Abstract
The aim of this work was to investigate the applicability of radial shear rolling method for deformation treatment of steel ingots containing cast structure defects. The radial-shift rolling (RSR) method is the most suitable for this purpose from the point of view of absence of restrictions on the billet length and realisable vortex flow of metal under conditions of favourable stress-strain state. An ingot with a diameter of 32 mm with an artificial transverse through defect was taken as the basic material. According to the results of the experiment, a 3D model of the final view of the defect cavity was built and the morphology of welding of its different zones was analysed. The volume of the defect was reduced from 620 mm3 to 380 mm3 . The experimental result showed that the RSR method is well suited for the closure of superficial defects with a depth of 1-3 mm. In the presence of axial defects, RSR method does not weld the defects, but stretches along the rolling direction changing the shape
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