Laminar flow well

Details Laminar flow well Laminar flow well

2008-11-17

2010-10-19

Stoner, Kiley (Department: 1793)

Metal fusion bonding

Process

Applying or distributing fused filler

C228S037000, C228S056100

Reexamination Certificate

active

07815096

ABSTRACT:
It has been observed that turbulent solder flow, particularly at the opening of a conventional flow well, correlates to a greater degree of Cu dissolution of the PTH barrels of a PCB, especially those that are aligned with the opening. A more laminar solder flow is created to more evenly distribute the solder flow and thus reduce the rate of Cu dissolution near the flow well opening, particularly during a PTH rework process. In one aspect, a flow well for a soldering machine is provided comprising a flow distribution element, wherein solder flowing into the flow well is distributed by the flow distribution element to provide a more laminar flow.

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