Low heat input electrode, machinable deposits, highly suitable for
crack-free joining of cast iron to steel.
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
Ultimate Tensile Strength
| 420 MPa|
|Weld Metal Hardness ||190 BHN |
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
Dia x Length
|Current Range (Amps)||140-180||100-140||90-120||50-80|