Quality control process to assess the aluminized coating characteristics of hot stamped parts
US10481052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2018 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Jul 11, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2560/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of inspecting and determining characteristics of an aluminized coating of a hot stamped part is provided. The method includes removing a sample from the hot stamped part for Glow Discharge Optical Emission Spectrometry (GDOES), analyzing the sample using GDOES, and plotting constituent element weight percentages versus depth on a graph. The method further includes determining points on the graph where constituent elements intersect and where the points of intersection indicate the characteristics of the aluminized coating. The characteristics of the method include, by way of example, a total thickness of the aluminized coating, a thickness of an inter-diffusion layer (IDL), constituents of the aluminized coating, constituents of the hot stamped part, phase composition of the aluminized coating, surface oxidation, and weldability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.