Huntington Ingalls Industries

 

Military shipbuilding company Huntington Ingalls Industries (NYSE:HII) wanted to increase the efficiency of its tube bending facility at Newport News Shipbuilding in Newport News, Virginia.

Largest All-Electric Tube Bender Delivers Massive Savings to Shipyard

Challenge

Military shipbuilding company Huntington Ingalls Industries (NYSE:HII) wanted to increase the efficiency of its tube bending facility at Newport News Shipbuilding in Newport News, 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).
 

Solution

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 all-electric bending design - controlled by software-programmable, closed-loop servomotor axes - allows automatic machine set-up, and delivers extremely high accuracy and repeatability from batch to batch.

Results

HII can now produce right first time bending of tubes and pipes up to 8 inches/220 mm in diameter.

MACHINE FEATURES:

  • Low loading height of just 60 inches (1524 mm)
  • Compact bend head enables fabrication of  intricate shapes without danger of collision
  • Long (up to 9 m) and complex pipe shapes  can be bent in one process
  • High torque provides the capability for bending piping made from specialist high strength and/or corrosion-resistant alloys
  • Laser-controlled Springback correction system saving expensive wastage
  • Programmability allows bending programs to be highly optimised for each particular application, to achieve goals such as bending  brittle materials, or retaining as much wall thickness as possible after bending
  • CAD interface

More Case Studies

See all