Patent ID: 6974511
Filing Date: 2005-12-13
Classification: C21D

Abstract:
1. A process for manufacturing a steel strip with low aluminum content, comprising: hot-rolling a steel strip comprising between 0.050 and 0.080% by weight of carbon, between 0.25 and 0.40% by weight of manganese, less than 0.020% by weight of aluminum, and between 0.010 and 0.014% by weight of nitrogen, the remainder being iron and inevitable trace impurities, to form a strip; subjecting said strip to a first cold-rolling, to produce a cold-rolled strip; annealing said cold-rolled strip, to form an annealed cold-rolled strip; and subjecting said annealed cold-rolled strip to a secondary cold-rolling, wherein said annealing is a continuous annealing comprising: