Re: [MW:8002] purpose of doing nick-break test.

 

The purpose of Nick Break Test - A nick break test involves breaking the weld joint to examine the fractured surfaces for internal defects such as:
(i) Gas pockets
(ii) Slag inclusions
(iii) Porosity.
The test also determines weld ductility and the degree of fusion.

Regards

 

J.N.Murthy

On Mon, Nov 1, 2010 at 1:04 PM, bas karan <baskaran07@yahoo.co.in> wrote:

Dear sir   all the inperfection u mentioned can be detected by RT.then why we are doing nick-break.   pls explain in engineering point of view not inspection. thank you. Regards Baskaran. --- On Sun, 31/10/10, Shashank Vagal <nach_sam@yahoo.com> wrote: From: Shashank Vagal <nach_sam@yahoo.com> Subject: Re: [MW:7965] purpose of doing nick-break test. To: materials-welding@googlegroups.com Date: Sunday, 31 October, 2010, 7:05 PM Other intention is to get a measure of the ductility of the joint at the bend location. --- On Sun, 31/10/10, saRAVANAN <vividsarwan@gmail.com> wrote: From: saRAVANAN <vividsarwan@gmail.com> Subject: Re: [MW:7961] purpose of doing nick-break test. To: materials-welding@googlegroups.com Date: Sunday, 31 October, 2010, 1:26 PM Dear Mr Baskaran, This test is performed to reveal internal imperfections such as slag inclusion, lack of fusion, incomplete penetration, porosity, etc in a butt weld.  A butt weld specimen is fractured along an artificial notch that is intentionally machined on the centre line of the fillet weld specimen to facilitate fracture in the centre of the weld. The fractured specimen cross section is then visually examined for imperfections. On Sat, Oct 30, 2010 at 1:53 PM, bas karan <baskaran07@yahoo.co.in> wrote: Dear all pls explain if any one know the purpose of doing nick-break test. Thanks&regards Baskaran. -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents. -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.