Re: [MW:12839] Nick break test failed

dear sirs,

it is always referable to make rt before coomencing for the mechanical test .

refgards

dinesh

On Wed, Nov 2, 2011 at 8:30 PM, Eduardo Calva <eduardocalva@hotmail.com> wrote:

 

Process: WPS qualification for SMAW through thickness double repair
Electrodes: root pass E-7018, HT, fill and cap E-7018-1
Code: API 1104
Pipe Diameter PQR: 24"
 
ISSUE:  2 of 4 specimens failed on Nick break test showing porosity and slag.
 
My questions:
 
1.- Can I support with only 2 passed test that the WPS is approved?
2.- Why codes ask for soundness tests like bend and nick break for WPS qualification?, I mean we would just need to test mechamical properties like tensile, hardness, charpy, etc
3.- It is a fact that the cause the test failed was because welder workmanship not the pocess is bad
 
Thanks for help me.

Eduardo Calva

 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.