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Should Vacuum Impregnation Be Done Before or After Finishing?

Posted by Andy Marin on Thu, May 02, 2019 @ 03:44 PM

Powder coat, paint, chromate conversion, or anodizing, are common finishes applied to die cast parts to improve their performance or appearance.  In some die casting applications, components must also be pressure tight to hold pressurized fluid or gases. Companies use vacuum impregnation to meet these requirements by sealing the internal leak paths without impacting any other features of the casting.


A common question asked about vacuum impregnation is “Should vacuum impregnation be done before or after finishing?”

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3 Things Vacuum Impregnation Is Not

Posted by Andy Marin on Mon, Feb 25, 2019 @ 03:36 PM

Sometimes to understand how something works it’s important to understand what it doesn’t do. Many companies call us and ask about vacuum impregnation. Although this process has been used since the 1940's, many metal casters, machinists and engineers are not familiar with the process, how it works and how it can best be used to meet their needs and requirements. 

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