Laser welding machine in the automobile body welding plate application
In the body design and manufacturing, many parts of the manufacturing are used in different specifications of the steel plate welding formation, in the specific production, welding of the steel plate to be used according to the body design and performance requirements of the different choices, and then the use of laser welding technology to complete the cutting, splicing and other welding operations. Laser welding process is widely used in the body of the production of manufacturing, has been in Mercedes-Benz, Toyota, BMW and other major global automobile manufacturers in the production of applications. This welding technology is also used in more and more parts of the car body, common welding plate parts mainly include luggage compartment plate, door panels, front wheel cover, front longitudinal beam, side panels, center column, bumper, front floor, beam wheel cover and so on.
Body laser welding
In the manufacture of automotive parts, there are a lot of body components have been stamped or cut to shape, these components need to use welding technology to become a whole assembly, laser group welding technology is the key technology for processing body-in-white subassemblies or assemblies. Generally speaking, firstly, two pairs of body components are welded together, and then multiple pieces are welded together for the previously completed components, which are gradually welded into body-in-white subassemblies, and different subassemblies are assembled to form an assembly through total assembly. Laser group welding technology can be used in different production scenarios such as high volume, low volume and new prototype production. However, this group welding technology requires a large investment in equipment in the early stage, the use of the process also requires high maintenance costs, and for the use of the conditions of the relatively harsh requirements, but the use of this technology to achieve high-precision welding, welded automotive assembly is not easy to deformation of the parts, the overall strength of the welded structure is high, and the stiffness of the body assembly is also a significant increase in the automotive field by the world's major automobile manufacturers are widely used. In the automotive field, it is widely used by the world's major automobile manufacturers. Currently in the automobile manufacturing, the body of the laser welding content mainly includes assembly welding, side and roof welding and subsequent welding.
Application of laser welding in typical automotive components
Intake and exhaust valve
Automobile intake and exhaust valve of the high temperature of the working environment, while carrying a large dynamic load, in the actual operation, the need to maintain a high speed to ensure that the continuous movement of the state, the movement time required to be accurate to the scope of milliseconds. However, it should be noted that its operating state is susceptible to engine combustion efficiency, exhaust emissions and many other performance effects, so it must also meet the light weight, high performance strength and other related requirements. Therefore, in the design and manufacture of the valve is generally set into a cavity state, thereby reducing the overall quality of the valve parts, and in its internal filling of sodium metal as a coolant to resist the high temperature in the work, so in the production of the general use of laser welding technology for the manufacture of only laser welding technology to ensure that the manufacture of the valve to achieve high strength.
Automobile clutch
Automobile operation, need to control the automobile clutch to achieve the engine power transmission, and whether the transmission of the cut-off or continuous connection can be realized, specifically in a kind of rotary dynamic completed. Therefore, it is necessary to consider the cushioning force during operation when designing and manufacturing. Usually the main structure of the automotive clutch components by two pieces of outer shell and a group of coil springs, where the shell specific forging technology to implement the processing, and finally in the use of laser welding technology will be two pieces of outer shell sealing welded into a whole [6]. Application of laser welding technology in the clutch production can meet the requirements of the clutch high strength mechanical properties, to better protect the use of the clutch effect.
Bumper
The use of laser welding production and manufacturing of the front bumper can also achieve better performance, such as the use of dual-phase steel plate and low-carbon galvanized steel production and manufacturing of the bumper, you can use the laser welding technology to weld the different materials of the steel plate into a flat plate, and then use the stamping process to turn the flat plate into a bumper with corrugated, this process of production and manufacturing of the bumper can guarantee the lightweight and high strength of the bumper, in practical use, both to In actual use, it can not only reduce the quality of automobile, reduce the energy consumption of automobile, but also guarantee the good anti-collision protection effect.
