| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a nickel material strip capable of imparting excellent solderability as the one for a nickel material to be soldered such as a lead of an Li ion secondary battery. SOLUTION: Regarding the method for manufacturing a nickel material strip to be soldered having excellent solderability, a nickel material strip composed of≥99 mass% nickel is annealed in a reducing atmosphere having a dew point of≤-30°C, and final cold rolling is thereafter applied at a draft in the range of 2 to 30%, thus a nickel material strip having a hardness of 80 to 190 Hv is obtained. Preferably, the nickel material has a composition comprising≤0.03% C,≤0.01% Si and≤0.04% Mn, and the balance Ni with inevitable impurities. COPYRIGHT: (C)2006,JPO&NCIPI |
