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Welding Cast IronWelding cast iron continued...Length of weld beads must be 5 to 10 cm. Directly after welding the weld bead mustbe hammered, before cooling down! With powerful hammering the weld bead will bedeformed which will reverse the shrinkage stresses. Every hammer blow must resultin a visual deformation of the weld bead. Interpass temperature must be kept below100°C.Cast iron saturated with oilCast iron that has been in contact with oil for longer periods can give problems duringwelding. During welding the oil will burn and form gases, which result in weld metalporosity.Repair grey and nodular cast ironApplicationSoft weld metalWelded area to be goodmachineableElectrodeRepTec Cast 1Higher strengthVery good weldabilityRepTec Cast 31Welding Cast Ironwww.lincolnelectric.com.au13