一九八三年十二月,在沈阳市科委的主持下,对鞍山钢铁研究所、沈阳机电学院与沈阳焊条厂、齐齐哈尔车辆厂协作研制的“结557Mo 450吨钳夹式大平板车专用手工电焊条”进行了鉴定。参加鉴定会的有来自高等院校、科研单位、生产使用工厂和有关领导机关共十三个单位三十位代表。 December 1983, under the auspices of the Shenyang Municipal Science and Technology Commission, the Anshan Iron and Steel Institute, Shenyang Institute of Mechanical and Electrical and Shenyang electrode factory, Qiqihar Vehicle Works collaboratively developed “knot 557Mo 450 tons clamp-type large flat-panel car special hand Welding electrodes ”were identified. There are thirty representatives from 13 units and institutes of higher learning, research institutes, factories for production use and relevant leading organs participating in the appraisal meeting.