MECHANICAL STRUCTURAL MEMBER AND METHOD FOR MANUFACTURING SAME
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United States of America Patent
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Issued Date -
Oct 10, 2024
app pub date -
Apr 26, 2023
filing date -
May 9, 2022
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Abstract
Provided is a mechanical structural member that can suppress deformation and has high precision and excellent quality. In a mechanical structural member (triangular threaded shaft 31) in which grooves (32) and teeth (33) are formed by plastic working and a hardened layer (31a) is formed on a surface of the teeth (33), the mechanical structural member has a sorbite structure, and Rockwell hardness in a region P excluding the hardened layer (31a) is 13 to 28 (HRC). A variation in the Rockwell hardness in the region P excluding the hardened layer (31a) is within 6 (HRC).
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