目前,各类矿山、冶金、建筑等设备,磨损报废的零部件数量和品种,是相当惊人的。这不仅消耗了大量贵重金属、能源和更换磨损件的辅助时间,影响了成本的降低,还给备件的准备和维修增加了负担。国营兴航建筑设备厂(河北定兴农机厂)与中国有色金属工业总公司情报研究所合作,采用马鞍山矿山研究院姚光华工程师提供的焊条新配方技术,于1985年10月开始进行TDO—1型耐磨电焊条试制工作,经过一 At present, all kinds of mining, metallurgy, construction and other equipment, wear and tear scrap the number of parts and varieties, is quite amazing. This not only consumes a significant amount of precious metal, energy and auxiliary time for changing worn parts, it affects the cost reduction and also adds to the burden of preparation and maintenance of spare parts. State-owned Xinghang Construction Equipment Factory (Hebei Dingxing Agricultural Machinery Factory) cooperated with China Nonferrous Metals Industry Corporation Intelligence Research Institute to adopt the new formula technology of welding rod provided by engineer Yao Guanghua of Maanshan Mining Research Institute. In October 1985, TDO- 1 wear-resistant electrode trial work, after a