| 摘要 |
PURPOSE: A powder composition for welding metal wire for accessory is provided to maintain the original shape of welding part although the cutting pressure or pressing force is applied. CONSTITUTION: A powder composition for welding metal wire for accessory comprises copper powder 30~40 weight%, zinc powder 20~30 weight%, tin powder 20~30 weight%, boric acid 10~20 weight%, borax 5~10 weight%, grease 3~8 weight%, and castor oil 2~4 weight%. When the thick of a metal wire increases or decreases as 0.5~1m/m, the input amount of grease and castor is varied as 5~10 weight%, respectively.
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