| 摘要 |
PURPOSE: A flux having a high reactivity and a low fusion point is provided so as to prevent oxidation of the material and improve wettability of the surface thereof, thereby improve weldability in welding a material having a low fusion point. CONSTITUTION: In a flux composition for low temperature welding, the flux composition for low temperature welding comprises basic components of 10 to 30 wt.% of KCl, 5 to 15 wt.% of NaCl, 20 to 40 wt.% of BaCl2 and 3 to 30 wt.% of LiCl; one or more chlorides selected from the group consisting of 3 to 15 wt.% of ZnCl2, 3 to 10 wt.% of CaCl2 and 1 to 10 wt.% of AlCl3; 3 to 20 wt.% of one or more fluorides selected from the group consisting of LiF, NaF, MgF2, AlF3, KF and CaF2.
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