Method of joining metallic materials
AssigneeHitachi, Ltd.
InventorsKazutaka Okamoto, Satoshi Hirano, Masahisa Inagaki, Yasuhisa Aono
Life of this patent
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Abstract
Different metallic materials are joined in such a manner that friction heat generated by friction between a rotating probe made of a hard material and one of the metallic materials having a lower mechanical strength or a lower melting point than the other to effect plastic flow of the one material and the probe is inserted into a pit formed in a joint zone of the other material to fill the pit with the plastic flow material.
Claims20
A method of joining metallic materials, which comprises forming a pit in one of the materials, and effecting plastic flow of the other material to fill it in the pit.
A method of joining metallic materials, which comprises:
- forming a pit in one of the metallic materials to be joined,
- placing the other material above the pit,
- rotating a probe harder than the other material to insert it into a joining zone of the other material from the upper part of the other material,
- effecting plastic flow of the other material by friction heat generated by rotation of the probe,
- filling the plastic flow of the other material into the pit by inserting the probe thereinto, and
- withdrawing the probe from the joining zone.
A joint of metallic materials connected at a joining zone, wherein one of the materials has a pit in the joining zone, and wherein the pit is filled with the other material in the joining zone by plastic flow of the other material.
Dependencies are inferred from the claim text.