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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 16a
SUMMARY:Key technologies for UHSS and 3rd generation AHSS CAL / CGL processing
DESCRIPTION:UHSS and 3rd generation AHSS remain the best cost-effective solution for lightweighting of Automotive body in white applications, providing excellent combination of strength and formability. These steel grades are developed and processed in order to obtain multiphase microstructures with a substantial amount of retained austenite in order to achieve best possible ductility and in-use properties. Their processing imposes some constraints compared to conventional steels among which increased alloying contents, increased soaking temperatures, higher cooling rates, coatability and operational flexibility limitations. 
Such metallurgical and operational challenges can now be overcome thanks to key, newly developed, technologies whose advantages and features will be further presented.
Induction technologies (Transverse and Longitudinal flux) allow rapid heating over a large temperature range as requested for the management of multiphase materials, thus avoiding the implementation and management of long conventional heating sections. Moreover, they allow efficient strip re-heating in the case of complex annealing cycles such as for example Q&P concepts.
Application of wet cooling technologies achieve several objectives: first, high cooling rates enable managing all the product dimensional ranges without changing the metallurgical recipe whatever the strip thickness. Also, they allow fast and continuous cooling rate between high temperature soaking down to low quenching temperature as required by 3rd generation AHSS metallurgical concepts. Moreover, newly developed wet quenching technologies allow UHSS strip coatability even with high amount of Mn and Si. 
Overall, it can be demonstrated that new processing technologies dedicated to 3rd generation AHSS allow leaner metallurgical concepts and present high potential for cost and quality improvements.
CLASS:PUBLIC
DTSTART:20230614T111000
DTEND:20230614T113000
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