6 kW laser cutting machine can cut 20 mm iron plate. It is suggested that oxygen should be used as auxiliary gas, the size of copper nozzle is 2.0, and the rotation speed is 200, so the cutting effect is the best. Under this parameter, high efficiency and high quality cutting can be achieved. When cutting steel plate, it is necessary to select different gases and parameters according to different materials and thicknesses to achieve the best cutting effect.
However, when the thickness of steel plate reaches 36 mm, regardless of the quality of steel plate, the speed of laser cutting will be relatively slow, generally around 650 mm/min. If the quality of steel plate is good and the pattern is not too complicated, laser cutting can still achieve better cutting quality. But in this case, it is more reasonable to use plasma cutting machine or flame cutting machine, which can improve efficiency and reduce cost.
Matters needing attention when using laser cutting machine:
1, comply with the general cutting machine safety operation procedures. Start the laser in strict accordance with the laser start-up procedure.
2, the operator must be trained, familiar with the equipment structure, performance, grasp the relevant knowledge of the operating system.
3. Wear labor protection articles according to regulations, and wear protective glasses that meet the requirements near the laser beam.
4. Don't process a material without knowing whether it can be irradiated or heated by laser, so as to avoid the potential danger of smoke and steam.
5. When the equipment is started, the operator shall not leave his post or entrust others to be responsible. If you really need to leave, please stop the machine or turn off the power switch.
6. Put the fire extinguisher at your fingertips; Turn off the laser or shutter when not processing; Do not put paper, cloth or other flammable materials near the unprotected laser beam.
7, found abnormal in the process of processing, should immediately stop, timely troubleshooting or report to the competent personnel.
8. Keep the laser, the lathe bed and the surrounding site clean and orderly, free of oil pollution, and the workpieces, plates and wastes are stacked in accordance with the regulations.
9, when using gas cylinders, should avoid crushing welding wire, so as to avoid leakage accidents. The use and transportation of gas cylinders shall comply with the regulations on gas cylinder supervision. Do not expose cylinders to sunlight or near heat sources. When opening the bottle valve, the operator must stand on the side of the bottle mouth.
10, high-voltage safety regulations shall be observed during maintenance. Every 40 hours of operation or weekly maintenance, every 1000 hours of operation or every six months of maintenance shall be carried out in accordance with regulations and procedures.