밸브스풀용 강재의 봉대봉 이종재 마찰용접의 최적화와 피로강도 특성 및 AE평가

Dissimilar Friction Welding of Hydraulic Valve Spool Steel Bar-to-Bar and The Fatigue Evaluation by AE

This paper deals with the development of fundamental design and manufacturing technique of hydraulic valve spool by optimizing of friction welding, the development of in-process real-time weld quality evaluation technique by acoustic emission and the evaluation of the mechanical properties and the fatigue life about the bar-to-bar dissimilar friction welded hydraulic valve spool steels.