| 摘要 |
PURPOSE:To form a solder film on the lead surface of a work where leads are projected in plural directions by executing the stage drying the work by dipping it in a creamy solder in plural times by rotating the work and subjecting to melting treatment with vapor bath heating. CONSTITUTION:The stage 11 coating a creamy solder on the lead L1 located at the lower part of a work W by dipping it in the creamy solder 52 and the creamy solder coated on this lead L1 is dried at a stage 12. The lead L2 on the adjacent side is located at the work lower part by rotating 90 deg. the work W at a stage 13 and at a stage 14 the work W is descended and the lead L2 is dipped into a solder 52 to coat the solder. The solder coated at a stage 15 is dried. A solder is coated on the leads L1-L4 of the work W by repeating said process in order, pre-heated at a stage 22 and the creamy solder of the leads L1-L4 is subjected to melting treatment with vapor bath heating at a stage 23. And a residual flux, etc., are cleaned at a stage 24.
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