Patent ID: 8741075

Claim:
A method for manufacturing a hot press-formed member characterized by subjecting a zinc-based plated steel sheet to heat treatment which includes a first heating step in which the steel sheet is heated in an oxygen-containing atmosphere to a temperature region of at least 600° C. to at most 750° C. at an average rate of temperature increase up to 600° C. of at most 50° C. per second and a first cooling step in which the steel sheet which was heated in the first heating step is cooled to 550° C. or below, thereby forming a steel blank having on the surface of the steel sheet a zinc oxide layer constituting an uppermost layer and below it a zinc-iron alloy phase having an Fe content of at least 25 mass %, and heating the steel blank in a second heating step to a temperature of at least the Ac 3 point of the steel constituting the sheet, and carrying out a hot press forming step on the heated steel blank by starting press forming when the temperature of the steel blank is at least the Ac 3 point and rapidly cooling the press-formed member, thereby obtaining a hot press-formed member having a surface region which has a zinc oxide layer and an iron-zinc solid solution phase and which does not contain an intermetallic compound phase or a pure zinc phase.