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Accicular
(Bainitic)
Rolls
Compared to
Clear Chill
Roll where
the chill-zone
is graphite-free
clear white,
Indefinite
Roll is cast
using such
proportions
of silicon,
chromium,
nickel and
molybdenum
that the working
face is no
longer completely
white but
contains a
small amount
of very finely
divided graphite
flakes gradually
increasing
from face
to core with
corresponding
decrease in
the amount
of carbide.
The rolls
are to ensure
minimum sacrifice
of clear chill
while achieving
maximum functional
depth.
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