Spheroidal Graphite (Nodular) Cast Iron or Ductile Rolls are available in a wide range of hardness & composition for a variety of application. The matrix structure varies from Ferrito-Pearlitic, Pearlitic to Bainitic & Martensitic together with different carbide contents and graphite in the form of spheroids/nodules. These Rolls are essentially an Indefinite Chill type material, but with the Graphite in Nodular form instead offlake and having alloyed with higher % of Nickel & Molybdenum along with Carbon.. Some critical grades are heat treated for higher strength. These rolls are very much suitable for the rolling of row products with wide range of applications due to its hardness penetration, good wear resistance and tough necks, this material has become a benchmark.
Advantage: Pearlitic nodular rolls have high strength, good thermal properties and resistance to emergencies as well as small hardness gradient of working layer. Bainitic nodular structures provide for better wear resistance at high surface hardness.
Applications -
Application: Roughing and intermediate rolls for slabbing and blooming mills. Roughing, intermediate and finishing for rail and structural mils. Finishing for wire rod and narrow strip mils.
Rolling mills
TMT type rolling mills
T - Bars & U -Section Mill Rolls
These paper machine rolls are manufactured with the help of special alloying to ensure the optimum production. High corrosion resistant is another salient feature of our paper mill rolls, paper machine rolls and steel mill rolls.paper mill rolls are made in special ally categories in different hardness range between 65°-75° shore as suitable. Since most such rolls are usually subjected to high RPM, they are very accurately dynamically balanced. Paper mill rolls have anit-slip surface and can be supplied as â??Camberedâ??. Concentricity, Roundness and other dimensions in such are maintained to very low & precise tolerances.
Double Poured Chill Rolls
DPIC rolls are made of a high alloy iron and a soft grey iron or ductile iron core metal. having minimal having minimal drop in hardness with a good it is recommended to keep the core as nodular iron (sg iron). better roll cooling is required for these rolls in the mill.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.
Aplications -
Cold Steel Rolling Mills
Hot Steel Rolling Mills
Copper Rolling Mills
Automobile
Agriculture Items
Sugar Mills Shafts
Plate Rolling
Stainless Steel Rolling
Alloyed rolls are special steels alloyed with nickel, chromium & molybdenum which is used in breakdown, roughing & intermediate mills for finishing of heavy sections.
These rolls are statically casted and undergo a three stage high temperature heat treatment comprising of annealing, normalizing & tempering rotation.
The rolls are available in a wide variety of composition & properties to suit specific application.
The matrix structure is pearlitic or bainitic depending on the alloy content.
Changing the carbide distribution obtained through controlled chemical composition varies the hardness.
It's used in finishing rolls for sheet, plate and strip mills.Intermediate and finishing rolls for small section, bar and wire rod mills. Also used as cold mill rolls for ferrous and non-ferrous sheets.
Applications
Rolling mills
TMT type rolling mills
Chilled Iron Rams (Pistons) are chilled casted to get 100% Scratch Proof surface for longer life of Hydraulic Seals. The surface of the Rams is hard enough to withstand almost any climate and yet smooth on seals for long life. Chilled Rams are free from all defects like sand fusion, blow holes, piping & cracks etc. We are manufacturing Chilled Rams are having protected centres & having up to 0.01 micron finish These Rams are capable to bear external specific pressures. The hard and grinding mirror polished surface maintains the high hydraulic oil pressure together with the circumstantial seals.
Chilled Iron Rams (Pistons)take the pressure of the hydraulic fluid on one side and pass them on to the forming tools on the other side for these applications; Chilled Cast Iron or Chilled Spheroidal Cast Iron have proven their reliability for decades. These Hydraulic RAM/Piston are made one piece, flange fitted or fabricated along with drilling operation
Applications -
Metal Extrusion Presses
Four Pillar Type Press
Non-Ferrous Metal Extrusion Presses
Column Type Press
Open Throat Type Press ['C' FRAME]
Special purpose Press
Closed Frame Type Press ['H' TYPE]
Large Piston based machinery
Pneumatic Presses
Tyre â?? Tube Plants
Plywood Industries
All Kind Of Hydraulic Presses
Forging is a process in which the casted ingot is heated in the furnace & then material is hammered according to the customers sizes & requirements, thereafter heat treatment is done in normalizing/annealing furnace.
Forged rolls are manufactured from carbon steel, alloys steel & stainless steel, these rolls are available in primarily in forged m.s. rolls , forged en-8 rolls , forged en-9 rolls, forgeden-19 rolls, forged en-24 rolls , forged en-31 rolls , forged en-42 rolls forged class 2 & forged class 3 etcetera,
Our forged rolls are available with groove, bearing sizes, ready to use conditions or in semi-finished or in black forged condition, apart from rolls we offer forged product range of forged spindles, forged rings, forged shafts, forged blanks, forged cranks, forged pinion gears, flanges, forged wheels & other specially ordered products, all forged products are dispatched with essential certification, addition to that we also offer ultrasonically tested forgings for variety of applications.
Applications
Cold Steel Rolling Mills
Hot Steel Rolling mills
Copper Rolling Mills
Plate Rolling
Stainless Steel Mills
Automobile
Agriculture Items
Sugar Mill Shafts
Definite chilled iron rolls have a high-hardness layer of white cast iron at the surface. These rolls have the advantage of selecting the harder best performing material on the working surface, which is primarily a Cr-Ni-Mo alloyed chill cast iron & a relatively softer material inside.
White chill iron is less soft,strong and incapable of withstanding high dynamic stresses but owing to its greater hardness , has enough strength and better wear resistance against thermal shock occurring at the time of accident in the rolling operation compared to other chilled rolls.
These rolls have high compressive strength.It retains a fair proportion of its strength at elevated temperature, for example, in hot rolling .
Chilled to graphite being smoother, the hardness associated with the definite chilled structure allows deeper grooving.
A very fine surface finish is required , rolls for hoop and skelp mills must be chosen with special attention to strength and hardness so the rolls will match the roughing , intermediate and finishing stands.
The rolls are double poured duplex rolls and are manufactured by the advance centrifugal process.
These make excellent work rolls for two, three and four-high mills, turning out of high grade ferrous and non-ferrous sheet and strip or section.
High Alloy Clear Chill Rolls 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.
These rolls are manufactured for section mills producing rounds, squares, flats, Hexagon, Gate Channel as well as mills producing Tor steel and Tmt bars.
Material Specifications
Process
Hardness
Clear Carbon Chilled Cast Iron
Centrifugal Spun Cast
430 - 550 HB
Ni-Cr Alloyed Chilled Cast Iron
Centrifugal Spun Cast
500 - 630 HB
Grey Cast Iron
Centrifugal Spun Cast
180 - 350 HB
Applications -
Rolling Mills
TMT Type Rolling Mills
Alloyed rolls are special steels alloyed with nickel, chromium & molybdenum which is used in breakdown, roughing & intermediate mills for finishing of heavy sections.
These rolls are statically casted and undergo a three stage high temperature heat treatment comprising of annealing, normalizing & tempering rotation.
The rolls are available in a wide variety of composition & properties to suit specific application.
The matrix structure is pearlitic or bainitic depending on the alloy content.
Changing the carbide distribution obtained through controlled chemical composition varies the hardness.
It's used in finishing rolls for sheet, plate and strip mills.Intermediate and finishing rolls for small section, bar and wire rod mills. Also used as cold mill rolls for ferrous and non-ferrous sheets.
Applications
Rolling mills
TMT type rolling mills
