Root concavity

[rizwanm...@gmail.com]

What is the main reasons of coming root concavity or suckback, and who is much responsible for this root hot Welder or filling capping welder?
Thanks

[Rajnish Dixit]

Dear Rizwan,

There may be many reasons for root concavity or suck back appearance in weld joints but exact reasons might be found by analysis based on minimum following aspects:
1. Joint design
2. Size Vs Root gap
3. Welding Process
4. Gas flow
5. Welding Speed
6. Current used
7. Welder’s Technique
8. Position
9. Skill of welder

Thanks,
Best Regards,
Rajnish Dixit

On Tuesday, 9 June, 2020, 10:15:20 pm GMT+7, <rizwanm...@gmail.com> wrote:

What is the main reasons of coming root concavity or suckback, and who is much responsible for this root hot Welder or filling capping welder?

Thanks

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