Re: [MW:15248] cause of crack

dear sir
i think you need tpo keep post heaqt 150- 200 c
and you shold keep inter pass temp 250-300 c
regards

On 8/23/12, suresh <sureshndb@gmail.com> wrote:
> Dear Members,
> we found some weld cracks on parent metal (adjacent to weld bead)
> after weeding and depth of the crack is max 20 mm from the edge of the
> plate.
> i would like to know the type of crack and causes of the crack.
> please see the attached pictures.
>
> Material:- IS 2062 Gr B to Itself
> Thickness:- 25mm to 25mm
> Joint Type:- Closed Corner
> Grove Type:-Single side bevel
> Electrodes:- E 7018
> Preheating:- 80 to 100 Deg Cent
> Electrodes Baking:- As per manufacturer recommendations.
> waiting for your valuable reply.
>
> Thanks and Regards,
> Suresh,
>
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