D227
Description:
D227 is a low hydrogen sodium type coating surfacing electrode, the DC reverse connection, surfacing layer for the martensite matrix by adding a certain amount of high hardness carbide, high abrasive wear resistance, surfacing metal has good resistance Cracking performance.
use:
Can be used to withstand a certain amount of impact load wear-resistant surface surfacing, such as boring machine disc-shaped hob surface grinding.
Deposited metal chemical composition (%)
| C | Cr | Mo | V |
guarantee value | 0.45 ~ 0.65 | 4.00 ~ 5.00 | 2.00 ~ 3.00 | 4.00 ~ 5.00 |
Example value | 0.50 | 4.53 | 2.47 | 4.50 |
Surfacing hardness: HRC ≥ 55
Reference current (DC + )
Electrode diameter (mm) | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 90 ~ 110 | 140 ~ 180 | 180 ~ 220 |
Precautions:
1. Before welding electrode to be about 300 ~ 350 ℃ baking 1h.
2 large parts pre-welding should be preheated to about 300 ℃, and surfacing part of the surface rust and oil clean.
related articles
The number of clicks:Update time:2017/12/26 14:22:19【print this page】