Laser welding machines are mainly used for welding bodywork and auto parts in auto manufacturing.
The application of laser welding machines to auto manufacturing can reduce the weight of bodywork to achieve the objective of fuel saving. The assembling accuracy of bodywork can also be improved to increase its strength, thereby enhancing safety. Meanwhile, costs of stamping and assembly can go down and bodywork integrity can be achieved since the number of auto parts declines during the manufacturing process.
The following are the main laser welding processes applied in auto manufacturing.
Laser Fusion Welding
Laser fusion welding is a welding process in which the welding head of the laser welding machine is subjected to high temperatures and other factors to reach a molten state to weld objects, for example, auto parts. Those welded auto workpieces will be bonded together by the mixture and cooling of their molten liquid under the effect of temperature, gravity, and non-pressure. No auxiliary fluxes or fillers are needed for this type of welding because auto parts can be welded together by their own materials.
Laser fusion welding is generally applied for bodywork assembly welding and tailored blank welding in bodywork manufacturing. Assembly welding mainly includes the welding of the top cover and bodywork, the welding of pieces of bodywork, and the welding of the car door and bodywork.
Tailored blank welding is the welding of tailored blanks that are made of steel sheets with different strength, thicknesses, or coatings. It is widely applied to the welding of auto tailored blanks due to its advantages of high efficiency and high welding results.
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