MANUFACTURING METHOD OF SURFACE-TREATED STEEL PLATE AND SURFACE-TREATED STEEL PLATE, RESIN-COATED STEEL PLATE, AND CAN AND CAN TOP

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of a surface-treated steel plate that has superior resin adhesion and corrosion resistance and may replace a tin-free steel plate by not using chromium, and using only conventional plating facilities without requiring thermal diffusion processing facilities after plating, the surface-treated steel plate obtained by the manufacturing method, a resin-coated steel plate formed by coating the surface-treated steel plate with organic resin, and a can and a can top that use the same.SOLUTION: A manufacturing method of a surface-treated steel plate includes forming a coating containing Ti and O through a cathode electrolytic treatment in a solution containing Ti after forming a plating layer consisting of Ni and Fe without a thermal diffusion treatment by carrying out electrodeposition on at least one surface of a steel plate so that an Ni amount is 50-1,000 mg/mand the mass ratio of an Fe amount to the Ni amount is 0.5-5.0.