HIGH FATIGUE STRENGTH BOLT AND METHOD OF MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a bolt improved in fatigue strength without changing chemical components of the current material or a bolt shape, and a method of manufacturing the same. SOLUTION: The method of manufacturing the high fatigue strength bolt is characterized in that cavitation jet is ejected to a screw trough part from an incomplete screw part to a part where three threads are fitted from a fitted end of the bolt and a nut of a screw part of the bolt. COPYRIGHT: (C)2011,JPO&INPIT