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The Range
Ammo & Reloading
Cold bonding of plated ammo.Read this.
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<blockquote data-quote="dennishoddy" data-source="post: 2771634" data-attributes="member: 5412"><p>I spent about an hour looking up and reading links about cold bonding on the internet this morning. </p><p></p><p>Cold bonding/cold welding is when the electrons of similar metals meet and blend, creating a union. Cold welding is done a lot in aircraft from what I read, but has to be performed in a vacuum. Tools used in space, have a special coating, because if they don't, they will immediately weld to the metal they touch. This is just kind of an overview of what I read. The links go into great detail with a lot of scientific reasoning that is beyond me, but That's what I got out of it. </p><p></p><p>Since these rounds were not subjected to a vacuum, I'm curious what really happened. I've seen two plates of steel with an oil film between them become almost glued together after they have sat in that position for awhile. The steel bars in our rack at work would have a coating from the factory, and when stacked, it took a prybar to separate them at times. </p><p>I don't shoot a lot of plated rounds, but have some jacketed that is 20+ years old and shoots just fine in rifle and pistol. I have some old milsurp .45ACP steel case that you can't pull the bullet with a collet puller, because of the varnish, but they shoot fine. </p><p></p><p>Bottom line, I don't know what caused it, just throwing some more info out there.</p></blockquote><p></p>
[QUOTE="dennishoddy, post: 2771634, member: 5412"] I spent about an hour looking up and reading links about cold bonding on the internet this morning. Cold bonding/cold welding is when the electrons of similar metals meet and blend, creating a union. Cold welding is done a lot in aircraft from what I read, but has to be performed in a vacuum. Tools used in space, have a special coating, because if they don't, they will immediately weld to the metal they touch. This is just kind of an overview of what I read. The links go into great detail with a lot of scientific reasoning that is beyond me, but That's what I got out of it. Since these rounds were not subjected to a vacuum, I'm curious what really happened. I've seen two plates of steel with an oil film between them become almost glued together after they have sat in that position for awhile. The steel bars in our rack at work would have a coating from the factory, and when stacked, it took a prybar to separate them at times. I don't shoot a lot of plated rounds, but have some jacketed that is 20+ years old and shoots just fine in rifle and pistol. I have some old milsurp .45ACP steel case that you can't pull the bullet with a collet puller, because of the varnish, but they shoot fine. Bottom line, I don't know what caused it, just throwing some more info out there. [/QUOTE]
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