D207
Description:
D207 is a low hydrogen sodium type crust CrMnSi surfacing electrode, the use of DC reverse.
use:
For welding bulldozer blades, propellers and other wear parts.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Cr | Other elements of the total |
guarantee value | 0.30 ~ 1.00 | ≤2.50 | ≤1.00 | ≤0.035 | ≤0.035 | ≤3.50 | ≤1.00 |
Example value | 0.52 | 2.42 | 0.45 | 0.007 | 0.020 | 3.05 | - |
Surfacing hardness: HRC ≥ 50
Reference current (DC + )
Electrode diameter (mm) | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 90 ~ 110 | 140 ~ 160 | 180 ~ 220 |
Precautions:
1. Before welding electrode to be about 300 ~ 350 ℃ baking 1h.
2. Large parts pre-welding should be preheated to about 200 ℃, and surfacing part of the surface rust and oil clean.
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