Military shipbuilding company Huntington Ingalls Industries (NYSE:HII) wanted to increase the efficiency of its tube bending facility at Newport News Shipbuilding in Virginia. Having converted from hydraulic machinery to Unison’s all-electric bending technology several years’ earlier, they looked to the technology pioneers Unison for the expertise to figure out their latest challenge to develop an all-electric machine able to bend piping up to nominal diameter of 8 inches with Schedule 40 wall thicknesses of over 8 mm (with an outside diameter of 8.65 inch or approx. 220 mm).
Unison had to overcome many major engineering challenges to build this landmark machine. The Research & Development team worked on the concept for over a year to finally develop a machine offering an advanced and highly productive alternative to the hydraulically-powered machines that are typically used today for bending large diameter tubing and piping. Its allelectric bending design, controlled by programmable software, closed-loop servomotor axes, allows automatic machine setup, and delivers extremely high accuracy and repeatability from batch to batch.
LHII can now produce right first-time bending of tubes and pipes up to 8 inches/220 mm in diameter.