Development of twin roll strip caster

摘要

Strip casting is being actively pursucd by many main steelmaking country. Shanghai Iron and Steel Research Institute has been developing twin-roll strip casting process since 1984. The first stage of this project was an experimental caster, Caster, No.l, using twin rolls with the diameter of 200mm, width of 150mm. It was the primary twin-roll caster in China. The second stage was a pilot caster, Caster No.2, also using twin rolls with the diameter of 500mm, width of 250mm, casting 250mm widc strip at a thickness of 1 to 3mm. Over five hundred casts of 304 type stainless steel have been made. The cast strip can be directly cold rolled to final strip product whose quality is able to meet the national standard. The third stage was to design and build a more practical pilot caster, Caster No.3 with 600mm wide twin rolls, with diamctcr of 120mm. By June 1995, No.3 caster had been made and installed. Since July, 1995, over 60 casts of 304 type stainless steel strip have been made. Cast strips with the thickness from 2 to 5mm, with the width of 580mm have been made successfully. Both surface and internal quality of the cast strip are satisfactry. After cold rolling, the quality of the strip can meet the national standard.