Hi, What Mr.Prem said is right in case of excess weaving.This can be controlled during welding.I think in india most of them follow string bead to make it fast and control the heat input.(sorry i dont know about some other country welder's technique(string or weave),thats why i could not noted other than india) But in my experience weaving in GTAW gives a good bead appearance than string and its a matter of Welder's ability to control the weaving technique and heat input. So far we dont find any problem even we did so many impact test on various material and thickness with the weaving technique.
Thanks & Regards, (Karthik)
Karthikeyan.S QA/QC Manager Getabec Energy Co.,Ltd. 379,Moo6,Soi8,Nikhomphatana, Rayong-21180, Thailand. Phone: 0066 38 897035-8 (Off) Fax: 0066 38 897034 Hand Phone: 0066 892512282
--- On Tue, 10/19/10, limesh M <limesh78@gmail.com> wrote:
From: limesh M <limesh78@gmail.com>
Subject: Re: Re: [MW:7653] Electrode Weaving Range
To: materials-welding@googlegroups.com
Date: Tuesday, October 19, 2010, 8:36 PM
Dear All, Ok well,that means, weaving may affect the toughness of the weldmetal. What about your opinion on GTAW ?Is this weaving applicable to GTAW? Regards, Limesh
On Mon, Oct 18, 2010 at 7:50 AM, PREM SHANKARDUTT NAUTIYAL <prem_nautiyal@rediffmail.com> wrote:
Hi Limesh
If you are crossing the weaving barrier as per manufacturer recommendation,i.e, 2.5 to 3 X dia of electrode, your travel speed becomes less and you induce "more" Heat Input in the weld joint as specified in the WPS. Thus if your weld calls for Impact requirements, then you are in trouble and you will get poor values.
Also excess weaving causes coarse ripples and poor bead appearance, which needs to be dressedup for clearing Visual Examination.
Regards
Prem Nautiyal
Thermax Ltd., Pune
On Sun, 17 Oct 2010 18:55:45 +0530 wrote
>As per code section 1 , under repair of defects, PW 40.3.4.d, pl refer for SMAW ( 4xcore dia),also given in code section 8, for GTAW general engineering practice-width shall not be more than 10mm
kgp
On Sat, Oct 16, 2010 at 6:32 PM, limesh M wrote: Dear All, I heard about weaving ,which is applicable in SMAW.If I am crossing the weaving barrier as per manufacturer recommendation,ie, 2.5 X dia of electrode or 3 X dia of electrode what would happen? Is weaving applicable in GTAW? If applicable what would be the weaving range? Regards, Limesh -- To post to this group, send email to materials-welding@googlegroups.comTo unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.comFor 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. -- > To post to this group, send email to materials-welding@googlegroups.com> To unsubscribe from this group, send email to materials-welding-unsubscribe@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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-- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding-unsubscribe@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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