CN114505562A - Digital intelligent laser guide welding method - Google Patents

Digital intelligent laser guide welding method Download PDF

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Publication number
CN114505562A
CN114505562A CN202210324579.1A CN202210324579A CN114505562A CN 114505562 A CN114505562 A CN 114505562A CN 202210324579 A CN202210324579 A CN 202210324579A CN 114505562 A CN114505562 A CN 114505562A
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China
Prior art keywords
welding
laser
layer
parameters
walking
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CN202210324579.1A
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Chinese (zh)
Inventor
胥林东
刘翔宇
宋劲松
张天旭
苏浩男
汤立松
王�锋
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Chengde Petroleum College
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Chengde Petroleum College
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Priority to CN202210324579.1A priority Critical patent/CN114505562A/en
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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
    • B23K9/00—Arc welding or cutting
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/127—Means for tracking lines during arc welding or cutting
    • B23K9/1272—Geometry oriented, e.g. beam optical trading
    • B23K9/1274—Using non-contact, optical means, e.g. laser means
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Arc Welding In General (AREA)

Abstract

The invention discloses a digital intelligent laser guide welding method, which comprises the following steps: pre-adjusting parameters of a laser priming layer, a filling layer and a cover layer through software; adjusting parameters of a welding gun; and starting the laser transmitter, enabling the laser transmitter to work according to preset parameters of software, operating by adopting a welding gun according to relevant parameters such as a path, an angle, a residence time stroke, a walking amplitude and speed and the like guided by laser, and sequentially welding the priming layer, the filling layer and the cover layer, namely realizing digital intelligent laser-guided welding. The method can be used for guiding the practice of position welding skills such as horizontal welding, vertical welding, transverse welding, overhead welding and the like, and the laser device is used for projecting zigzag, triangular, circular, crescent and other patterns to guide different bar conveying methods, welding angles, welding speeds, retention time and other welding methods.

Description

Digital intelligent laser guide welding method
Technical Field
The invention relates to the technical field of laser welding, in particular to a digital intelligent laser guide welding method.
Background
Shielded metal arc welding is a method of joining workpieces by applying heat or pressure, or both, with or without a filler material, to join the workpieces, and welding may be performed to join metallic materials as well as non-metallic materials. The quality of the welding seam can be controlled by adjusting the welding process parameters on one hand, but is more dependent on the welding technique and the operation skill of an operator. The existing welding process of plates relates to four positions of flat welding, vertical welding, transverse welding and overhead welding, an operator just in contact with the welding can master the welding skills and skills of skillful flat welding, vertical welding, transverse welding, overhead welding and the like through a large amount of exercises, and in addition, the experienced operator cannot visually perform demonstration teaching such as the angle between a welding rod and a workpiece during welding, the speed and the dwell time of welding to the two sides and the middle of the workpiece, the forward speed of the welding rod and the like. Brings great invariance to learners.
At present, there is no precedent for guiding welding at positions such as flat welding, vertical welding, horizontal welding and overhead welding by laser. Furthermore, current welding practice devices are not capable of arbitrary angle changes or angle inaccuracies.
Therefore, it is an urgent need to provide a digital intelligent laser guiding welding method capable of accurately guiding.
Disclosure of Invention
In view of the above, the present invention provides a digital intelligent laser-guided welding method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a digital intelligent laser guide welding method comprises the following steps:
(1) pre-adjusting parameters of a laser priming layer, a filling layer and a cover layer through PANGOLIN LASER SYSTEMS software;
(2) adjusting parameters of a welding machine, wire feeding and air feeding of a welding gun;
(3) and (3) starting the laser transmitter by using a remote controller, enabling the laser transmitter to work according to preset parameters of software, operating by using a welding gun according to relevant parameters such as a path, an angle, a stay time stroke, a walking amplitude and speed and the like guided by laser, and sequentially welding the priming layer, the filling layer and the cover surface layer, namely realizing digital intelligent laser-guided welding.
Further, the laser motion parameters of the priming layer in the step (1) are as follows: the walking path is zigzag, triangular, circular or crescent, the walking speed is 15mc/min, the walking amplitude is 1.8mm, the retention time of the edge of the groove is 0.6S, and the stroke is 8 mm.
Furthermore, the laser motion parameters of the filling layer in the step (1) are as follows: the walking path is in a sawtooth shape, a triangular shape, a circular ring shape or a crescent shape, the walking speed is 19mc/min, the walking amplitude is 1.3mm, the retention time of the edge of the groove is 0.8S, and the stroke is 20 mm.
Furthermore, the laser motion parameters of the cover surface layer in the step (1) are as follows: the walking path is in a sawtooth shape, a triangular shape, a circular ring shape or a crescent shape, the walking speed is 22mc/min, the walking amplitude is 1mm, the retention time of the edge of the groove is 0.3S, and the stroke is 22 mm.
Further, in the step (2), the welding parameters of the welding gun priming layer are as follows: the welding current is 48A, the welding voltage is 16V, the wire feeding speed is 30in/min, the gas flow is 12L/min, the welding layer is 1/3, and the welding angle is as follows: 75 degrees, and the diameter of the welding wire is 1.0 mm.
Furthermore, in the step (2), the welding parameters of the welding gun filling layer are as follows: the welding current is 56A, the welding voltage is 19V, the wire feeding speed is 42in/min, the gas flow is 12L/min, the welding layer is 2/3, the welding angle is 75 degrees, and the diameter of the welding wire is 1.0 mm.
Furthermore, in the step (2), the welding parameters of the welding gun cover surface layer are as follows: the welding current is 50A, the welding voltage is 18.2V, the wire feeding speed is 38in/min, the gas flow is 12L/min, the welding layer path is 3/3, the welding angle is 80 degrees, and the diameter of the welding wire is 1.0 mm.
Further, the bottom layer, the filling layer and the cover layerThe gas in the welding parameters is argon-rich mixed gas which has the composition of 20 percent CO2+80％Ar。
Further, the step (3) further comprises: the laser transmitter is paused, terminated and replaced by a remote controller during the welding process.
The invention has the beneficial effects that: the method can be used for guiding the practice of position welding skills such as horizontal welding, vertical welding, transverse welding, overhead welding and the like, and the laser device is used for projecting zigzag, triangular, circular, crescent and other patterns to guide different bar conveying methods, welding angles, welding speeds, retention time and other welding methods.
The method has the advantages that the height is adjustable, an operator can adjust the height of the device according to the height of the operator, the angle is controllable, and the operator can accurately adjust the angle of a welding plane through the mutual matching of the angle control handle and the angle hole according to the requirements of different angles, so that multi-angle welding such as flat welding, vertical welding, overhead welding, transverse welding and the like is realized.
In the method, after the outer shell is fully paved with the welding line, the welding can be continued on the basis of the original welding line through the laser guide, in addition, the welding outer shell is connected with the inner shell through the bolt, the replacement is realized, the material is saved, the welding inner shell is made of copper material, and the heat dissipation block avoids the influence on the welding line caused by the overheating of the workpiece.
Drawings
FIG. 1 is a schematic diagram of the movement of a zigzag digital intelligent laser guided weld of the present invention;
in the drawings, the reference numerals are as follows: 1-arcing position, 2, 3, 4, 5-groove edge position, 6-arc-closing position and 7-arc-closing direction.
FIG. 2 is a schematic view of a vertical single-side welding and double-side forming welding method in embodiment 1 of the present invention;
fig. 3 is a schematic view of a pipe-pipe all-position single-side welding and double-side forming welding method in embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Digital intelligent laser guiding welding method (vertical welding single-side welding double-side forming)
(1) Q345 steel with the thickness of 12mm is used as a base material and a plate material, and J507 is used as a welding material; removing rust, oil stain, water and the like on the surfaces of two sides of the V-shaped groove at the welding position within the range of 20mm respectively to expose the metal luster of the base metal and the plate; the butt gap between the base material and the plate is 3-3.5 mm, the truncated edge is 1-2mm, the two surfaces are flush, the length of the butt positioning welding spot is 10mm, and the distance between the butt positioning welding spots is 150 mm;
simultaneously, drying the welding rod for 1-2h at 350 ℃;
(2) pre-adjusting parameters of a laser priming layer, a filling layer and a cover layer through PANGOLIN LASER SYSTEMS software;
the laser motion parameters of the bottom layer are as follows: the walking path is zigzag and crescent, the walking speed is 15mc/min, the walking amplitude is 1.8mm, the retention time of the edge of the groove is 0.6S, and the stroke is 8 mm.
The laser motion parameters of the filling layer are as follows: the walking path is in a sawtooth shape and a crescent shape, the walking speed is 19mc/min, the walking amplitude is 1.3mm, the retention time of the edge of the groove is 0.8S, and the stroke is 20 mm.
The laser motion parameters of the cover layer are as follows: the walking path is in a sawtooth shape and a crescent shape, the walking speed is 22mc/min, the walking amplitude is 1mm, the retention time of the edge of the groove is 0.3S, and the stroke is 22mm
(3) Adjusting parameters of a welding machine, wire feeding and air feeding of a welding gun;
the SMAW welding method is adopted, and welding parameters of a welding gun priming coat are as follows: the welding current is 48A direct current reverse connection current, the welding voltage is 16V, the wire feeding speed is 30in/min, and the argon-rich mixed gas consists of 20 percent CO2+ 80% Ar, gas flow of 12L/min, welding track of 1/3, welding angle: 75 degrees, and the diameter of the welding wire is 1.0 mm.
Adopting SMAW welding method, the welding parameters of the welding gun filling layer are as follows: the welding current is 56A direct current reverse connection current, the welding voltage is 19V, the wire feeding speed is 42in/min, and the argon-rich mixed gas consists of 20 percent CO2+ 80% Ar, gas flow of 12L/min, welding layer path of 2/3, welding angle of 75 degrees, and diameter of welding wire of 1.0 mm.
By adopting the SMAW welding method, the welding parameters of the welding gun cover surface layer are as follows: the welding current is 50A direct current reverse current, the welding voltage is 18.2V, the wire feeding speed is 38in/min, and the argon-rich mixed gas consists of 20 percent CO2+ 80% Ar, gas flow of 12L/min, welding layer path of 3/3, welding angle of 80 degrees, and diameter of welding wire of 1.0 mm.
(4) And (3) starting the laser transmitter by using a remote controller, enabling the laser transmitter to work according to preset parameters of software, operating by using a welding gun according to relevant parameters such as a path, an angle, a stay time stroke, a walking amplitude and speed and the like guided by laser, and sequentially welding the priming layer, the filling layer and the cover surface layer, namely realizing digital intelligent laser-guided welding.
Example 2
Digital intelligent laser guiding welding method (pipe-pipe all-position single-side welding double-side forming)
(1) 2507 steel with the thickness of 8mm is used as a base material and a plate, and E2594 is used as a welding wire; removing rust, oil stain, water and the like on the surfaces of two sides of the V-shaped groove at the welding position within the range of 20mm respectively to expose the metal luster of the base metal and the plate; the butt gap between the base metal and the plate is 3-3.5 mm, the truncated edge is 1-2mm, the two surfaces are flush, the length of the butt welding point is 10mm, and the distance is 150 mm;
simultaneously, drying the welding rod for 1-2h at 350 ℃;
(2) pre-adjusting parameters of a laser priming layer, a filling layer and a cover layer through PANGOLIN LASER SYSTEMS software;
the laser motion parameters of the bottom layer are as follows: the walking path is in a positive crescent shape and a negative crescent shape, the walking speed is 15mc/min, the walking amplitude is 1.8mm, the retention time of the edge of the groove is 0.6S, and the stroke is 8 mm.
The laser motion parameters of the filling layer are as follows: the walking path is in a positive crescent shape and a negative crescent shape, the walking speed is 19mc/min, the walking amplitude is 1.3mm, the retention time of the edge of the groove is 0.8S, and the stroke is 20 mm.
The laser motion parameters of the cover layer are as follows: the walking path is in a positive crescent shape and a negative crescent shape, the walking speed is 22mc/min, the walking amplitude is 1mm, the retention time of the edge of the groove is 0.3S, and the stroke is 22mm
(3) Adjusting parameters of a welding machine, wire feeding and air feeding of a welding gun;
adopting TiG welding method, the welding parameters of welding gun priming layer are: the welding current is 48A direct current reverse connection current, the welding voltage is 16V, the wire feeding speed is 30in/min, and the argon-rich mixed gas consists of 20 percent CO2+ 80% Ar, gas flow of 12L/min, welding layer path of 1/3, welding angle: 75 degrees, and the diameter of the welding wire is 1.0 mm.
Adopting SMAW welding method, the welding parameters of the welding gun filling layer are as follows: the welding current is 56A direct current reverse connection current, the welding voltage is 19V, the wire feeding speed is 42in/min, and the argon-rich mixed gas consists of 20 percent CO2+ 80% Ar, gas flow of 12L/min, welding layer path of 2/3, welding angle of 75 degrees, and diameter of welding wire of 1.0 mm.
By adopting the SMAW welding method, the welding parameters of the welding gun cover surface layer are as follows: the welding current is 50A direct current reverse current, the welding voltage is 18.2V, the wire feeding speed is 38in/min, and the argon-rich mixed gas consists of 20 percent CO2+ 80% Ar, gas flow of 12L/min, welding layer path of 3/3, welding angle of 80 degrees, and diameter of welding wire of 1.0 mm.
(4) And (3) starting the laser transmitter by using a remote controller, enabling the laser transmitter to work according to preset parameters of software, operating by using a welding gun according to relevant parameters such as a path, an angle, a stay time stroke, a walking amplitude and speed and the like guided by laser, and sequentially welding the priming layer, the filling layer and the cover surface layer, namely realizing digital intelligent laser-guided welding.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (8)

1. A digital intelligent laser guide welding method is characterized by comprising the following steps:
(1) pre-adjusting parameters of a laser priming layer, a filling layer and a cover layer through software;
(2) adjusting parameters of a welding machine, wire feeding and air feeding of a welding gun;
(3) and (3) starting a laser transmitter by using a remote controller, enabling the laser transmitter to work according to preset parameters of software, operating by using a welding gun according to the path, the angle, the stay time stroke, the walking amplitude and the speed of laser guide, and sequentially welding the priming layer, the filling layer and the cover layer, namely realizing digital intelligent laser guide welding.
2. The digital intelligent laser-guided welding method according to claim 1, wherein the laser motion parameters of the base layer in step (1) are as follows: the walking path is zigzag, triangular, circular or crescent, the walking speed is 15mc/min, the walking amplitude is 1.8mm, the retention time of the edge of the groove is 0.6S, and the stroke is 8 mm.
3. The method according to claim 1, wherein the laser motion parameters of the filling layer in step (1) are as follows: the walking path is in a sawtooth shape, a triangular shape, a circular ring shape or a crescent shape, the walking speed is 19mc/min, the walking amplitude is 1.3mm, the retention time of the edge of the groove is 0.8S, and the stroke is 20 mm.
4. The method of claim 1, wherein the laser motion parameters of the facing layer in step (1) are: the walking path is in a sawtooth shape, a triangular shape, a circular ring shape or a crescent shape, the walking speed is 22mc/min, the walking amplitude is 1mm, the retention time of the edge of the groove is 0.3S, and the stroke is 22 mm.
5. The digital intelligent laser-guided welding method according to claim 1, wherein the welding parameters of the welding gun primer layer in the step (2) are as follows: the welding current is 48A, the welding voltage is 16V, the wire feeding speed is 30in/min, the gas flow is 12L/min, the welding layer is 1/3, and the welding angle is as follows: 75 degrees, and the diameter of the welding wire is 1.0 mm.
6. The method according to claim 1, wherein the welding parameters of the welding gun filling layer in the step (2) are as follows: the welding current is 56A, the welding voltage is 19V, the wire feeding speed is 42in/min, the gas flow is 12L/min, the welding layer is 2/3, the welding angle is 75 degrees, and the diameter of the welding wire is 1.0 mm.
7. The digital intelligent laser-guided welding method according to claim 1, wherein the welding parameters of the welding gun cover layer in the step (2) are as follows: the welding current is 50A, the welding voltage is 18.2V, the wire feeding speed is 38in/min, the gas flow is 12L/min, the welding layer path is 3/3, the welding angle is 80 degrees, and the diameter of the welding wire is 1.0 mm.
8. The method of claim 1, wherein step (3) further comprises: the laser transmitter is paused, terminated and replaced by a remote controller during the welding process.
CN202210324579.1A 2022-03-29 2022-03-29 Digital intelligent laser guide welding method Pending CN114505562A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115922087A (en) * 2023-03-15 2023-04-07 泉州定飞反光材料有限责任公司 Laser welding device for surface layer of reflective material die and using method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115922087A (en) * 2023-03-15 2023-04-07 泉州定飞反光材料有限责任公司 Laser welding device for surface layer of reflective material die and using method thereof

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