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The primary tasks of DP-102 are to transfer the new ESW technology to State DOTs and bridge fabricators so that the NGI ESW process may be confidently applied to production welds for bridge members. The project is intended to accomplish the following tasks:

  • Ensure the availability of NGI ESW equipment and materials

  • Test the new NGI ESW equipment, electrode wire, flux, and procedure

  • Develop guiding and governing documents required for implementations of NGI ESW

  • Ensure that the minimum specified weld toughness can be consistently reproduced

  • Conduct a series of workshop presentations and NGI ESW demonstrations for State DOTs, FHWA representatives, and steel bridge fabricators

electroslag welding -Close-up View of Consumable Guide Flux Feeding System and Copper Shoes During Welding
Close-up View of Consumable Guide Flux Feeding System and Copper Shoes During Welding

The workshop will include both slide and video presentations to discuss FHWA-sponsored NGI-ESW operating techniques, inspection procedures, and specifications applicable to NGI ESW. Also, hands-on demonstrations in a shop or a suitable similar facility will take place. The handout material will include a training manual and a copy of the proposed specifications.

electroslag welding - Continuous Monitoring of Voltage and Amperage During Welding
Continuous Monitoring of Voltage and Amperage During Welding


For additional information, or to request presentation of this project, please contact the FHWA division office in your State or the Bridge Division, Washington, DC (Mr. Krishna Verma, Welding Engineer (202) 366-4601 or fax (202) 366-3077).

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