1. Select the appropriate cutting nozzle according to the thickness of the workpiece. When assembled cutting nozzle, inner and outer nozzle must keep concentric to ensure that the cutting oxygen jet in the center of preheated flame. When installed cutting nozzle, we pay attention to tighten the nut of the cutting nozzle.
2. Treatment of the flame goes out, when the preheat oxygen adjust the flame with control valve, if the flame goes out immediately, the reason is that each gas channel exist dirt or lax contaction. At this point, should tighten the nut. If it is invalid, should be removed shoot pipette, remove dirt and adjust the clearance between cutting nozzle and the inner sleeve, and tighten.
3. Treat mismatch of cutting nozzle and welding torch. After ignition, although the flame is normal, but when you open the cutting oxygen valve, the flame goes out immediately. The reason for this is lax mating surface between the cutting nozzle and cutting nozzle. This time should be tightened cut mouth, abrasive cutting nozzle mating surface until assort tight.
4. Tempering process, when occurs tempering, immediately turn the cutting oxygen valve, then close the acetylene valve and preheat oxygen valve. When stop the normal operation, it should cut off the oxygen valve, then close the acetylene and preheat oxygen valve.
5. Keep the cutting nozzle channel clean, clean the thick rust, oil on the surface of the workpiece.
