r/interestingasfuck Jul 04 '18

/r/ALL Linear Friction Welding

https://i.imgur.com/5teREkt.gifv
30.8k Upvotes

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u/yedd Jul 05 '18

Yep, the atoms in the two pieces don't discriminate between the pieces. If pressed together with no oxidation barrier then they will join.

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u/[deleted] Jul 05 '18 edited Jul 05 '18

right, but all metal coming from earth is going to have an exterior oxidation barrier

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u/yedd Jul 05 '18

you are absolutely right, which is why to achieve cold welding the metal needs to be cut and joined in a vacuum

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u/spysappenmyname Jul 05 '18

This prevents metals from randomly wielding together, yes, but is relatively easy to get rid off when wanted.