Open-ended questions tend to be perceived as open-ended time sinks.
Those people most likely to be able to give you a useful answer are
also the busiest people.
You are more likely to get a useful response if you are explicit about
what you want respondents to do (provide pointers, send info,
whatever). This will focus their effort and implicitly put an upper
bound on the time and energy a respondent must allocate to helping
you. This is good.
To understand the world the experts live in, think of expertise as an
abundant resource and time to respond as a scarce one. The less of a
time commitment you implicitly ask for, the more likely you are to get
an answer from someone really good and really busy.
On Jan 29, 12:32 pm, "muthu barathi" <muthu_bara...@rediffmail.com>
wrote:
> Dear Sir
>
> Actually this material is for Piling work. We are constructing a new
> jetty . Steel Pile material is API - 5 L PSL - 2 / Grade X-65 . Pile
> size OD - 1219mm and wall thickness - 22.22mm and also other size OD -
> 914mm and wall thickness - 22.22mm.
>
> Now I want make a WPS by carrying out PQR . So I am searching based on
> the sample pipe's MTC. The reading I have given is replica of MTC and
> the is certified by Lloyds Surveyor too.
>
> Now please tell me the correct welding electrode for SMAW and wire and
> flux for SAW process. As per API 5L PSL 2 / Grade 65. the requirement -
>
> X 65 - YS - 448 MPa. TS - 531 MPa. EL% - 23 - Impact at 0 deg.C
> 27 Joules. C - 0.22 Mn - 1.45 P- 0.025
> S- 0.015 Ti - 0.06
>
> Approved brands electrodes - ESAB and OERLIKON from these consumables
> shall be selected.
>
> While testing PQR it should not fail.
>
> Expecting your mail shortly.
>
> Thanking You.
>
> With Regards,
>
> Muthu Barathi P
>
> On Fri, 28 Jan 2011 03:28:26 +0530 wrote
>
>
> Mr. Muthu,
>
> What's the applicable specification for this material,
> ASTM/ASME/EN or any proprietary grade for any client or any vendor's
> specification.The elongation and impact properties asked are highly
> un-realistic. You never get a Carbon or Low Alloy steel with 46%
> elongation
> requirement, also, impact requirement is extremely high.
>
> I would say, if you have any design paper work, which
> indicates the grade or heat treatment of this steel the correct AWS
> type of
> welding consumables, SAW wire+flux specification etc could be worked
> out.
> Otherwise YOU SHOULD NEVER CHOOSE WELDING CONSUMABLES BASED ON THE
> CHEMICAL
> COMPOSITION ALONE.
>
> Thanks.
>
> Pradip Goswami,P.Eng.IWE
> Welding & Metallurgical Specialist
> & Consultant
> Ontario, Canada.
> Email-pgosw...@sympatico.ca,
> pgosw...@quickclic.net
>
>
>
> From: materials-welding@googlegroups.com
> [mailto:materials-welding@googlegroups.com] On Behalf Of Pablo J
> Acelajado>Sent: Thursday, January 27, 2011 10:08 AM
> >To:
>
> materials-welding@googlegroups.com>Subject: RE: [MW:9529] Requirement
>
> of suitable welding consumables SAW and SMAW
>
>
>
> January 27,
> 2011
>
> Hello there!
>
> This material is very strong one. I think
> the welding consumable suppliers can best answer this question.
>
> My understanding is that the percentage
> elongationis not required for the weld.
> Thank you.
>
> Best regards.
> PJA
>
> From:
> materials-welding@googlegroups.com
> [mailto:materials-welding@googlegroups.com] On Behalf Of Kathalingam
> Babu>Sent: Thursday, January 27, 2011 1:10
> PM
> >To: materials-welding@googlegroups.com
> >Subject: Re: [MW:9526] Requirement of
>
> suitable welding consumables SAW and SMAW
>
> Hi
>
> The elongation requirement is very stringent, it is very
> difficult to meet 46%, you have consult with the specific consumable
> suppliers
> to get 46%
>
> Thanks & Regards,
>
> K. Babu
>
> >----- Original Message -----
>
> From: muthu barathi
>
> To: materials-welding@googlegroups.com
>
> Sent: Thursday,
> January 27, 2011 4:36 PM
>
> Subject: [MW:9523]
> Requirement of suitable welding consumables SAW and
> SMAW
>
> Hi Friends,
>
> >Let me get your expertise of
>
> selection of welding consumables in this>regard.
>
> >The base material
>
> Chemical properties as given under (%):
>
>
>
>
>
>
>
>
>
> >C - 0.066
> >Si - 0.26
> >Mn -
> 1.55
> >P - 0.014
> >S - 0.004
> >Al - 0.046
> >Cr - 0.186
> >Ni - 0.015
> >Mo
> - 0.002
> >Cu - 0.020
> >V - 0.057
> >Nb - 0.065
> >Ti - 0.020
> >N -
> 0.007
> >B - 0.00025
> >Ca - 0.0025
> >CE - 0.371
>
> >MECHANICAL
> PROPERTIES
> >YIELD STRENGTH - 516 MPa
> >TENSILE STRENGTH - 625
> MPa.
> >ELONG % - 46
> >IMOPACT
>
> - (-) 10 DEGREE C - 250 JOULES
>
> >NOW PLEASE TELL ME, WHICH
>
> ELECTRODE FOR SMAW (BRAMDS ESAB, OERLIKON)>AND SAW - FLUX AND WIRE WILL
>
> SUIT AND PASS PQR TEST FOR PREPARATION OF
>
>
>
>
>
>
>
> >WPS?
>
> >PLEASE
> HELP.
> >THANKING YOU.
>
> >Dear
> Sir,
>
> >Thanking You,
>
> >Honesty is the best
> Policy
>
> >With Warm Regards,
>
> >Muthu Barathi P
> >Mobile
>
> No:00962788269821 (Jordan)
>
> >00962775401951
>
>
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