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October 1997

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Subject:
Re: Alloy42
From:
tonghh <[log in to unmask]>
Reply To:
TechNet Mail Forum.
Date:
Fri, 31 Oct 1997 22:21:13 +0800
Content-Type:
text/plain
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text/plain (47 lines) 
At 11:43 AM 10/30/97 -0500, you wrote:
>Our customers have found that a good alkaline cleaner, used as hot as
>possible, and as long as possible, perhaps even used as an electrocleaner, to
>shorten the process time, is the key, after that any weak acid solution,
>Sulfuric is great, then rinse and plate.
>
>I can give you more information directly, or contact Dynavest, or their
>subsidiary Comacraft, with offices in Penang, KL, Manilla, and Singapore.
>
>Rudy Sedlak
>RD Chemical Company
   To : Rudy sedlak

    Thanks a lot for your input .I have tried that before but it do not work .
    Please elaborate further on sulphuric acid , operating % , temperature , any
    ppm of Fe or Ni the bath can tolerate because sulphuric acid will attack
alloy42
    and gives rise to Fe3+ and a yellowish brown discoloration to the alloy42 .
    Please advise .Thanks .
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