Method for manufacturing magnetostrictive torque sensor shaft
US11866798B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 2017 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | May 11, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24C11/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a method for manufacturing a magnetostrictive torque sensor shaft mounting a sensor portion of a magnetostrictive torque sensor. The method includes conducting heat treatment on a shaft material including chrome steel or chrome-molybdenum steel by carburizing, quenching and tempering, and conducting shot peening on the shaft material after the heat treatment at least on a position where the sensor portion is to be mounted. The shot peening is conducted by firing shot with a particle size of not less than 0.6 mm and a Rockwell hardness of not less than 60 at a jet pressure of not less than 0.4 MPa for a jet exposure time of not less than 2 minutes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.