The United States was the first to introduce high-power lasers into the automotive industry. There are more than 40 laser processing stations in the Detroit area of ​​the US automotive industry center for the cutting of automotive metal parts and the welding of gears, which has shortened the car from 5 years to 2 years. year. General Motors has adopted 22 laser processing lines. Ford Motor Company of the United States uses Nd:YAG lasers to combine industrial robots to weld car bodies, which greatly reduces manufacturing costs. In 2000, the three major US auto companies already had 50% resistance points. The welding line was replaced by a laser welding line. In Japan, the successful application of laser welding on the production line has attracted worldwide attention. For example, in the manufacture of automobile bodies, a new method of laser-welding and forming a thin steel plate has been adopted, and it has been imitated by most automobile manufacturers in the world. Many famous automobile companies in the world have built special laser welding production lines: Thyssen Steel's car floor welding production line, Volkswagen's gear laser processing line, and 8 plants in the 18 factories of Mercedes-Benz. Laser processing equipment.
Laser welding is mainly used in the automotive industry for welding and splicing of blanks. In order to meet the needs of the market and customers, it is necessary to improve the body and manufacturing process, and the body value of the car accounts for about one-fifth of the total value of the car. The laser welding process can be used to improve the impact resistance and fatigue resistance of the car body. Significant improvement, improve the quality of the car. Due to the computer control, laser welding has strong flexibility and maneuverability. It can weld the special shape of door panels, baffles, gears, instrument panels and other components. It can also complete the roof and side panels, engine mounts and Assembly of components such as radiator mounts, if coupled with fiber optic transmission systems and robots, enables automated automotive assembly lines.
The ND:YAG continuous laser with 3KW or so fiber transmission, combined with the spot welding system and the fixture on the production line, can achieve the purpose of automatic welding. GM, Mercedes-Benz and so on have adopted this system in the latest models. On the production line, the laser welding system can almost meet the requirements of perfect processing, and has excellent performance in terms of efficiency, economy, safety, strength and corrosion resistance. The body and chassis of a car consist of more than 300 parts. Laser welding can weld all materials without thickness, grade, type and grade together to make parts of various shapes, greatly improving the design of the car. flexibility. The splicing of the blank is to optimize the component design based on the full analysis of the body structure, so that it can be welded by a few kinds of typical blanks, which greatly reduces the number of molds, increases the material utilization rate, and can have different strength requirements. The parts are made of blanks of different thicknesses, which can be stamped and formed at one time, which reduces the weight and improves the precision. It also greatly improves the corrosion resistance and safety performance, and the body structure is also greatly simplified. Toyota's side line production line uses splicing blank welding technology, which reduces the number of molds to four, and the material utilization rate reaches 65%. Together with other components, the cost per vehicle drops by more than 30 US dollars, greatly increasing the number of cars. The efficiency of the producer.
Laser welding technology prospects
Laser welding technology has had an impact on the traditional automotive welding process. Major auto companies have a very positive attitude towards this. The adoption of new technologies means greater competitiveness, especially in the competitive automotive industry. . Laser welding technology is the most promising application for welding aluminum, welding parts instead of castings and full body frame structure welding. Laser manufacturers should seize the business opportunity, work hard on the mobility and volume of lasers, and transmit lasers with optical fibers. Make the laser more suitable for the needs of automotive production lines. Some domestic laser product manufacturers have gradually realized this. For example, the pulsed Nd:YAG laser welding machine produced by Hubei Guangtong Photoelectric System Co., Ltd. uses fiber-optic coupling focusing, which is convenient to use, the laser head can be far away from the welding zone, and the laser performance is stable and reliable. Long life, you can also use the traditional optical traditional system, laser can be laser welding, laser cutting and drilling, multi-purpose, especially suitable for laser processing workshops and automated production lines.
In the 21st century, the automotive industry is entering a way of flexible modular production according to user requirements. Traditional processing techniques cannot meet the needs of new production methods, which provides an opportunity for large-scale application of laser welding technology, laser welding technology and other lasers. Processing technology will certainly have greater development in the automotive field and become an important processing method in the automotive industry.
Previous page
Application
· Mesh weaving.
· Tying wire in architectural site.
· Making handicrafts.
· Material of mesh and fence.
· Packing life products.
Hot-Dip Galvanized Wire,Hot Dipped Galvanized Iron Wire,Hot Dip Galvanized Steel Wire,Hot Dip Gi Wire
Shenzhou City Hongda Hardware Products Co.,Ltd , https://www.hdpvcwire.com