D327
Description:
D327 is a low hydrogen sodium type CrWMoV cold die welding electrodes, using DC reverse.
use:
For surfacing all kinds of cold dies and cutting tools, but also can be used to repair the higher wear-resistant mechanical parts.
Deposited metal chemical composition (%)
| C | Cr | Mo | W | V | S | P |
guarantee value | ≤0.50 | ≤5.00 | ≤2.50 | 7.00 ~ 10.00 | ≤1.00 | ≤0.035 | ≤0.040 |
Surfacing layer hardness:
(Air-cooled after welding) HRC ≥55
Reference current (DC + )
Electrode diameter (mm) | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 100 ~ 130 | 130 ~ 160 | 170 ~ 220 |
Precautions:
⒈ welding electrode to be 300 ~ 350 ℃ baking 1h.
⒉ before welding the workpiece to be preheated to 300 ℃ or more, so as to avoid cracking.
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