PRODUCTION • PROCESSING • HANDLING
pipe systems and accessories for the offshore market and has been using the HPF system. “Te system is universal for working pressures up to 420 bar and is therefore a versatile application method. As we provide solutions for the offshore and underwater markets, this aspect is very important for us. In contrast to conventional O-rings, the special profile seal is particularly resistant to gap extrusion,” says de Lang, thereby highlighting an aspect that is important for his area of responsibility.
“Te HPF system is comparatively compact. Tis refers to the minimum length from the connection to the starting point of the pipe bend. Since we always implement designs that only permit little space and play, the HPF system is a very helpful product for us. Our fitters and assembly workers appreciate the fact that, unlike other mechanical flange systems, HPF inserts can be easily replaced if damaged during installation and pipe forming can be done on site. Also, bolts and screws can be easily tightened even under difficult conditions. All in all, high performance flanges have proved themselves to be tear-proof and vibration resistant. Safety plays a very important role for us,” says de Lang. Returning to the welding technology mentioned earlier, this traditional technology is comparatively time- consuming, because heavy wall pipes connectors require several layers of welding and must be made by qualified welders. All welds have to have an X-ray inspection and the pipe systems must be flushed through. Tese intermediate steps can be omitted when using the HPF system, which is also more environmentally friendly. Te flanging process does not cause noxious gases, thus eliminating explosion and fire hazards.
Hans de Lang at Royal IHC (left) and Ramiz Selimbasic at Parker Hannifin (right) are convinced of the advantages of HPF
Parker’s HPF components are supplied
as standard with a highly corrosion-resistant surface – an aspect that plays an important role across all industries. Tis surface finish is also free of CrVI, which is suspected of causing cancer. “Parker always provides a comprehensive
service package from design, production and on-site installation that the end customer can take advantage of. But this is not binding on what we can provide. For example, we can also execute pipe end forming ourselves on site with an assembly machine, which makes us even more flexible”, says de Lang. Explaining how the Parker Parflare HPF 120/170 functions, he says: “Te machine is used for pipe end forming in the axial pressing process for the HPF flange system. It is a workshop device for single piece production. Te flanging contour is achieved by axial pressing of the tool into the pipe end.
Te contour of the flange is designed for use with HPF inserts.” Te tool’s feed-in movement is generated
by a hydraulic cylinder driven by a unit in the machine housing. Te return stroke is also executed as electro-hydraulic. Te pipes are clamped in clamping jaw sets that are clamped over a cone. Te machine is equipped with an adjustable stop end for the pipe end. Tis therefore produces flange contours of uniform quality. Te separated clamping jaws and the pipe stop end enable easy handling and uniform results. Te separation of the clamping jaws and the removal of the pipes is facilitated by a bracket. Another practical feature of the Parflare HPF 120/170 is that it can be moved quickly to any location on rollers or by fork-lift truck or crane. In summary, the high-performance flanges can be assembled easily, quickly and, above all, safely.
Royal IHC is a supplier of innovative and efficient equipment, vessels and services for the offshore, dredging and wet mining markets
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www.engineerlive.com
Ramiz Selimbasic is with Parker.
www.parker.com
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