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Narrow-Gap Improved Electroslag Welding for Bridges
FHWA Demonstration Project DP-102

Nebraksa Agenda

University of Nebraska-Scott Engineering Center - Room 183
(North of 17th & Vine Streets -- Lincoln, Nebraska)
December 1-3, 1998

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DECEMBER 1 - 1:00 PM

SESSION 1 Registration and Introductions ---Bruce Lind, Nebraska Division Administrator, FHWA ---Eldon Orth, Material &Tests Engineer, NDOR ---Dr. Dimitri Risos, Assistant Director, NaBRO ---Krishna Verma, Welding Engineer, FHWA DEMONSTRATION WELD #1-(Introduction to NGI ESW) Executive Overview Introduction to electroslag welding Advantages/disadvantages (compared to other processes) Break 3:00 PM Development of Narrow Gap Improved ESW ( NGI-ESW)

15   30 20 40 10   120

DECEMBER 2, 8:00 AM

SESSION 2 Equipment Requirements Fluxes and Filler Metal Consumable Requirements Break 9:30 AM Setup and Operation DEMONSTRATION WELD #2: (butt or transition weld) Summary and Discussion: Day 1

70 20   60 70 200

DECEMBER 2, 1:00 PM

SESSION 3 Non Destructive Examination and Quality Assurance Operator controls and adjustments or "What to Do if" DEMONSTRATION Weld #3 (typical problems and real time adjustments) Break 3:00 PM Weld Repair Mechanical Properties Distortion Discussion

45 25 80   30 30 15 15

DECEMBER 3, 8:00 AM

SESSION 4 RECAP: Factors Affecting Quality of NGI-ESW Cost Comparison : NGI-ESW vs SAW DEMONSTRATION WELD #4 (Transition or butt) Vendor List : ESW Equipment Specifications for NGI-ESW Proposed for Bridge Welding Code Technical Support for NGI-ESW Break 9:30 AM Workshop Summary: NGI-ESW Questions/Discussion Pass Out/Complete Questionnaire/Evaluation Acknowledgments

15 20 75 15 20 5   30 30 15 5