Treatment method of flame spray nozzle gun tempering

       When the spray gun is backfired, first turn off the gun immediately, quickly bend the oxygen hose by hand to cut off the gas, and then turn on the spray gun switch after the external flame is extinguished. Release the bent oxygen tube after the gun switch is turned on. At this time, if there is no creaking sound of gas burning in the spray gun or pipe, it means that the tempering occurs between the air switch of the spray gun and the muzzle, and the tempering has been processed. At this time, the gas circuit switch can be turned on immediately, and the air flow can blow out carbon deposits and soot. If the squeak of gas burning still occurs in the spray gun or the pipe, it means that the flashback phenomenon still exists and has not been eliminated, and the flashback has passed the gas circuit switch of the spray gun and entered the inside of the hose. At this time, the valve on the oxygen cylinder should be closed immediately to cut off the oxygen source. If the three gas pipes use quick connectors, the quick connectors for oxygen and acetylene gas can be quickly pulled out, and the tempering can be extinguished.