ALUMINIUM casting
DESCRIPTION
Aluminum electrode with 12% Si for welding and repairing aluminum or aluminum alloy pieces (AlSi, AlCuSiMn, AlSiMg). Especially designed for welding cast and extruded aluminum alloys with Si levels higher than 7%. Dissimilar joints between aluminum and aluminum alloys.
APPLICATION
- Aluminum casting.
- Pump housings.
- Engine block.
- Aluminum impellers.
base material
| Classification | Matrials No. |
| G-AlSi9Mg | 3.2373 |
| G-AlSi10Mg | 3.2381 |
| G-AlSi10MgCu | 3.2383 |
| G-ALSi12 | 3.2581 |
| G-ALSi12Cu | 3.2583 |
Technique and recommendations:
Before welding all oil, grease, and dirt should be removed and all the weld area must be cleaned.
Preheat massive pieces (more than 6mm of thickness) to 150-250°C.
The best results are achieved with a short arc and the electrode angled 90° to the piece that is welded.
Use a Fast travel speed, remove slag between passes and when finished.
In post-welding cleaning, the resistant oxide layer should be removed with a non-contaminated stainless steel with brush. Afterwards the welded area should be rinsed with clean, hot water.
Aluminum electrodes are very sensitive to humidity pick-up; therefore keep the open tins in a dry place.
* Can also be used with an oxygen torch.
* the electrode can be welded on small inverters with high O.C.V only.
MECHANICAL PROPERTIES
| Yield strength [N/mm^2] | Tensile strength [N/mm^2] | Elongation [%] |
| 80 | 180 | 5 |
Welding positions
RE-DRYING
If necessary dry the electrodes 100°C/3H
| Diameter | Length | Current [amps] | ||
| in | mm | in | mm | |
| 3/32 | 2.50 | 14 | 350 | 60-90 |
| 1/8 | 3.25 | 14 | 350 | 80-110 |
| 5/32 | 4.0 | 14 | 350 | 110-150 |
