ANNULAR CORE WIRE OF CABLE BEAD FOR TIRE AND MANUFACTURING METHOD OF CORE WIRE FOR THAT AND ANNULAR CORE WIRE

摘要

PROBLEM TO BE SOLVED: To provide an annular core wire of a cable bead for a tire and a manufacturing method of the core wire for that and the annular core wire capable of securing the strength of a regular part and a welded part while facilitating a welding operation, and saving an annealing treatment after welding. SOLUTION: The core wire 12 of the cable bead 11 for the tire contains iron (Fe) as a main component, carbon (C) of 0.1 to 0.3% by mass, both silicon (Si) and manganese (Mn) together of 2.2 to 2.9% by mass, and chromium (Cr) of 0.3 to 0.5% by mass. The content of manganese is set to be much more than that of silicon. The annular core wire 14 is obtained by saving annealing treatment and deburring after bending to form the core wire 12 and welding the starting end part and the dead end part. COPYRIGHT: (C)2006,JPO&NCIPI