Low heat input electrode for repairs of large hot working dies.
LoTherme-635E is a low heat input, heavy coated, hydrogen controlled, all conventional position electrodes depositing low alloy weld metal. The welds are of radiographic quality. The weld metal has got superior deformation resistance at high temperatures.
It is ideally suitable for surfacing and repair of hot forging dies, punches and inserts by filling out of shape for further machining to get desired profiles. It is also suitable for repairs of earth moving equipments made of high tensile steel, repair of case hardening steel parts after removing the hard zones, for repairing cracks in Ni- Cr hot working dies.
(on 3 Layers): 360-400 BHN
(PWHT: 560 C for one Hour)
Ensure that the electrodes are perfectly dry before use. In case of moisture pick-up, re-dry the electrodes at 250°C for one hour. Clean the weld area free of any surface contamination. When welding on high hardenable materials of large thicknesses, adequate care for preheating, slow cooling & PWHT are necessary. Hold a short arc length and weld with stringer beads.
|Current Range (Amps)||250-280||200-250||150-180|