[MW:1326] Re: about heating of ss316 pipe

As per the first mail, if the heating was just to remove the surface moisture, it will not be a problem, the temperature may
 be around 100 deg C. as per ASME Sec-II part D, A-320 , the sensitization temp 425 -870 deg C, I don't think to remove the moisture from the tube surface need so much temp .& the sufficient time to for the sensitization.

 

On Wed, Nov 19, 2008 at 2:21 AM, Ali Asghari <ghariali@rocketmail.com> wrote:

hi

i think the heating the pipe isn't correct .it may occur sensitization.i think the dropping water play a good role ,that it's decrease the cooling rate in base metal,therefore the possibility of carbide cr decreases.

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From: pradip kumar gupta <pkgpanki@gmail.com>
To: materials-welding@googlegroups.com
Sent: Monday, November 17, 2008 9:32:51 PM
Subject: [MW:1322] about heating of ss316 pipe

we were welding a ss316 pipe ,and there were some water drops so we heated it with gas cutting set to evaporate, was this correct or not? if not then why? can any one tell me what will be effect of heating on ss316 pipe.

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