Method for separating dross in soldering process

Details Method for separating dross in soldering process Method for separating dross in soldering process

2011-07-05

2011-07-05

Wyszomierski, George (Department: 1733)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

C075S403000, C075S690000

Reexamination Certificate

active

07972411

ABSTRACT:
Proposed is a method for separating dross in a soldering process for a printed circuit board using a tin bath containing liquid tin. The method includes collecting dross produced during the soldering process; grinding the dross to tin ash in the tin bath for allowing a portion of tin contained in the tin ash to be melted again to join the liquid tin; and scooping up and recycling the tin ash not melted in the tin liquid. The method precludes a waste of tin resources and high manufacturing costs which might otherwise arise from directly scooping up dross of high tin content.

REFERENCES:
patent: 5755889 (1998-05-01), Johnson
patent: 6890430 (2005-05-01), Mawatari
patent: 201283248 (2009-08-01), None
Machine translation of CN 201283248 Y published Aug. 2009.

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