Practical Considerations for Welding Aluminium - Flipbook - Page 17
Avoiding Faults/Defects
▪ Porosity
▪ Hydrogen absorption
▪ Relevance of porosity depends on its nature and location
▪ Sources of hydrogen:
▪ Environment
▪ Free from damp and humidity
▪ Parent material
▪ Purchased to a recognised standard
▪ Degreased
▪ Oxide removal by mechanical means
▪ Protection if not welded immediately
