W - Aluminium glossary

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Wall ironing

Wall ironing is a process applied following the deep drawing method. The hollow piece, which still remains on the punch, is drawn through a second...

Welding

Welding is a joining process that can be used to produce permanent joints between two metal components. The area where the parts are to be joined is...

Welding defects

Welding defects are irregularities that occur in the work piece as a result of welding. Such defects include unfavourable changes to the structure...

Wilm, Alfred

Alfred Wilm, a German engineer, discovered by chance in 1906 that the mechanical properties of aluminium could be markedly improved by small...

Wire

Wire is a semi-finished product that is mostly wound onto spools or reels. The cross-section of wire is solid and can take various forms. The edges...

Wöhler, Friedrich

In 1827, Friedrich Wöhler, a German chemist (1800-1882), produced aluminium using a method based on that of Hans Christian Oersted (albeit a much...

Working

The term working covers all processing techniques, such as rolling, extrusion or forging, with which a metal can be shaped into another form, which...

Wrought alloys

There are two types of aluminium alloy: casting alloys and wrought alloys. Wrought alloys are characterised by having up to 10% alloying elements and...