Quenching and self-tempering (QST) of beams in the rolling heat
For some years now, the section market has been moving towards an increased use of products with greater thicknesses, higher yield strength and increased toughness. In order to obtain higher yield strength in traditional hot rolling, especially for greater thicknesses, the addition of substantial amounts of alloying elements is necessary. However, these additions decrease weldability and toughness. Production costs are also increased to a barely competitive level. In order to combine high yield strength, good toughness and weldability in an economical way, the quenching and self-tempering (QST) treatment after the last pass is considered to be the appropriate solution. At the Grey section mill of Arbed-Differdange the QST process is presently being developed for the full range of beams and columns by ARBED (Luxembourg) in collaboration with CRM (Belgium) and British Steel (United Kingdom).
Bibliographic Reference: EUR 13939 EN (1992) 56 pp., FS, ECU 6.25
ISBN: ISBN 92-826-3621-6
Record Number: 199210295 / Last updated on: 1994-12-02
Original language: en
Available languages: en