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Thread: No mess cast iron
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5th Oct 2018, 12:37 AM #1Diamond Member
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No mess cast iron
I repurposed an old cast iron hub from the scrap pile (post#143 in Tips and Tricks). I call it cast iron because it was definitely a cast item, it was ferrous, and there was a piece broken out of it typical of damaged cast iron. My past experience of turning cast iron is that I end up looking like an underground coal miner, but that wasn't the case with turning this hub.
The metal was coming off the tool in a typical shower of tiny chips but they were clean, there was no horrible black dust.
I'm thinking the hub must have been made from a low carbon cast iron. Or looking at it the other way a steel with extra carbon to lower the melting temp and increase the fluidity for casting, I have read of 'semi-steel cast iron' in advertising blurbs. Any thoughts?
IMG_1991.jpg
IMG_1992.jpg
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5th Oct 2018, 12:42 AM #2
Hi Bob,
Looking at those chips, I would say that was cast steel. The surface grain looks to fine to be iron.Best Regards:
Baron J.
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5th Oct 2018, 08:38 AM #3Most Valued Member
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The chips look the same as those I got from some 4E cast iron bar I machined recently, but the finish on the workpiece is much shinier.
Chris
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5th Oct 2018, 06:25 PM #4Diamond Member
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Looks like SG iron.
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5th Oct 2018, 06:41 PM #5Senior Member
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- Nov 2008
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- Sydney
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I concur.
Chas.
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