Request for Information

[G Gughan]

Dear Experts,

It's a very nice platform to gain & share knowledge.

I have a query regarding the weld bead length. What is the maximum weld bead/weave length in Power Piping? (ASME B 31.1)

or 

Is there any thumb rule for weld bead length?

Your idea/advice will be highly welcomed & appreciated.

Be safe & have a healthy Life

Thanks,

Kind Regards,

G.Gughan

[Babur Khan]

Greetings,

Weld bead width or length? 

Muhammad Babur Khan

Sent from my iPhone

On 12 Jan 2023, at 11:19 AM, G Gughan <ggug...@gmail.com> wrote:



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[Vishwas Keskar Welding Manager WELDING]

it seems the query is related to Weaving Technique !
So responce is as below 

For SMAW -

The Engineer shall address weaving width in WPS.

In general , weaving is permitted up to 3-4 Times the core diameter of the electrodes.

You may write WPS addressing as :

Root pass and Hot pass - Stringer bead technique

Fill up passes - Weaving Technique -  Maximum 6 Times   the core diameter of the electrodes.

This is in general  rule

Contract/Bid/Specification document shall  prevail over Normally followed weaving rules

Thanks and regards

Vishwas -IWE

International Welding Engineer 

[G Gughan]

Weld bead width?

To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/508A2E26-370D-4480-BDB4-62F5B6C0097E%40gmail.com.

[GENE MATSKO]

Arc Welding 101: Determining weave bead width - The Fabricator

https://www.thefabricator.com/thewelder/article/...

Gene Matsko

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[james gerald]

Use of string / Weave weld bead according to ASME Sec.IX is considered non essential variable which is considered as the requirement of ASME B31.1.

See below snap shot.

But Client Specification will have control over the Bead width. For eg see snapshot

Some consumable Manufacturer's Welding Handbook's also provides some guidance.

Normally Weaving will have an effect on the below.

1. Weld pool control depending on the Fluidity of weld liquid metal.

2. For low temperature metals will have an effect on the Charpy Impact properties as Weave width increases the Travel speed will be low and hence the Heat Input will be higher which reduces the cooling rate and hence aids in coarsening of grains and hence the charpy Impact properties.

3. Will have a problem in positional welding.

Thanks & Regards

J.Gerald Jayakumar

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