CN113664370A - Ultrasonic-assisted laser welding method for steel wheel rim - Google Patents
Ultrasonic-assisted laser welding method for steel wheel rim Download PDFInfo
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- CN113664370A CN113664370A CN202110958278.XA CN202110958278A CN113664370A CN 113664370 A CN113664370 A CN 113664370A CN 202110958278 A CN202110958278 A CN 202110958278A CN 113664370 A CN113664370 A CN 113664370A
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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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
Abstract
The invention provides an ultrasonic auxiliary laser welding method for a steel wheel rim, which comprises the following steps: (1) polishing, cleaning and rolling the steel plate to be welded; (2) placing the processed circular steel ring to be welded on a welding fixture for butt joint, clamping and fixing, wherein a gas protection device with the same radian as the steel ring is arranged on the back of a butt joint seam of the steel ring; (3) adjusting the positions of the laser beam and the ultrasonic wave; (4) welding is carried out according to set process parameters, the back of a welding seam is completely melted through, the formation of two sides of single-side welding is ensured, and inert gas is introduced in the welding process to carry out molten pool back protection. The welding method can improve the peak temperature of a molten pool in the welding process, reduce the laser power in the welding process, reduce the defect of air holes in a welding line and obtain the steel wheel rim welding joint with good forming and higher elongation.
Description
Technical Field
The invention relates to an ultrasonic auxiliary laser welding method for a steel wheel rim, and belongs to the technical field of wheel welding manufacturing.
Background
The wheel is one of the most important parts of the automobile, has the functions of supporting the weight of the automobile body and transmitting power, and has important significance on the safety and the comfort during the driving of the automobile. The wheels used in the current production are mainly divided into aluminum wheels and steel wheels. Today, domestic passenger cars mostly use aluminum wheels, with a percentage of about 70%, while in commercial vehicles, approximately 70% use steel wheels. Compared with an aluminum wheel, the steel wheel has the advantages of high strength, good toughness, strong durability and the like, and the application range is still very wide. Because the failure part of the steel wheel is mainly positioned in a welding area or near the welding area, how to obtain a high-quality welding joint becomes a considerable problem for improving the safety and reliability of the whole vehicle. Therefore, it is particularly critical to explore more effective welding methods and processes for wheel steel.
The welding technology mainly applied in the early stage of wheel production is wheel synthetic arc welding, and the development of wheel synthetic arc welding has undergone three stages, mainly manual arc welding, submerged arc automatic welding and carbon dioxide gas shielded welding, respectively. Since flash butt welding has the advantages of high speed, high efficiency, no need of welding materials and protective gas, high joint performance, wide variety of weldable materials and the like, the flash butt welding is still an important method for welding rims until now, and the welding quality and the production capacity of wheels in China are greatly improved. Although the wheel rim welding technology in China has been greatly developed, the flash butt welding has the defects of more material consumption, larger smoke and splash generation, inconvenient control, larger mutual influence of all welding parameters and the like in the welding process, and along with the rapid development of the laser welding technology in recent years, the high-power laser welding is applied in large scale in the aspect of automobile production, and the welding of the wheel rim by adopting the high-power laser gradually draws attention. The high-power laser welding has the advantages of high energy density, low heat input, small welding deformation, high processing flexibility and the like, has good development prospect in the field of wheel steel welding, and is the development direction of wheel steel welding manufacture in the future. However, due to severe overheating in the process of laser welding of the wheel steel, a large amount of martensite is formed at the welding joint, the elongation at the joint is obviously reduced compared with that of a base material, the defects of air holes and the like easily occur in a welding seam area, and the mechanical property of the joint is reduced. In addition, the welding cost is high due to the high price of the high-power laser, which is a disadvantage of the prior art.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the ultrasonic-assisted laser welding method for the steel wheel rim, which can improve the peak temperature of a molten pool, weld a thicker steel wheel rim by adopting smaller laser heat input, obtain a welding joint with refined grains and no pore defects and realize high-quality welding manufacture of the steel wheel rim.
The scheme is realized by the following technical measures: an ultrasonic-assisted laser welding method for a steel wheel rim comprises the following steps:
(1) polishing, cleaning and rolling the steel plate to be welded;
(2) placing the processed circular steel ring to be welded on a welding fixture for butt joint, clamping and fixing, wherein a gas protection device with the same radian as the steel ring is arranged on the back of a butt joint seam of the steel ring;
(3) adjusting the position of the laser beam and the ultrasonic wave action:
the laser device is used as a welding heat source, and laser focusing of a laser head in the laser device is that a circular light spot is irradiated at the middle position of the butt joint seam of the steel ring;
the two sets of ultrasonic additional devices are symmetrically distributed and act on two sides of the steel ring butt seam, the center distance between the circular light spot and the ultrasonic additional devices is 40-150 mm, and the center connecting line of the ultrasonic additional devices and the circular light spot is perpendicular to the steel ring butt seam;
2s before the laser is turned on, an ultrasonic additional device is turned on in advance, and in the welding process, the ultrasonic wave completely acts on a welding area;
in the welding process, the two sets of ultrasonic additional devices and the laser head move at the same speed along the welding direction, the steel ring and the welding fixture are kept still, or the two sets of ultrasonic additional devices and the laser head are kept still, and the steel ring and the welding fixture move at the same speed along the direction opposite to the welding direction; the steel rings on the two sides are melted simultaneously in the welding process, and the melting amount is the same;
(4) welding is carried out according to set process parameters, the back of a welding seam is completely melted through, the formation of two sides of single-side welding is ensured, and inert gas is introduced in the welding process to carry out molten pool back protection.
Preferably, the steel plate is medium-carbon high-quality non-alloy steel, low-alloy steel or hot forming steel, and the thickness of the steel plate is 2-15 mm.
Preferably, the laser is a continuous fiber laser, a YAG laser or a disc laser, the power of the laser is in direct proportion to the thickness of the steel ring and the welding speed, the power of the laser is 3.0-15 kW, and the diameter of the circular light spot is 0.2-1.5 mm; the welding speed of the laser is 0.5-8.0 m/min.
Preferably, the power of an ultrasonic generator in the ultrasonic additional device is 0.5-1.5 kW, and the ultrasonic frequency is 19-23 kHz; the pressure of an ultrasonic amplitude transformer in the ultrasonic additional device is 100-200N.
Preferably, the gas protection device comprises an arc copper base plate with the same radian as the steel ring, the top and the bottom of the middle position of the arc copper base plate are respectively provided with an upper groove and a lower groove, the center of the upper groove, the center of the lower groove and the center of the butt seam of the steel ring are positioned on the same radial line of the steel ring, the two ends of the upper groove are communicated with the two ends of the steel ring, a space is reserved between the two ends of the lower groove and the two ends of the steel ring, one end of the arc copper base plate is provided with an air inlet communicated with the lower groove, the arc copper base plate between the upper groove and the lower groove is provided with a plurality of air outlets, the upper groove and the lower groove are communicated through the air outlets, and inert gas enters the lower groove through the air inlet and then is blown out from the air outlets to enter the upper groove.
Preferably, the inert gas is argon with the purity equal to or higher than 99.99%, the flow rate of the inert gas is 10-25L/min, and the flow rate of the inert gas is preferably 15L/min.
Preferably, the thickness of the arc-shaped copper gasket is 20mm, and the depth and the width of the upper groove and the lower groove are 5mm and 8mm respectively.
Preferably, the steel plate is 22MnB5 hot-formed steel, the thickness of the steel plate is 5mm, the steel plate is immersed in acid liquor in an in-tank immersion manner before welding, rust and oxide scale are removed, the pickled steel plate is washed with water, acid liquor and residues on the surface of the steel plate are cleaned, the washed steel plate is passivated in an in-tank immersion manner, and an oxide film is formed on the surface of the steel plate.
Preferably, the power of the laser is 4kW, and the diameter of the circular light spot is 0.6 mm; the welding speed of the laser is 1.5m/min, and the center distance between the circular light spot and the ultrasonic additional device is 100 mm.
Preferably, the power of an ultrasonic generator in the ultrasonic additional device is 0.6kW, and the ultrasonic frequency is 22 kHz; the pressure of the ultrasonic horn in the ultrasonic attachment device was 150N.
The invention has the beneficial effects that: in the ultrasonic-assisted laser welding method for the steel wheel rim, ultrasonic vibration acts on two sides of a butt joint seam of a steel ring, and a laser provides heat to melt the steel ring 1; the two sets of ultrasonic additional devices and the laser head move at the same speed along the welding direction, the steel ring and the welding clamp are kept still, or the two sets of ultrasonic additional devices and the laser head are kept still, the steel ring and the welding clamp move at the same speed along the direction opposite to the welding direction, welding heat input and ultrasonic vibration energy are controlled by adjusting welding process parameters and ultrasonic process parameters, the peak temperature of a molten pool is improved, a thicker steel wheel rim can be welded by adopting smaller laser heat input, a welding joint with refined grains and no pore defect is obtained, and high-quality welding manufacturing of the steel wheel rim is realized. Therefore, the welding method can improve the peak temperature of a molten pool in the welding process, reduce the laser power in the welding process, reduce the defect of air holes in a welding line and obtain the steel wheel rim welding joint with good forming and higher elongation. Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
Fig. 1 is a schematic view of a clamping structure during welding of a steel ring in the specific embodiment of the invention.
Fig. 2 is a schematic partial perspective view of a steel ring according to an embodiment of the present invention.
Fig. 3 is a schematic top view of fig. 2.
Fig. 4 is a schematic perspective view of the gas protection device.
In the figure, 1-steel ring, 2-welding fixture, 3-ultrasonic additional device, 4-laser head, 5-arc copper backing plate, 6-upper groove, 7-air outlet hole, 8-air inlet hole, 9-circular light spot, 10-central connecting line of ultrasonic additional device and circular light spot, 11-welding line, 12-welding direction, 13-lower groove, 14-butt joint, and d 1-central distance between circular light spot and ultrasonic additional device.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the following explains the present solution by way of specific embodiments and with reference to the accompanying drawings.
An ultrasonic-assisted laser welding method for a steel wheel rim comprises the following steps.
(1) And (4) polishing, cleaning and rolling the steel plate to be welded.
The steel plate is medium-carbon high-quality non-alloy steel, low-alloy steel or hot forming steel, the thickness of the steel plate is 2-15 mm, the steel plate is preferably made of 22MnB5 hot forming steel, the thickness of the steel plate is preferably 5mm, the steel plate is immersed into acid liquor in an in-tank immersion mode before welding, rust and oxide skin are removed, the steel plate after pickling is washed with water, acid liquor and residues on the surface of the steel plate are cleaned, the steel plate after washing is passivated in an in-tank immersion mode, and an oxide film is formed on the surface of the steel plate.
(2) The processed circular steel ring 1 to be welded is placed on the welding fixture 2 for butt joint, clamping and fixing, and the back of a butt joint seam 14 of the steel ring 1 is provided with a gas protection device with the same radian as that of the steel ring 1.
The gas protection device includes arc copper backing plate 5 the same with 1 radian of steel ring, the thickness of arc copper backing plate 5 is 20mm, slot 6 and lower slot 13 have been seted up respectively to the top and the bottom of 5 intermediate positions of arc copper backing plate, go up the center of slot 6, the center of lower slot 13 and the center of steel ring butt joint 14 and be located steel ring 1's same footpath line, the both ends of going up slot 6 link up to steel ring 1's both ends, make inert gas can effectively protect the molten bath back effectively, leave the interval between the both ends of slot 13 and steel ring 1's both ends down, prevent that inert gas from escaping, the degree of depth of going up slot 6 and lower slot 13 is 5mm, the width is 8 mm. An air inlet hole 8 communicated with the lower groove 13 is formed in one end of the arc-shaped copper backing plate 5, a plurality of air outlet holes 7 are formed in the arc-shaped copper backing plate 5 between the upper groove 6 and the lower groove 13, the upper groove 6 is communicated with the lower groove 13 through the air outlet holes 7, and inert gas enters the lower groove 13 through the air inlet hole 8 and then is uniformly blown out of the air outlet holes 7 to enter the upper groove 6. The inert gas is argon with the purity equal to or higher than 99.99%, the flow rate of the inert gas is 10-25L/min, and the preferred flow rate of the inert gas is 15L/min. After the gas protection device with the structure is adopted, the protection range of the gas can effectively cover the back of the welding pool of the ultrasonic auxiliary laser.
(3) The positions of the laser beam and the ultrasonic wave action are adjusted.
The laser is used as a welding heat source, and laser of a laser head 4 in the laser is focused into a circular light spot 9 to irradiate the middle position of the steel ring butt joint seam 14, so that the steel rings 1 on two sides of the butt joint seam 14 are simultaneously melted. The laser is a continuous fiber laser, a YAG laser or a disc laser, the power of the laser is in direct proportion to the thickness of the steel ring 1 and the welding speed, the power of the laser is 3.0-15 kW, the power can ensure that the steel ring 1 is melted, the power of the laser is preferably 4kW, the diameter of the circular light spot 9 is 0.2-1.5 mm, and the diameter of the circular light spot 9 is preferably 0.6 mm; the welding speed of the laser is 0.5-8.0 m/min, and the preferred welding speed of the laser is 1.5 m/min. The heat input and the temperature field distribution at the joint of the steel ring 1 are regulated and controlled by controlling the power of the laser, the steel ring 1 at two sides of the butt joint 14 is simultaneously melted and the melting amount is the same in the welding process, and finally the high-quality ultrasonic auxiliary laser welding joint of the steel wheel rim is obtained.
The two sets of ultrasonic additional devices 3 are used as auxiliary devices and symmetrically distributed to act on two sides of the steel ring butt seam 14, and the central connecting line of the ultrasonic additional devices 3 and the circular light spot 9 is perpendicular to the steel ring butt seam 14. The center distance between the circular light spot 9 and the ultrasonic additional device 3 is 40-150 mm, and preferably the center distance between the circular light spot 9 and the ultrasonic additional device 3 is 100 mm. The distance between the circular light spot 9 and the ultrasonic additional device 3 influences the stability of the welding process, and if the distance between the circular light spot 9 and the ultrasonic additional device 3 is too small, the working stability of the ultrasonic additional device 3 is influenced by high temperature in the welding process, and even the ultrasonic additional device 3 is damaged; if the distance between the circular light spot 9 and the ultrasonic additional device 3 is too large, the ultrasonic waves cannot be uniformly distributed in the welding area, and the welding penetration and the overall quality of the welding seam 11 are affected. When the center distance between the circular light spot 9 and the ultrasonic additional device 3 is 40-150 mm, the welding process is stable, the crystal grains of the formed welding line 11 are fine, and the overall appearance is good.
Under the condition that the steel ring 1 is molten, the ultrasonic power acting on two sides of a welding area is moderate, and the excessive ultrasonic power can cause excessive heat input of a molten pool and unstable flow of the molten pool, so that the mechanical property of a welding joint is reduced; if the ultrasonic power is too low, the ultrasonic cannot be uniformly distributed in the welding area, and the welding penetration and the overall quality of the welding seam 11 are affected. The power of an ultrasonic generator in the ultrasonic additional device 3 is 0.5-1.5 kW, the ultrasonic frequency is 19-23 kHz, and preferably the power of the ultrasonic generator in the ultrasonic additional device 3 is 0.6kW, and the ultrasonic frequency is 22 kHz; the pressure of the ultrasonic horn in the ultrasonic additional device 3 is 100-200N, and preferably the pressure of the ultrasonic horn in the ultrasonic additional device 3 is 150N.
The ultrasonic additional device 3 is started in advance 2s before the laser is started to ensure that the ultrasonic wave completely acts on a welding area in the welding process;
in the welding process, two sets of ultrasonic additional devices 3 and laser heads 4 move at the same speed along the welding direction 12, the steel ring 1 and the welding fixture 2 are kept still, or the two sets of ultrasonic additional devices 3 and the laser heads 4 are kept still, and the steel ring 1 and the welding fixture 2 move at the same speed along the direction opposite to the welding direction 12; and the steel rings 1 on the two sides are simultaneously melted in the welding process, and the melting amount is the same.
(4) Welding is carried out according to set process parameters, the back of a welding seam 11 is completely melted through, the formation of single-side welding and double-side welding is guaranteed, inert gas is introduced in the welding process to carry out molten pool back protection, and the protection range of the gas can effectively cover the back of a welding molten pool of the ultrasonic auxiliary laser and effectively protect the back of the molten pool.
In the ultrasonic-assisted laser welding method for the steel wheel rim, ultrasonic vibration acts on two sides of a steel ring butt joint seam 14, and a laser provides heat to melt a steel ring 1; the two sets of ultrasonic additional devices 3 and the laser head 4 move at the same speed along the welding direction 12, the steel ring 1 and the welding clamp 2 are kept still, or the two sets of ultrasonic additional devices 3 and the laser head 4 are kept still, the steel ring 1 and the welding clamp 2 move at the same speed along the direction opposite to the welding direction 12, welding heat input and ultrasonic vibration energy are controlled by adjusting welding process parameters and ultrasonic process parameters, the peak temperature of a molten pool is improved, a thicker steel rim can be welded by adopting smaller laser heat input, a welding joint with refined grains and no pore defect is obtained, and high-quality welding manufacturing of the steel wheel rim is realized.
Technical features not described in the present invention can be implemented by the prior art, and are not described in detail herein. The present invention is not limited to the above-described embodiments, and variations, modifications, additions and substitutions which are within the spirit of the invention and the scope of the invention may be made by those of ordinary skill in the art are also within the scope of the invention.
Claims (10)
1. An ultrasonic-assisted laser welding method for a steel wheel rim is characterized by comprising the following steps: it comprises the following steps:
(1) polishing, cleaning and rolling the steel plate to be welded;
(2) placing the processed circular steel ring to be welded on a welding fixture for butt joint, clamping and fixing, wherein a gas protection device with the same radian as the steel ring is arranged on the back of a butt joint seam of the steel ring;
(3) adjusting the position of the laser beam and the ultrasonic wave action:
the laser device is used as a welding heat source, and laser focusing of a laser head in the laser device is that a circular light spot is irradiated at the middle position of the butt joint seam of the steel ring;
the two sets of ultrasonic additional devices are symmetrically distributed and act on two sides of the steel ring butt seam, the center distance between the circular light spot and the ultrasonic additional devices is 40-150 mm, and the center connecting line of the ultrasonic additional devices and the circular light spot is perpendicular to the steel ring butt seam;
2s before the laser is turned on, an ultrasonic additional device is turned on in advance, and in the welding process, the ultrasonic wave completely acts on a welding area;
in the welding process, the two sets of ultrasonic additional devices and the laser head move at the same speed along the welding direction, the steel ring and the welding fixture are kept still, or the two sets of ultrasonic additional devices and the laser head are kept still, and the steel ring and the welding fixture move at the same speed along the direction opposite to the welding direction; the steel rings on the two sides are melted simultaneously in the welding process, and the melting amount is the same;
(4) welding is carried out according to set process parameters, the back of a welding seam is completely melted through, the formation of two sides of single-side welding is ensured, and inert gas is introduced in the welding process to carry out molten pool back protection.
2. The ultrasonic-assisted laser welding method for steel wheel rims as claimed in claim 1, wherein: the steel plate is medium-carbon high-quality non-alloy steel, low-alloy steel or hot forming steel, and the thickness of the steel plate is 2-15 mm.
3. The ultrasonic-assisted laser welding method for steel wheel rims as claimed in claim 2, wherein: the laser is a continuous fiber laser, a YAG laser or a disc laser, the power of the laser is in direct proportion to the thickness of the steel ring and the welding speed, the power of the laser is 3.0-15 kW, and the diameter of the circular light spot is 0.2-1.5 mm; the welding speed of the laser is 0.5-8.0 m/min.
4. The ultrasonic-assisted laser welding method for steel wheel rims as claimed in claim 3, wherein: the power of an ultrasonic generator in the ultrasonic additional device is 0.5-1.5 kW, and the ultrasonic frequency is 19-23 kHz; the pressure of an ultrasonic amplitude transformer in the ultrasonic additional device is 100-200N.
5. The ultrasonic-assisted laser welding method for steel wheel rims as claimed in claim 4, wherein: the gas protection device comprises an arc copper base plate with the same radian as the steel ring, an upper groove and a lower groove are formed in the top and the bottom of the middle position of the arc copper base plate respectively, the center of the upper groove, the center of the lower groove and the center of butt joint of the steel ring are located on the same radial line of the steel ring, two ends of the upper groove penetrate through two ends of the steel ring, a space is reserved between two ends of the lower groove and two ends of the steel ring, an air inlet communicated with the lower groove is formed in one end of the arc copper base plate, a plurality of air outlet holes are formed in the arc copper base plate between the upper groove and the lower groove, the upper groove and the lower groove are communicated through the air outlet holes, and inert gas enters the lower groove through the air inlet holes and then is blown out from the air outlet holes to enter the upper groove.
6. The ultrasonic-assisted laser welding method for steel wheel rims as claimed in claim 5, wherein: the inert gas is argon with the purity equal to or higher than 99.99%, the flow rate of the inert gas is 10-25L/min, and the preferred flow rate of the inert gas is 15L/min.
7. The ultrasonic-assisted laser welding method for steel wheel rims as claimed in claim 6, wherein: the thickness of the arc-shaped copper cushion plate is 20mm, the depth of the upper groove and the lower groove is 5mm, and the width of the upper groove and the lower groove is 8 mm.
8. The ultrasonic-assisted laser welding method for steel wheel rims as claimed in claim 7, wherein: the steel plate is 22MnB5 hot forming steel, the thickness of the steel plate is 5mm, the steel plate is immersed in acid liquor in an in-groove immersion mode before welding, rust and oxide skin are removed, the steel plate after pickling is washed with water, acid liquor and residues on the surface of the steel plate are cleaned, the steel plate after washing is passivated in an in-groove immersion mode, and an oxide film is formed on the surface of the steel plate.
9. The ultrasonic-assisted laser welding method for steel wheel rims as claimed in claim 8, wherein: the power of the laser is 4kW, and the diameter of the circular light spot is 0.6 mm; the welding speed of the laser is 1.5m/min, and the center distance between the circular light spot and the ultrasonic additional device is 100 mm.
10. The ultrasonic-assisted laser welding method for steel wheel rims as claimed in claim 9, wherein: the power of an ultrasonic generator in the ultrasonic additional device is 0.6kW, and the ultrasonic frequency is 22 kHz; the pressure of the ultrasonic horn in the ultrasonic attachment device was 150N.
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| CN202110958278.XA CN113664370A (en) | 2021-08-20 | 2021-08-20 | Ultrasonic-assisted laser welding method for steel wheel rim |
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| CN101603949A (en) * | 2009-07-20 | 2009-12-16 | 北京欧宁航宇检测技术有限公司 | Automatic ultrasonic scanner for welding lines of large workpieces |
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| CN103273202A (en) * | 2013-05-29 | 2013-09-04 | 常熟理工学院 | Clamp structure for welding of magnesium alloy sheet |
| CN106825964A (en) * | 2017-04-18 | 2017-06-13 | 温州大学 | A kind of ultrasonic wave argon arc welder |
| WO2017194661A1 (en) * | 2016-05-11 | 2017-11-16 | Danfoss Silicon Power Gmbh | Power electronic assembly and a low-vibration connection method |
| CN211759202U (en) * | 2019-12-30 | 2020-10-27 | 江阴市华昌不锈钢管有限公司 | Integral type welding set of stainless steel welded steel pipe |
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2021
- 2021-08-20 CN CN202110958278.XA patent/CN113664370A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603949A (en) * | 2009-07-20 | 2009-12-16 | 北京欧宁航宇检测技术有限公司 | Automatic ultrasonic scanner for welding lines of large workpieces |
| CN102854248A (en) * | 2012-09-14 | 2013-01-02 | 桂林电器科学研究院 | Ultrasonic wave detection system of thin-sheet workpiece annular weld seam |
| CN103273202A (en) * | 2013-05-29 | 2013-09-04 | 常熟理工学院 | Clamp structure for welding of magnesium alloy sheet |
| WO2017194661A1 (en) * | 2016-05-11 | 2017-11-16 | Danfoss Silicon Power Gmbh | Power electronic assembly and a low-vibration connection method |
| CN106825964A (en) * | 2017-04-18 | 2017-06-13 | 温州大学 | A kind of ultrasonic wave argon arc welder |
| CN211759202U (en) * | 2019-12-30 | 2020-10-27 | 江阴市华昌不锈钢管有限公司 | Integral type welding set of stainless steel welded steel pipe |
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