... 2).Digital auto-control,it has the function of manual,automatic and heating-keeping-cooling divide period to control. 3). ... parts,hardware tools,gears,chaim wheels,and other machine attachments quenching for parts or whole body.Through heatingSmall modules part ... ,heat seal,powder applicating,embedding plastic to metal,etc. Full Automatic Medium Frequency Induction Braze Welding Machine XZ-50B