This is due to impurities in base metal. In 6mm thickness weld, HICC is very remote.by seeing the orientation, it is type I crack due to impurities.
On Sun 4 Mar, 2018 11:28 pm anthony chundal, <anthony.chundal@gmail.com> wrote:
you have to do control preheating and also cover the same with thermal insulation wool immediately after welding if you are not doing the immediate PWHT,Regards,On Sun, Mar 4, 2018 at 2:15 PM, 'Muhammad Asif' via Materials & Welding <materials-welding@googlegroups.com> wrote:
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Control maitenance and post heat temperature.Regards,On Fri, Mar 2, 2018 at 10:16 AM, George Dilintas<dilintas@gmail.com> wrote:most probably hydrogen cracking2018-02-11 12:38 GMT+02:00 pradip kumar Sil <pradipsil@gmail.com>:Dear Everybody,--We are doing P-22 plate welding, thickness is 6 mm with E-9018B3 ( Dia 2.5 mm) electrode. Preheat is 150 to 200 degree centigrade with little beveling. Site is near the sea area.We found lot of delayed crack generally after 12 hours. Crack is coming middle of the weldment.Can anybody inform me cause & corrective action for the same.Pic attached for your ready reference.Thanks in advance.Regards,
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