Gas welding and gas cutting
Gas welding and gas cutting refers to the use of combustible gas and combustion of combustion gas combustion flame on the metal welding and cutting process, commonly used combustible gas is mainly acetylene, liquefied petroleum gas and hydrogen, commonly used combustion gas is oxygen. Gas welding is the use of flame on the metal parts of the metal and solder joints to heat, to melt, has reached the purpose of welding. Gas cutting is the thermal energy of the flame to the workpiece cutting place for preheating, the use of high-speed cutting oxygen flow, so that the metal burning and the release of heat, in order to achieve the purpose of cutting. The difference between the two is that the gas is molten metal, gas cutting is to make the metal in pure oxygen combustion. ...