Also in addition to the Maulik’s reply, please take a note that more is the weaving width in that particular area which implies more heat input for that area due to low travel speed, lesser weld metal deposit (that depends on your travel speed) and slower is the cooling rate which results in the grain coarsening in that area. When impact is taken from that part of the weld, there are more chances to getting it to a failure.
Hence we restrict it.
Thanking you,
Rgds,
Prashant
| |
From:
Sent: Thursday, April 12, 2012 6:42 PM
To: Materials & Welding
Subject: Fwd: [MW:14105] Re: Regarding Electrode Weaving
As your weaving width increases there will be maximum chances of slag entrapment at both sides (left & right) because of prior solidification of weld before welding of respective edges. Your weld pool should be in fused state during weaving to avoid slag entrapment.
Regards,
Maulik
Welding Engineer
Larsen & Toubro
---------- Forwarded message ----------
From: Karthik <karthik6684@yahoo.com>
Date: Wed, Apr 11, 2012 at 9:38 AM
Subject: [MW:14091] Re: Regarding Electrode Weaving
To: Mohit Aggarwal <aggarwalmohit05@gmail.com>, "george.dilintas@gr.bureauveritas.com" <george.dilintas@gr.bureauveritas.com>, AA karandish <aa.karandish@yahoo.com>, Abuhanip bin Abdul <abuhanip@labuanship.com>, Ahmed Osman <a.osman81@yahoo.ca>, akcme <akhilcme@gmail.com>, Ali Asghari <asghariali@rocketmail.com>, Aly <mhaskar.aly@gmail.com>, AMIT PAHUJA <amitpahuja2@gmail.com>, Amos Majola <amos@turnmill.co.za>, Anil Hegde <nottyanil@gmail.com>, antony jenis <antonyjenis@gmail.com>, Arun Jacob <jacob.igcs@gmail.com>, Arunachalam A <arunvani@gmail.com>, Ary Agung Prasetyo <ary_mt05@yahoo.com>, asad azmi <azmiasadayub@gmail.com>, Brl Pp <refazosaris@gmail.com>, Dindo <dindodelacruz@gmail.com>, Dinesh Somwanshi <som.din@gmail.com>, duc hoang <hoangvanduc79@gmail.com>, ENAYAT ZAREI <zarei.enayat@gmail.com>, Endri Prasetyo <endri.prasetyo@gmail.com>, Fitria Rahman <t.chintaqa@gmail.com>, fredric <fredric.prabu@bwgindia.com>, "Garry Mat Eng." <garryirwin342@gmail.com>, Himan Nikdin <himannikdin@gmail.com>, james gerald <gerry_tup@yahoo.com>, John Henning <jhenning@deltak.com>, jose <joseseban@gmail.com>, Kaja Mohideen <kaja@asw.sa>, kannayeram gnanapandithan <kgpandithan@gmail.com>, Kavin Murugam <kavin202082@yahoo.com>, ketan shah <ai.ketan@gmail.com>, khemici badri <khemicib@yahoo.fr>, lakshman kumar <lakshmankumar4@gmail.com>, Madhusudan Rout <madhusudan.rout@gmail.com>, mahesh sanghvi <sls.mahesh@gmail.com>, Mahmoud <mqreis@gmail.com>, materials-welding <materials-welding@googlegroups.com>, meemo prasad <meemoprasad@gmail.com>, Mehdi Emami <mehdi.emami@yahoo.com>, mpk mpk <ranmi2007@gmail.com>, MRG <mrgupta_2007@yahoo.com>, muthu barathi <muthu_barathi@rediffmail.com>, "Nadgauda, Subhas" <subhas.nadgauda@jacobs.com>, Nandesh Kumar <nandeshkumar@rocketmail.com>, Narendra Gohil <ngohil@qafco.com.qa>, Neilash Kumar <neilashkumar@yahoo.com>, Nizam Mohamad <ahmad.nizam83@yahoo.com>, pgoswami <pgoswami@quickclic.net>, Pieper QSI <info@pieper-qsi.nl>, "prabhakarmet@gmail.com" <prabhakarmet@gmail.com>, prem nautiyal <prem_nautiyal26@yahoo.com>, "R.Lenin" <lenin8319@gmail.com>, rajeev arora <rajeevarora007@gmail.com>, rajkumarantoni <antonitr@gmail.com>, Ramchandra vichare <vicharerke@indiatimes.com>, Ramin Kondori <raminkondori@gmail.com>, ravi varman <ravimvarman@gmail.com>, S C Balawat <scb12345@gmail.com>, sanggyu LEE <sgleehong@gmail.com>, santhosh kumar <santhoshgu7@gmail.com>, SAQIB SHIRAZI <saqibshirazi83@hotmail.com>, sevak hiren <hirensevak80@gmail.com>, shanmuga mari <85.ssmari@gmail.com>, snbagchi <snbagchi@aol.in>, Srinivas Engr <srinivas.gmsrini@gmail.com>, srinivasu <srinivasu.mech@gmail.com>, "T. Mahendran" <cbemahendar@yahoo.com>, U WYNN-NAING <u.wynn-naing@total.com>, vaibhav Joshi <vnjoshi.leo@gmail.com>, venkat ramana <venkatgps.ramana@gmail.com>, Vijay Katkar <katkar.vijay22@gmail.com>, "vinit.deshpande" <vinit.deshpande@akersolutions.com>, Vino Varghese <vinopvarghese@gmail.com>,
Hi,
As per Code it is a Non essential variable and Code doesn't specify the weave bead width limits. But you have to specify on the WPS (Stringe/Weave bead). Its a good engineering practice to limit the weave bead width to control the heat input.
Thanks & Regards,
(Karthik)
Karthikeyan.S
QA/QC Manager
German-Thai Boiler Engineering Cooperation Limited.
Rayong Factory ;
379 Moo.6 Soi 8, Tambol Pananikom,
Nikompattana, Rayong 21180
Tel : +66 38 897 035-9 Ext. 137
Fax : +66 38 897 034
Hand Phone: 0066 892512282
From: Mohit Aggarwal <aggarwalmohit05@gmail.com>
To: christopher_rajku...@yahoo.com; george.dilintas@gr.bureauveritas.com; manojac...@gmail.com; welding_engr_r...@charter.net; AA karandish <aa.karandish@yahoo.com>; Abuhanip bin Abdul <abuhanip@labuanship.com>; Ahmed Osman <a.osman81@yahoo.ca>; akcme <akhilcme@gmail.com>; Ali Asghari <asghariali@rocketmail.com>; Aly <mhaskar.aly@gmail.com>; AMIT PAHUJA <amitpahuja2@gmail.com>; Amos Majola <amos@turnmill.co.za>; Anil Hegde <nottyanil@gmail.com>; antony jenis <antonyjenis@gmail.com>; Arun Jacob <jacob.igcs@gmail.com>; Arunachalam A <arunvani@gmail.com>; Ary Agung Prasetyo <ary_mt05@yahoo.com>; asad azmi <azmiasadayub@gmail.com>; Brl Pp <refazosaris@gmail.com>; Dindo <dindodelacruz@gmail.com>; Dinesh Somwanshi <som.din@gmail.com>; duc hoang <hoangvanduc79@gmail.com>; ENAYAT ZAREI <zarei.enayat@gmail.com>; Endri Prasetyo <endri.prasetyo@gmail.com>; Fitria Rahman <t.chintaqa@gmail.com>; fredric <fredric.prabu@bwgindia.com>; Garry Mat Eng. <garryirwin342@gmail.com>; Himan Nikdin <himannikdin@gmail.com>; james gerald <gerry_tup@yahoo.com>; John Henning <jhenning@deltak.com>; jose <joseseban@gmail.com>; Kaja Mohideen <kaja@asw.sa>; kannayeram gnanapandithan <kgpandithan@gmail.com>; Karthik <karthik6684@yahoo.com>; Kavin Murugam <kavin202082@yahoo.com>; ketan shah <ai.ketan@gmail.com>; khemici badri <khemicib@yahoo.fr>; lakshman kumar <lakshmankumar4@gmail.com>; Madhusudan Rout <madhusudan.rout@gmail.com>; mahesh sanghvi <sls.mahesh@gmail.com>; Mahmoud <mqreis@gmail.com>; materials-welding <materials-welding@googlegroups.com>; meemo prasad <meemoprasad@gmail.com>; Mehdi Emami <mehdi.emami@yahoo.com>; mpk mpk <ranmi2007@gmail.com>; MRG <mrgupta_2007@yahoo.com>; Muhammed Ibrahim PK <ibrat...@gmail.com>; muthu barathi <muthu_barathi@rediffmail.com>; "Nadgauda, Subhas" <subhas.nadgauda@jacobs.com>; Nandesh Kumar <nandeshkumar@rocketmail.com>; Narendra Gohil <ngohil@qafco.com.qa>; Neilash Kumar <neilashkumar@yahoo.com>; Nizam Mohamad <ahmad.nizam83@yahoo.com>; pgoswami <pgoswami@quickclic.net>; Pieper QSI <info@pieper-qsi.nl>; "prabhakarmet@gmail.com" <prabhakarmet@gmail.com>; prem nautiyal <prem_nautiyal26@yahoo.com>; R.Lenin <lenin8319@gmail.com>; rajeev arora <rajeevarora007@gmail.com>; rajkumarantoni <antonitr@gmail.com>; Ramchandra vichare <vicharerke@indiatimes.com>; Ramin Kondori <raminkondori@gmail.com>; ravi varman <ravimvarman@gmail.com>; S C Balawat <scb12345@gmail.com>; sanggyu LEE <sgleehong@gmail.com>; santhosh kumar <santhoshgu7@gmail.com>; SAQIB SHIRAZI <saqibshirazi83@hotmail.com>; sevak hiren <hirensevak80@gmail.com>; Shadab Alam Ansari <shadabansaria...@gmail.com>; shanmuga mari <85.ssmari@gmail.com>; snbagchi <snbagchi@aol.in>; Srinivas Engr <srinivas.gmsrini@gmail.com>; srinivasu <srinivasu.mech@gmail.com>; T. Mahendran <cbemahendar@yahoo.com>; U WYNN-NAING <u.wynn-naing@total.com>; vaibhav Joshi <vnjoshi.leo@gmail.com>; venkat ramana <venkatgps.ramana@gmail.com>; Vijay Katkar <katkar.vijay22@gmail.com>; vinit.deshpande <vinit.deshpande@akersolutions.com>; Vino Varghese <vinopvarghese@gmail.com>;
Sent: Wednesday, April 11, 2012 9:11 AM
Subject: Regarding Electrode Weaving
Respected Experts,
We generally mention in WPS/PQR weaving of Electrode should be three times the Electrode dia...I have query is Code restrict for this ,anywhere written in code aur it is on general experience...
Thanks & Regards
Mohit Aggarwal
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