Casting stress relief

Home enthusiasts discuss their Foundry & Casting work.

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shapeaholic
Posts: 53
Joined: Sat Jan 04, 2003 8:56 pm
Location: Ontario Canada

Casting stress relief

Post by shapeaholic »

Hi group;
Can anyone please advise me on the correct stress relief proceedure for class 30 grey iron?
I am making some straight edges from castings and I would like to have a minimum of distortion.
So far all I have been able to find out is that they should be rough machined, then heated to 950-1050F for 1hour per inch of thickness, and furnace cooled.
Is this correct?

Thanks
Pete
Mikado14
Posts: 77
Joined: Sat Jan 04, 2003 6:47 pm
Location: Pughtown, Pa

Re: Casting stress relief

Post by Mikado14 »

Sounds about right. However not to sure about 30 gray. I always had my grey done around 1000 degrees and let the furnace cool down. Never had any problems.
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