Enfluence of graded deformation of ingot 8K7,2, made of out-of-furnace processed steel 8Cr3MoV, on homogeneity of structure and mechanical properties of forging

This diploma thesis deals with the influence of graded deformation of 8Cr3MoV steel rolling mills on the structure and mechanical properties. The theoretical part of this thesis describes general requirements for rolling mills, commonly used material, and the making of hot rolling mill rolls with emphasis on 8Cr3MoV steel. The second part is a report on experimental material and used methods. Then the results are presented. The influence of distance from the longitudinal axis of ingot and graded deformation on the forged shaft on the structure and mechanical properties are discussed at the end of this thesis, as well as a comparison of structure and mechanical properties of ingot and forged shaft