张欢,南京钢铁联合有限公司首席电气专家、高速线材厂电气主任工程师、劳模创新工作室带头人,他追随世界轧钢技术升级换代的步伐,在自动化领域改革创新,为南钢轧钢自动化控制水平的进步做出了杰出的贡献,先后荣获南京市劳模、江苏省文明职工、江苏省劳模、全国五一劳动奖章获得者、全国劳动模范等荣誉称号。他作为技改技术负责人,把南钢高线厂从一条上世纪八十年代末期装备水平的生产线, Zhang Huan, chief electrical engineer of Nanjing Iron & Steel United Co., chief electrical engineer of high-speed wire rod mill and head of model worker’s innovation studio, he followed the pace of upgrading and updating of rolling technology in the world and carried out reform and innovation in the field of automation for the automation of steel rolling at Nangang Has made outstanding contributions to progress, has won the Nanjing model workers, civilized workers in Jiangsu Province, Jiangsu Province model workers, the National Labor Medal winner, the national model worker and other honorary titles. He as technical director of technical transformation, the high-speed steel plant in Southern Steel from a late eighties of the last century equipment level production line,