... 2).Digital auto-control,it has the function of manual,automatic and heating-keeping-cooling divide period to control. 3).Auto ... and forging.Braze weldingMany lathe tool,drill bit,knives,saw bit,saw teeth,steel pipe,copper pipesbraze welding.MeltingGold,silver,copper ... seal,powder applicating,embedding plastic to metal,etc. Full Automatic Medium Frequency Induction Braze Welding Machine XZ-50B