[TheForge] Re: Re: Welding cast iron

[Peter Fels & Phoebe Palmer]

Ekaterina :
An impromptu spark test with your 4" peanut grinder will provide a quick 
hint...pf

Ekaterina Harrison wrote:
> Larry,
> 
> Thanks for this. I did not even think of that. Now some of what I 
> experience in welding up an old loader part makes more sense.
> I tig welded this piece without preheating. I did not know whether this 
> piece was cast iron or steel so decided just to try welding to see what 
> happened. I did have to chase out and re-weld a few spots that tried to 
> crack. When I was grinding out those welds I did find them to be much 
> harder than the surrounding metal. This may be another way to tell 
> whether the piece is cast iron or steel!
> Well, the weld held up anyway as more than a year later Old Gomer, The 
> loader, is still running on that wheel.
> 
> Ekaterina
> 
> On May 23, 2008, at 2:03 AM, theforge-request at mailman.qth.net wrote:
> 
>>
>> Message: 5
>> Date: Thu, 22 May 2008 17:36:17 -0400
>> From: Larry Brown <lp.brown at verizon.net>
>> Subject: Re: [TheForge] Re: Welding cast iron
>> To: Blacksmithing List Sponsored by ABANA <theforge at mailman.qth.net>
>> Message-ID: <5.1.0.14.2.20080522173243.0405da88 at incoming.verizon.net>
>> Content-Type: text/plain; charset=us-ascii; format=flowed
>>
>>
>>
>> A word of caution about using steel rod on castiron, it picks up carbon
>> from the cast. It then becomes the equivalent of dealing with tool 
>> steel if
>> you have to drill it or thread it in the welded area. Otherwise I have 
>> had
>> it work fine.
>> L Brown
>>
>>> I have found that in following these steps I was
>>> able to make the repairs with regular steel filler rod as well as cast
>>> iron rod. Te results seemed to be about the same.
>>>
>>> I hope this helps in your next cast iron repair job.
>>>
>>> Ekaterina
>>
> 
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