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Rifles, Reloading, Optics, Equipment
Reloading
Stainless Pin Tumbling "too clean"?
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<blockquote data-quote="brian11" data-source="post: 1886108" data-attributes="member: 112031"><p>What you guys are calling cold welding definitely exists. Its true name is galvanic corrosion. Galvanic corrosion is an electrochemical process in which one metal corrodes preferentially when it is in electrical contact with another, in the presence of an electrolyte. The electrolyte in this case being humidity in the air. As you mentioned about the moly coating, that breaks the electrical contact. Galvanic corrosion is common any time dissimilar metals touch. That's why, regardless of the industry, people have to take galvanic corrosion into account, typically putting something like a grease or anti-seize between the metals. You get the same thing with a steel bolt in an aluminum engine block. It's the same reason electricians use something like Noalox where copper wire touches aluminum connections. It doesn't happen quickly, unless the electrolyte is strong, like salt water, but the more time it has, the more it will do it.</p><p></p><p>Sealing the ammo in an air-tight container would probably also prevent the "electrolyte" part and prevent or reduce it.</p></blockquote><p></p>
[QUOTE="brian11, post: 1886108, member: 112031"] What you guys are calling cold welding definitely exists. Its true name is galvanic corrosion. Galvanic corrosion is an electrochemical process in which one metal corrodes preferentially when it is in electrical contact with another, in the presence of an electrolyte. The electrolyte in this case being humidity in the air. As you mentioned about the moly coating, that breaks the electrical contact. Galvanic corrosion is common any time dissimilar metals touch. That's why, regardless of the industry, people have to take galvanic corrosion into account, typically putting something like a grease or anti-seize between the metals. You get the same thing with a steel bolt in an aluminum engine block. It's the same reason electricians use something like Noalox where copper wire touches aluminum connections. It doesn't happen quickly, unless the electrolyte is strong, like salt water, but the more time it has, the more it will do it. Sealing the ammo in an air-tight container would probably also prevent the "electrolyte" part and prevent or reduce it. [/QUOTE]
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Stainless Pin Tumbling "too clean"?
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