Development of medium-to-high carbon hot-rolled steel strip on a thin slab casting direct strip production complex

ABSTRACT

Medium-to-high carbon hot-rolled steel strip was developed on a thin slab casting direct strip production complex at Essar Steel Algoma Inc. to meet different specifications and special customer requirements. The effects of chemistry, casting and hot rolling process parameters on microstructure and mechanical properties were studied. Soft core reduction, secondary cooling, casting speed, as well as hot rolling and coiling temperature were optimised to achieve the required mechanical properties and other requirements such as ultrasonic test after electric resistance welding, wear resistance and corrosion resistance. These new developed medium-to-high carbon steel grades have extensive applications in oil and gas industries, general manufacturing, construction, automotive and mining equipment.

KEYWORDS:

• Medium-to-high carbon steel
• thin slab casting direct rolling
• processing parameters
• microstructure
• mechanical properties

Acknowledgements

The authors acknowledge the support of Metallography Lab, the DSPC operation team and Quality Assurance and Technical Service Department at Essar Steel Algoma Inc. (Sault Ste. Marie, Canada).

Disclosure statement

No potential conflict of interest was reported by the authors.