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Preventing tearing
I have several Stainless steel castings that our current supplier has trouble producing due to tearing issues. The castings are round tapered housings with flanges on both ends. The body of the part has a wall thickness of .375. My question is how can we prevent the tearing defects that occur along the parting line of this part?
Variations of wall thickness in Stainless Steel Castings can become a factor in enabling hot tears or thermal stress cracking. The thin wall is a concern especially if the casting has an internal or external heavy section attached. This will cause the thin sections to freeze off or solidify first resulting in thermal tears at the heavy sections. Depending on the design of the casting sometimes it becomes necessary to alter the parts design to help eliminate the problem. How the casting is fed is also a concern that needs to be investigated.

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