Run-Out Length for SMAW Process

Kurniatullah Sirajudin

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Apr 10, 2016, 4:55:34 AM4/10/16

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Dear Expert,

A week ago, i received comment regarding welding for smaw process.

My client ask to me, run-out length for smaw process.

I don't know what is run-out length.

Please advise me

Thank you & Regards

Kurniatullah Sirajudin

Maulik Thakkar

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Apr 10, 2016, 12:25:07 PM4/10/16

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Dear sir,

Recommended run in run out length for base metal thickness;
> 100 mm is min 150 mm
< 100 mm is min 100 mm

Or you can apply simple logic:

Thickness of base metal / each layer height = No of layers * 10-20 mm (staggering length at each layer depending upon the process)

Regards,
Maulik

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Dindo

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Apr 10, 2016, 11:48:26 PM4/10/16

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Run out length is the time to do a length of weld in a certain length of time, e.g. If a welder welded a 2 inches of weld in 1 minute, then your run out length is 2 inch per minute. Just time your welder from when he starts his weld to the time he stops, then measure how long his weld is.

Kannayeram Gnanapandithan

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Apr 11, 2016, 1:36:27 AM4/11/16

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to calculate heat input, for every rod burning ,u have to measure the length and height and width

THANKS & BEST REGARDS,

KG.PANDITHAN, IWE, AWS-CWI, CSWIP 3.1,

CONSULTANT-WELDING & QUALITY

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prem_nautiyal26

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Apr 13, 2016, 12:07:37 PM4/13/16

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Hi

Refer ASME Sec IX 2015 edition.

There is No such terminology called run out length mentioned !

Please ask your client for code reference.

Regards

Prem Nautiyal

9769316004

Sent from Samsung Mobile

John Henning

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Apr 13, 2016, 1:59:14 PM4/13/16

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One method of heat input control is often referred to as the “run of the rod” method or the run out length. This method uses the provisions of ASME Section IX QW-409.1(b)(2). Basically, you measure the length of weld and length of SMAW electrode(s) consumed that then is the basis for determining the minimum length of weld that must be deposited per length of electrode burned. See below for Code reference.

Enjoy - John

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MUNHOZ Sergio TECHINT

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Apr 13, 2016, 11:51:46 PM4/13/16

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Run-out length is the length of weld deposited from one electrode, usually used to control the heat input .

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prem_nautiyal26

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Apr 14, 2016, 6:56:41 AM4/14/16

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Hi

If you refer DIN EN ISO 15609-1 Spec. And qualifications of welding procedures clause 4.5.1 process 111; the run out length of electrode consumed or travel speed shall be mentioned in your procedure.

Vishwas Keskar Welding Manager Pune India

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Apr 24, 2016, 11:50:42 PM4/24/16

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This is related with heat input.
What is your design calls?
Is impact testing is called in design drawing ?
If yes , qualify WPS with QW 409 supplementary essential variables
Here travel speed is related to run out length

Vishwas Keskar Welding Manager Pune India

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Apr 13, 2020, 8:17:53 AM4/13/20

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PL. EXPLAIN MORE

What is this ?

> 100 mm is min 150 mm
< 100 mm is min 100 mm

Or you can apply simple logic:

Thickness of base metal / each layer height = No of layers * 10-20 mm (staggering length at each layer depending upon the process)

On Sunday, April 10, 2016 at 8:25:07 PM UTC+4, Maulik H. Thakkar wrote:

Dear sir,

Recommended run in run out length for base metal thickness;
> 100 mm is min 150 mm
< 100 mm is min 100 mm

Or you can apply simple logic:

Thickness of base metal / each layer height = No of layers * 10-20 mm (staggering length at each layer depending upon the process)

Regards,
Maulik

On Apr 10, 2016 2:25 PM, "Kurniatullah Sirajudin" <kurniatull...@gmail.com> wrote:

Dear Expert,

A week ago, i received comment regarding welding for smaw process.

My client ask to me, run-out length for smaw process.

I don't know what is run-out length.

Please advise me

Thank you & Regards

Kurniatullah Sirajudin

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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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james gerald

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Apr 14, 2020, 12:08:50 AM4/14/20

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I am not sure with the below mails but I can give explanation to Run-out Length.

In SMAW process, the distance welded by a single electrode (350/450mm length) and it is related to welding speed

Thanks & Regards

J.Gerald Jayakumar

On Monday, April 13, 2020, 07:17:45 PM GMT+7, Vishwas Keskar Welding Manager Pune India <vvkes...@gmail.com> wrote:

PL. EXPLAIN MORE

What is this ?

> 100 mm is min 150 mm
< 100 mm is min 100 mm

Or you can apply simple logic:

Thickness of base metal / each layer height = No of layers * 10-20 mm (staggering length at each layer depending upon the process)

On Sunday, April 10, 2016 at 8:25:07 PM UTC+4, Maulik H. Thakkar wrote:

Dear sir,

Recommended run in run out length for base metal thickness;
> 100 mm is min 150 mm
< 100 mm is min 100 mm

Or you can apply simple logic:

Thickness of base metal / each layer height = No of layers * 10-20 mm (staggering length at each layer depending upon the process)

Regards,
Maulik

On Apr 10, 2016 2:25 PM, "Kurniatullah Sirajudin" <kurniatull...@gmail. com> wrote:
Dear Expert,

A week ago, i received comment regarding welding for smaw process.

My client ask to me, run-out length for smaw process.

I don't know what is run-out length.

Please advise me

Thank you & Regards

Kurniatullah Sirajudin

--
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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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George Dilintas

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Apr 14, 2020, 12:08:50 AM4/14/20

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in order no to get a run stop crater on the load-bearing weld, you tack at the end of the weld run two plates. so the welder does not stop the arc on the load-bearing weld but on the additional plate which is removed afterwards and does not make part of the structure.

There is also the run-on plate

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Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

Kannayeram Gnanapandithan

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Apr 14, 2020, 1:08:46 AM4/14/20

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Volume of weld metal deposited per burnt length of each Electrode. ISO 1101-1,2 maybe referred also

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Dindo

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Apr 14, 2020, 11:49:57 PM4/14/20

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Run out length is the S in below formula, it is the length of the weld (mm or inches) with the corresponding time to do that length of weld (seconds or minutes)

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Chris Sabu

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Apr 15, 2020, 12:01:41 AM4/15/20

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I think 350/450mm is the length of welding rod not necessarily the length of deposited length which can vary as per the thickness of layer deposited.

Regards

Chris

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THANKS AND REGARDS

CHRIS SABU

0559695451

Kannayeram Gnanapandithan

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Apr 15, 2020, 12:24:45 AM4/15/20

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This may not be accurate due to larger variation in Arc voltage

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Karthik

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Apr 15, 2020, 2:28:54 AM4/15/20

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It’s practically 80% usage for SMAW.

Sent from Yahoo Mail for iPhone

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harenath jha

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Apr 15, 2020, 2:28:55 AM4/15/20

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From which refrence this formulae has been taken??

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Dindo

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Apr 15, 2020, 11:27:00 PM4/15/20

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QW-409.1 (a) - ASME Section IX

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Kannayeram Gnanapandithan

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Apr 16, 2020, 8:07:25 AM4/16/20

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Dindo, this is not formula for runout length, it is alternative method to find out Heat input. Generally, for Manual welding process, to find out Heat input, it is always better to use run out length method.

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harenath jha

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Apr 16, 2020, 12:03:26 PM4/16/20

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Sir how we can find heat input in manual method. It's formulae

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Dindo

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Apr 16, 2020, 12:03:26 PM4/16/20

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you are right Kannayeram, it is not a formula for run out length, it is the formula use to determine the heat input, I've used this formula everyday when I was still working offshore during the 90's

welding speed = length of weld deposited (mm or inches) ÷ length of time to deposit the weld (seconds or minutes) = mm(inches)/minute (run out length)

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Kannayeram Gnanapandithan

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Apr 17, 2020, 2:32:35 AM4/17/20

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Ref 409.1. increase in heat input OR an increase in volume of weld metal deposited per unit length of weld over that qualified.

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Regino Millan

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Apr 17, 2020, 4:47:19 AM4/17/20

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Dear All,

Anyone had experience welding steel 4130 and titanium and what type of consumables used

Please advisd

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