Production method of high-carbon tool and die steel T12A wire rod

• Main Authors: ZHANG YUMING, ZHAO LIHUA, SUN ZENGMIAO, GONG YANJIE, HUO LIGUO, TIAN XINZHONG, MA HONGLEI, DONG QING, ZHENG JIAXING, JIA DONGTAO, WANG XIAODAN, ZHAO HAOQIAN
• Format: Patent
• Language: Chinese; English
• Published: 05.03.2024
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING

The invention discloses a production method of a high-carbon tool and die steel T12A wire rod. The production method comprises the working procedures of cogging rolling and wire rod rolling. Wherein in the blooming and rolling process, steel billet cooling is carried out before the finish rolling pass, and rolling is carried out after the steel billet is cooled to 900-930 DEG C; in the wire rolling process, the finish rolling temperature is 950 +/-15 DEG C, and the spinning temperature is 900 +/-10 DEG C; after spinning, feeding into a Stelmor cooling line, fully opening 1-3 groups of heat preservation covers, fully opening 1-3 # fans, closing the rest fans and the heat preservation covers, controlling the cover feeding temperature to be 600 DEG C +/-20 DEG C, and controlling the roller way speed to be 0.20-0.25 m/s. By controlling the proper cogging rolling process and wire rod rolling process, the obtained tool and die steel hot-rolled wire rod is good in surface quality, uniform in metallographic structure