Godfrey & Wing has published an article in Foundry Management & Technology titled "Continuing Advances in Vacuum Impregnation Systems". This article discusses the safety and production advancements in vacuum impregnation equipment. You can read the entire article below.
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.
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.
You may understand that vacuum impregnation is a process by which sealant is used to seal porosity found in a casting. But how exactly does it work?
A common question asked is if vacuum impregnation can seal cracks in addition to casting porosity. In this blog, we will answer this question and address the difference between a crack and porosity.
Customers often ask us how sealant is removed from machined features, like tapped holes. Customers assume that the holes are masked, but that is far from the truth. In this blog, we will discuss what in the vacuum impregnation process enables a casting to be properly sealed without excess cured sealant in unwanted areas (sealant contamination).
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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Paragraphs 4.4.2 and 4.4.3 of MIL-STD 276A requires a minimum vacuum of 29 inches of mercury. This requirement creates a dilemma for people performing MIL-STD 276A at elevations above sea level. The reason: this scale is measuring vacuum relative to sea level and using a gauge with this scale at elevations other than sea level requires a correction. To understand this let's look at the operation of the gauge.
There are three types of vacuum impregnation processes:
Dry Vacuum Pressure (DVP) is the most commonly used process in Godfrey & Wing equipment. To better understand the DVP process, this blog will discuss the process step by step, and its advantages. The following example illustrates engine blocks being impregnated in a traditional batch system.