307 can welding rod weld pig iron?
If the pig iron pieces more important, from quality assurance can be used on the cold welding welding process, selection of materials suitable for cold welding of cast iron electrode WEWELDING777 welding current, low current 90-110A welding.
307 of the welding rod can not welding pig iron, pig iron can be J506 or 308 electrode welding, using hot welding process, the parent to do 550 preheating treatment, welding insulation, slow cooling.
WEWELDING777 (referred to as WE777) uses process hints1, it is necessary to do the appropriate cleaning before welding welding groove joint surface, the best cut into a U shape.2, the crack at the ends of a check hole, to prevent the expansion of crack in the welding process.3, repair angle is not good, you can choose WE100 welding rod cold slotting, forming effective U or V groove.4, as small as possible welding current, medium arc length, slightly inclined to the welding direction.5. It is recommended that the bead be made of short, fine bead and narrow transverse oscillating welding torch, and that the solder joint shall be filled before the arc welding is stopped. Heat treatment is usually not allowed, allowing parts to be cooled slowly.
