Characters experience, Li Huan

1978.2 ~1982.1,department of mechanical engineering, Tianjin University, majoring in welding.

1983.9 ~ 1986.5, Master of Engineering, department of mechanical engineering, Tianjin University.

1993.4 ~1997.11,department of mechanical engineering, Tianjin University, master of welding, doctor of engineering.

1982.2 ~ 1983.9, card clothing factory of Lanzhou Baiyin textile machinery, technical cadre.

1986.5 ~1988.11,teaching assistant, department of mechanical engineering Department of Welding, Tianjin University.

1988.12 ~1994.11,department of mechanical engineering Welding Teaching and Research Section, Tianjin University, lecturer.

1994. 12 ~ 2002.6, Associate Professor, department of mechanical engineering Welding Teaching and Research Section, Tianjin University.

Since July 2002, Professor (Deputy Director) of Department of Materials Processing and Automation, School of Materials, Tianjin University.