The main advantage of restriction of weaving is to prevent slag entrapment at edges of weld edge. As weaving increases there may be maximum chances of slag entrapment since weldpool not remain longer in molten state which in virtue not allowed float the slag at surface. i.e maximum chances of overlapping of welding progression on solidified slag entrapped surface at any point of instant.
Regards,
Maulik
Welding Engineer
Larsen and Toubro Limited
On Mon, Apr 16, 2012 at 8:50 PM, yanfei Xiu <yanfeixiu@gmail.com> wrote:
ALL ASME code didn't specify such requirement....Weaving should be limited to three times the dia of the electrode..besides the Heat input,the resulting residual stress will be less.2012/4/15 kannayeram gnanapandithan <kgpandithan@gmail.com>as per section 9, there is no restriction, but in construction code
like section 8,UCS in repair welding it weaving width is restricted
4Xcore dia of smaw electrode. it is good engineering practice to
restric weaving width to reduce heat input, and welder fatigue
Pandithan
Cethar limited
> 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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