Electrically heatable caulking method

Details Electrically heatable caulking method Electrically heatable caulking method

B - Operations, Transporting

23

K

B23K 9/04 (2006.01) B21D 39/00 (2006.01) B21J 15/08 (2006.01) B29C 65/60 (2006.01)

Patent

CA 2093691

An electrical caulking method of a work which is made of magnesium or a magnesium alloy. The work includes a body and a caulking pin integrally projected from the body. The method includes a step of holding the work between opposing two electrodes in such a manner that the first electrode contacts the caulking pin and the second electrode contacts the body, a step of supplying an electric current between these electrodes and a step of exerting a pressure so as to caulk the caulking pin into a desired shape. At least the first electrode which contacts the caulking pin of the work is made of a material having a low thermal diffusivity and is difficult to alloy with magnesium.

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