HOT STAMP MOLDED PART AND METHOD FOR MANUFACTURING SAME

摘要

1By the method of the present invention in the manufacture of a hot stamp molded part by molding a surface processed steel sheet formed with Zn Fe plating on a base steel sheet surface using hot stamp molding the surface processed steel sheet is heated to a temperature at or above a transformation point Ac of the base steel sheet and at or below 950°C and molding is started after the surface processed steel sheet is cooled to a temperature at or below the freezing point of the plating layer according to the Fe content of the plating. Separation of the plating layer and intergranular cracking of the parent material are thereby avoided and a hot stamp molded part having good characteristics is manufactured.