METHOD OF HOT ROLLING OF LOW-CARBON STRIP STEEL AT MULTISTAND MILL 2000

摘要

FIELD: process engineering.;SUBSTANCE: invention relates to metallurgy. Proposed method comprises rolling at multistand continuous mill with seven-stand finishing group with preset total reductions E_Σ and thermal conditions. In rolling steel with thickness h=5…12 mm with carbon equivalent C₀=C+Mn/9+Si/3=0.13…0.17, E_Σ is taken to equal 72…83%. Note here that rolling temperature at sixth stand is made equal T₆=1050-5h, degrees, rolling termination temperature males T_rol-term=908-8,6h, degrees, while strip coiling temperature makes T_ct=634-2.9h, degrees.;EFFECT: higher plasticity and strength.;1 ex