GREY CASTING
DESCRIPTION
High strength nickel electrode .for welding lamellar malleable and nodular grey cast iron for welding cast iron to steel. Weld deposit is machine-able.
APPLICATION
- Pump castings, engine blocks, water jackets
- Broken parts from gray cast iron.
uses
Clean the welding area by grinding. if the welding area was contaminated by oil heat the area until it turns red.
To open cracks use Z-71 gouging electrode.
To reduce the danger of new crack, if possible weld a layer of the weld deposit on both sides of the parts you want to join and then join the parts by welding on the welded layers.
Try to reduce to minimum the heat input by using low amperage and welding short stringer weld beads with approx. 50mm length.
Remove the slag immediately after welding and peen the deposit to release the stress.
Reignite on the weld and not on the base metal.
MECHANICAL PROPERTIES
| Yield strength [N/mm^2] | Tensile strength [N/mm^2] | Elongation [%] | Hardness |
| – | 450 | 33 | 220HB |
Welding positions
RE-DRYING
100-150°C/1-2H
| Diameter | Length | Current [amps] | ||
| in | mm | in | mm | |
| 3/32 | 2.50 | 14 | 350 | 50-80 |
| 1/8 | 3.25 | 14 | 350 | 80-110 |
| 5/32 | 4.0 | 14 | 350 | 110-150 |
| 3/16 | 5.0 | 14 | 350 | 150-190 |
