For small parts manufactured in automobiles, not only can the current laser technology be used for refined seamless welding, but also laser technology can be used to mark product information, which not only improves the stability and safety of the car, but also Anti-counterfeiting marks and product tracking can also be carried out on parts.
1. Laser welding
Laser welding has become one of the important methods in automobile manufacturing due to its high energy density, small deformation, narrow heat-affected zone, high welding speed, easy automatic control, and no subsequent processing. There are hundreds of parts in the body and chassis of a car. How to connect them has a direct impact on the rigidity of the vehicle body. Using laser welding, almost all metal materials of different thicknesses, brands, types and grades can be used. Connected together, while improving production efficiency and quality, it also increases the flexibility of vehicle design and material selection.
2. Laser cutting
Laser cutting is one of the commonly used laser processing methods. The types of laser cutting are divided into four types: laser vaporization cutting, laser melting cutting, laser oxygen cutting, and laser scribing and controlled fracture. Compared with traditional processing methods, laser cutting has higher cutting quality-narrow cut width, small heat-affected zone, smooth cut, fast cutting speed, strong flexibility-can cut any shape at will, wide material adaptability and other advantages. The blanking and trimming of large automobile covering parts often requires a three-dimensional laser cutting machine. In addition, the current automobile manufacturing platform is becoming more and more intense, and higher requirements are put forward for the flexibility of the production line. The use of 3D laser cutting only needs to adapt the laser processing program after the model model is changed. The tooling is simple and the construction period is greatly shortened. Compared with the use of mold manufacturing The cost has dropped significantly. In addition, there are more and more applications of high-strength steel in automobiles. After this type of steel is hot-formed, the stamping process is no longer suitable. The contour and hole cutting of this steel promotes the demand for laser cutting.
3. Laser marking
In the production of automobiles and parts, the establishment of identity is the basis of quality traceability and recall. It is very important to establish the identity of automobiles and parts through marking. Automobile marking is more and more widely used due to its high efficiency and adaptability. Laser marking is a marking method that uses high-energy-density lasers to locally irradiate the workpiece to vaporize or change the color of the surface material, thereby leaving a mark. The characteristic of laser marking is non-contact processing, which can be marked on any special-shaped surface without deformation and internal stress. Modern auto parts use a variety of materials, including metals, plastics, glass, ceramics, wood and leather, and lasers can be used to mark the surfaces of all these materials.
