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2000 December m / wont settle rot J because they're They know the WeMcraft rim-he on a TIG Torch means local distributor support no matter where you are2 Sure, you can save a few bucks with something less - but when it counts wouldn't you feel better knowing a Weldcraft distributor is ~ nearby and ready to help? Weldcrafi TIG Torches, because every weld you make counts. Call today for your ! % FREE copy of o Weldcrafi's new d t % Mini-Catalog I~ and find ~2~ ....... J f ~,q~ out how easy it is to get dm~ 1~ k the support the smart J mone,~, counts on in your l~ands. WELDC'RAFr A division of DovaTech, Ltd. 4~9 West Coming Road Beecher, Illinois 60401-0667 800.924.8575 ~wvdovatech.com Circle No. 4 on Reader Info-Card A ~ INDUSTRIESCOMPANY THE BEST FLAW DETECTOR JUST GOT BETTER Using the latest advances in technology, Panametrics has engineered a very powerful digital ultrasonic flaw detector- the fourth generation - EPOCH 4. 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Circle No. 3 on Reader Info-Card • SPECIAL EMPHASIS: WELDING EDUCATION AWS Web site: http'd/www.aws.org Feature Articles Monthly Columns • Program Answers Industry's Call for Entry-Level Welders Press-Time News .............. 7 M. R. Johnsen Manufacturers and educators collaborate in a unique program designed to attract individuals to the welding Washington Watchword ......... 9 profession and satisfy the need for entry-level welders/29 Editorial .................... 10 A Wise Method for Assessing Arc Welding Performance and Quality D. D. Harwig Commentary ................. 12 A systematically developed database of welding parameters for specific applications shows promise for eliminating time-consuming and costly trial-and-error methods that many engineers traditionally use/35 CyberNotes .................. 14 • Training Welders in Mexico A. H. Price Conferences ................. 16 Understanding and accepting cultural differences goes a long way in ensuring training success/41 News of the Industry ........... 18 • Who Will Become a Welder? W. Western New Products ................ 22 A veteran instructor identifies personality traits of those inclined to be welders and uses them to define an approach to instruction that offers the greatest chance of success/45 Welding Workbook ........... 51 • Training for the Future Navy Joining Center ........... 55 D. Landon What starts as an industry in-house training program expands into a work-study course for students from a local high schooV48 Coming Events ............... 56 Welding Research Supplement Brazing Q&A ................. 60 New Literature ............... 62 A New Ferritic-Martensitic Stainless Steel Constitution Diagram M. C. Balmforth andJ. C. Lippold Stainless Steel Q&A ............ 64 The comparison of new equivalency formulae to existing formulae show improved accuracy in predicting microstructure of ferritic and martensitic stainless steel welds/339-s Personnel ................... 66 A Martensite Boundary on the WRC-1992 Diagram -- Part 2: The Effect of Manganese Society News ................. 67 D.J. Kotecki A modification to the WRC-1992 Diagram that takes into account martensite formation will allow the use of one Guide to AWS Services ......... 92 diagram for FN prediction and dissimilar metal joining/cladding situations/346-s WeldingJournal Index ......... 94 The Stress-Relief Cracking Susceptibility of a New Ferritic Steel -- Part 1: Single-Pass Heat-Affected Zone Simulations Classifieds .................. 108 J. G. Nawrocki, et al. Under different heat inputs and postweld heat treatments, a new alloy is tested against a standard alloy used in Welding Consultants Directory .. 110 high-temperature applications/355-s Advertiser Index ............. 113 Control for Weld Penetration in VPPAW of Aluminum Alloys Using the Front Weld Pool Image signal Peer Review ................ 114 B. Zheng, et ai. A model is developed of the relationship between the bottom diameter of a keyhole and the size of the keyhole weld pool as recorded with an image sensing system/363-s Welding Journal (ISSN 0043-2296) is the official monthly publication of the American Welding Soci- ety. Editorialand advertisingoffices are locatedat 550 N.W. LeJeuneRd., Miami, FL 33126; telephone (305) 443-9353. Printed by R. R. Oonnelley& Sons Co., Senatobia, Miss. Subscriptions: $90.00 per year in the United Statesand possessions,foreign countries $130.00. Singlecopies: members$6.00, nonmembers $8.00. Periodicals postage paid at Miami, Fla., and additional mailing offices. POST- MASTER: Send address corrections to Welding Journal, 550 N.W. LeJeune Rd., Miami, FL 33126. Starred (*) items excludedfrom copyright. Readersof the WeldingJournal may make copies of arti- cles for personal,archival, educational or researchpurposes, 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. WELDING JOURNAL I $ RE OF THE G I~\IDU mini in i| w~ I N TER NA TI 0 NA L May 6-10, 2001 Filling the entire International Exposition (I-X) Center Cleveland, Ohio presented by AmericanWelding Society International Welding and Fabricating Exposition and Annual Convention and lUL=mUF,,'~,,]~IVl ~r~JA i,Wllllr4 PRECISION Visit us at www.aws.org or METLALFORMING www.metalforming.com New Recycling Process Uses Lasers to Separate Aluminum A newly developed recycling process employs lasers to iden- Aluminum is now the third most-used material in cars and tify and recover metals from scrap lasers, according to the Auto trucks, and nearly 90% of automotive aluminum is recovered Aluminum Alliance, in conjunction with the U.S. Department and recycled. While this aluminum represents less than 10% of of Energy. The lasers can distinguish between cast and wrought the average motor vehicle by weight, it accounts for about half alloys, as well as separate wrought alloys from each other at of the vehicle's value as scrap. commercially viable rates. "The techniques we're exploring will allow us to recapture During the process, which uses a technique called laser- more of the value and performance capability of the many high- induced breakdown spectroscopy, a laser is used to clean the quality aluminum alloys that are used in our vehicles," said Jim surface of the particle by laser ablation, and then a laser pulse Quinn, staff engineer, General Motors Corp., and chairman of hits the same spot as it moves down a conveyor belt. The second the U.S. Automotive Partnership, Automotive Metals, United laser pulse vaporizes a small amount of material from the States Council for Automotive Research (USCAR).
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