Dear.All, First this welding work done by an unqualified welder .we have to check the root cause like approved WPS is used for this ,preheating is done or not as per WPS or any interuption in welding was there or not Rajesh
--- On Thu, 8/23/12, suresh <sureshndb@gmail.com> wrote:
From: suresh <sureshndb@gmail.com>
Subject: [MW:15117] cause of crack
To: materials-welding@googlegroups.com
Date: Thursday, August 23, 2012, 7:00 AM
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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