>
>An aircraft surfaces are all drilled and riveted together rather than
>welded. The material drilled out to make room for rivets is missing.
>Still, they do it this way. and probably not for manufacturability
>reasons.
>
>And their demand for strong joints, say, in the wings, is no
>comparison (consequences wise) to the EV battery box demand.
I knew someone would bring up airplane skins. You car is not made
of aircraft aluminum. If it were, you should rivet and not weld.
The reason that they rivet on airplane skins is because the alloy
won't stand for welding. They would weld if they could do so without
totally destroying the strength of the skin alloy. The skin is made up of
layers of metal. The surfaces are corrosion resistant aluminum and the
interior is high-strength aluminum. The skin is very carefully rolled and
tempered to give it maximum strength. A weld would ruin that microstructure.
Steel is not aluminum. If you match the steel and the welding
process there is little or no loss of strength at the weld. Also, the
thermal stresses are a lot lower in steel welding than they are in aluminum
welding.
_ /| Bill "Wisenheimer" Dube'
\'o.O' <[EMAIL PROTECTED]>
=(___)=
U
Check out the bike -> http://www.KillaCycle.com
