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Re: [MW:16321] RE: 16305] Welding for cast iron repair

By Materials & Welding
Dear Shridhar Sir,
As per valubale guidance:- of Hot Welding & Cold Welding..
 
1) Is it applicable to ASTM A216 Gr.WCB Castings (Valves Bodies) on follwing situation & condition:-
a) If there is failure in hydro test leak in valve bodies i.e casting leak in Valve bodies
 
Similarly
2) ASTM A217 Gr.WC6 Castings (Valves Bodies)
3) ASTM A217 Gr.WC9 Castings (Valves Bodies)
4) ASTM A217 Gr.C5 Castings (Valves Bodies)
5) ASTM A217 Gr.C12 Castings (Valves Bodies)
6) ASTM A351 Gr.CF3M Castings (Valves Bodies)
 
With regards,
Ashish P
 
On Mon, Dec 24, 2012 at 10:12 AM, kannayeram gn
 
 
anapandithan <kgpandithan@gmail.com> wrote:
1 Use ENiC1 or ENiFe C1 electrodes
2.Cover with glass wool on entire mass except weld/repair area
3. Preheat to min 200 degree celsius and maitain till completion of weld
4. Carry out peening for every weld metal of each electrode till make the weld metal almost flat
5. after completion of weld, cover with glass wool.

Pandithan
Welding Consultant

On Sun, Dec 23, 2012 at 11:41 PM, pgoswami <pgoswami@quickclic.net> wrote:

Dudy,

By and large Gray and nodular cast irons are weldable, NOT THE WHITE CAST IRONS.

The  recommended  electrodes for welding these  two mentioned varieties are :- Pure -99% Nickel type, and 55 -45 Ni-Fe type . By and large a sustained preheat & interpass temperature control  would be recommended - of the range 150-250 Deg C. Note cast iron can be only repaired,do not expect to have very high level of  metallurgical integrity from this repair.

Please find the links below as useful guidelines.

Thanks

Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario, Canada.
Email-pgoswami@sympatico.ca,
pgoswami@quickclic.net
 
 
 

-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Dudy Firdaus
Sent: Sunday, December 23, 2012 1:50 AM
To: materials-welding@googlegroups.com
Subject: [MW:16305] Welding for cast iron repair

Dear Experts,

Could you share me the best experiences regarding with welding for cast iron repair?
What in best process of welding and spec of the electrodes?

Highly appreciated for your help.
Thanks.

Kind Regards,

Dudy Firdaus
m: +62 85859020475 ; +62 81217149000
e: dudy.pfirdaus@yahoo.com.au
www.linkedin.com/pub/dudy-firdaus/1a/44/558

Sent from my Private BlackBerry®

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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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