hard-facing of duplex steels

[p_cha...@mail.bg]

Dear colleagues,

has somebody experience with overlaying of duplex stainless steel
2205? Can you send me some details regarding the fillers and the
welding parameters or an example of a WPS?

Preliminary thanks
Parvan Chavdarov

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[pgos...@sympatico.ca]

 
Hi Pravan,
 
Duplex stainless steel can be overlayed on a substrate of C.S or LAS. Alternatively you may hard face on duplex S.S with due precaution because the interface would have a tendency to embrittle.
 
From your query I would presume that you want to overlay duplex S.S on a substrate of C.S or LAS. Under those circumstances the following would be be appropriate:-

• Barrier layer with E-309L/309LMo, use 1/8" diameter
• Subsequent layers with E-2209 , 1/8" OR 5/32" dia.

 
The barrier layer chemistry is greatly affected by the dilution rate which depends on the welding parameters. Hence choose the optimum welding parameters as per consumable manufacturer. The same applies for the subsequent layers also.
 
Follow the guidelines in ASME Sec-IX for qualification of welding procedures.
 
Thanks
 
 
Pradip Goswami,P.Eng
Welding & Metallurgical Engineer/Specialist
Ontario Power Generation Inc.
Temp Mobile No (In India till 16 March)-9830976290
 


 
> Date: Sun, 7 Mar 2010 03:36:14 +0200
> From: p_cha...@mail.bg
> To: material...@googlegroups.com
> Subject: [MW:4457] hard-facing of duplex steels

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> To post to this group, send email to material...@googlegroups.com
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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.

[p_cha...@mail.bg]

Dear Mr. Goswami, thanks for the reply.
 
Actually the case is that I have to perform hardfacing of duplex SS on a substrate of duplex SS. Can you share your experience? What do you recommend for the heat input, filler and welding parameters?
 
Thanks in advance
Parvan Chavdarov
 
Цитат от pgos...@sympatico.ca:

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[suneel gore]

Pl let me know what alloy you want to overlay on Duplex? Regards Suneel Gore  --- On Tue, 9/3/10, p_cha...@mail.bg <p_cha...@mail.bg> wrote:

---

The INTERNET now has a personality. YOURS! See your Yahoo! Homepage.

[p_cha...@mail.bg]

Duplex S31803 on duplex S31803.
 
Best regards
Parvan Chavdarov
 
Цитат от suneel gore <novat...@yahoo.co.in>:

>       Your Mail works best with the New Yahoo Optimized IE8. Get it 
> NOW! http://downloads.yahoo.com/in/internetexplorer/

>
> --
> To post to this group, send email to material...@googlegroups.com
> To unsubscribe from this group, send email to 
> materials-weld...@googlegroups.com
> For more options, visit this group's bolg at 
> http://materials-welding.blogspot.com/
> 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.
>



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