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Correcting Three Vacuum Impregnation Myths

Posted by Andy Marin on Mon, Nov 25, 2019 @ 09:43 AM

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 caused by interconnected porosity.

 

Misconceptions and lack of information about the vacuum impregnation process can hinder its implementation, which may increase unforeseen costs and negatively impact part quality. This piece demystifies vacuum impregnation by correcting three common myths.

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Can Vacuum Impregnation Seal Cracks?

Posted by Andy Marin on Wed, Oct 30, 2019 @ 09:00 AM

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 commonly asked question is in addition to leak paths, can vacuum impregnation seal cracks?

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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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Should Porosity Be Sealed Before or After Machining?

Posted by Andy Marin on Wed, Jan 02, 2019 @ 08:55 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.

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Article: Vacuum Impregnation Enables Lightweight Material Use

Posted by Andy Marin on Thu, Sep 21, 2017 @ 08:53 AM

Godfrey & Wing has published an article in LightWeighting World titled "Vacuum Impregnation Enables Lightweight Material Use". This article discusses the surge in aluminum use and how vacuum impregnation eliminates aluminum casting porosity. You can read the entire article below.

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Video: How Godfrey & Wing's Equipment Works

Posted by Andy Marin on Mon, Aug 07, 2017 @ 07:34 AM

Godfrey & Wing's vacuum impregnation equipment is the best in the world. The equipment re-imagined vacuum impregnation by making it safer, increasing production and eliminating casting defects. But how exactly does it work? Watch this animation video. 

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Importance of Clean, Dry Parts for Vacuum Impregnation

Posted by Andy Marin on Wed, Aug 02, 2017 @ 02:20 PM

In order to properly seal porosity, parts must be clean and dry. If any residual fluids or debris are on the part, 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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FAQ: Impregnating Powder Metal Parts

Posted by Andy Marin on Mon, May 15, 2017 @ 08:10 AM

Vacuum impregnation is commonly used as a preventative measure to keep castings pressure tight. But when use on powdered metal parts, vacuum impregnation is used as a value added process. In this blog, we will answer the common questions we receive about impregnating powdered metal parts and explain why it is a value added process.

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What is the Cost of Vacuum Impregnation?

Posted by Andy Marin on Mon, Apr 24, 2017 @ 03:19 PM
Manufacturers are constantly faced with the dilemma of either scrapping castings that leak, or sealing the castings through vacuum impregnation.  In this simplified example, we will review the costs of casting scrap compared to the cost of vacuum impregnation.
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