D516MA
Description:
D516MA is a low hydrogen potassium type coating of high chromium manganese steel surfacing electrode, surfacing metal has good wear resistance, heat resistance, corrosion resistance and thermal cracking resistance, welding process is simple, without preheating before welding, after welding Without heat treatment, surfacing layer can be machined.
use:
For surfacing working temperature below 450 ℃ receiving water, steam, petroleum medium under the action of components, such as 25 cast steel, high pressure valve sealing surface.
Deposited metal chemical composition (%)
| C | Cr | Mn | Si |
guarantee value | ≤0.25 | 12.00 ~ 14.00 | 6.00 ~ 8.00 | ≤1.00 |
Surfacing layer hardness:
HRC≥30
Reference current (AC, DC + )
Electrode diameter (mm) | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 80 ~ 120 | 120 ~ 160 | 160 ~ 200 |
Precautions:
1. The electrode before welding shall be baked at 300-350 ℃ for 1h
2. The oil and impurities on the weldment shall be cleaned before welding.
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