Tejasavi Rolls India

Focal Point, Patiala, Punjab

The working surface of Double Poured Chilled Rolls . 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.

Application :TMT, Wire Rod, Round & Bar, Plate, Medium and Narrow Strip.

Definite chilled iron rolls have a high-hardness layer of white cast iron at the surface.There is no free graphite basically in the matrix of work layer of alloy chilled cast iron roll, so its hardness is high with fine wear-resistant property. It can be used in small bar and wire rod as well as narrow strip steel fine rolling machine stand, and metallographic structure contains fine pearlite and carbide.
Application :Plate, Medium, Narrow Strip, TMT, Wire Rod, Round & Bar

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 transition from Chill to graphite being more smooth, the gradual change in hardness associated with the indefinite-chill structure allows deeper grooving. Thus Indefinite Chill Rollers are superior in biting performance and have enough strength and resistance against thermal shock occuring at the time of accident in the rolling operation compared to Indefinate Chilled Rolls
Application :Plate, Medium, Narrow Strip, TMT, Wire Rod, Round & Bar.