Method for manufacturing magnetostrictive torque sensor shaft
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United States of America Patent
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Jan 9, 2024
Grant Date -
Jul 12, 2018
app pub date -
Dec 26, 2017
filing date -
Jan 11, 2017
priority date (Note) -
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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.
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