METHOD AND APPARATUS FOR PRODUCING HIGH-CARBON STEEL WIRE ROD

摘要

PROBLEM TO BE SOLVED: To provide a method and an apparatus for producing a high-carbon steel wire rod achieving reduced environmental load and having high strength and high ductility.

SOLUTION: The production method comprises: processing the high-carbon steel wire rod containing 0.65-1.0 mass% C by applying a processing strain ε of ≤1.5, thereby raising the steel wire temperature to a range of 200-450°C by heat generated by the processing; subsequently raising the steel wire temperature to a range of 800-950°C by continuously using a heating device; and subsequently processing the same by applying a processing strain ε of 0.5-2.0 within a temperature range of 600-750°C. After the processing treatment is performed within the temperature range of 600-750°C, the steel wire rod is cooled to 550°C, preferably at a cooling rate of ≤100°C/sec.

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