basic-covered electrode for depositing wear resisting overlays on structural members subjected to severe abrasive wear. Weld metal can be machined only by grinding. Suitable for hardfacing applications of crushing and grinding of coal, mineral, soil, rocks, excavator parts, bucket edges and bucket teeth, drilling bits, coal planes, conveyor screws. In case of very crack sensitive base metals, a tough buffer layer, made 307 electrodes, is required, before hardfacing. Preferred to use with DC, electrode in positive (+) pole and also possible to use with AC.
Typical Composition of all-weld Metal
Mechanical Test of weld Metal
|– Stick electrodes should be redrying for 2 h / 150-200° C.|
- All, except vertical down
- AC & DC (+)