RE: [MW:15121] cause of crack

Mr.Suresh,
 
please maintain preheat 100-150 deg c and interpass temperature 250 deg min.

Thank & Best Regards,

 

M Veera SAMY- Bureau Veritas.

Coimbatore

 

 

 

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Date: Thu, 23 Aug 2012 17:30:41 +0530
Subject: [MW:15117] cause of crack
From: sureshndb@gmail.com
To: materials-welding@googlegroups.com

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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