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Laser welding technology is Shanghai Volkswagen He mentioned several times in the car Body manufacturing technology. In Shanghai Volkswagen In the product range, laser-welded products for the body include Passat, POLO and Touran. . The laser welding length of the Passat body is about 4.1 meters, the POLO is close to 6.6 meters, and the laser welding length of the Touran body is 41 meters.
Shanghai Volkswagen regards laser welding technology as one of the selling points of its products because laser welding can greatly improve the rigidity of the body compared with traditional spot welding, and the overall structure of the body is more sturdy.
From the manufacturer's point of view, the traditional spot welding requires that the two welded parts overlap each other, which invisibly increases the consumption of steel. In addition, there is discontinuity in spot welding, and the bonding area of ​​the plate obviously has no laser welding of continuous welding, thereby reducing the rigidity of the vehicle body (relative to laser welding).
Laser welding can achieve the combination of the molecular level of the steel, and the other two steel plates are combined into a single steel plate, thereby increasing the bonding strength, eliminating the gap between the plates and avoiding friction. Laser welding also has continuity. Conventional spot welding consists of multiple solder joints that create leaks, while laser welds form welds that are strong and continuous with no leaks. Other benefits of laser welding are the ability to reduce material usage, increase dimensional accuracy, and reduce costs (previously, the idea that laser welding adds cost) is one-sided.
Applied in POLO sedan Laser welding of car body
Laser welding seam of POLO roof up to 1.7 meters
In the body structure of a POLO car, the length of laser welding is greater than Passat. The main application parts are divided into top cover and side cover, bottom plate and side wall, and door frame. The longest laser weld is the welding of the top cover to the side panels of the body, which is 1.7 meters long. Traditional spot welding has the problem of water leakage in roof welds during rainy days. Rubber seals need to be added to solve the problem of water leakage. POLO with laser welding technology eliminates the need for rubber seals and eliminates the poor quality of assembly. The leaking problem. In the process of applying laser welding, Shanghai Volkswagen also uses weld seam tracking, defect detection and other processes to ensure the accuracy and quality of welding.
POLO is the highest price among all products of its class, but POLO is also the highest in terms of technology. Under normal use, it is difficult for consumers to perceive the benefits of laser welding, but at a critical juncture of life safety, a high-tech car body can increase the weight of survival for the owner.
Photo of the accident of POLO - the application of laser welding technology largely guarantees the firmness of the car body 
Shanghai Volkswagen regards laser welding technology as one of the selling points of its products because laser welding can greatly improve the rigidity of the body compared with traditional spot welding, and the overall structure of the body is more sturdy.
From the manufacturer's point of view, the traditional spot welding requires that the two welded parts overlap each other, which invisibly increases the consumption of steel. In addition, there is discontinuity in spot welding, and the bonding area of ​​the plate obviously has no laser welding of continuous welding, thereby reducing the rigidity of the vehicle body (relative to laser welding).
Laser welding can achieve the combination of the molecular level of the steel, and the other two steel plates are combined into a single steel plate, thereby increasing the bonding strength, eliminating the gap between the plates and avoiding friction. Laser welding also has continuity. Conventional spot welding consists of multiple solder joints that create leaks, while laser welds form welds that are strong and continuous with no leaks. Other benefits of laser welding are the ability to reduce material usage, increase dimensional accuracy, and reduce costs (previously, the idea that laser welding adds cost) is one-sided.
In the body structure of a POLO car, the length of laser welding is greater than Passat. The main application parts are divided into top cover and side cover, bottom plate and side wall, and door frame. The longest laser weld is the welding of the top cover to the side panels of the body, which is 1.7 meters long. Traditional spot welding has the problem of water leakage in roof welds during rainy days. Rubber seals need to be added to solve the problem of water leakage. POLO with laser welding technology eliminates the need for rubber seals and eliminates the poor quality of assembly. The leaking problem. In the process of applying laser welding, Shanghai Volkswagen also uses weld seam tracking, defect detection and other processes to ensure the accuracy and quality of welding.
POLO is the highest price among all products of its class, but POLO is also the highest in terms of technology. Under normal use, it is difficult for consumers to perceive the benefits of laser welding, but at a critical juncture of life safety, a high-tech car body can increase the weight of survival for the owner.
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