Cutting the friction to serve our customers
To meet our customer’s request to reduce the force necessary to “pull” cables by at least 20%, Nexans assessed modifying the structure of the cable, increasing the sheath hardness, or using some sort of lubrication. The third solution allowed us to reduce pulling force by 23%!
Slip and slide
Without compromising flexibility, cable characteristics, outside diameter or weight, we added a fatty acid amid group to the outer jacket compounds during extrusion. This additive creates a very slippery surface, making these cables easier to move and slide into place.
Beating the heat
In Vietnamese shipyards, the frictional resistance of cables has been known to increase with high ambient temperatures. This could be resolved by increasing the hardness of the sheath, but stiffness creates other installation problems. After reviewing alternatives we found that a slip additive was the best way to reduce pulling force without altering cable performance. We then checked economic feasibility and ran internal bench tests to confirm validity. Finally, we did a tour of shipyards to showcase the new easy-pull cable to all potential customers.
Making a difference for our customers
According to geography, offshore/shipboard cables are divided into various standards, such as NEK 606 (Norwegian), BS 6883 (British), IEEE 45 (American) and IEC 60092 (International), although all are basically international and used worldwide. Our major competitors and most cable makers conform to NEK 606; however, there is very little difference in this type of halogen-free mud-resistant cable. By responding to the needs of shipbuilders in the Vietnamese market, we have created a differentiation, and put our new cable on the map.
"Every frictional body has a resistance of friction equal to one quarter of its weight."
Leonardo da Vinci