D608                

According with GB EDZ-A1-08

Introduction: D608 is a kind of CrMo cast iron surfacing electrode with graphite type coating. AC/DC. DCRP (Direct Current Reversed Polarity) is more suitable. Because the surfacing metal is Cr and Mo carbide with cast iron structure, the surfacing layer has higher hardness, higher wear-resistance and excellent silt and ore wear-resistance.

Applications: Used for welding parts of agricultural machinery, mining equipment, etc. which receive grit wear and slight impact.

Chemical Composition of Deposited Metal (%)

Hardness of Surfacing Layer: HRC≥55

Reference Current (AC, DC+)

Instructions:
1.The electrodes must be baked under about 250℃ for an hour before welding.
2.In surfacing welding, the weld should be preheated to 400-500℃. If the surfacing thickness permits, a surfacing layer can be made with J507 at first. Then surfacing welding should be done when there is enough heat. The weld should be cooled down slowly after welding.