Experimental Study on Initial Residual Stress and Machining Deformation of 17-4PH Hydraulic Valve Flexible Rod Material
Hydraulic valve flexible rods are typical components with low rigidity,and such parts commonly experience out-of-tolerance deformation during machining.Existing studies mainly focus on controlling part deformation during the cutting process.This paper investigates the initial residual stress of 17-4PH stainless steel rods from different material batches and under various heat treatment conditions,as well as its impact on machining deformation.Using X-ray diffraction,the axial and circumferential initial residual stresses of rods from different batches and heat treatment processes were measured.The residual stress distribution patterns and the effects of material batches and heat treatment processes on residual stress were analyzed.Through cutting experiments,the influence of material batches and heat treatment processes on the final machining deformation of parts was explored,and the optimal material batch and heat treatment process were determined.This study provides a reference for high-precision and efficient machining of hydraulic flexible rods.
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