MANUFACTURING METHOD OF COPPER-CLAD ALUMINUM COMPOSITE EXTRUSION MATERIAL, COPPER-CLAD ALUMINUM CONDUCTIVE WIRE MATERIAL AND MANUFACTURING METHOD OF THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of copper-clad aluminum composite extrusion material made by integrating Al material in which the thickness of a Cu pipe corresponding part is made thickened and a Cu pipe, and so forth.;SOLUTION: A manufacturing method of copper-clad aluminum composite extrusion material 20 includes: a first process S1 of respectively selecting a cylindrical Cu pipe 22 made of Cu type material and a columnar Al material 21 made of Al type material such that a ratio of deformation resistance value at 500°C becomes less than 10; a second process S2 of charging the Al material 21 into the Cu pipe 22; a third process S3 of closing both end openings of the Cu pipe 22 while vacuuming the interior of the Cu pipe 22 into which the Al material 21 is charged to form a composite billet 23 of the Cu pipe 22 in which the Al material 21 is sealed under vacuum; and a fourth process S4 of providing a rod-like copper-clad aluminum composite extrusion material 20 made by integrating the Al material 21 and the Cu pipe 22 by performing hot extrusion while heating the composite billet 23 into 400 to 450°C.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2017,JPO&INPIT