Hi!
For Burn Through in SMAW, when the material being welded is too thin while using bigger diameter electrode than what is required. For automatic welding, machine malfunctions may cause Burn Through like when machine travel or object being welded stops suddenly while there is continuous welding process. Also, for those requiring tack welds, when there is insufficient weld prior to full welding.
Thanks.
From:
Sent: Friday, December 31, 2010 2:00 PM
To:
Subject: Re: [MW:9042] reason for burnthrough defect
Dear Sankar,
The following are the main reason for burn through:
1. Very slow travel speed and high current.
2. High heat input.
3. Large root opening.
4. Uneven root face.
5. Unskilled welder or welding operator.
Thanks & Regards.
Manoj
On Thu, Dec 30, 2010 at 7:30 PM, shankark <shankark.qc@gmail.com> wrote:
we got BT defect in smaw process welding using E6010 for root, and
E7018 for hotpass, capping. what could be the reason for this defect
and how we can avoid it.
thanks,
shankar
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