Laser welded blanks technology involves cutting cold rolled steel plates of different or the same thickness, strength, and material into appropriate sizes and shapes, and then laser welding them into an ideal whole, known as laser welded blanks.
The advantages of laser welded blanks are mainly reflected in the following aspects:
a. The reduction in the number of parts, as well as the subsequent simplification of production equipment and manufacturing processes, greatly improves production efficiency and reduces vehicle manufacturing and assembly costs.
b. Due to the fact that different parts of the product are welded together through laser continuous welding process before forming, the accuracy of the product is improved, and the manufacturing and assembly tolerances of the components are greatly reduced.
c. The optimization of components through laser welding reduces weight and thus reduces fuel consumption, which is very important in the era of environmental protection.
d. Due to the fact that laser welding no longer requires reinforcing plates and no overlapping joints, the corrosion resistance of the assembly parts is greatly improved; By eliminating overlap, the corrosion resistance of components is improved, greatly reducing the use of sealing measures.
e. Through strict screening of material thickness and quality, a fundamental leap has been brought to the components in terms of material strength and impact resistance. At the same time, laser welding has optimized the structure, allowing more energy to be absorbed during the impact process, thereby improving the impact resistance of vehicle components and enhancing the passive safety of the vehicle.
f. The variability of material thickness and its reliable quality ensure that reinforcement and improvement in certain important positions can be carried out smoothly; Laser welding achieves the fullest utilization of material properties and achieves the most reasonable combination of material properties; For product designers, it increases the flexibility of product design.
g. By selectively using high-strength and thick materials in specific parts of structural components, the utilization rate of materials is greatly improved. By using layout technology in the material cutting process and laser welding, various steel plates are reasonably combined, greatly reducing the material engineering waste rate.
h. By using laser welding technology, the reasonable combination of material strength and thickness greatly improves the structural stiffness, optimizes the vibration characteristics of the vehicle, and reduces vehicle vibration and noise, thereby improving the comfort of the vehicle.
i. Laser welding provides possibilities for the production of wide body vehicles. Due to the limitation of the width of the steel mill, there is a certain limit to the width of the plates provided by the steel mill. However, with the development of the automotive industry, the demand for wide plates in automobiles is becoming increasingly urgent. Using laser welding is an effective and economical process method.