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Video: When Should I Impregnate a Casting

Posted by Andy Marin on Thu, Jun 20, 2019 @ 08:50 AM

The goal of a foundry is to produce high quality die castings that meet or exceed the customer’s specifications at a competitive cost.  In some die casting cases, those specifications require that the part must hold pressurized fluid or gasses. Companies use vacuum impregnation when the part must hold fluids or gasses under pressure. A common question asked about vacuum impregnation is “When Should I Impregnate a Casting?” This video addresses this question by answering if vacuum impregnation should be done before or after machining and finishing. 

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Useful Lessons from Henry Ford about Vacuum Impregnation

Posted by Andy Marin on Fri, Jan 04, 2019 @ 02:50 PM

As manufacturing equipment ages, the maintenance and repair (MRO) of the equipment increases while the Overall Equipment Effectiveness (OEE) decreases. Given this, companies must decide while bidding on new projects:  “Use the aged equipment and invest in MRO while accepting a lower OEE” or “Invest in new equipment using the latest technology and generate a higher OEE.” 

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What Size of Porosity Can Vacuum Impregnation Seal?

Posted by Andy Marin on Mon, Jun 04, 2018 @ 08:45 AM

A commonly asked question is "What size of porosity can vacuum impregnation seal?" What seems like a simple, straightforward question is actually a complicated one. This blog will address the topic by describing the basics of die casting porosity, and what vacuum impregnation will seal.

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How to Solve Casting Cleanliness with Vacuum Vapor Degreasing

Posted by Andy Marin on Mon, Mar 05, 2018 @ 08:59 AM

In order to properly seal casting porosity, parts must be clean and dry. The porosity must be free of any contaminants that might preclude the sealant from penetrating.  If any residual contaminants are present, then the following problems may occur.

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Understanding the Vacuum Impregnation Process

Posted by Andy Marin on Wed, Jul 19, 2017 @ 08:10 AM

Vacuum impregnation  seals porosity and leak paths in metal castings and powdered metal parts that form during the casting or molding process. The process is done by filling the pores with a sealant under pressure to stop fluids or gases from leaking under pressure. Vacuum impregnation stops casting porosity and allows manufacturers to use parts that would otherwise be scrapped.

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How to Fix Die Casting Porosity?

Posted by Andy Marin on Mon, May 02, 2016 @ 10:28 AM

Die casting is a metal casting process that injects molten metal through high pressure into a die. It is an economical process that can manufacture a high volume of parts. While die castings have a good surface finish, and are dimensionally accurate, porosity inside the part is inevitable.


This blog will define die casting porosity, problems porosity causes, and how die casting porosity can be sealed.

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