Affiliations: Incubation Laboratory, Osaka Institute of Technology, Osaka, Japan | Faculty of Engineering, Osaka Sangyo University, Daito, Japan | Junior College, Osaka Sangyo University, Daito, Japan | Faculty of Engineering, Setsunan University, Neyagawa, Japan | Faculty of Science and Technology, Keio University, Yokohama, Japan
Note: [] Address for correspondence: Dr. H. Ochi, Incubation Laboratory, Osaka Institute of Technology, 5-16-1, Omiya, Asahi-ku, Osaka 535-8585, Japan. E-mail: ochi@chem.oit.ac.jp.
Abstract: Friction welding of FC250 common grade cast iron was carried out to examine the weldability and temperature distribution near the weld interface during welding. The joint strength of both solid and pipe joints was evaluated by tensile tests. The highest tensile strengths in the solid joints and pipe joints were 317 MPa (79% joint efficiency) and 381 MPa (95% joint efficiency), respectively. A fine-grained interfacial layer of FC250 formed near the axial center at the weld interface in the solid joints, whereas there was no fine-grained interfacial layer in the pipe joints. The welding material temperature at the axial center was higher than that at the periphery in the solid joint. There was little difference in the temperature distribution between the solid joints and pipe joints.
Keywords: Friction welding, cast iron, tensile strength, temperature distribution
