Patent attributes
A method for producing a steel sheet member, includes: forming at least one pair of opposing strip grooves in a flat steel sheet such that one of the pair of opposing strip grooves is disposed in one of opposite surfaces of the steel sheet, the other of the pair of opposing strip grooves is disposed in the other of the opposite surfaces, and the strip grooves extend in a direction crossing a longitudinal direction of the steel sheet; heating the steel sheet having the strip grooves to a temperature higher than an austenite transformation finish temperature; and placing the heated steel sheet between an upper die and a lower die to press-form the steel sheet while cooling. When press-forming the steel sheet while cooling, there is space between each of the upper and lower dies and a bottom of a corresponding one of the strip grooves.
