METHOD AND DEVICE FOR PRODUCING HOT-ROLLED STRIPS AND PLATES

摘要

The invention relates to a method for producing hot-rolled strips and plates in a production plant consisting of a continuous casting installation for slabs between 100 and 180 mm thick, descaling sprays, a single- or multiple-stand rolling unit with or without integrated upsetting unit, a cooling section, a heating furnace and a Steckel mill. Between the continuous casting installation and the heating furnace only the marginal surface layer of the previously descaled slab is deformed in-line, recrystallised during and after deformation and then cooled in several stages to a temperature below the Ar3 transformation point and temporarily maintained at said temperature until the microstructural transformation of the recrystallised close-grained austenite in the ferrite/perlite has been completed.