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Cold welding

#1
Hi everyone, I was wondering if you could help me with finding books/articles on cold welding? I just found this website https://www.edelstahl-haerten.de/en/appl...d-welding/ and find the concept really interesting. While I understand the general concept of cold welding of steels, I would really love to know more and how you can explain it chemically and/or physically. 

I'm just curious how (stainless) steels can just get stuck together just because of pressure, you see? How can that be? I realize that gravity and pressure can be very great forces but I wouldn't have thought that they could be welded together by just regular industrial pressure. Obviously it has something to do with the amount of time these parts are stuck together. But why? Is there an equation for this type of thing? 

If you know, please contact me. If you have any more sources on this, even better. Would love to just read up on this topic by myself!
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