The Research On Hydraulic Vibration Aging Stress Elimination Devices

After casting,forging,machining,welding and other processes,the workpiece will produce stress its internal,so that the workpiece will be highly prone to damage in use.The workpiece must be aging to eliminate the internal stress.But with the development of science and technology,the traditional thermal aging and natural aging has been unable to meet the needs of machinery manufacturing industry,so there urgent need for a new aging treatment with the advantages of energy-saving,high efficiency,environmental protection etc.So that VSR processing is produced.In this paper will abandon the inertial excitation mode,and design a hydraulic vibration stress elimination device based on hydraulic vibration technology.The paper is divided into five chapters,the main as follows:In the first chapter,will introduce the research background,purpose and meaning,describe the Research Status of VSR technology international,analysis the strengths and shortcomings,and propose new ideas and research.In chapter2,the causes of residual stress and classification were described under the elastic model.From the view of stress-strain principle of the metal and micro-mechanics,the principles and methods of low-frequency vibration to elimination of residual stress was analyzed,In chapter3,research the characteristics of VSR process;analyze the selection method of the process parameters on the excitation power,excitation frequency and excitation time;prepare process parameters for the VSR device’s design.In chapter4,design the hydraulic excitation system.Based on the theory of hydraulic vibration technology,design all part of the hydraulic excitation system.And focus on researching working principle,structure characteristics of the core component of the shock device,so to design its parameters.In chapter5,complete the overall design of hydraulic vibration aging Stress Elimination Devices.And according to the actual of artifact types show two sets system solutions.Then simulations,obtained the effects of various parametric on the system,and provide the selection of VSR processing parameters.In chapter6,summarizes the research results of this paper,put forward the strengths and weaknesses,Prospects further study in future.