D608
D608 is a graphite coated CrMo cast iron surfacing welding electrode, which can be used for both AC and DC applications. And it is recommended to adopt DCEP connection method for it. The surfacing metal is Cr and Mo carbides with cast iron structure, so the surfacing layer has good hardness and wear resistance, and has good resistance to the abrasion of sediment and ore.
The product is applicable for surfacing welding of parts of agricultural machinery, mining equipment and other parts affected by sand wear and slight impact.
Chemical components of deposited metal (%)
Test item |
C |
Cr |
Mo |
| Example value | 2.80 | 3.56 | 4.00 |
Hardness of surfacing layer:
Test item |
HRC |
| Example value | 60 |
Reference current (DC )
Welding electrode diameter (mm) |
Φ3.2 |
Φ4.0 |
Φ5.0 |
| Welding current (A) | 90-120 | 130-160 | 170-210 |
1. Before welding, the welding electrode must be baked at 250℃ for 1h.
2. During surfacing, the work piece should be preheated to 400 - 500℃; If the surfacing thickness allows, surfacing a layer with J507 welding electrode first, then continue the surfacing while it is hot, and cool it slowly after welding.
3. The surfacing layer is not permitted for cutting machining. Only grinding is permitted.
2. During surfacing, the work piece should be preheated to 400 - 500℃; If the surfacing thickness allows, surfacing a layer with J507 welding electrode first, then continue the surfacing while it is hot, and cool it slowly after welding.
3. The surfacing layer is not permitted for cutting machining. Only grinding is permitted.
