D207
D207 is a CrMnSi-type surfacing welding electrode with low-hydrogen sodium coating, which adopts DCEP connection method.
The product is applicable for surfacing welding of worn parts such as bulldozer blades and propellers.
Chemical components of deposited metal (%)
Test item |
C |
Mn |
Si |
S |
P |
Cr |
| Example value | 0.52 | 2.42 | 0.45 | 0.007 | 0.020 | 3.05 |
Hardness of surfacing layer:
Test item |
HRC |
| Example value | 55 |
Reference current (DC )
Welding electrode diameter (mm) |
Φ3.2 |
Φ4.0 |
Φ5.0 |
| Welding current (A) | 90-110 | 140-160 | 180-220 |
1. Before welding, the welding electrode must be baked at about 300-350℃ for 1h.
2. Before surfacing welding of large work pieces, it should be properly preheated to about 200℃, and removed of the rust and oil stain on the welding surface.
2. Before surfacing welding of large work pieces, it should be properly preheated to about 200℃, and removed of the rust and oil stain on the welding surface.
