Cast Iron Ingot Moulds, Ferro Alloys Manufacturer and Supplier.

Spheroidal Graphite (NODULAR) Cast Iron

S.G Iron (Nodular) or Ductile Iron Rolls are available in a wide range of hardness & composition for a variety of application. The matrix structure varies from Ferrito – Pearlitic to Bainitic & Martensitic together with different carbide contents and graphite in the form of spheroids/nodules. The Rolls are used in Roughing, Intermediate as well as Finishing stands of both heavy & light section mills. Some critical grades are heat treated for higher strength. Chemical composition and structure are chosen o suit specific application.

Indefinite Chill Alloy Cast Iron

These are cast iron based rolls alloyed with Nickel, Chromium and Molybdenum having a matrix of pearlite and carbide with flake graphite. these rolls are used primarily for Section Rolling. The material has very good thermal properties coupled with imparting good surface finish to the product.

These rolls are available in higher hardness range where the matrix is Bainitic instead of Pearlitic and are used in finishing stands of rod mill.

Alloy Steel Based

These Rolls are special hyper eutectoid steels alloyed with Nickle, Chromium & Molybdenum. These Rolls are used in breakdown, roughing & intermediate mills for bloom, billet & sections and for finishing of heavy sections.

These rolls are statically cast and undergo a three stage high temperature heat treatment comprising of annealing, normalizing & tempering cycles. The rolls are available in a wide variety of composition & properties to suit specific application. These rolls normally do not have any drop in hardness along section.

Double Poured Alloy Indefinite Chill

D.P.I.C Rolls are made of a high alloy iron shell and a soft grey iron or ductile iron core metal. These rolls are used in finishing stands of Rod mills and for flat rolling. The shell material consisting of predominantly Bainitic or Martensitic matrix with free carbides with small quantities of tiny flake graphite, have excellent wear resistance coupled with resistance to fire cracking. These rolls are available in hardness range of 70 to 85 ShC. The core material of these rolls is mostly grey iron but where higher strength is required, the core is made of ductile/nodular cast iron.

Ring Rolls

Ring Rolls have vast application in today’s rolling mills. They are used for tube rolling in assel mills, sizing mills, piercing mills. They are used in bar straightening machines, in cantilever rod mills and structure rolling universal mills, as also in bar rolling planetary mills.

The ring rolls are of various qualities and metallurgy to suit the rolling requirement:

•	Spheroidal Graphite bainitic and Pearlitic matrix
•	Alloy Cast Steel Base
•	Indefinite Chill

Ring Rolls Non Metallurgial Industries

Rolls for paper, Rubber, Flour, Plastic etc. are made with the following composition. The chill depth of these rolls are generally in the range of 12 – 15 mm. however, in special cases higher chill depth can be given. The hardness of such roll ranges between 60 to 75 Shore ‘C’. The above rolls have very good wearand corrosion resistance with uniform chill depth, soft core and journals. Hollow rolls are pressure tested hydraulically for checking any unsoundness of roll.


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