Hot rolled steel plate with improved formability, which has fine grain, production of steel sheet, hot rolled and cold rolled.

摘要

Invention patent: b "hot rolled steel plate with fine grain with formality, improvement and production of steel sheet hot rolled or cold rolled" d .Hot rolled steel plate with improved formality and production process for the form, which can be easily produced with common hot strip rolling mill.Presenting a lower anisotropy of mechanical properties and diameters of ferrite grains of less than 2 am, which could not be achieved by previous technique.The steel sheet hot-rolled comprises a ferrite phase and a first phase, and has an average diameter of ferrite grains smaller than 2 am.With the ferrite grains having an aspect ratio of less than 1.5.The steel sheet hot rolled is obtained with the implementation of a reduction process under the conditions of recrystallization dynamics through the passages of the reduction of no less than five scenes in laminThe action of hot finishing.