Re: [CAD_CAM_EDM_DRO] cast iron

Carlos Guillermo wrote:

> List -
>
> I've got some questions about some castings I'll be having made soon. There
> was recently some mention of aging the cast iron before machining, and I'm
> wondering, how long one should let it age?
>
> Carlos Guillermo
> VERVE Engineering & Design
>

In Moore's "Foundations of Mechanical Accuracy" pg. 17.

A. proper composition of the iron........ I think implies meehanite

B. "Stability of iron depends mostly on slow, uniform cooling in the mold after casting."

Further down the page the author talks about a Moore jig grinder that had been thru a fire. Melted the aluminum guards. After a
solvent cleanup. "there was virtually no deviation from the original factory calibration".

HTH
Dave

p.s. I have heard about shops leaving there casting out in the weather for a few years to age before using them. I suspect Century
(lathes) did that from the mess behind their shop.