D802 cobalt base electrode
use:
For 650 ℃ or so still work to maintain good wear resistance and corrosion resistance of the occasion, or bear the impact of hot and cold staggered parts, such as welding high temperature and pressure valves and hot cutting edge
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Fe | W | Cu | Co | Other elements of the total |
guarantee value | 0.7 / 1.44 | 2.00 | 2.00 | - | - | 25.00 / 32.00 | - | 3.50 | 5.00 | - | margin | ≤4.00 |
Surfacing layer hardness:
Reference current (AC, DC + )
Electrode diameter (mm) | φ2.5 | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 50 ~ 100 | 70 ~ 130 | 100 ~ 160 | 140 ~ 200 |
Precautions:
⒈ welding electrode to be 300 ℃ baking 1h.
⒉ as much as possible the use of DC power supply, the current should not be too large.
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