Patent ID: 7980615
Filing Date: 2011-07-19
Classification: B21D,B60R

Abstract:
1. An axial member with flange, comprising: a flange member having a mounting face to be in contact with a mating face of another member; and an axial member being made of a tubular aluminum alloy material and having an end joined to the flange member, wherein the flange member has a hole, and the axial member is placed in the hole, wherein the axial member has a flared portion at an end thereof, the flared portion spreading in a radial direction as a result of electromagnetic forming and being in intimate contact with the flange member, wherein the axial member has a protrusion formed by electromagnetic forming, and the flange member on the periphery of the hole is held between the flared portion and the protrusion, and wherein the flange member has a thick-walled portion in a region where the flared portion is in intimate contact with the flange member, wherein the flange member has a thick-walled portion in the vicinity of the hole when viewed in a cross section perpendicular to the mounting face, the rear face of the flared portion is in intimate contact with the thick-walled portion, and the flange member has a smaller thickness than that of the thick-walled portion in a region outside the thick-walled portion.