Patent ID: 9481916
Filing Date: 2016-11-01
CPC Classification: B32B,C21D,C22C,C23C,Y10T

Claim Text:
1. Method of thermomechanical shaping a final product with very high strength comprising the steps of: providing a coated hot-rolled and/or cold-rolled steel strip or sheet comprising (all percentages in wt. %): cutting the coated steel strip or sheet to obtain a steel sheet blank; shaping the blank at ambient temperature in a first deformation step to form an ambient shaped coated steel sheet blank; thermomechanical shaping of the ambient shaped steel sheet blank to a final product with its final properties; wherein the thermomechanical shaping comprises heating the ambient shaped blank to a temperature above Ac1 to at least partially austenitise the ambient shaped blank, shaping the heated blank into a product at elevated temperature in a second deformation step and rapid cooling the shaped heated product to obtain the final product with its final properties.