D207
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 |
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.