Pemamek’s automated semi-narrow groove welding system handles thick plate

Pemamek LLC has developed an automated semi-narrow groove welding system for welding thick plates from 2 to 6.5 in. This submerged arc welding process uses less consumables over the length of the operation, according to the manufacturer.

The tiltable welding head, equipped with 5/32-in. wire, provides control over the fusion process and weld bead creation. It also helps direct the energy into the side walls of the semi-narrow groove for full penetration. Any unconsumed flux can be vacuumed, circulated, and recycled.

Full welds are possible from the root weld to the surface. For tubular structures, longitudinal and circular milling machines are used to mill the groove root; a 16-degree included angle is standard with an 8-degree radius on the base.