[ Problem Point ]
Oxide film on the weld surface is worried about.
[ ⇒Kaizen Point ]
High temperature heating of the shielding gas was carried out using the hot wind heater.
Even if it thickened metal, welding said well.
Related page:
No.68 Manufacturing of dryness steam of electric boiler 
No.64 Metal Parts Drying after Washing 
No.65 Small high-temperature tunnel furnace heat source 
No.70 Heat source of nitrogen shield soldering iron 
No.71 Manufacturing of superheated steam 
No.77 Heating of tungsten material 
No.84 Study of shape memory alloy 
No.85 Breeze nitrogen heating of powder metal for 3D printer