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glazing

gunpowder manufacturing
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Quick Summary

The term "gun glaze" refers to a spray-applied surfacing glaze used on vehicle bodies before painting.1

In the context of gunpowder manufacturing, "glazing" is a crucial step. After the powder is formed into cakes and reduced to desired grain sizes, it undergoes glazing. This process involves tumbling the grains in large wooden cylinders for several hours. The friction rounds off the corners of the grains, and with the aid of forced air, the powder reaches a specific moisture content. Graphite is added during glazing, creating a thin film over each grain. This film makes the powder flow more easily and increases its resistance to moisture. Glazed powder is often designated with a "g" following its grain size, such as 3FAg.2

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2 Britannica Sources
  1. gun glaze
  2. explosive - Manufacture of black powder

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