[TheForge] Re: Re: Welding cast iron

[Ekaterina Harrison]

Bruce,

Thanks about the reminder. I do know about the spark tests, but this  
wee little brain blanks out from time to time. Doh..

Ekaterina
On May 23, 2008, at 8:35 PM, theforge-request at mailman.qth.net wrote:

>
> Message: 1
> Date: Fri, 23 May 2008 14:35:56 -0400
> From: "Bruce Freeman" <freemab222 at gmail.com>
> Subject: Re: [TheForge] Re: Re: Welding cast iron
> To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
> Message-ID:
> 	<b33ed1410805231135o6397fa50m23b836c6f767f3e9 at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> Ekaterina,
>
> If you don't know it already, the easier way of testing metals is the
> spark test.  Put the metal against a grinder wheel and observe the
> sparks.  This test appears in text books and has been discussed on
> this forum.  I suggest getting known materials:  pure iron, low-,
> medium-, and high-carbon steels, and cast iron, to use as reference.
> The differences in the sparking are larger and fairly easy to
> interpret.  Won't help with alloys, but pretty diagnostic for carbon
> content.
>
> Bruce
> NJ