Re: [MW:27450] P-22 plate welding ...6-MM plate

Control maitenance and post heat temperature.

Regards,

Asif

Sent from Yahoo Mail on Android

On Fri, Mar 2, 2018 at 10:16 AM, George Dilintas

<dilintas@gmail.com> wrote:

most probably hydrogen cracking

2018-02-11 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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Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

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