[SEL] Cast iron repair

[nick]

Hi Andy
             wen i have any cast iron to repair i always weld it using cast
rods with gas or arc 
and always use a ball peen hammer on it wen cooling to relive the stress to
stop it cracking
then shot blast the part it will then look like the rest with luck !!!
nick 
 
Nick Holden
Banbury 
Oxfordshire (UK)
-------Original Message-------
 
From: Andy Glines
Date: 03/14/05 19:20:41
To: sel at lists.stationary-engine.com
Subject: [SEL] Cast iron repair
 
The repair I'm doing is actually for my steam engine but it seems like an
appropriate subject for the engine list.  I have a couple of broken or
cracked castings to be repaired.  I can braze to do the repair but the
repaired area sticks out like a sore thumb next to the original surface
which is quite rough and pitted.  For the repair I ground a V where the
crack was and also the surrounding area to shiny metal,  After brazing I
ground the brass flush with the base metal.  Using a ball peen hammer,
punches, & my needle scaler I attempted to recreate the pits in the cast
iron.  Things went pretty well.  I may need to beat on it a little more to
camoflage the repair.  Has anyone else doen this?  How did you do it?
 
 
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