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November 2002

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Subject:
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 12 Nov 2002 15:24:15 +0200
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Lino

How long is a piece of string? U/S cleaning can be effective or it may
be a simple waste of time and money or it may destroy some components.
Take your pick.

What is your cleaning medium? Is it degassed? Is it filtered or does it
contain particulate matter? What is the type of transducer? What is the
power input? What is the size of tank? What is the temperature? How far
are the assemblies from the transducers? How are the assemblies oriented
with respect to the transducers? What are you cleaning off from the
assemblies? What is the smallest interstice from which you wish to
remove contaminants? What are the dimensions and topography of the
interstices? etc.

Sorry!

Brian

LINO REBOREDO wrote:
> Hi,
>
> i want to improve the cleaning process in my smt assembly line. Up to my
> readings ULTRASONICs 40 Khz. sweep frecuency  gives the very best results.
> Is this as effecient as is resported.?
>
> regards
>
> Lino Reboredo
> PCB Plant Eng
> PCB ICID.
>
>
>
>
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