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.
Hardness of Surfacing Layer: HRC≥ 55
Application:
Used for welding parts of agricultural machinery,mining equipment,etc.which receive grit wear and slight impact.
Instructions:
1. The electrodes must be baked under 250º C for an hour before welding.
2.In surfacing welding, the weldments should be preheated to 400-500ºC,If the surfacing thickness permits,asurfacing layer can be made with J507(AWS E7015) at first.Then surfacing welding should be done when there is enough heat.The weldments should be cooled slowly after welding.
3.Machine work should not be given to the surfacing layer.It can only be given grinding.
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