Roller Mill Rolls The material properties of the Roller Mill Rolls are adapted to the specific demands for grinding, crushing, cracking, flaking or crumbling in flour mills, oil mills, cereal plants, coffee mills, chocolate plants as well as in feed mills. The economic advantages of using these rolls are Extended service intervals, resulting in longer trouble free operation time of the mill Reduced energy consumption Lower repair costs due to lesser down time Increased uniform product quality with higher output Smooth operations due to optimized machining and dynamical balancing of the

Steel Shaft Fitted Double Poured Chill Rolls Steel Rolls 'as-cast' without heat treatment are not suitable for rolling. Dendritic structure, coarse grain, non-homogeneity and internal stresses make it poor in mechanical properties. So these rolls are subjected to precisely calculated & controlled heat treatment, thereby distributing wildly scattered Cementite/Ferrite more evenly while retaining the basic Pearlitic structure so important to Alloy Steel Rolls. Such rolls have higher strength at the cost of hardness decrease compared to Chill or S G Iron Rolls, making them suitable for

Spheroidal Graphite Iron Rolls Spheroidal Graphite Cast Iron (S G Iron) or Ductile 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. S.G Iron Rolls are so superior in wear resistance to that of Cast Steel Rolls that they are specially adapted for

Food Processing Mixing Calendaring Cracking Rubber, Calendar & Mixing rolls require high tensile strength along with wear resistance. As such clear chill roll with hardness between 60 - 70 Shore°C is so cast with three different zones of white iron on the surface, mottled iron in the middle and soft gray iron at the core, to ensure good thermal conductivity. All rolls are hydraulically tested to ensure the soundness of the casting.

Double Poured Iron Rolls The inherent advantage of the steel and chill rolls respectively made way for something in between where one can get higher hardness and toughness with better roll-strength. Thus, here, the conventional composite rolls are produced by a special double-pour casting method in which two independent zones - a shell of highly alloyed iron & another a softer graphitic-grey iron core are achieved. The hardest type of roll is one in which cementite is contained in a martensitic matrix. In newly installed up-to-date mills, high speed and heavy reduction rolling is perfo