By John Dwight
This hugely illustrated booklet is a pragmatic layout advisor to the structural use of aluminum. The chapters comprise this background of aluminum, variety of functions, alloys and their houses. The e-book additionally bargains with structural layout, and is a useful source for designers, with a variety of diagrams, charts and examples.
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Extra resources for Aluminium design and construction
The formability of non-heat-treatable material depends on the temper in which it is supplied; it is readily bent in the softer tempers. 4). Because of aluminium’s lower elastic modulus (E), springback is greater than with steel. Heat-treated material should only be manipulated when cold, and bending it in the full-strength T6 condition is difficult. The 6xxx-series alloys, and even worse the 2xxx alloys, will accept very limited deformation in this condition, and such practice is forbidden for 7xxxseries material, because of the risk of stress-corrosion cracking.
The torch, which is water-cooled, is much more complicated than that used for ordinary stick welding, since the supply tube has to convey four things simultaneously: current, wire, argon and water. The MIG process is suitable for welds in material down to a minimum thickness of 4 or 5 mm. Normally the electrode wire is pushed down the tube leading to the torch. This can occasionally cause problems with the wire kinking and jamming in the tube. 8 mm wire, avoids this problem by pulling the wire through the tube.
They can be either machined from T6-condition bar-stock, or forged and then artificially aged (T8-condition). 1). Also available are bolts in 2xxx-series material, which are stronger, though these may pose corrosion problems. It is recommended that the threads of aluminium bolts be lubricated, especially if the joint is later going to be dismantled. The best bolts for aluminium structures are in austenitic stainless steel (300-series), as these are much stronger than aluminium ones. The extra cost is likely to be small relative to that of the final structure.