[MW:15308] Re: cause of crack

Dear sir,

           I think you have to do double bevel instead of single bevel,normally if the plate thickness is more than 16mm we go for double bevel and also please check the raw material tc or send sample of 50x250 for mechanical and chemical test for best results.

On Thursday, 23 August 2012 17:30:41 UTC+5:30, suresh 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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