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September 2006

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TechNet E-Mail Forum <[log in to unmask]>, Hfjord <[log in to unmask]>
Date:
Thu, 14 Sep 2006 14:09:24 +0200
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----- Original Message -----
From: "Ingemar Hernefjord (KC/EMW)" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, September 14, 2006 12:37 PM
Subject: Re: [TN] US Cleaning in IPA


Furthermore, I have some values about the cavitation vs. Liquids vs.
Temperature e.g. Below:


Liquid                  Formula         Boiling         Max cavitation
intensity        Temperature at which

                             reaches intensity max   for 46

                              MHz lambda/2


1. Water                H2O             100 C            100%
35 C


2. Xylen                C6H4 etc        137 C            61%
93 C


3. Ethanol              C2H5OH  78  C                    45%
21 C


4. Aceton               (CH3)2CO        56  C            44%
minus 36 C


Etc

Can send whole table to interested, or for Steve's wall


Inge

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of [log in to unmask]
Sent: den 13 september 2006 20:51
To: [log in to unmask]
Subject: Re: [TN] US Cleaning in IPA

40 MHz was the typical frequency used for augmenting solvent cleaning.
There is a classic paper by Brandreth & Johnson on removal of a
standardized particle (diamond dust) published in 1978 as I recall. Will
send you the exact reference later if you are interested-- let me know.
25-28 MHz was more typically used with aqueous systems until we got into
the more elaborate multi-frequency systems.

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