Reliable Steel Udyog Dhuri, Sangrur, Punjab

Spheroidal Graphite Iron Rolls (S G Iron) is considered as one of the most versatile roll materials now a days. It is produced by a small proportion of magnesium added to the melt as nickel-magnesium or alternative alloy, or as pure magnesium. In S G Iron Roll, the free carbon takes the shape of spheroids or nodules, thereby eliminating the notch effect of flake graphite and improving upon the mechanical properties of the cast iron. In these rolls the graphite is in the from of spheroids produced by suitable inoculation. Most nodular iron rolls are chill cast resulting with a hard working layer . The alloy content is accurately controlled to give fine and well distributed graphite nodules and refined carbide in generally pearlitic or beinitic / martenstic matrix. The Higher alloy content Cr-Ni-Mo makes the rolls more tougher & wear resistant.

Nodular pearlitic rolls are widely used for hot rolling applications in different type of Roughing, Intermediate & finishing stands. The material consists of nodular graphite and carbides in pearlitic matrix. Depending on the primary requirements (Whether thermal shocks/cracks, crack penetrations or wear resistance etc.) there are variety of Cr, Ni, Mo alloyed grades used considering the rolling mill operational conditions and groove / caliber design. The carbide is relatively higher in alloyed compared with standard grades.

Forging where in the material is hammered according to the customers sizes & requirements is a process in which the ingot is heated in the furnace & then forged. the forging process help in cohesiveness and strength by elongation of the grain structure, which results in material having much higher load bearing capacities as compare to cast material heat treatment is done in normalizing / annealing furnace and forgings are ultrasonically tested thereafter. we have the capacity to forge a single piece up to 7000 kg. in plain carbon steel such as m. s., class-2, class-3, en-8, en-9 & en-42, en-31, en-19, en-24, en-41b, en-353, en-25, en-18, etc. These forged rolls are basically used for rolling purpose in industries where grinders, channels, angles are manufactured.

We produce double pour indefinite chill roll by centrifugal casting. Which is an innovated casting method. With this casting roll remain free from Pin holes and cracks. The surface of these roll give uniform hardness and deep hardness, which is indispensable for/the high quality chill roll.

The working surface of Reliable Steel Udyog shows the white graphite free structure consisting of eutectic carbide and transformed austenite. This gives a hard layer which confers good resistance to wear. The core and neck are made upon steel shaft in specialized double poured centrifugally cost chill Rollers barrels. Compared to grey iron, white Reliable Steel Udyog is less soft, strong and incapable of withstanding 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 works in flour Mills, Chemical Industries, steel re-rolling mills, semi-automatic or Automatic plants, Wire roll plants, TMT plants, Roughing mill Rollers, Intermediate mill Rollers for two, three and four-high mills, turning out of high grade ferrous and non-ferrous sheet and strip or section. 

Cast steel Rolls are available in wide of chemical compositions varying from Hypo Eutectoid to Hyper Eutectoid steels. Alloying combinations of different element like Cr, Ni & Mo are normally used to achieve the desired physical and mechanical properties. In view of the demanding end use requirements these rolls can not be used in an as cast condition. When a coarse grain pearlitic structure with cementite and ferrite in a continuous network is normally obtained. The rolls are subject to specially designed heat treatment cycles to arrive at the optimum micro structure configuration with finepearlite and uniformly distributed suitable for the final application.

Adamite Rolls are widely used for hot rolling applications in different type of pre roughing and roughing group stands and also different positions in section mills as well. The material consists of carbides in pearlitic matrix and range in carbon contents between 1.0 and 2.2%. Depending on the primary requirements there are variety of grades with a series of carbon content and alloying elements used considering the rolling mill operational conditions such as wear, strength, thermal cracks etc... Steel base rolls are heat treated in various ways and have no hardness drop.