Hot stamp molded body, and method for producing hot stamp molded body
US10358687B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2014 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Nov 14, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D7/0614
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A hot stamp molded body that can be produced highly efficiently without causing sticking of plating to a mold, when an electrogalvanized steel sheet with a light plating weight is hot-stamped using a rapidly heating method such as Joule heating and induction heating, and can secure favorable paint adhesiveness without a posttreatment such as shotblasting after hot stamping, as well as a method for producing the same. A hot stamp molded body is produced by hot-stamping an electrogalvanized steel sheet which is composed of predetermined components, and is electrogalvanized on each face with a plating weight not less than 5 g/m2 and less than 40 g/m2; and therein a galvanized layer of the hot stamp molded body is configured with 0 g/m2 to 15 g/m2 of a Zn—Fe intermetallic compound and a Fe—Zn solid solution phase as a balance, and in the galvanized layer of the hot stamp molded body 1×10 pcs to 1×104 pcs of particulate matter with an average diameter of from 10 nm to 1 μm are present per 1 mm length of the galvanized layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.