Welding Technology Parameters of Thermal Conduction Welding with 250W Continuous Wave CO2 Laser
Thermal conduction welding with 250W continuous wave Co2 laser is one of the most widely used welding methods, and it is one of the important welding methods in the field of laser welding. The method is to supply an energy source by means of optical energy, so that the temperature of the surface of the workpiece reaches the plastic deformation temperature and forms a weld. At the same time, the laser power, speed, beam spot diameter and total laser power are changed reasonably to control the welding temperature and obtain qualified welds.
The 250W continuous wave CO2 laser welding technology parameters include welding speed, laser power, focal length and beam spot diameter. All these technical parameters must be properly adjusted in order to ensure the quality of thermal conduction welding with 250W continuous wave CO2 laser.
Firstly, welding speed is an important factor for obtaining qualified welds, and should be based on the material, welding plate size and the requirements of the drawing, then different speed can be done. Generally, for laser welding of thin plate, the welding speed should not be too fast, and the welding speed of 2mm thick plate should be kept within 2m/min. Secondly, by controlling the laser power and the total laser power, the temperature of the weldment can be regulated so as to obtain the qualified weld. The laser power should be set reasonably according to the reflectivity of the surface of the workpiece and the requirements of the joint. When welding, the laser power should be gradually increased and the pulse current of the laser should be stabilized. Last but not least, when welding, the focal length and beam spot diameter should also be set appropriately. The focal length determines the quality of the welding seam. Generally, the larger the laser spot, the higher the laser energy density and the better the welding effect. Therefore, the variation range of beam spot diameter is usually 0.2mm-4mm.
By adjusting the welding technology parameters of 250W continuous wave CO2 laser, high quality thermal conduction welding can be achieved. It is important to pay attention to the technological parameters when using this type of welding. If strong heat source is used, it will result in high temperature, which is likely to cause serious damage to the parts, and will even lead to bad effects such as cracking of the weldment and even blasting. Therefore, in order to get good welding performance and ensure the welding effect, it is necessary to reasonably set the parameters of laser welding.
