Investigation of Rolling Rounds in the Blooming Mill  Full text 

A.N. Tumko¹, O.A.Yaroshenko¹, F.A. Golubitskiy¹, V.N. Danchenko²

¹ PJSC "Dneprospetsstal"
²National Metallurgical Academy of Ukraine

UDC 621.771

Metall. Min. Ind.,  2012, Vol. 4, No. 2, pp. 20-26

Abstract

Technology rolling rounds with diameter 265, 285, 300 and 330 mm of special steels in the blooming mill 950 (before reconstruction) and 1050 (after reconstruction) was developed and tested in conditions of PJSC "Dneprospetsstal'". The effect of the deformation modes on the rejection of rolled ingot on the axial porosity, which is not brewed under deformation, was researched. The stability of peals with an oval and rectangular cross-section during rolling in a round groove of the blooming mill rolls was studied. The recommendations on sizing rolls and technological parameters of rolling rounds from structural and corrosion-resistant steels in the blooming mill are developed.

Keywords: BLOOMING MILL, ROLLING, ROUND SECTION, THE MODE OF DEFORMATION, ROLL GROOVING