Weld Weave

[Adi]

Dear all

if the weld weave length increased What will happen to weld and what
is the corrective action to be taken for weld
please advise
is any code reference, please tell me

Adi

[manoj vernekar]

as you increase weave that mean your travel speed is low, direct ur are increasing heat input.

 

more heat input more problem

 

regards

 

manoj

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Manoj.Vernekar

[joshi jaydeep]

EN standards recommend to limit the weave width to 3 times electrode diameter

 

ASME Code doesn't suggest the limit of weaving but  as a good engineering practice,  it is restricted to 3 x Electrode Dia in case of SMAW and 12-13mm Max. in case of FCAW / GMAW.

 

Effect of weaving:

1. Reduction in number of passes to be deposited

2. increasing the heat input

3. Higher weaving also results in reduction of shielding gas at the edges if the parameters are not properly set

4. It affect the side wall fusion, need to ensure the proper dwell time at the ends

5. Weaving speed need to be control otherwise causes the arc deflication

6. Higher weaving causes the reduction in impact properties

 

Jaydeep Joshi | TDW India Limited

Plot No 16 | Phase –III | Alindra – Savli G.I.D.C | Taluka : Savli | Vadodara – 391 775

Board : +91-2667- 619900 | Fax : +91- 2667- 619501| Extension : 7845

E-Mail : jaydee...@tdwilliamson.com  | www.tdwilliamson.com

Cell: +91 9978959626

P    Before printing, Think about ENVIRONMENTAL responsibility

  

[BHARAT GOLE]

More weaving will also cause more dilution !
Regards

Bharat B. Gole

 

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Date: Mon, 6 Dec 2010 11:05:27 +0530
Subject: Re: [MW:8520] Weld Weave
From: jaydeep...@gmail.com
To: material...@googlegroups.com

[PRAMODH NAIR]

As per the ASME Sec II Part C page no 11 in the general notes indicates weld layer shall be no more than 2.5 times of the diameter of the core wire. 

M.R.Pramodh

Sr.QC-Insallah Gas Compression

---

From: BHARAT GOLE <bhara...@hotmail.com>
To: Material Welding <material...@googlegroups.com>
Sent: Mon, December 6, 2010 7:00:34 AM
Subject: RE: [MW:8522] Weld Weave

[joshi jaydeep]

Good information....Just a slight correction, It is on page no. 18 of 2007 ASME Sec II C.

[Ahmed Husain]

Can you please specify the paragraph no/detail. I have 2004 addition, and I could not find it in general notes.
 

A. Husain

---

From: joshi jaydeep <jaydeep...@gmail.com>
To: material...@googlegroups.com
Sent: Tue, December 7, 2010 6:19:02 AM
Subject: Re: [MW:8539] Weld Weave

[joshi jaydeep]

SFA 5.1, General notes of Fig 1 (PAD FOR CHEMICAL ANALYSIS OF WELD METAL), Note No (e)

 

 

Jaydeep

[Adi]

Thank Q all

If weave length is increased what will be corrective action
By taking Hardness values can we accept the weld?

Please advise
Adi.............

On Dec 7, 1:51 pm, Ahmed Husain <ahmr...@yahoo.com> wrote:
> Can you please specify the paragraph no/detail. I have 2004 addition, and I
> could not find it in general notes.
>  A. Husain
>
> ________________________________

> From: joshi jaydeep <jaydeep.p.jo...@gmail.com>

> To: material...@googlegroups.com
> Sent: Tue, December 7, 2010 6:19:02 AM
> Subject: Re: [MW:8539] Weld Weave
>
> Good information....Just a slight correction, It is on page no. 18 of 2007 ASME
> Sec II C.
>
>  
>
> On Mon, Dec 6, 2010 at 6:09 PM, PRAMODH NAIR <pramodhnai...@yahoo.com> wrote:
>
> As per the ASME Sec II Part C page no 11 in the general notes indicates weld
> layer shall be no more than 2.5 times of the diameter of the core wire. 
>
> >M.R.Pramodh
> >Sr.QC-Insallah Gas Compression
>
> ________________________________

> From: BHARAT GOLE <bharatg...@hotmail.com>

>
>
>
> >To: Material Welding <material...@googlegroups.com>
> >Sent: Mon, December 6, 2010 7:00:34 AM
> >Subject: RE: [MW:8522] Weld Weave
>
> >More weaving will also cause more dilution !
> >Regards
>
> >Bharat B. Gole
>
> > 
>
> >________________________________
>
> Date: Mon, 6 Dec 2010 11:05:27 +0530
>
>
>
> >Subject: Re: [MW:8520] Weld Weave

> >From: jaydeep.p.jo...@gmail.com

> >To: material...@googlegroups.com
>
> >EN standards recommend to limit the weave width to 3 times electrode diameter
>
> >ASME Code doesn't suggest the limit of weaving but  as a good engineering
> >practice,  it is restricted to 3 x Electrode Dia in case of SMAW and 12-13mm
> >Max. in case of FCAW / GMAW.
>
> >Effect of weaving:
> >1. Reduction in number of passes to be deposited
> >2. increasing the heat input
> >3. Higher weaving also results in reduction of shielding gas at the edges if the
> >parameters are not properly set
> >4. It affect the side wall fusion, need to ensure the proper dwell time at the
> >ends
> >5. Weaving speed need to be control otherwise causes the arc deflication
> >6. Higher weaving causes the reduction in impact properties
>
> >Jaydeep Joshi | TDW India Limited
> >Plot No 16 | Phase –III | Alindra – Savli G.I.D.C | Taluka : Savli | Vadodara –
> >391 775
> >Board: +91-2667- 619900| Fax : +91- 2667- 619501| Extension : 7845

> >E-Mail : jaydeep.jo...@tdwilliamson.com  |www.tdwilliamson.com

> For more options, visit this group's bolg athttp://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.- Hide quoted text -
>
> - Show quoted text -- Hide quoted text -
>
> - Show quoted text -

[John Henning]

Gentlemen,

 

The requirements for welding test specimens contained in ASME Section II Part C are not intended to be used as restrictions, requirements, or best practice for making production welds.  The conditions set forth are intended to provide a “level playing field” for classification and comparison of welding electrodes and filler metals.  Please read, for example, SFA-5.1 Annex A, Paragraph A6 and specifically A6.1 through A6.9. 

 

John  

[Ahmed Husain]

Dear Mr. Jaydeep,

 

I have attached fig 1 and related notes. This is from edition 2004. I didn't find about weaving. Can you please copy the paragraph or notes and mail it.

 

 Ahmed Husain

---

From: joshi jaydeep <jaydeep...@gmail.com>
To: material...@googlegroups.com

Sent: Tue, December 7, 2010 2:16:51 PM

Subject: Re: [MW:8566] Weld Weave

[Prakash Hegde]

Hi!

Excessive weaving is not recomended due to increase in heat in put and this incresed heat input affects the Impact property Therefore whenever  weld require Impact test ,the excessive  weaving is not recomended (Max of 3 Xelectrode core dia)

However for weld w/o impact does not  have any restriction of weaving but excessive weaving also causes distortion and require proper stiffner ,preheating and post heating to avoid distortion. hence excessive weaving  is not recomended as good engg practice

 

Regards

 

Hegde P.B.

---

From: Adi <adin...@gmail.com>
To: Materials & Welding <material...@googlegroups.com>
Sent: Sun, 5 December, 2010 8:30:44 PM
Subject: [MW:8501] Weld Weave

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[Prakash Hegde]

Hi!

If you have already welded the joint with increased weaved bead and you want toi accept the same in such situation  you have to

i) Do you require Impact  for weld ? if yes carry out the mock up with same parameter of welding used and test the coupon (It should meet the requirement)The same results can be converted in to PQR

ii) If the weld does not require Impact, in such case Heat input is not essential and check the hardness of HAZ and weld ( and it should be in acceptable range) .,Check for crack, by UT/RT .this way you can ensure the soundness of the weld and accept

Regards

 

Hegde P.B.

---

From: Adi <adin...@gmail.com>
To: Materials & Welding <material...@googlegroups.com>

Sent: Tue, 7 December, 2010 4:56:01 PM
Subject: [MW:8567] Re: Weld Weave

> >>materials-welding+unsub...@googlegroups.com

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> >>applicable code/standard/contract documents.
>
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> >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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> >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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> >For more options, visit this group's bolg at
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> >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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> for educational purposes only, Users must take their own decisions w.r.t.
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