D822 cobalt base electrode
use:
Used for roller bit bearings, rotating impellers, grinder cutting edge, screw feeder and other wear parts surfacing.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Cr | Ni | Fe | W | Cu | Co | Other elements of the total |
guarantee value | 1.75 / 3.00 | 2.00 | 2.00 | - | - | 25.00 / 33.00 | - | 5.00 | 15.00 | - | 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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