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由中国机械工程学会热处理专业学会化学热处理分会与机电部武汉材料保护研究所联合举办的“全国第四届化学热处理会议”于1989年5月下旬在武汉召开。来自全国各地的与会代表近千人。
The Fourth National Chemical Heat Treatment Conference was held in Wuhan in late May 1989 by the Chemical Heat Treatment Branch of the Heat Treatment Institute of China Mechanical Engineering Society and the Wuhan Institute of Material Protection. Nearly 1,000 delegates from all over the country came together.