Chemical Composition Of Deposited Metal(%)
Pilot Projects |
C |
Mn |
Si |
S |
Ni |
Fe |
total amount of other elements |
Guaranteed Value |
≤2.00 |
≤1.00 |
≤2.5 |
≤0.030 |
≥90 |
≤8.00 |
≤1.00 |
Example Value |
1.45 |
0.85 |
1.80 |
0.003 |
93.20 |
2.00 |
— |
Purpose:
Applicable to repair welding of cast iron thin parts and machining surfaces, such as cylinder head, engine block, gear box and machine tool rails and other important gray iron castings
Features:
Z308 is a cast iron electrode with pure nickel welding core and strong reductive graphitized coating. It can be used for both AC and DC, and is easy to operate. When welding, the welding parts can not preheat, and have good crack resistance and processing performance.
Points to note:
1. The electrode must be baked at 150 ± 10℃ for 1 hour before welding and then used.
2. The welding zone stress can be eliminated by hammering the weld to avoid cracking.
3. In order to reduce the impurity elements in the base metal permeating into the weld, reduce the width of the white area, and improve the crack resistance and workability, the low current should be used as far as possible in the cold welding of cast iron.
Welding position: