Hi Michael :
'Alfin' was a patented process for bonding aluminum to steel. The steel was
first 'tinned' in a molten aluminum bath, with a certain time/temperature
profile, then placed in a mold and preheated to have the remainder of the
aluminum poured around it. I believe it was originally developed by
Fairchild Aircraft in the US for bonding aluminum heat fins to steel
aircraft cylinders.
>From what I'm told, General Motors in the US offered aluminum brake drums on
some of their 'muscle' cars during the 60s and 70s that did not use the
Alfin process, but were just aluminum cast around steel liners, with 'teeth'
in the steel to keep the liner from spinning out of the drum. These cars
were pretty much "fast in a straight line", stopping and cornering were not
their strong suits.
Randall
Michael Gajic wrote :
> I am not sure what is meant by the 'Alfin process'. Can you
> explain this for
> me? From what I understand you saying there can be finned aluminium drums
> made using the Alfin process and not using the Alfin process, is this
> correct?
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