Product Applications – Pipe Cutting
Gullco KAT Travel Carriage Automated Cutting System with KAT Track Rings and Cutting Torches: Saipem Oxy-Fuel Cutting Case Study
Product Application File – Saipem uses Kat Rings For Oxy-Fuel Cutting
Image to the left: One of the 1.9m rings used during manufacturing with the KAT travel Carriage fitted on the formed KAT track ring.
Several years ago Saipem was faced with the need to cut large diameter pipe that was used in driven pile applications. The difficult was that the oxy-fuel cutting had to be parallel to the horizon while the piles were not always truly vertical. Saipem consequently contacted Gullco International (UK) Limited through one of their distributors for assistance. Gullco devised a solution using their world famous Kat Travel carriage system. The Kat is used to automated a wide variety of cutting and welding applications. Welding guns or, in this case cutting torches are mounted on the carriage which travels at precisely controlled speeds on special Kat track along any plane. The Saipem application required several innovation modifications in order to achieve the specified horizontal cut. The Gullco solutions was comprised of Kat track formed into rings which enabled the Kat carriage to travel around the outside diameter of the pipe. Steel bands used to support the track rings were produced.
Image to the right: Due to the elliptical path that the Kat takes around the pipe a spring loaded float is required to maintain the torch height to work. The complete unit is shown here being tested.
They were bolted to the pipe and the rings were suspended from the bands and positioned using an adjustable swivel mechanism and clamping assembly. This allowed the Kat tack rings to swivel, enabling a cut at an angle other than 90 to the pipe’s centre line. The result; accurate, cost effective, mechanized cutting solution for a difficult application. Gullco has recently supplied three meter systems of the same design.
Swivel mechanism. A section of the track ring is visible in the bottom left of the picture.
Close-up of clamping assembly.