President Nathan A. Chiantella, CMfgE John E. Mungerson, CMfgE, PE Reginald W. Barrett, CMfgE IBM Corporation Boeing Commercial Airplane The Pyle National Company Company Frank R. L. Daley, CMfgE, PE Vice President Gary J. Peterson, CMfgE, PE Forrest D. Brummett, CMfgE John J. DiPonio, CMfgE, PE Ford Hewlett-Packard Company General Motors Corporation Vice Motor Company President Donald E. Gardiner Sam C. Petioles, CMfgE Ferris State College Marvin F. DeVries, CMfgE, PE General Electric Company University of Wisconsin-Madison William H. Heffron, Jr., CMfgE Fred W. Randall, CMfgE, PE Vought Corporation Vice President Pitney-Bowes. Inc. DCaotnearlpdi lGla.r ZToroakct,o Cr MCofg. E, PE Kenn Hurt, CMfgE FBroadnikn eJ .C Roirlpeyo,r aCtiMonfg E, PE The Caterpillar Tractor Co. Secretary/Treasurer Neal P. Jeffries, CMfgE, PE Center George W. Stambaugh, PE John E. Mayer, Jr., CMfgE for Manufacturing Production Grinding. Inc. Kennametal. Inc. Technology Frank M. Trcka, CMfgE, PE Robert C. Klassen, CMfgE Custom Bourns. Inc. Engineering, Inc. Earl E. Walker HDeeVrbleiertg AM. aBcehyineer Company RUonbiteerdt ES.t aKtersa uAcrhm, Jyr ., CMfgE, PE CaCrro Lmapnaen My anufacturing Douglas E. Booth, CMfgE, PE Chemical Research and Livernois Automation Company Development Center Paul F. Boyer, CMfgE, PE Union Jerry L. Lyons, CMfgE, PE Essex Carbide Corporation Industries. Inc. Charles F. Carter, Jr., CMfgE, PE Frank H. McCarty, CMfgE, PE WExiellciuamtiv Je. VHiicltey P resident Cincinnati Milacron. Inc. Raytheon Company and General Manager OFFICERS AND DIRECTORS, 1983-1984 SOCIETY OF MANUFACTURING ENGINEERS ISBN No. 0-87263-135-4 Library of Congress Catalog No. 82-60312 Society of Manufacturing Engineers (SME) Copyright 1984,1976,1959. 1949 by Society of Manufacturing Engineers, One SME Drive, P.O. Box930, Dearborn, Michigan 48121 All rights reserved, including those of translation. This book, or parts thereof, may not be reproduced in any form without written permission of the copyright owner. The Society does not, by publication of data in this book, ensure to anyone the use of such data against liability of any kind, including infringement of any patent. Publication of any data in this book does not constitute a recommendation of any patent or proprietary right that may be involved. The Society of Manufacturing Engineers disclaims any and all responsibility for use of the information contained herein by readers and users of this Handbook. First edition published 1949 by McGraw-Hili Book Co. in cooperation with SME under earlier Society name, American Society of Tool Engineers (ASTE), and under title: Tool Engineers Handbook. Second edition published 1959 by McGraw-Hili Book Co. in cooperation with SME under earlier Society name, American Society of Tool and Manufacturing Engineers (ASTME), and under title: Tool Engineers Handbook. Third edition published 1976 by McGraw-Hili Book Co. in cooperation with SME under current Society name, and under title: Tool and Manufacturing Engineers Printed in the United States of America Handbook. TMEH TM The first edition, published as the Tool Engineers Handbook in 1949, established a useful and authoritative editorial format that was successfully expanded and improved upon in the publication of highly acclaimed subsequent editions, published in 1959 and 1976 respectively. Now, with continuing dramatic advances in manufacturing technology, increasing competitive pressure both in the United States and abroad, and a significant diversification of informational needs of the modern manufacturing engineer, comes the need for further expansion of the Handbook. As succinctly stated by Editor Frank W. Wilson in the preface to the second edition: "...no 'Bible' of the industry can indefinitely survive the impact of new and changed technology. " Although greatly expanded and updated to reflect the latest in manufacturing technology, the nature of coverage in this edition is deeply rooted in the heritage of previous editions, constituting a unique compilation of practical data detailing the specification and use of modern manufacturing equipment and processes. Yet, the publication of this edition marks an important break with tradition in that this volume, dedicated solely to forming technology, is the second of five volumes to be published in the coming years, to comprise the fourth edition. Volume I, Machining, was published in March 1983. Other volumes of this edition will include: Materials, Finishing and Coating; Quality Control and Assembly; and Management. The scope of this edition is multifaceted, offering a ready reference source of authoritative manufacturing information for daily use by engineers, managers, and technicians, yet providing significant coverage of the fundamentals of manufacturing processes, equipment, and tooling for study by the novice engineer or student. Uniquely, this blend of coverage has characterized the proven usefulness and reputation of SME Handbooks in . previous editions and continues in this edition to provide the basis for acceptance across all segments of manufacturing. The scope of this volume encompasses both conventional and special forming methods, covering in detail the fundamentals, capabilities and limitations, and applications of all processes. Included are discussions of presses and machines used, dies and other tooling, operating parameters, troubleshooting guidelines, and safety considerations. Individual chapters are devoted to sheet metal formability, die and mold materials, lubricants, die design, powder metallurgy, and plastics forming. Every aspect of forming technology is provided in-depth coverage in this volume, presented in a completely new, easy-to-read format. An exhaustive index that cross references processes, equipment, tools, and work piece materials enhances readability and facilitates the quick access of information. Liberal presentation of illustrations, graphs, and tables speeds information gathering and problem solving. PREFACE The Society of Manufacturing Engineers is a professional engineering society dedicated to advancing manufacturing technology through the continuing education of manufacturing engineers, managers, and technicians. The specific goal of the Society is "to advance scientific knowledge in the field of manufacturing engineering and to apply its resources to research, writing, publishing, and disseminating information." The Society was founded in 1932 as the American Society of Tool Engineers (ASTE). From 1960 to 1969, it was known as the American Society of Tool and Manufacturing Engineers (ASTME), and in January 1970 it became the Society of Manufacturing Engineers. The changes in name reflect the evolution of the manufacturing engineering profession, and the growth and increasing sophistication of a technical society that has gained an international reputation for being the most knowledgeable and progressive voice in the field. The Society has some 70,000 members in 65 countries, most of whom are affiliated with SME's 270-plus senior chapters. The Society also sponsors more than 110 student chapters at universities and colleges. As a member of the World Federation of Engineering Organizations, S ME is the universally acknowledged technical society serving the manufacturing industries. SME SME staff who participated in the editorial development and production of this volume include: Thomas J. Drozda Division Manager. Editorial Susan J. Leinart Johanne.D. Kanney Assistant Supervisor Assistant Manager Charles Wick Manager, Reference Publications Shari L. Rogers Michael McRae Typesetter Operator Key liner John T. Benedict Senior Staff Editor Christine Marie Keyliner Raymond F. Veilleux Associate Editor Gerri J. Andrews Technical Copy Editor Shirley A. Barrick Editorial Secretary Judy A. Justice Word Processor Operator The reference material contained in this volume is the product of incalculable hours of unselfish contribution by hundreds of individuals and organizations, as listed at the beginning of each chapter. No written words of appreciation can sufficiently express the special thanks due these many forward-thinking professionals. Their work is deeply appreciated by the Society; but more important, their contributions will undoubtedly serve to advance the understanding of forming technology throughout industry and will certainly help spur major productivity gains in the years ahead. Industry as a whole will be the beneficiary of their dedication. Further recognition is due the members of the SME Publications Committee for their expert guidance and support as well as the many members of the SME Technical Activities Board, particularly the members of the Material Forming Council. The Editors EDITORIAL TYPESETTING GRAPHICS Symbols and Abbreviations...............................................................................................................xi Sheet Metal Formability......................................................................................................................1-1 Die and Mold Materials......................................................................................................................2-1 Lubricants...................................................................................................................................... 3-1 /SheetMetalBlankingandForming.........................................................................................................4-1 Presses for Sheet Metal Forming......................................................................................................5-1 /DieDesignforSheetMetalForming.......................................................................................................6-1 Expanding, Shrinking and Stretch Forming.......................................................................................7-1 Roll Forming..................................................................................................................................8-1 Spinning.........................................................................................................................................9-1 Bending and Straightening.............................................................................................................10-1 Shearing.......................................................................................................................................11-1 Punching......................................................................................................................................12-1 Drawing, Extruding and Upsetting ..;.............................................................................................13-1 Swaging.......................................................................................................................................14-1 Hot Forging..................................................................................................................................15-1 Casting.........................................................................................................................................16-1 Powder Metallurgy.......................................................................................................................17-1 Plastics Forming...........................................................................................................................18-1 Special Forming Methods..............................................................................................................19-1 Safetyin Forming..........................................................................................................................20-1 Index...................................................................................................... .......................................1-1