 2
The method of the present embodiment list Laser Welding welding 2mm thick corrosion resistant plate edge joint is as follows:
Step one: required precision is processed at the position to be welded of workpiece to be welded as required, and the both side surface after work pieces process is polished or cleans;
Step 2: the workpiece to be welded after polishing or cleaning is fixed on welding tool setup;
Step 3: setting technological parameter, according to the thickness of material to be processed, laser power is 3500W, and defocusing amount is+1mm; Protection gas adopts Ar gas, and shield gas flow rate is 20L/min; Speed of welding is 1m/min; Above-mentioned parameter, once determine, all remains unchanged in welding process;
Step 4: open laser power supply, starts laser welding control system, implements welding;
Fig. 4 is weld seam front pattern when adopting single Laser Welding to carry out the thick corrosion resistant plate edge joint welding of 2mm, and the existence due to gap makes laser beam light leak, and appearance of weld is continuous not, and weld seam is narrower.
Embodiment 3
The TIG weldering welding 2mm thick corrosion resistant plate edge joint concrete grammar of the present embodiment is as follows:
Step one: required precision is processed at the position to be welded of workpiece as required, and the both side surface after work pieces process is polished or cleans;
Step 2: the workpiece to be welded after polishing or cleaning is fixed on welding tool setup;
Step 3: setting technological parameter, according to the thickness of material to be processed, it is 10V that TIG welds arc voltage, and electric current is 40A; Protection gas adopts Ar gas, and shield gas flow rate is 20L/min; Speed of welding is 0.2m/min; Above-mentioned parameter, once determine, all remains unchanged in welding process;
Step 4: open tig arc welding machine power supply, starts control system, implements welding;
Fig. 5 and Fig. 6 is respectively weld seam front pattern when adopting TIG weldering to carry out the thick corrosion resistant plate edge joint welding of 2mm and heat affected area, side pattern, can find out when adopting TIG to weld, welding process is stable not, heat affected area scope is comparatively large, and speed of welding can only reach 1/5 of laser weld.
Embodiment 4
The method for laser welding that a kind of thin plate edge joint of the present embodiment synchronously rolls, it carries out according to following steps:
Step one: required precision is processed at the position to be welded of workpiece to be welded as required, and the both side surface after work pieces process is polished or cleans;
Step 2: the workpiece to be welded after polishing or cleaning is fixed on welding tool setup;
Step 3: keep roller horizontally disposed in welding direction both sides, two roller height are consistent, and distance weld seam upper surface vertical range is 10mm, laser beam vertical incidence, and focus is positioned at two dull and stereotyped seam crossings, two roller relative laser bundle positions remain unchanged, and two-wheeled and absorption surface position and laser beam horizontal range L are 20mm, realize welding by the rotation of roller and the movement of laser beam; Roller diameter is 300mm; The end surface shape of roller is planar shaped, thickness 20mm, contact surface width 10mm;
Step 4: setting technological parameter, according to the thickness of material to be processed, laser power is 3500W, and defocusing amount is+1mm; Protection gas adopts Ar gas, and shield gas flow rate is 20L/min; Roller pressure is 5kN; Speed of welding is 1m/min; Above-mentioned parameter, once determine, all remains unchanged in welding process;
Step 5: open laser instrument and rolling device power supply, starts laser synchronization and rolls welding control system, implement welding.
Embodiment 5
The method for laser welding that a kind of thin plate edge joint of the present embodiment synchronously rolls, it carries out according to following steps:
Step one: required precision is processed at the position to be welded of workpiece to be welded as required, and the both side surface after work pieces process is polished or cleans;
Step 2: the workpiece to be welded after polishing or cleaning is fixed on welding tool setup;
Step 3: keep roller horizontally disposed in welding direction both sides, two roller height are consistent, and distance weld seam upper surface vertical range is 1mm, laser beam vertical incidence, and focus is positioned at two dull and stereotyped seam crossings, two roller relative laser bundle positions remain unchanged, and two-wheeled and absorption surface position and laser beam horizontal range L are-20mm, realize welding by the rotation of roller and the movement of laser beam; Roller diameter is 50mm; The end surface shape of roller is planar shaped, thickness 10mm, contact surface width 10mm;
Step 4: setting technological parameter, according to the thickness of material to be processed, laser power is 3500W, and defocusing amount is+1mm; Protection gas adopts Ar gas, and shield gas flow rate is 20L/min; Roller pressure is 5kN; Speed of welding is 1m/min; Above-mentioned parameter, once determine, all remains unchanged in welding process;
Step 5: open laser instrument and rolling device power supply, starts laser synchronization and rolls welding control system, implement welding.
Embodiment 6
The method for laser welding that a kind of thin plate edge joint of the present embodiment synchronously rolls, it carries out according to following steps:
Step one: required precision is processed at the position to be welded of workpiece to be welded as required, and the both side surface after work pieces process is polished or cleans;
Step 2: the workpiece to be welded after polishing or cleaning is fixed on welding tool setup;
Step 3: keep roller horizontally disposed in welding direction both sides, two roller height are consistent, and distance weld seam upper surface vertical range is 6mm, laser beam vertical incidence, and focus is positioned at two dull and stereotyped seam crossings, two roller relative laser bundle positions remain unchanged, and two-wheeled and absorption surface position and laser beam horizontal range L are 1mm, realize welding by the rotation of roller and the movement of laser beam; Roller diameter is 100mm; The end surface shape of roller is planar shaped, thickness 10mm, contact surface width 8mm;
Step 4: setting technological parameter, according to the thickness of material to be processed, laser power is 3800W, and defocusing amount is+1.5mm; Protection gas adopts Ar gas, and shield gas flow rate is 20L/min; Roller pressure is 10kN; Speed of welding is 1m/min; Above-mentioned parameter, once determine, all remains unchanged in welding process;
Step 5: open laser instrument and rolling device power supply, starts laser synchronization and rolls welding control system, implement welding.
Above embodiment 4 ~ 6, compared to traditional electrical arc-welding etc., significantly improves efficiency, speed of welding, reduces production cost.Reduce heat input, reduce residual deformation and residual stress, reduce defect, reduce material welding hot crack tendency and eliminate pore, improving joint mechanical property and sealing; And good welding effect can be reached.
Finally should be noted that; above embodiment is only do not limit the scope of the invention the description of the better embodiment of the present invention; although with reference to preferred embodiment to invention has been detailed description; those skilled in the art are to be understood that; can modify to technical solution of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (10)
1. the method for laser welding that synchronously rolls of thin plate edge joint, is characterized in that it carries out according to following steps:
Step one: the both side surface at the position to be welded of workpiece to be welded is carried out polishing or cleaning;
Step 2: the workpiece to be welded after polishing or cleaning is fixed on welding tool setup;
Step 3: keep roller horizontally disposed in welding direction both sides, two roller height are consistent, and distance weld seam upper surface vertical range is 1 ~ 10mm, laser beam vertical incidence, and focus is positioned at two dull and stereotyped seam crossings of workpiece to be welded, two roller relative laser bundle positions remain unchanged, and two-wheeled and absorption surface position to be welded and laser beam horizontal range L are-100mm ~ 100mm; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 50 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 10mm;
Step 4: setting technological parameter, laser power is 500W ~ 5kW, and defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 5L/min ~ 35L/min; Roller pressure is 1kN ~ 20kN, and speed of welding is 0.5 ~ 3m/min;
Step 5: open laser instrument and rolling device power supply, starts laser synchronization and rolls welding control system, implement welding; Namely the laser weld that described thin plate edge joint synchronously rolls is completed.
2. the method for laser welding that synchronously rolls of a kind of thin plate edge joint according to claim 1, it is characterized in that the negative value representative of described L is along welding direction, laser beam is front, and roller is rear; Otherwise on the occasion of.
3. the method for laser welding that synchronously rolls of a kind of thin plate edge joint according to claim 1, is characterized in that roller end surface shape is circular arc or planar shaped.
4. the method for laser welding that synchronously rolls of a kind of thin plate edge joint according to claim 1, is characterized in that the parameter described in step 3, after setting, all remains unchanged in welding process.
5. the method for laser welding that synchronously rolls of a kind of thin plate edge joint according to claim 1, is characterized in that two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L are-80mm ~ 80mm; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 100 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 8mm.
6. the method for laser welding that synchronously rolls of a kind of thin plate edge joint according to claim 5, is characterized in that two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L are-60mm ~ 60mm; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 200 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 6mm.
7. the method for laser welding that synchronously rolls of a kind of thin plate edge joint according to claim 6, is characterized in that two-wheeled described in step 3 and absorption surface position to be welded and laser beam horizontal range L are-40mm ~ 40mm; Welding is realized by the rotation of roller and the movement of laser beam; Wherein, roller diameter is 200 ~ 300mm; Roller thickness≤20mm; Contact surface width is 1 ~ 4mm.
8. the method for laser welding that synchronously rolls of a kind of thin plate edge joint according to claim 1, it is characterized in that the laser power described in step 4 is 1000W ~ 5kW, defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 10L/min ~ 35L/min; Roller pressure is 5kN ~ 20kN, and speed of welding is 1 ~ 3m/min.
9. the method for laser welding that synchronously rolls of a kind of thin plate edge joint according to claim 8, it is characterized in that the laser power described in step 4 is 2000W ~ 5kW, defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 20L/min ~ 35L/min; Roller pressure is 10kN ~ 20kN, and speed of welding is 1 ~ 3m/min.
10. the method for laser welding that synchronously rolls of a kind of thin plate edge joint according to claim 9, it is characterized in that the laser power described in step 4 is 3000W ~ 5kW, defocusing amount is ﹣ 3 ~ ﹢ 3mm, and protection gas adopts Ar gas, and shield gas flow rate is 30L/min ~ 35L/min; Roller pressure is 15kN ~ 20kN, and speed of welding is 1 ~ 3m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510990030.6A CN105364430B (en) | 2015-12-24 | 2015-12-24 | The method for laser welding that a kind of thin plate edge joint synchronously rolls |
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|---|---|---|---|
| CN201510990030.6A CN105364430B (en) | 2015-12-24 | 2015-12-24 | The method for laser welding that a kind of thin plate edge joint synchronously rolls |
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| CN109352180A (en) * | 2018-12-06 | 2019-02-19 | 哈尔滨工业大学 | A kind of compound sealing method of edge joint laser-electric arc of internal pressurization |
| CN111014952A (en) * | 2019-12-30 | 2020-04-17 | 新疆八一钢铁股份有限公司 | Welding method of cold-rolled 25# steel solid laser welding machine |
| CN111069703A (en) * | 2019-12-10 | 2020-04-28 | 中国科学院金属研究所 | Method for prolonging fatigue life of welded joint |
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| CN109352180A (en) * | 2018-12-06 | 2019-02-19 | 哈尔滨工业大学 | A kind of compound sealing method of edge joint laser-electric arc of internal pressurization |
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| CN111014952A (en) * | 2019-12-30 | 2020-04-17 | 新疆八一钢铁股份有限公司 | Welding method of cold-rolled 25# steel solid laser welding machine |
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| CN105364430B (en) | 2018-03-30 |
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