Re: [MW:14318] Rust on SS welded joints

Dear Mr. Masilamani,

The problem is dust on the SS welded joints after 2 months. you may
check the enviroment cleanless and protection cover the production
proper.
--
George Xue (Xue Guoliang)
Suzhou CXGL Mechanical Engineering Co., Ltd.
Email: cxueguoliang@gmail.com
Skype: xuegl2001

2012/5/19 samuvel masilamani <samuvel.masilamani@gmail.com>:
> Dear Experts,
>
> we are facing a problem in SS welded joints. most of the joints are found
> rusted ( layer of rust) after 2 months duration. we checked for the wrong
> usage of grinding discs,power brush. but everything was found ok.Then we
> checked PMI, then ferrite test as requested by the client and the results
> were positive.The pipe material is TP316L, the filler wire usedis ER316L,
> Electrode E316L-15
>
> we proposed the Pickling & passivation as the only solution ,but client is
> still not satisfied.Is there any other possiblity for the rust formation? Is
> the redrying temperature& time have any effect on the chemical composition
> change?
>
> kindly clarrify
>
> Regards,
> Sam
>
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.