Z208
Description:
Z208 is a low-carbon steel core, strong graphitized cast iron welding electrodes, the weld can be changed in the slow cooling of gray cast iron, cracking performance is poor. AC-DC dual-use, low prices.
use:
For welding gray cast iron defects.
Deposited metal chemical composition (%)
| C | Mn | Si | S | P | Fe |
guarantee value | 2.00 ~ 4.00 | ≤0.75 | 2.50 ~ 6.50 | ≤0.10 | ≤0.15 | margin |
Example value | 2.30 | 0.38 | 4.50 | 0.003 | 0.020 | - |
Reference current (AC, DC + )
Electrode diameter (mm) | φ3.2 | φ4.0 | φ5.0 |
Welding current (A) | 70 ~ 120 | 110 ~ 180 | 160 ~ 190 |
Precautions:
1. Before welding electrode to be about 150 ℃ baking 1h.
2. To withstand stress and impact and other important castings structure, the welding rod should not be used.
3 small thin-walled castings not a large part of the stiffness of the defect can not preheat welding repair, and general welding parts to be preheated to 400 ℃, slow cooling after welding insulation, the weld repair may be cutting.
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