Plated steel sheet for hot stamping, method of manufacturing plated steel sheet for hot stamping, method of manufacturing hot-stamped component, and method of manufacturing vehicle

Abstract

Provided are a plated steel sheet for hot stamping including: a plated steel sheet body including a steel sheet and an aluminum plating layer provided on one side or both sides of the steel sheet; and a zinc-based metal soap film provided on a surface of the plated steel sheet body on a side of the aluminum plating layer and having an adhesion amount of from 7.1 to 19.8 g/m2 based on a Zn amount (when, in the plated steel sheet body, a zinc oxide film is on the surface of an aluminum plating layer, the total adhesion amount of the zinc oxide film and the zinc-based metal soap film is from 7.1 to 19.8 g/m2 based on a Zn amount.), and a method of manufacturing such a sheet. Also provided are a method of manufacturing a hot-stamped component using the plated steel sheet for hot stamping, and a method of manufacturing a vehicle using a stamped component manufactured by a method of manufacturing a hot-stamped component.

1 . A plated steel sheet for hot stamping, comprising:
 a plated steel sheet body including a steel sheet and an aluminum plating layer provided on one side or both sides of the steel sheet; and   a zinc-based metal soap film provided on a surface of the plated steel sheet body on a side of the aluminum plating layer and having an adhesion amount of an adhered portion of from 7.1 to 19.8 g/m 2  based on a Zn amount.   
     
     
         2 . A plated steel sheet for hot stamping, comprising:
 a plated steel sheet body including a steel sheet, an aluminum plating layer provided on one side or both sides of the steel sheet, and a zinc oxide film provided on a surface of the aluminum plating layer; and   a zinc-based metal soap film provided on a surface of the zinc oxide film of the plated steel sheet body,   a total adhesion amount of adhered portions of the zinc oxide film and the zinc-based metal soap film being from 7.1 to 19.8 g/m 2  based on a Zn amount.   
     
     
         3 . The plated steel sheet for hot stamping according to  claim 2 , wherein at least half of the total adhesion amount of the adhered portions of the zinc oxide film and the zinc-based metal soap film is an adhesion amount of an adhered portion of the zinc-based metal soap film. 
     
     
         4 . The plated steel sheet for hot stamping according to  claim 1 , wherein the zinc-based metal soap film is a film of at least one zinc-based metal soap selected from the group consisting of zinc bis-octanoate, zinc octylate, zinc laurate, and zinc stearate. 
     
     
         5 . (canceled) 
     
     
         6 . A method of manufacturing a plated steel sheet for hot stamping, the method comprising a forming a zinc-based metal soap film on a surface of an aluminum plating layer side of a plated steel sheet body, including a steel sheet and an aluminum plating layer provided on one side or both sides of the steel sheet, in such a manner that an adhesion amount of an adhered portion is from 7.1 to 19.8 g/m 2  based on a Zn amount. 
     
     
         7 . A method of manufacturing a plated steel sheet for hot stamping, the method comprising a forming a zinc-based metal soap film on a surface of a zinc oxide film of a plated steel sheet body having a steel sheet, an aluminum plating layer provided on one side or both sides of the steel sheet, and the zinc oxide film provided on the aluminum plating layer, in such a manner that a total adhesion amount of an adhered portion of the zinc-based metal soap film together with an adhesion amount of an adhered portion of the zinc oxide film is from 7.1 to 19.8 g/m 2  based on a Zn amount. 
     
     
         8 . The method of manufacturing a plated steel sheet for hot stamping according to  claim 7 , wherein, in the forming the zinc-based metal soap film, at least half of the total adhesion amount of the adhered portions of the zinc oxide film and the zinc-based metal soap film is the adhesion amount of the adhered portion of the zinc-based metal soap film. 
     
     
         9 . The method of manufacturing a plated steel sheet for hot stamping according to  claim 6 , comprising a heating the zinc-based metal soap film at 300° C. or higher and obtaining a zinc oxide film. 
     
     
         10 . The method of manufacturing a plated steel sheet for hot stamping according to  claim 9 , wherein a maximum value of a skewness Rsk of a surface roughness curve of the zinc oxide film formed by heating the zinc-based metal soap film is less than 0. 
     
     
         11 . The method of manufacturing a plated steel sheet for hot stamping according to  claim 6 , wherein the zinc-based metal soap film is a film of at least one zinc-based metal soap selected from the group consisting of zinc bis-octanoate, zinc octylate, zinc laurate, and zinc stearate. 
     
     
         12 . A method of manufacturing a hot-stamped component, the method comprising:
 a manufacturing a plated steel sheet for hot stamping according to the method of manufacturing a plated steel sheet for hot stamping according to  claim 6 , wherein, in the forming the zinc-based metal soap film, at least the zinc-based metal soap film is formed on a surface, which is to be in contact with a sliding surface of a mold for hot stamping in a later hot stamping, in the surface of the plated steel sheet body on the aluminum plating layer side; and   a hot stamping of subjecting the plated steel sheet for hot stamping to hot stamping.   
     
     
         13 . A method of manufacturing a hot-stamped component by hot stamping a plated steel sheet for hot stamping manufactured by the method of manufacturing a plated steel sheet for hot stamping according to  claim 10 . 
     
     
         14 . A method of manufacturing a vehicle, wherein a stamped component manufactured by the method of manufacturing a hot-stamped component according to  claim 12  is attached with the surface of the zinc oxide film facing an outer side of the vehicle. 
     
     
         15 . A method of manufacturing a vehicle, wherein a stamped component manufactured by the method of manufacturing a hot-stamped component according to  claim 13  is attached with the surface of the zinc oxide film facing an outer side of the vehicle.