the last century, the worldwide consumption
of ADI in several industry
was estimated at 1,75,000 tons per year with
a projection forecast of 30% annual growth.
The only ingredient for production of ADI components is high quality ductile iron with
the appropriate alloy for hardenability.
It is to be noted that Austempering is not
the cure for poor quality, as it will make bad
iron even worse.
Important points to be noted for production
of ADI components:
1) Consistent chemical compostion,
2) Appropriate heat treat parameter,
3) Good quality Casting.