Good results were obtained when the raw material was cut by CO2 laser. CW mode laser is used. When the cutting speed is changed by the automatic control system of production processing of very small curves, the sheet metal processing price can be adjusted to make the laser output power consistent with the shaft cutting speed.
When CO2 is used as the production processing vapor, the edge of laser cutting will be slightly oxidized by air. For the plate with thickness up to 4mm, N2 can be used as production processing steam to carry out high pressure laser cutting. In this case, the edge of laser cutting is easy to be oxidized.
Complicated corridors small holes (diameter less than the thickness of raw materials) should be cut by single pulse laser. That will prevent cutting the bevel.
——Using CO 2, sheet metal processing factory in the edge of the air oxidation is OK. -The application of N2 to obtain the edge without air oxidation burr need be solved any more.
——With the high output power of the laser to be obtained high pressure N2, the cutting rate of CO2 will be very high higher.
- in order to cut stainless steel plate above 4mm with N2 without burr, it is necessary to adjust the focus position. Once again, the focus of the area will be reduced, there will be no way to reduce the natural area of focus.
——The oil slick coating on the surface of the steel plate can obtain stronger hole breaking effect without reducing the quality of production processing. For stainless steel plate, :
——CO2 laser cutting: for the thick plate above 5mm, the cutting speed is reduced, the laser adopts single pulse mode.
——The same aspect ratio of nozzle is selected for hole breaking laser cutting.