Incorrect flame setting
Wrong angle of blow pipe
Wrong angle of filler rod
Variation in speed of travel and angle
Carbon
Silicon
Manganese
Iron powder
1.60 mm
2.00 mm
2.50 mm
3.15 mm
Hardening
Tempering
Quenching
Normalising
By using clamps during welding process
Similar to arc welding mild steel plate
Local preheating, leftward welding technique flame heating each layer
Cracks repaired using appropriate electrode