The
working surface of R.S. UDYOG shows the white graphite free structure
consisting of eutectic carbide and transformed
austentite. This gives a hard layer which
confers good resistance to wear. The core
and necks exhibit a tough grey structure,
and the iron of the transition zone is mottled.
Compared
to grey iron, white chill iron is less soft,
strong and incapable of with standing high
dynamic stresses, but owing to its greater
hardness, has better wear-resistance, and
has high compressive strength. It retains
a fair proportion of its strength at elevated
temperature, for example, in hot rolling
. These make excellent work Rollers for
two, three and four-high mills, turning
out of high grade ferrous and non-ferrous
sheet and strip or section. High Alloy Clear
Chilled Rollers have proved well suited
for the finishing stand of rod and light
section mills, for continuous small and
medium hot strip mills, and for strip mills
of older design |
