Bener Qua Heat-Affected Zone Owing
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» » » July 2005 -•.'•" Bener Qua '_!. owing the Heat-Affected Zone RSW Power Supply Welding Standardization PUBLISHED BY THE AMERICAN WELDING SOCIETY TO ADVANCE THE SCIENCE, TECHNOLOGY AND APPLICATION OF WELDING AND ALLIED PROCESSES, INCLUDING JOINING, BRAZING, SOLDERING, CUTTING, AND THERMAL SPRAYING Creating a New Force in Hardsurface Welding... Jeff Schnabel and Select-Arc. When Jeff Schnabel joined comprehensive group of most demanding the Select-Arc team of hardsurfacing electrodes, hardsurfacing electrode welding specialists, he specifically developed to requirements. envisioned adding a new improve your welding The many customers who dimension to the productivity, enhance have depended on Select- company's highly regarded performance and extend Arcs quality electrode flux cored and metal cored the life of components products, superior service and machinery. Jeff SELECT product lines. 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Compare 800 exhibits and more lhan 2,000 machines in action. Consult with thousands of technical experts who can help you work smarter and run a leaner, more competitive operation. Evaluate more than 300 new products to boost your productivity. Select from over 50 conference sessions lo maximize performance. At last, there's one show where you can easily evaluate options, upgrade critical skills and stay on top ofthe latest innovations. It really doesn't get any sweeter than thisl November 13-16, 2005 McCormick Place South INTERNATIONAL© J*»«M Chicago, Illinois USA WELDING SHOT North America's Largest Metal Forming Fabricating & Welding Event Register online today for free show admission! www.aws.org/expo Circle No. 5 on Reader Info-Card CONTENTSJuly 2005 • Volume 84 • Number 7 AWS Web site http://www.aws.org SOLID /ELD FUSION SOLUTION Features Departments ONE ZONE ZONE Press Time News 4 22 Aluminum Weld HAZ Fundamentals A guide to understanding aluminum alloys helps avoid Editorial 6 problems with the heat-affected zone T. Anderson CyberNotes 7 26 Understanding Stainless Steel Heat-Affected News olfhe Industry 8 Zones Letters to the Editor 12 PARTIALLY OVER UN/ Know the grades of stainless steel that are subject to ANNEALED AGED potential problems with the HAZ Stainless Q&A 16 ZONE ZONE C. Meadows and J. D. Fritz New Products 18 32 Power Supply Designed for Small-Scale Welding Workbook 47 Resistance Spot Welding A unique power supply provides a testing bench for Coming Events 48 studies of different weld schedules and control methods for RSW Society News 51 L. J. Brown and J. Lin Tech Topics 62 37 Exploring Temper Bead Welding Standards Errata Temper bead welding is explained as a means of improving the properties of the deposited weld metal Guide to AWS Services 77 and the heat-affected zone W. J. Sperko Conferences 79 41 Hobart Marks 75 Years of Welder Education Navy Joining Center 80 Festivities mark the 75th anniversary of a well-respected learning center for welding Personnel 81 H. M. Woodward New Literature 82 44 Standardization in Welding Classifieds 84 Liquid The pursuit for consensus on globally relevant standards continues Advertiser Index 86 J.-P. Gourmelon Welding Research Supplement 101-s Reliable Calculations of Heat and Fluid Flow during Conduction Mode Laser Welding through Optimization of Uncertain Parameters To improve the reliability of heat transfer and fluid flow prediction calculations, optimized values for process variables were factored into the model A. De and T. DebRoy 113-s Properties and Sulfide Stress Cracking Resistance Welding Journal (ISSN 0043-2296) is published of Coarse-Grained Heat-Affected Zones in monthly by the American Welding Society for V-Microalloyed X60 Steel Pipe S90.00 per year in the United States and posses Thermal simulations that induced coarse-grain sions, $130 per year in foreign countries: $6.00 per conditions in the HAZ aided a study on postweld heat single issue for AWS members and $8.00 per sin treatment schedules for high-strength steel pipe gle issue for nonmembers. American Welding So J. E. Ramirez et al. ciety is located at 550 NW LeJeune Rd., Miami. FL 33126-5671; telephone (305) 443-9353. Periodi cals postage paid in Miami, Fla., and additional mail ing offices. POSTMASTER: Send address changes to Welding Journal. 550 NW LeJeune Rd., Miami. FL 33126-5671. Readers of Weldingjoumal may make copies of ar ticles for personal, archival, educational or research purposes, and which are not for sale or resale. Per mission is granted to quote from articles, provided customary acknowledgment of authors and sources is made. Starred (*) items excluded from copyright. • , WELDING JOURNAL PRESS TIME NEWS WELRIMG Mazda Develops Steel and Aluminum Joining Technology Publisher Andrew Cullison that Uses Friction Heat Editorial Editor/Editorial Director Andrew Cullison According to Mazda Motor Corp., Hiroshima, Japan, it has developed the world's Senior Editor Mary Ruth Johnsen first direct spot joining technology to join steel and aluminum. j\ssociate Editor Howard M. Woodward This new technology was first employed in 2003 in the development of the company's Assistant Editor Kristin Campbell RX-8 sports car, and used friction heat to join separate aluminum sheets. The technol Peer Review Coordinator Doreen Kubish ogy has evolved and will be used to join the trunk lid and bolt retainer for the company's updated MX-5 sports car. Publisher Emeritus Jeff Weber Welding two different metals such as steel and aluminum has been a difficult task — Graphics and Production but by optimizing the rotating tool shape and joining characteristics, and by using galva Managing Editor Zaida Chavez nized steel on one side, joining steel and aluminum has been made possible. The process Production Assistant Brenda Flores is similar to that of joining two pieces of aluminum when a joining gun holds the parts from both sides with a welding tool.