Al t1.0 / T tc φ0.1 _18 Al t1.0 / T tc φ0.1 To see how the thermocouple wires are welded, I welded each wire to the Al plate separately. Also, after creating the thermocouple contact, it is also welded to the Al plate. Spot Welder: HSW-03A Electrode: PSW-TC1 and HSW-FB2