Abstract
The influence of the lubrication condition during hot-rolling in non-crystallization ferrite region on r-value and texture for cold rolled and annealed steel sheet has been studied. Hot rolling was carried out under the condition applying tallow lubricant, applying boron-nitride lubricant or non-lubricating.
Textures through the thickness have investigated by mainly used vector method (3D crystal orientation analysis). In the case of hot rolling without lubricating, the texture of the hot rolled sheet is heterogeneous through the thickness. However when cold rolling is introduced after hot rolling, the heterogeneity through the thickness decreased.
Furthermore, the transition in the surface texture of the steel sheets during cold rolling was investigated.
Consequently, even though in the case of non-lubricating hot rolling in non-recrystallization ferrite region, heterogeneity through the thickness decreased applying cold rolling after hot rolling and the advantageous texture for r-value is formed homogeneously through the thickness. However the luburicating condition during hot rollig affects on disappearence of the shear texture in the surface during cold rolling.
