Patent ID: 9744744
Date: 2017-08-29
CPC Classifications: B21D,B32B,C21D,C22C,C23C

Claim:
1. A process for manufacturing a press-formed article by a hot press-forming method, the process comprising: heating and holding a galvanized steel sheet or a hot-dip galvannealed steel sheet, subsequently starting forming the steel sheet at a temperature of 680° C. or more and 750° C. or less in a state in which liquid zinc is present on a surface of the steel sheet; and performing the forming while setting a strain rate at a plastic deformation portion of the steel sheet to be 0.5 seconds wherein the heating and holding of the steel sheet is performed at a temperature of 880° C. or more and 920° C. or less for a period of from 10 seconds to 4 minutes.