Friday, December 31, 2010

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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[MW:34820] RE: 34813] Clarification in Rate of heating and cooling.

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