Dear All,
If the rust stains also observed in the pipe itself as well as on the weld joints. What would be the root cause for that.
Dust observed on the pipe. is that may the reason for the rust stains and what the suspected deterioration rate for that.
How to prevent all of these?
Thanks.
On Mon, Oct 27, 2014 at 2:20 PM, 'Agustin Jimenez' via Materials & Welding <materials-welding@googlegroups.com> wrote:
Hi
I recomended clean whith citric acid if rust is deep, remove the weld .
Agustin jiménez
Level 2 Ut, rt , pt, vt, mt
CWI
'Prakash Hegde' via Materials & Welding <materials-welding@googlegroups.com> escribió:
>Hi!
>In addition to improper use of Wire brush,Excessive grinding caused the removal of Cr Oxide film and after that Improper Pickling and passivation causes such type of rusted surface
>Regards
>
>Hegde Prakash
>
>
>
>--------------------------------------------
>On Sun, 26/10/14, Vino Varghese <vinopvarghese@gmail.com> wrote:
>
> Subject: Re: [MW:22173] Rust on Stainless Steel Weld Joints
> To: materials-welding@googlegroups.com
> Date: Sunday, 26 October, 2014, 8:27 PM
>
> Hi!!
> Most probably the wire brush/grinding wheel
> (Carbon Steel) would have played the culprit.
> Please check that SS wire brush of good quality
> has been used.
> RegardsVino
>
> On Sat, Oct 25, 2014
> at 10:55 PM, Weaver, mark <Mark.Weaver@honeywell.com>
> wrote:
>
>
>
>
>
> Incorrect filler metal or contaminated brush/grinding
> discs. PMI the weld metal to determine metallurgy.
>
>
>
> Sent from my iPhone
>
>
> On Oct 25, 2014, at 10:51 AM, "Sahavas v s" <sahavas143r@gmail.com>
> wrote:
>
>
>
>
>
>
> Hi,
>
>
>
> It has been observed on all weld joints were corroded with
> rust, but components dont have any rust. can any one answer
> me the reason why weld joints have only corrosion not on
> base metal?
>
>
>
> Pipe : A312 TP 316 L
>
> Filler wire : ER316L
>
> Weld Type : Butt weld
>
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