PRODUCTION OF API 5CT J55 GRADE FOR QUENCH AND TEMPERING APPLICATION

摘要

A system and a method for producing high carbon steel with minimum surface and/or edge defects are disclosed. High carbon steel is provided to a hot rolling system. The steel is subsequently descaled, cropped, finished-rolled, and coiled to form steel coils. Throughout the whole process, the coiling of the steel is conducted at a temperature above 620 °C to substantially prevent formation of surface and edge defects on the steel.