Any machine can break down, and laser welding equipment is no exception. Laser welding is a new type of welding, the welding of thin wall materials, precision parts, which can realize welding, butt welding, welding stack, seal welding, etc., deep wide ratio is high, the weld width is small, small heat affected zone, small deformation, welding speed, welding seam smooth, beautiful, without processing or simply processing after welding, welding quality is high, no pores, can accurate control, Small focusing spot, high positioning accuracy, easy to realize automation. So in the use of laser welding machine, there will be some fault problems, which affects the efficiency of laser welding machine. So what are the common failures of laser welding machine? What are the specific solutions? Qingyuan laser Xiaobian take you to have a look:
Fault 1. Crack occurs during welding of 1000w laser welding machine
Cause analysis and solution: maintain the cleanliness of the workpiece; Workpiece matching gap is too large or burr, should improve the workpiece processing accuracy; The cooling speed of the workpiece is too fast, the temperature of the cooling water should be adjusted on the fixture to improve the temperature of the water; The protection gas flow is too large, by reducing the protection gas flow to solve.
Fault two, laser welding machine welding penetration is not enough
Cause analysis and solution: lack of laser energy can improve pulse width and current; The focus lens is not the right amount, you should adjust the focus amount and close to the focus position.
Fault three, laser welding machine welding welding seam is very black
Cause analysis and solution: The airflow direction of the guard gas is not correct, and the airflow direction of the guard gas should be opposite to the direction of the workpiece.
Fault four, laser welding machine welding fire weakened
Cause analysis and solutions: focusing lens or laser resonator membrane damage or pollution, should be replaced or cleaned in time; The laser does not output from the center of the copper nozzle under the focusing head, adjust the 45° reflective diaphragm, so that the laser output from the nozzle center; Main optical path laser deviation, main optical path total reflection and semi-reflected apertures adjustment, like paper inspection, dot adjustment; Cooling water pollution or long-term replacement of cooling water, cooling water replacement and cleaning ultraviolet glass tube and xenon lamp can be solved.