EFFECT OF PRELIMINARY DEFORMATION OF THE CAST SEMIFINISHED PRODUCT ON THE SERVICE PROPERTIES OF WHEEL STEEL

摘要

An experimental study is made to determine how the mechanical properties of grade-T wheel steel are affected when hollow shells of this steel obtained by piercing solid semifinished products are deformed by rotary rolling. It is shown that piercing the semifinished products on the mill significantly improves the steel's impact toughness and resistance to fatigue fracture.