D276
Description:
D276 is a low-hydrogen type high chromium chromium manganese steel corrosion resistant surfacing electrode, D276 can be AC ??and DC (AC time-load voltage greater than 70V). Weld metal can work harden, full of toughness, cavitation erosion, and has good crack resistance.
use:
Suitable for surfacing welding turbine damage by cavitation of parts, such as water turbine blades leaves, but also for high wear resistance and toughness of high manganese steel surfacing, such as railway turnouts, screw conveyor, bulldozers Blade, grab, broken blade and so on.
Deposited metal chemical composition (%)
| C | Mn | Si | Cr | Ni | Mo | Other elements of the total |
guarantee value | ≤0.80 | 11.00 ~ 18.00 | ≤1.30 | 13.00 ~ 17.00 | ≤2.00 | ≤2.00 | ≤4.00 |
Example value | 0.38 | 12.65 | 0.45 | 14.20 | 0.050 | 0.065 | - |
Surfacing layer hardness:
HB ≧ 210
Reference current (AC, DC + )
Electrode diameter (mm) | φ2.5 | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 60 ~ 80 | 90 ~ 130 | 130 ~ 170 | 170 ~ 220 |
Precautions:
1. Before surfacing, the electrode must be baked at 300 ~ 350 ℃ for 1h.
2. When surfacing a lot of yellow smoke, should pay attention to strengthening the ventilation and stand in the upper position for operation.
related articles
The number of clicks:Update time:2017/12/26 14:15:55【print this page】