[MW:1915] Re :[MW:1889] RE: 1881] Welding of Magnetised material

what is the preheating tempreture to reduce the magnetic field
regards
dinesh
On Wed, 8 Apr 2009 10:07:10 +0530 materials-welding@googlegroups.com wrote




















Dear Fernando

In my opinion it is not possible to weld
with a magnetic field strength of 60G.

FYI field strength required for Magnetic
particle testing it should be 30G-60G, and as far as I know for welding it
should be less than 3G

If you can able to achieve in any way please
share your experience here for our knowledge

 









From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of kataiah@bilfal.com

Sent: Sunday, April 05, 2009 1:07
PM

To: materials-welding@googlegroups.com

Subject: [MW:1881] Welding of
Magnetised material



 



Hi,



Preheating
the material upto certain temperature(dempends on material)  will reduce
residual magnetism in the material.



This
will reduce the Arc blow problem & can be welded with conventional methods.


Regards




P.K


K.S.A









 


"ashish bhate"


Sent
by: materials-welding@googlegroups.com

04/04/2009 12:29 ã

Please
respond to materials-welding


       

 
      To:        


 
      cc:        

 
      Subject:        [MW:1875] Re:
[MW:1865]










HI !.

One of the way to reduce the effect of magnetic perturbation is to use AC welding machine.



On Fri, Apr 3, 2009 at 8:29 AM, Fernando
wrote:

Dear all,

 


My
name is Fernando, marine engineer from Brazil and, next week, I will have
to develop a welding procedure in carbon steel in a closed ambient with magnetic
field of 60 Gauss.

 


Do
you have some tip / information about how would be possible minimize the
effects of this magnetic perturbation?

 


Thanks


 


Fernando





________________________________________________

Mensagem enviada utilizando Webmail - Grupo Labmat 2.7.9



Ph. Res.: 091-020-25667731

Mobile:9822099311











--~--~---------~--~----~------------~-------~--~----~
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.
-~----------~----~----~----~------~----~------~--~---