在一机部机械院主持下,于一九七九年四月二十日至二十三日,在河南省郑州市召开了三钢球长距离送丝机鉴定会。参加会议的有来自全国各地的高等院校、科研所、电焊机厂和使用部门等五十个单位的干部、工人、技术人员共六十三人。会议听取了郑州机械研究所,驻马店电焊机厂、郑州水工机械厂和郑州汽车制造厂关于三钢球长距离送丝机的研究、试 Under the chairmanship of a machinery department of the Machinery Department, the appraisal meeting of three-ball long-distance wire feeder was held in Zhengzhou City, Henan Province from April 20 to January 23, 1979. A total of 63 participants from 50 units of cadres, workers and technicians from institutions of higher learning, research institutes, welding machine factories and departments in use all over the country attended the conference. The meeting heard the Zhengzhou Machinery Research Institute, Zhumadian Welding Machine Factory, Zhengzhou Hydraulic Machinery Factory and Zhengzhou Automobile Factory on the three-ball long-distance wire feeder research, test