Laser technology is widely used in the automotive industry, such as the use of lasers for cutting and welding of various parts such as automotive sheets and transmission gears; the use of lasers for surface treatment, such as surface hardening, surface alloying and other processes; Laser technology accurately detects the length, density and size of precision parts. The following introduces the application of fiber laser welding machine in the field of automobile manufacturing.

1. Laser welding of car body

Laser welding is mainly used for the welding of body frame structure, which has strong flexibility and maneuverability; it can weld special-shaped door panels, baffles, gears, instrument panels and other parts, and can be applied to modern high-flexibility production During the process, to meet the various needs of users, laser welding technology is used to reduce the width of the joint surface between workpieces and reduce the consumption of plates. At the same time, the strength and rigidity of the body using laser welding is much higher than that of electric welding body, which improves the impact resistance of the body It has excellent performance and fatigue resistance, and the welding seam is beautiful, eliminating the need for decoration that affects the visual effect, increasing its market competitiveness.

At the same time, unlike the traditional spot welding process, laser welding can achieve molecular bonding between two steel plates, that is, the hardness of the steel plate after welding is equivalent to that of a whole steel plate, which not only greatly improves the strength of the car body, but also improves the bonding accuracy of the car body. Huge improvements.

2. Tailored laser welding

Tailored laser welding means that in the design and manufacture of the car body, according to the different design and performance requirements of the car body, steel plates of different specifications, different thicknesses, strengths and coatings are selected and welded together by laser welding technology to complete the manufacture of a certain part of the car body, such as front and rear Door inner panels, front and rear longitudinal beams, side panels, floor panels, wheel housings, center pillars, etc. It has the characteristics of reducing the number of parts and molds, reducing the number of spot welding, optimizing the amount of materials, reducing costs and improving dimensional accuracy.

Weld characteristics of laser tailor welding:

(1) Reduce the volume of the weld area, for example, the width of the weld does not exceed 0.5~1mm;

(2) Do not increase the weld height;

(3) Little impact on stamping performance;

(4) After adding zinc to the weld, its cathodic protection function can be maintained;

(5) During the welding process, the heat-affected zone is small.

3. Welding of gears and parts

Using a laser welding equipment to process gears and other parts can achieve extremely small welding deformation, fast welding speed, and no post-weld heat treatment. Commonly used in the welding of transmission gears, valve lifters, door hinges, transmission shafts, steering shafts, pulleys, exhaust pipes, clutches, etc.

Nowadays, handheld laser welding machine is used in the production of automobile body has become a trend. Using laser welding can not only reduce the weight of the car body, improve the assembly accuracy of the car body, but also greatly strengthen the strength of the car body, providing users with higher comfort while enjoying the comfort. safety guarantee.