Electroslag welding

An electric arc is initially struck by wire that is fed into the desired weld location and then flux is added.

Electroslag welding is used mainly to join low carbon steel plates and/or sections that are very thick.

In 1968 Hobart Brothers of Troy, Ohio, released a range of machines for use in the shipbuilding, bridge construction and large structural fabrication industries.

[4] The FHWA commissioned research from universities and industry and Narrow Gap Improved Electro Slag Welding (NGI-ESW) was developed as a replacement.

The process is also very efficient, since joint preparation and materials handling are minimized while filler metal utilization is high.