Alloy cast steel are manufactured with high quality steel molten by arc furnace, due to the advanced casting and treatment technique, such rolls are very high intensity. Owing to its excellent performances of anti- heat crack, tenacity and wear -resistance, it is appropriate to be used for tough and immediate stands of section rolling mill, used as back- up rolls of hot strip rolling mill. Its metallographic structure is made of perlite or temper sorbite.
The alloy steel rolls are widely used in the BD mill and roughing stands of heavy section mills, universal mills and rail& beam mills. Yhis type of roll often has grooves in the roll body, so we make it by static cast. Due to the low carbon in the chemistry, we can hardly see graphite and carbide inthe microstructure. The matrix is pearlite & ferrite and little tempered sorbite. Based on high stength and toughness, it can work at a very tough condition, even with little or without cooling water. So, it is welcomed while rolling stainless steel , titanium and other high alloy products, or worked on the billet mills, BD mills against massive hit.
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