根据华北地区热处理协作组的安排,一九七九年十月六日到十日在呼和浩特市召开华北地区45~#与40Cr钢热处理经验交流会。到会代表共121人。除华北地区之外还邀请了区外代表参加。 会议期间,呼和浩特机床附件厂王世杰,北京内燃机总厂高令怡、内蒙古工学院许 According to the arrangements of the North China Heat Treatment Cooperative Group, the 45 ~ # and 40Cr steel heat treatment experience exchange meetings in North China were held in Hohhot from October 6 to October 10, 1979. A total of 121 delegates to attend. In addition to outside of North China also invited representatives from outside the area to participate. During the meeting, Hohhot Machine Tool Accessories Factory Wang Shijie, Beijing Internal Combustion Engine Plant GAO Ling Yi, Inner Mongolia Institute of Technology Xu