Aluminium
Aluminium does not merely require “more current”. High thermal conductivity, low melting temperature, a refractory oxide film, high hydrogen solubility in liquid metal and the thermal-cycle sensitivity of heat-treatable alloys create a demanding process window.
Open interactive module →Topic overview
Aluminium does not merely require “more current”. High thermal conductivity, low melting temperature, a refractory oxide film, high hydrogen solubility in liquid metal and the thermal-cycle sensitivity of heat-treatable alloys create a demanding process window.
Are the exact alloy and temper known, and is the design based on weld and HAZ properties rather than only the catalogue strength of the parent material?
It must be removed in a controlled manner to prevent poor fusion, inclusions and unstable geometry.
Moisture, organic contamination, wire and shielding conditions are the principal gas sources.
What the module covers
- Aluminium and its alloys — welding without shortcuts
- 1. Alloy groups and HAZ behaviour
- 2. Why the oxide film is decisive
- 3. Porosity and hydrogen control
- 4. Filler-metal selection criteria
- Process checklist
- Practical rule
Continue with the practical module.
Open this topic directly in the interactive WeldScope portal.