| 摘要 |
PROBLEM TO BE SOLVED: To provide an effective solution since prevention of dross generated from a molten solder in a melting furnace or a flow soldering apparatus is an important problem. SOLUTION: In a dross prevention method of a molten solder, a large number of ceramic members fabricated into a generally spherical shape are floated on the liquid surface of the molten solder so as to cover the entire surface or parts of the liquid surface. According to this dross prevention method, in the melting furnace, for example, when the ceramic members are floated on the entire liquid surface of the molten solder to cover the entire surface, the generation of dross is reduced to an amount (5-10% of the conventional amount) compared to a case when the ceramic members are not floated thereon. COPYRIGHT: (C)2007,JPO&INPIT
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