Pulse current gas metal arc welding : characteristics, control and applications

• Main Author: Ghosh, Prakriti Kumar (Author)
• Format: Electronic eBook
• Language: English
• Published: Singapore : Springer, 2017.
• Series: Materials forming, machining and tribology.
• Subjects: Gas metal arc welding.; elektronické knihy; electronic books
• ISBN: 9789811035579; 9789811035562
• Physical Description: 1 online resource

This monograph is a first-of-its-kind compilation on high deposition pulse current GMAW process. The nine chapters of this monograph may serve as a comprehensive knowledge tool to use advanced welding engineering in prospective applications. The contents of this book will prove useful to the shop fl...

Table of Contents:

• About the Author; Nomenclature; 1 Introduction to Gas Metal Arc Welding Process; Abstract; 1.1 Behaviour of Metal Transfer; 1.2 Thermal Characteristics of GMAW Process; 1.2.1 Melting of Filler Wire; 1.2.2 Thermal Nature of Metal Transfer ; 1.3 Thermal Description of Weld; 1.3.1 Effect of Heat Flow; 1.3.2 Effect of Fluid Flow; 1.3.3 Effect of Metal Transfer ; 1.4 Weld Characteristics; 1.4.1 Weld Geometry; 1.4.2 Microstructure; 1.4.3 Weld Defects; References; 2 Concept of Pulse Current Gas Metal Arc Welding Process; Abstract; 2.1 Basic Process Variables and Control.
• 2.2 Phenomena of Metal Transfer2.2.1 Mechanism of Drop Detachment; 2.2.2 Nature of Metal Transfer; 2.2.2.1 One Drop Transfer Per Pulse; 2.2.2.2 Multi Drop Transfer Per Pulse; 2.2.3 Role of Pulse Parameters; 2.3 Thermal Characteristics of the Process; 2.3.1 Wire Melting; 2.3.2 Thermal Behaviour of Droplet ; References; 3 Basic Nature of Pulse Current GMA Welding; Abstract; 3.1 Governance of Pulse Characteristics; 3.2 Arc Characteristics in Welding of Different Materials; 3.2.1 Arc Profile of Pulse on Period; 3.2.1.1 Aluminium Alloy; 3.2.1.2 Stainless Steel; 3.2.1.3 Mild Steel.
• 3.2.2 Arc Profile of Pulse off Period3.2.2.1 Aluminium; 3.2.2.2 Stainless Steel; 3.2.2.3 Mild Steel; 3.2.3 Arc Stiffness; 3.2.3.1 Aluminium; 3.2.3.2 Stainless Steel; 3.2.3.3 Mild Steel; 3.2.4 Arc Efficiency; 3.2.4.1 Al- Mg Alloy; 3.2.4.2 Mild Steel; 3.2.4.3 Stainless Steel; 3.2.5 Arc Stability; 3.3 Shielding of Arc Environment; 3.3.1 Aluminium Alloy; 3.3.2 Stainless Steel; 3.3.3 Mild Steel; 3.3.4 Theoretical Analysis of Metal Transfer; 3.3.5 Transfer Behaviour of Different Materials; 3.3.6 Aluminium; 3.3.7 Stainless Steel; 3.3.8 Mild Steel; References.
• 4 Thermal Behaviour of Pulse Current Gas Metal Arc WeldAbstract; 4.1 Analytical Model of Thermal Behaviour; 4.1.1 Influence of Arc Heating; 4.1.2 Influence of Superheated Filler Metal; 4.2 Influence of Metal Transfer; 4.2.1 Cavity Formation in Weld Pool; 4.2.2 Temperature Distribution in Weld; 4.3 Thermal Nature of Welding Process; 4.4 Thermal Behaviour of Weld; 4.4.1 Temperature of Weld Pool ; 4.4.2 Temperature of HAZ; References; 5 Geometry of Pulse Current GMA Weld; Abstract; 5.1 Weld Bead on Plate Deposition; 5.1.1 Depth of Penetration; 5.1.2 Width of Weld Bead.
• 5.1.3 Height of Bead Reinforcement5.1.4 Area of Bead Deposit; 5.1.5 Weld Bead Toe Angle; 5.1.6 Deposition form factor; 5.1.7 Base Metal Fusion; 5.1.8 Dilution; 5.2 Non Conventional Bead on Plate Weld Deposition; 5.2.1 Weld Deposition of Flux Cored Wire; 5.2.2 Stainless Steel Cladding; 5.2.3 Out of Position Weld Deposition; 5.3 Weld Joint; 5.3.1 Flat Butt Welding; 5.3.2 Positional Welding; References; 6 Characteristics of P-GMA Weld Joint; Abstract; 6.1 Metallurgical Characteristics; 6.1.1 Chemistry of Weld; 6.1.2 Solidification of Weld Pool; 6.1.3 Porosity in Weld.