Any machine can fail, laser welding equipment is no exception. Laser welding is a new type of welding, mainly for thin-wall materials, precision parts welding, spot welding, butt welding, overlap welding, sealing welding, high depth to width ratio, welding width is small, heat affected zone is small, small deformation, welding speed, smooth weld, beautiful, no processing or simple processing after welding, welding quality is high, no porosity, can be precise control, Small focus spot, high positioning accuracy, easy to realize automation. So in the use of laser welding machine, how many problems will occur, thus affecting the efficiency of laser welding machine. So what are the common failures of laser welding machine? What are the solutions?
Fault 1, laser welding machine welding cracks cause analysis and solution: keep the cleanliness of the workpiece; When the workpiece fit clearance is too large or there are burrs, the machining accuracy of the workpiece should be improved; The workpiece cooling speed is too fast, the temperature of cooling water should be adjusted on the fixture, improve the temperature of water; The protection gas flow is too large, by reducing the protection gas flow to solve the problem.
Fault two, laser welding machine welding penetration is not enough reason analysis and solution: lack of laser energy can improve the pulse width and current; The focus lens is not the correct amount, should adjust the focus amount and close to the focus position.
Fault three, laser welding machine welding weld is very black reason analysis and solution: the direction of the flow of the protection gas is not correct, the direction of the flow of the protection gas should be opposite to the direction of the workpiece.
Fault four, laser welding machine welding flame weakening reason analysis and solution: focusing lens or laser resonator film 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° reflection diaphragm to make the laser output from the center of the nozzle; Main path laser deviation, main path full reflection and semi-reflective diaphragm adjustment, like paper check, dot adjustment; Cooling water pollution or long-term replacement of cooling water, replacement of cooling water and cleaning UV glass tube and xenon lamp can be solved.
Post time: Mar-02-2023