Die construction methodology for reducing quench time for press hardenable steels
US11427879B2 · kind B2 · utility
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Key dates
| Filing date | May 2, 2018 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Mar 27, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D22/022
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of quenching a press hardenable steel (PHS) is provided. The method includes preparing a die having a material with a thermal conductivity of at least 40W/(m·K) and placing a blank within the die and simultaneously hot stamping and quenching the blank at a heat transfer coefficient of at least 2,950W/(m2·K). In one form, the step of hot stamping the blank is carried out with greater than 20 MPa of contact pressure between the die and the blank. In another form, the step of hot stamping the blank is carried out with 31 MPa of contact pressure between the die and the blank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.