| Title |
Cladding of Copper on Iron - Nickel Alloy Rod by hot Drawing |
| Authors |
유연철(Yeon Chul Yoo); 강일구(Il Koo Kang); 이동녕(Dong Nyung Lee) |
| Abstract |
Fabrication of copper clad iron-42% nickel alloy rods or wires (copper ratio : 18-28%) by hot drawing has bean studied laying emphasis on various drawing processes. The processes are composed of predrawing for reduction of clearance between a core rod and a copper tubing, hot drawing for bonding between the core and the copper layer of the predrawn rod, and cold drawing of the composite rod to a predetermined size. The predrawing process was taken for tube sinking or tube drawing with a moving mandrel depending on dimensions of core and tubing and reduction in area. The important factors in hot drawing were the drawing die angle and the clearance between core and tubing. These could be understood by measuring the hardness distribution in cold drawn composite rods. |