Method for the manufacture of formable steel

Details Method for the manufacture of formable steel Method for the manufacture of formable steel

C - Chemistry, Metallurgy

21

D

148/10

C21D 9/48 (2006.01) B21B 1/46 (2006.01) C21D 8/04 (2006.01) B21B 1/38 (2006.01)

Patent

CA 2003819

METHOD FOR THE MANUFACTURE OF FORMABLE STEEL ABSTRACT OF THE DISCLOSURE In the manufacture of formable steel in the form of a strip with a final thickness of between 0.5 and 1.5 mm, in a number of continuous successive process stages, molten steel is continuously cast into a slab of less than 100 mm thickness and the slab is rolled into the strip. To simplify the apparatus required, and improve process control, the slab is cooled down to a rolling temperature of between 300°C and a temperature Tt at which at least 75% of the material is converted into ferrite, and the roiling of the slab into strip comprises at least one reduction stage with a thickness reduction of over 30%. The rolling exit speed is less than 1000 m/min. After recrystallisation, the strip is coiled.

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