Electrode Weaving Range

[limesh M]

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

[STR]

There is no limit as per code for electrode weaving, its only mentioned in some clients specifications.

 

 

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S.Tulasi Ramu
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[kannayeram gnanapandithan]

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

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[PREM SHANKARDUTT NAUTIYAL]

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
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To post to this group, send email to material...@googlegroups.com
To unsubscribe from this group, send email to materials-weld...@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.






--
>
To post to this group, send email to material...@googlegroups.com
>
To unsubscribe from this group, send email to materials-weld...@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.
>

PREM S NAUTIYAL
CELL : 9769316004

[limesh M]

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

[Karthik]

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 <lime...@gmail.com> wrote:

[rob...@westernp.com]

this is not addressed in codes that I know of.

With GTAW, the weave width depends upon the size of the cup when
"walking the cup" and should not have any affect on the weld in that
you can control heat with travel speed with GTAW.

On Oct 16, 6:02 am, limesh M <limes...@gmail.com> 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*

[limesh M]

Dear All,

 

In GTAW,which parameter I have to take in to consideration for limiting weaving range.ie, gas cup size or diameter of tungsten electrode(non consumable) or filler wire diameter(consumable) ?My client inspector says filler wire(consumable),but my mind says tungsten electrode(non consumable),some reply from our forum says gas cup size.I am totally confused.

 

If weaving is not applicable in GTAW, can I put string for all beads in my WPS?

 

 

Please advise me.

 

 

Regards,

 

 

Limesh

[Karthik]

Hi, At my point of view Electrode play a big role in weave bead technique.Because Weave bead is obtained by moving the electrode in a weaving type/motion. In WPS you can mention string or weace bead.Normally in pipeline weldings wps specified as "first 3 beads Weave and rest string". So you can specify both or single type.

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, 11/2/10, limesh M <lime...@gmail.com> wrote:

From: limesh M <lime...@gmail.com> Subject: Re: [MW:0] Re: Electrode Weaving Range To: material...@googlegroups.com

[Clubb, Archie]

Ok but to restrict heat input limit weave to 2.5 times the WIRE diameter.

 

A

 

 

---

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[shibu simon]

Hi, Where this statement in code, "first 3 beads Weave and rest string"   Regards,   shibu  --- On Tue, 2/11/10, Karthik <karth...@yahoo.com> wrote: