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上海交通大学、上海自行车研究所和南京铜材厂根据科技合作协议的精神于3月31日在南京铜材厂试制成功 MC—81低熔点铜基合金焊料。该焊料主要用于自行车前叉、车架等接头的焊接。其焊接强度高,合金浸润性好,比重轻,抗冲击性能、接头机械物理性能等均优于现用的黄铜焊料,是较理想的自行车焊接材料。由于焊料的选材合理,合金熔点比现用焊料低一百多度,在焊接生产中能耗量少,节电
Shanghai Jiao Tong University, Shanghai Bicycle Research Institute and Nanjing Copper Works successfully developed MC-81 low-melting-point copper-based alloy solder on March 31 at the Nanjing Copper Works in accordance with the spirit of the S & T cooperation agreement. The solder is mainly used for welding bicycle front fork, frame and other joints. Its welding strength, alloy wetting, light weight, impact resistance, joint mechanical and physical properties are better than the current brass solder, is an ideal welding materials for bicycles. Due to the reasonable selection of solder, the melting point of the alloy is lower than the current solder more than 100 degrees, less energy consumption in the welding production, saving