DRIVERS AND TRENDS
High productivity in this competitive industry has been the dominating trend and led to the extensive use of high efficiency electrodes, single arc, and multi-arc submerged arc systems such as twin-arc and tandem-arc, as well as high productivity flux-cored wires.
ALLOYS AND PROCESSES
Steel grades in regular sea going ships and inland barges are designed with regular and HT ship steel grades ranging from grade A up to grade EH 40, according ASTM A 131/A 131M, “Standard Specification for Structural Steel for Ships”. Special ships incorporate more complex components and different internal constructions, such as in chemical carriers, using UNS S31653 (AISI 316LN) or S32205 (Duplex Stainless steel). Duplex stainless steels offer the combination of high strength and corrosion resistance, allowing more chemicals to be transported in these vessels. Aluminum alloys are lightweight, and provide good corrosion and fatigue resistance in complete or partial ship structures.
The most widely used welding processes in the industry are SMAW, FCAW and SAW.
860 with L61 wire
CV425 with LF33 wire feeders
SPEEDTEC® 405S with PF40 wire feeder
POWER WAVE® S350