| 摘要 |
PROBLEM TO BE SOLVED: To provide a feeding device for molten unleaded solder that prevents oxide from being formed in feeding a molten unleaded solder from a solder tank to a detector of impurity metal concentration in the unleaded solder. SOLUTION: In the feeding device for molten unleaded solder, after the molten unleaded solder sucking/discharging pipe A2, a sample container 4 and molten unleaded solder sucking/discharging pipe B3 in the measuring section 30 are filled with an inert gas by the control of a gas controller section 31, the molten unleaded solder is sucked from the solder tank 1 through the sucking/discharging pipe A2, with the impurity metal concentration measured inside the measuring section 30. Then, through the control of the gas controller section 31, the molten unleaded solder inside the measuring section 30 is discharged into the solder tank 1. Thereafter, the sucking and discharging operations of the molten unleaded solder are repeatedly performed in a specific time cycle. COPYRIGHT: (C)2004,JPO
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