Alloy Forging Steel Roll

Forged steel rolls refer to the rolls produced by forging. Forging can forge metallurgical defects such as looseness and shrinkage inside the steel ingot and crush the cast structure to obtain high-quality rolls with dense structure and uniform composition. The rolls have better toughness, surface hardness uniformity and fatigue resistance than cast steel rolls. In order to meet the specific requirements of different rolling mills and rolling conditions, different elements can be alloyed to the roll for high performance. The production process of forged steel rolls includes smelting, ingot casting, forging, post-forging heat treatment, rough machining, final heat treatment and finishing. The equipment used for the production of forged rolls and the process parameters must mmet the requirements for the chemical composition, mechanical properties, organization, metallurgical quality, dimensional tolerances, internal stress distribution, and surface state. A certain amount of carbon and alloying elements have different effects on the structure and properties of the forged rolls. Carbon can increase roll hardness and strength and reduce plasticity, improving wear resistance. manganese can increase hardenability and strength. Silicon acts as a deoxidizer increasing strength. Molybdenum can increase hardenability and thermal hardness. Vanadium can control the grain size of steel and increase strength.