TERMINAL MANUFACTURING METHOD, TERMINAL, ELECTRIC WIRE END CONNECTION STRUCTURE MANUFACTURING METHOD, AND ELECTRIC WIRE END CONNECTION STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a terminal that can be obtained by laser welding at heightened laser beam absorbing efficiency, and can shield an electric wire conductor from an environment without enlarging a crimp part of the terminal, a terminal, an electric wire end connection structure manufacturing method, and an electric wire end connection structure.SOLUTION: A method of manufacturing a terminal 1 having a tubular caulking part 30 crimped and jointed to an electric wire sequentially has steps of: forming a nickel-tin alloy layer on a plate material made of copper or a copper alloy at a portion at which at least the tubular caulking part is formed; forming a terminal substrate by punching the plate material on which the nickel-tin alloy layer is formed into a development elevation view of the terminal; bending a tubular development part that is a portion for forming the tubular caulking part of the terminal substrate; forming an abutting part by abutting opposed ends of the tubular development part against each other; jointing (50) the abutting part by laser welding; and forming the tubular caulking part 30.