Welding Techniques, Distortion Control and Line Heating

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Welding techniques and associated weld distortion problems encountered in heavy industries are very typical and need to be dealt with from a view point of their requirements. Welding Techniques, Distortion Control and Line Heating covers in detail aspects of welding, distortion control and line heating in the context of heavy fabrication, shipbuilding and offshore industry and includes different welding methods used namely SMAW, GMAW, GTAW, SAW, Electro gas, Electro slag and Friction Stir Welding. This book discusses in detail weld induced distortion mechanism, types of distortions, their estimation using finite element analysis, various distortion control mechanisms namely controlled heat input, structural fit-up, thermal tensioning and heat sinking, effect of welding sequence on fabrication of stiffened panels. Table Of Contents Preface  Acknowledgement  Introduction: Welding Welding Distortion  Line Heating  Arc Welding: Arc Welding Power Sources  Welding Parameters and their Effects  Welding Processes  Welding Techniques  Welding Design  Friction Stir Welding: Tool Geometry  Tool Shoulder Material and Backing Material Heat Generation  Heat Transfer into Tool and Work Piece Finite Element Heat Flow Model  Basic FSW Metallurgy  Defects and their Detection  Advantages and Disadvantages of the FSW Process  Friction Stir Welding Trial  Welding Distortion: Distortion Mechanism  Types of Distortion and their Prediction  Finite Element Analysis of Distortion  Distortion Control: Design Considerations  Structural Fit up  Heat Input  Alteration of Thermal Pattern  Welding Sequence  Summary Residual Stress: Sources of Residual Stresses  Welding Residual Stress Formation Prediction of Welding Residual Stresses Line Heating: Thermal Analysis  Mechanical Analysis Artificial Neural Networks  Plastic Strain Distribution  Compound Curved Surface Generation References  Index.