Re: [MW:31928] HAZ size

Gents,

If you talk about Heat Affected Zone, once you should consider heat transfer. As per thermo mechanic rules, the heat transfer will be happened between two or more different temperature environment. If you start the heat transferring mechanism from the weld area, the temperature will be released through each base materials. If any of the base material have smaller metal volume than other it will be charged by heat more. Then, if you calculate heat transferring chart (please see or learn TTT Diagrams for relations of "Time, Temperature, Transfer") you can see which phase have born due to heat transferring 😊 you must consider this to each part of distance of affected zone from the beginning (fusion line). End of this study you can proof your calculations with metallographic exam.

The startup key of this calculation is heat input. This is depends on several factors as minimum and simply as Mr. Babur Khan said.

 

Good luck!

Cenk Turkoglu

Materials, Corrosion and Welding Engineer

 

From: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com> on behalf of Babur Khan <mbabur.bwp@gmail.com>
Reply-To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Date: 13 January 2021 Wednesday 13:22
To: "materials-welding@googlegroups.com" <materials-welding@googlegroups.com>
Subject: Re: [MW:31926] HAZ size

 

Dear Mr . Hani Nabil,

Its depends on several factors i.e. Material type (weld ability), thickness of material, welding Process and Heat input during welding. 

Generally for carbon Steel and normal thickness we take care  25mm area from weld Line to base metal.

Muhammad Babur Khan

Sent from my iPhone

On 13 Jan 2021, at 9:35 AM, Hany Nabil <eng.hanynabil20@gmail.com> wrote:

Dear All ,

 

Please let me know how to calculate HAZ size in Welding ? 

--

 

 

 Best Regards,

 

 Eng. Hany Nabil

 Senior Welding Engineer

 Petrofac

 Engineering and Production Service

 Email: eng.hanynabil20@gmail.com

 Egypt Mobile: 002-01225622022

 

 

 

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