RE: [MW:4522] hard-facing of duplex steels

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

> Pl let me know what alloy you want to overlay on Duplex?
> Regards
> Suneel Gore 
>
> --- On Tue, 9/3/10, p_chavdarov@mail.bg <p_chavdarov@mail.bg> wrote:
>
>
> From: p_chavdarov@mail.bg <p_chavdarov@mail.bg>
> Subject: RE: [MW:4511] hard-facing of duplex steels
> To: materials-welding@googlegroups.com
> Date: Tuesday, 9 March, 2010, 9:41 PM
>
>
> 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 pgoswami@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_chavdarov@mail.bg
>>> To: materials-welding@googlegroups.com
>>> Subject: [MW:4457] hard-facing of duplex steels
>>>
>>> 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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>>
>>
>>
>>
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