Geometry of Pulse Current GMA Weld

Variation in geometry of P-GMA weld as a function of pulse parameters has been discussed in order to understand the control of welding process to produce desired weld geometry of required chemistry for an acceptable weld quality. The mechanism of the cont

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Prakriti Kumar Ghosh

Pulse Current Gas Metal Arc Welding Characteristics, Control and Applications

Materials Forming, Machining and Tribology Series editor J. Paulo Davim, Aveiro, Portugal

More information about this series at http://www.springer.com/series/11181

Prakriti Kumar Ghosh

Pulse Current Gas Metal Arc Welding Characteristics, Control and Applications

123

Prakriti Kumar Ghosh Department of Metallurgical and Materials Engineering Indian Institute of Technology Roorkee Roorkee, Uttarakhand India

ISSN 2195-0911 ISSN 2195-092X (electronic) Materials Forming, Machining and Tribology ISBN 978-981-10-3556-2 ISBN 978-981-10-3557-9 (eBook) DOI 10.1007/978-981-10-3557-9 Library of Congress Control Number: 2017932417 © Springer Nature Singapore Pte Ltd. 2017 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. The publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Printed on acid-free paper This Springer imprint is published by Springer Nature The registered company is Springer Nature Singapore Pte Ltd. The registered company address is: 152 Beach Road, #21-01/04 Gateway East, Singapore 189721, Singapore

The book is dedicated to my beloved parents and in-laws

Contents

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1 3 5 5 6 8 9 17 18 19 19 20 24 25

2 Concept of Pulse Current Gas Metal Arc Welding Process . . . . 2.1 Basic Process Variables and Control . . . . . . . . . . . . . . . . . . . 2.2 Phenomena of Metal Transfer . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.1 Mechanism of Drop Detachment . . . . . . . . . . . . . . . . . 2.2.2 Nature of Metal Transfer . . . . . . . . . . . . . . . . . . . . . . . 2.2.3 Role of Pulse Parameters . . . . . . . . . . . . . . . . . . . . . . 2.3 Thermal Characteristics of the Process . . . . . . . . . . . . . . . . . . 2.3.1 Wire Melting . . . . . . . . . . . . . . .