SHIVA CHILL ROLLS PRIVATE LIMITED Anna Nagar, Chennai, Tamil Nadu

These static cast Rolls are structurally characterized by nodular graphite. High Tensile strength and deep hardness penetration are few properties that nodular graphite gives these Metal Rolls. Because of excellent mechanical & material properties these Metal Rolls are capable of withstanding heavy loads and hence these Rolls are used in various Mills that produce different products. These Rolls are structurally made up of cementite and nodular graphite. Sufficient water cooling is a necessity for satisfactory performance. Depending upon the required mechanical properties i.e. wear resistance, Roll hardness, strength, of Rolls, wide range of Rolls: 1. Pearlitic and 2.Bainitic Accicular can be made by alloying with nickel, molybdenum and chromium for added strength and deep hardness penetration. Applications of Spheroidal Graphite Iron Rolls include : Blooming, section and wire rod roughing. Wire rod roughing and intermediate rolling. Plate intermediate and finish rolling. Roughing, intermediate and finishing for Rail and Structural mills. Size limitation : Maximum : 600 mm diameter Minimum : 150 mm diameter

The surface of these Rolls have Chill with various alloys and are cast iron based. The matrix structure is pearlitic or bainitic depending on the alloys and its percentage. High alloy content gives uniform carbide distribution and fine deposits of graphite on the microstructure. Desired hardness of these Rolls can be obtained by controlling the chemical composition and using different casting method according to the application. These rolls produce excellent results in plate and section finishing. Application of Indefinite Chilled Cast Iron include : Sheet, plate and strip finishing rolling. Section and bar intermediate and finishing rolling. Wire rod intermediate and finishing rolling. Can be used in cold rolling mills for sheets. Size limitation : Maximum : 600 mm diameter Minimum : 150 mm diameter

These Metal Rolls have hard alloy iron on the working layer and the core is either made of soft grey iron or nodular iron as application demands. The matrix generally is bainitic with equal distribution of carbides and graphite on the shell. Due to the Nodular core and highly alloyed surface these Rolls have excellent mechanical properties, strength, high wear resistance, good surface finish and resistance to shock/thermal/mechanical loads. These Rolls are produced by spin and static cast together. Application of DPIC Rolls include : Wire rod finishing rolling. Flat products rolling in Hot strip and Plate Mills. Cold rolling of non-ferrous sheets. Size limitation : Maximum : 600 mm diameter Minimum : 150 mm diameter

These Metal Rolls have less carbon content but variety of alloy elements are used to strengthen the matrix. The microstructure is primarily pearlitic with parts of cementite. Their properties include high tensile strength and toughness. After the tailored heat treatment process, the micro structure condition improves thereby complimenting good mechanical properties like good thermal cracking resistance, fatigue resistance and wear resistance. Application of Alloy Cast Steel Rolls include : Medium and small blooming rolling. Section roughing rolling. Section strip wire rod rough and intermediate rolling. Billets rough rolling mill and rail beams Size limitation : Maximum : 600 mm diameter Minimum : 150 mm diameter

Adamite Steel Rolls are mainly composed of fine pearlitic matrix with some cementite in the structure. The structure consists of well broken up and dispersed carbides in a pearlitic matrix complementing the hardness and wear resistance imparted They typically have great strength, good thermal properties and high wear resistance. Unlike other Metal Rolls, these have uniform hardness from depth to the surface which makes them very special. Hardness of these Rolls is maximum amongst the steel based Rolls. These Rolls are statically cast and go through multi stage heat treatment process (Annealing) followed by Tempering phases in order to develop the combination of hardness, toughness and wear resistance required for heavy duty wear applications.by highly alloyed matrix.

Adamite Steel Rolls are mainly composed of fine pearlitic matrix with some cementite in the structure. The structure consists of well broken up and dispersed carbides in a pearlitic matrix complementing the hardness and wear resistance imparted by highly alloyed matrix. They typically have great strength, good thermal properties and high wear resistance. Unlike other Metal Rolls, these have uniform hardness from depth to the surface which makes them very special. Hardness of these Rolls is maximum amongst the steel based Rolls. These Rolls are statically cast and go through multi stage heat treatment process (Annealing) followed by Tempering phases in order to develop the combination of hardness, toughness and wear resistance required for heavy duty wear applications. Applications of Adamite Rolls include : Section finishing, wire rod intermediate rolling. Roughing stands of strip mills. Medium and small blooming rolling. Wire rod and bar steel roughing. Size limitation : Maximum : 600 mm diameter Minimum : 150 mm diameter