| 摘要 |
<p>[PROBLEMS] Mixing of lead into a lead-free solder tank must be absolutely avoided. Even when the shape of lead-free stick solder is differentiated from that of lead-containing stick solder, in the event of disposing of a lead-containing stick solder in the vicinity of the solder tank, it has happened that the lead-containing stick solder is put in the solder tank. [MEANS FOR SOLVING PROBLEMS] The solder tank at its superior part is provided with a passage part through which any lead-free stick solder with configuration different from that of lead-containing stick solder can pass but any lead-containing stick solder cannot pass. At the time of inputting in the solder tank, the inputting is performed through the passage part.</p> |
