[MW:749] Re: how to find hydrogen concentration

hi friends ,
               i am plan to do project in cold cracking .. as we all know cold crack occurs mainly due to diffusible hydrogen in weld metal and haz .. i want to determine the optimum level of  hydrogen  in haz  .. is there any method(test)  to determine the safe level of hydrogen .. in the haz

On Wed, Apr 23, 2008 at 8:09 PM, Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com> wrote:

http://materials-welding.blogspot.com/2008/04/mw738-re-737-re-how-to-fin
d-hydrogen.html

Please check above link for the same.

-----Original Message-----
From: donboscomarine@vsnl.net [mailto:donboscomarine@vsnl.net]
Sent: Thursday, April 24, 2008 8:09 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:738] RE: 737] Re: how to find hydrogen concentration


Dear Mr. Bathula,

It is difficult to open a .DAT file. Will it be possible to send it as
any other attachment.

Thanks and best regards.

G. A. Soman
PRINCIPAL


----- Original Message -----
From: "Bathula Raghuram (Mumbai - PIPING)" <R.Bathula@ticb.com>
Date: Wednesday, April 23, 2008 9:23 pm
Subject: [MW:738] RE: 737] Re: how to find hydrogen concentration
To: materials-welding@googlegroups.com

>
> the formula is not appering in the message, hence resending as an
> attachment.
> -----Original Message-----
> From: materials-welding@googlegroups.com on behalf of Raghuram Bathula
> Sent: Wed 23/04/2008 20:51
> To: materials-welding@googlegroups.com
> Subject: [MW:737] Re: how to find hydrogen concentration
>
> May i know why you need this calculation? if possible please
> detaile it for
> the benifit of all members. probably the following would help you!
>
> This formula is used for detecting cracking susceptibility of
> steels and is
> valid only for certain range of steels
>
>
>
> Where *P*H is the cracking susceptibility parameter, H is the
> concentrationof hydrogen (in parts per million), *R*f is the
> restraint stress (in
> megapascals), and:
>
>
>
>
> Good luck!
>
> On Wed, Apr 23, 2008 at 3:28 PM, mech <arunmecheng@gmail.com> wrote:
> >
> > is there any mathematical formula to find  optimum level of hydrogen
> > concentration in steels
> >
> > >
> >
>
>
>
>
>
>
> >
>

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