The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2024
Filed:
Jan. 12, 2023
Hyundai Steel Company, Incheon, KR;
Je Youl Kong, Incheon, KR;
Hyundai Steel Company, Incheon, KR;
Abstract
A hot-stamped part is manufactured from a blank using a manufacturing method that includes inserting a blank into a heating furnace. The heating furnace includes heating sections and soaking sections. The blank passes through the heating sections, and through the soaking sections at a temperature of Ac3 to 1,000° C. In the step of heating the blank, a temperature condition in the heating furnace satisfies formula 0<(Tg−Ti)/Lt<0.025° C./mm, wherein Tg denotes a soaking temperature (° C.), Ti denotes an initial temperature (° C.) of the heating furnace, and Lt denotes a length (mm) of the heating sections. An amount of diffusion hydrogen of the hot-stamped part is less than 0.45 ppm and a corrosion rate of the hot-stamped part measured through a copper potential polarization test is less than or equal to 3×10A.