Re: [MW:13079] Inconel Passivation

Dear Mr. Himan,
Cleaning is required after welding. However, we need to find if the
welded area is subjet to corrosion. I feel that if welded area needs
corrosion resistance, then electrodes for inconel welding may be
abetter option, as it improves corrosion resistance of weld area. The
working temperature and operating environment in weld zone will be
important.

S.N.Bagchi.
<snbagchi@aol.in>

-----Original Message-----
From: Himan Nikdin <himannikdin@gmail.com>
To: snbagchi <snbagchi@aol.in>
Cc: materials-welding <materials-welding@googlegroups.com>
Sent: Mon, Nov 28, 2011 3:05 pm
Subject: Re: [MW:13075] Inconel Passivation

Dear hMr. Bagchi

I attached our drawing, do you mean after completion of welding there
is no cleaning required?

Regards,
Himan

On Mon, Nov 28, 2011 at 4:11 AM, <snbagchi@aol.in> wrote:

Dear Mr. Himan,

Normally, Inconels are higkly corrosion resistant alloys, which do not
need passivation. However, you are advised to show assemby drawing near
welded area which needs to be looked into.

S.N.Bagchi.
<snbagchi@aol.in>

-----Original Message-----
From: Himan Nikdin <himannikdin@gmail.com>
To: materials-welding <materials-welding@googlegroups.com>
Sent: Sun, Nov 27, 2011 5:15 pm
Subject: [MW:13069] Inconel Passivation

Dear Friends

I have stone trap which will be made from API 5L-X52 that inner side
overlaied by Inconel, I want to know we shall clean welded separate
pipes welded area by acid pickling or any passivation is mandatory???

I will be appreciated if anybody can help me.

Thank you in advance.
Himan

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