Continuous cooling of low carbon steel wire rod

US4332630A · kind A · utility

Assignee

• Centre De Recherches Metallurgiques-Centrum Voor Research in De Metallurgie · BE

Inventors

• Marios Economopoulos · Liège, BE
• Nicole Lambert · Waremme, BE

Key dates

• Filing date: Oct 24, 1980
• Grant date: Jun 1, 1982
• Expiry date: Oct 24, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D9/525
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Low carbon steel (C.ltoreq.0.4%) wire rod at 800.degree.-880.degree. C. f a rolling mill is deposited in loose turns on a conveyor where it is slowly cooled until the austenite to ferrite transformation is at least 80% complete and the ferrite grain size is at lest ASTM 9 and is then rapidly cooled to 350.degree.-560.degree. C. Thereafter, the wire rod, e.g. on the conveyor or in coils, is subjected to a slow-cooling stage functioning as an overaging stage.