Selection of welding materials
Thread Content
Is it appropriate to use ER50-6 as the TIG welding wire for welding between 16MnDR tube sheets and 16Mn heat exchange tubes? If not, what grade should be used? What precautions should be taken during welding?
It should work, but a process evaluation is required. Before welding: Attention should be paid to the cleaning of the workpiece prior to welding, the dimensions of the prepared groove, and the quality of assembly ； During welding: Just follow the parameters specified in the process qualification guidelines, and pay attention to the angle of the welding torch – it is generally 40-50 degrees ； During arc initiation, supply gas first and then apply power; at the end, turn off the power first and then cut off the gas supply.