Production in-line of wide stainless steel coilsFunded under: ECSC-STEELRES 7C
The study reports on the feasibility of producing wide stainless steel sheets by an in-line casting-rolling process, using Al/Ti treated austenitic and ferritic stainless steel at a range of casting speeds. The technology now in use for mass-steels is not found to be suitable for stainless steels. Heavy cracking, micro-cracking and powder incrustations make the resulting product unacceptable. The research project attempted to ensure improved thermal control of the mould, develop a special casting powder for stainless steel, examine the specific metallurgical problems of hot-shortness (sulphur), and develop more gentle cooling techniques to prevent micro-cracking. While 40 mm cast thickness was achieved, this is far from the 2.5 mm thickness of end product that was the goal, and in-line reduction in the secondary cooling zone was required. Hot rolling and further (cold) working to end product dimensions caused no problems. Hot ductility is sufficient to allow 2.5 mm to be achieved. The resulting mechanical and corrosion-resistance properties are better than those obtained on continuously cast material.
Bibliographic Reference: EUR 15220 EN (1995) 71 pp., FS, ECU 10
ISBN: ISBN 92-826-9520-4
Record Number: 199510377 / Last updated on: 1995-03-16
Original language: en
Available languages: en