For Cast Iron Alloys

LoTherme-712 is a special Ferro-Nickel electrode designed for repair welds as well as for joining components of various types of cast irons, including grey and nodular cast irons and for welding them to steel and some ferrous and non-ferrous materials. It is the right electrode for repair welds as well as for joining components and parts made out of various types of cast irons.

LoTherme-712 electrode for rectification of defective casting in cast iron foundry; engine heads, pump casings, impellers, rope drums, ingot moulds and variety of cast iron machine parts and equipments. It is also suitable for welding cast iron to steel and some ferrous and non-ferrous materials.

For joining bevel the edges to 75-90° in single or double 'Vee' groove according to thickness of the parts. For repair of cracks, drill holes at the two ends of the crack to arrest its further propagation. Remove entire cracked material to sound metal by chipping, gouging or machining. Clean the weld area free of grease, oil, paints, etc. prior to welding. Redry the electrode at 150°C for one hour before use. Weld short beads not exceeding 50 mm at a time. Each bead should be peened when still hot. For large and heavy sections pre heating of the job may be necessary. After the welding is completed, the castings should be covered completely with a layer of asbestos or dry lime until it attains room temperature.