SHINHOP laser

Volkswagen is a model of applying laser welding technology, using laser welding to achieve molecular-level bonding between different steel plates, thus achieving welding integration between different steel plates. This technological advantage is significantly higher than traditional welding techniques, for example: it has no mechanical contact, does not pollute the workpiece, energy distribution is uniform during heating, the Password is large, the heat-affected zone is small, avoiding damage due to deformation from heating non-processing areas. Importantly, its weld seams are aesthetically pleasing and have high strength. By combining with data, the Internet of Things, and other technologies, it can precisely control energy output, achieving higher welding speeds and production efficiency.

It not only brings higher precision and efficiency to body processing but also significantly enhances the rigidity and strength of the body, improving the comfort, stability, and vibration noise of the vehicle.
When it comes to the application of laser welding technology in the automotive industry, the first thing that comes to mind is the Germans, who were the first to apply laser welding technology to automobiles.
Taking BMW and Volkswagen as examples, we can see that in the mid-1990s, BMW used laser welding robots to complete the first weld seam of the BMW 5 Series sedan, with a total weld seam length of 12m.
By July 2003, the total length of laser weld seams had accumulated to 1.5 million meters. In the new laser welding technology scheme, the Volkswagen Touran sedan is a good example. In this new sedan, the number of laser weld points reached 1,400, with a total weld seam length of 70m.
At the same time, Audi also adopted laser welding technology to weld the body. In the production of comfortable and aesthetically pleasing convertible cars, VW's technicians collaborated with the Austrian welding expert Fronius to develop a laser hybrid welding technology.
In the doors of high-end convertible cars, the length of the laser hybrid welding seam reached 35.7m, which is three times the length of pure laser welding seams.
Laser welding includes two types: laser hybrid welding technology and dual-focus laser welding technology. Laser welding applied to automobiles can reduce body weight, improve assembly accuracy, increase body rigidity, lower stamping and assembly costs during the manufacturing process, and it is very necessary to reduce the number of body parts while integrating them.

The Touran car is a precedent for Shanghai Volkswagen's application of laser welding system technology, with more than 10 sets of laser sources and over 30 sets of welding robots configured in the body, applying robotic laser welding and robotic laser brazing in 18 assemblies such as the body frame, side panels, front doors, rear doors, and rear covers. The Touran body has 804 laser weld seams, with a total seam length of 41,165mm. The numerous laser welding, laser brazing, and laser composite welding have greatly enhanced the overall rigidity and quality of the body.
The body structure after laser welding is more solid, reducing deformation during movement, improving driving safety and comfort, and playing a key role in reducing automobile noise.
In automobile production and assembly, laser welding technology is mainly used for body assembly, welding, and part welding.
Laser stitching welding is based on different design and performance requirements of the body during design and manufacturing, selecting steel plates of different Specifications, and completing the manufacturing of a certain part of the body through laser cutting and stitching technology, such as the front windshield frame, inner door panel, body floor, and central pillar. Laser stitching welding has benefits such as reducing the number of parts and molds, decreasing the number of spot welds, optimizing material usage, lowering part weight, reducing costs, and improving Size accuracy. It has now been adopted by many major automobile manufacturers and parts suppliers.
Laser welding is mainly used for welding the frame structure of the body, such as the welding of the roof and side body. Traditional welding methods like resistance spot welding have gradually been replaced by laser welding. With laser welding technology, the width of the joint surface between workpieces can be reduced, which not only lowers the amount of sheet metal used but also increases the rigidity of the body. Laser welding of components results in almost no deformation at the welding joints, fast welding speed, and does not require post-weld heat treatment. Currently, laser-welded components are widely used, commonly found in transmission gears, valve lifters, door hinges, etc.
Currently, abroad, Volkswagen has adopted laser welding for the roofs of brands such as Audi A6, Golf A4, and Passat. BMW and General Motors have also adopted laser welding for the top of the frame. General Motors, Toyota, Ford, BMW, Fiat, Mercedes-Benz, and Volkswagen have all adopted laser stitching plate technology. The three major American automobile companies and Germany's Mercedes-Benz have adopted laser welding for transmission components. Volkswagen, General Motors, Mercedes-Benz, and Nissan have applied laser cutting technology, while Fiat and Toyota have used laser coating for engine exhaust valves, and Volkswagen has achieved laser surface hardening treatment for engine camshafts.

Currently, more and more domestic automobile companies in China are adopting laser welding technology, thanks to the push of competition in the automotive market. Automotive laser welding technology has developed to a precision stage. In the future, combined with artificial intelligence technology, it will further enhance the quality and efficiency of automotive welding. SHINHOP Laser Technology Company is one of the important domestic automotive laser welding system equipment R&D enterprises. In recent years, the integration of automation, artificial intelligence technology, and laser systems has significantly improved the market competitiveness of equipment and the precision of welding, especially in terms of artificial intelligence, achieving complete autonomous control, energy control, cloud quality inspection, and a series of black technologies, gaining quality recognition and application in major domestic automotive industries.