Media Blasting & Metal Preparation
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Matt Joseph. Media Blasting & Metal Preparation
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This is what the inside of a blast room looks like. The item under blast attack is too large to fit into a blast cabinet, which leaves an outside blasting or a blast room as the only options for blasting it. The operator is breathing outside air and is protected from blast media from head to toe.
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So, the metal is a given and the circuit through it is another given, leaving only one foundation for rusting that you can manipulate: the presence of moisture or an electrolyte. The only practical way to stop rust is to deprive it of water, moisture, and, most important, electrolytes such as salty water. Okay, you have the basis for a plan. But, of course, there are several complications in implementing it.
The first is that the substrate has to be incredibly clean before you can even consider depriving it of moisture. Here’s why: If you leave any corrosion on a surface that you later coat, it contains moisture absorbed by the corrosion from the atmosphere. That moisture causes the substrate to rust further under your paint or other coating.
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