Error 1. When welding with a laser welder, the weld seam is very black
The airflow direction of the shielding gas is incorrect, and the airflow direction of the shielding gas should be opposite to that of the work piece.
Fault 2: Cracks appear during laser welding
1. If the cooling speed of the work piece is too fast, the temperature of the cooling water should be adjusted on the fixture to increase the water temperature.
2. When the fit gap of the work piece is too large or there are burrs, the machining accuracy of the work piece should be improved.
The work piece has not been cleaned. In this case, the work piece needs to be cleaned again.
4. The shielding gas flow rate is too large, which can be solved by reducing the shielding gas flow rate.
Fault 3: Insufficient penetration of laser welding machine
1. Insufficient laser energy can increase pulse width and current.
2. The focusing amount of the focusing lens is incorrect, and the focusing amount should be adjusted to get close to the focusing position.
Fault 4: The flame weakens when the laser welding machine is welding
1. The shutter is not fully repelled, check and lubricate the shutter connector to make the connector work smoothly.
2. Main optical path laser deviation, main optical path total reflection and semi-reflection aperture adjustment, image paper inspection, dot adjustment.
3. It can solve the problems of cooling water pollution or long-term non-replacement of cooling water, replacement of cooling water, cleaning of ultraviolet glass tubes and xenon lamps.
4. The laser will not output from the center of the copper nozzle under the focusing head. Adjust the 45° reflective aperture to output the laser from the center of the nozzle.
5. If the focusing lens or laser resonant film is damaged or polluted, it should be replaced or cleaned in time.
When the laser welding machine fails, the operation check can be carried out according to the above contents.
laser welding machine
Radium Jemin laser welding machine adopts automatic welding torch to replace the previously fixed optical path. Manual welding is flexible and convenient, and the welding distance is longer. It overcomes the limitation of workbench space and cannot be used when the work piece size is uneven. The laser hand-held laser welding machine is mainly used for welding of fixed positions such as large work pieces, inner right angles, outer right angles, and plane welds. The heat-affected zone is small during welding, the deformation is small, the welding depth is large, and the welding is firm. This is a relatively flexible new welding process for long-distance welding of large work pieces. Effective welding of carbon steel, stainless steel, galvanized sheet and other metal materials, suitable for butt welding, lap welding, internal and external fillet welding, arc welding and special-shaped welding.