How is the internal metal armoring layer designed? How is flexibility maintained while ensuring high strength?
OFSCN® High-Strength Patch Cords achieve their anti-rodent protection and high strength through a meticulously designed internal metal armoring layer, which also ensures flexibility.
The internal metal armoring typically consists of seamless stainless steel tubes and, in some variants, stranded steel wire rope structures. For instance, some designs incorporate a 0.9mm or 1.0mm seamless stainless steel tube directly housing the optical fiber. Other designs integrate a stranded structure made of 0.45mm or 0.6mm stainless or galvanized steel wires, further encased by a seamless steel tube. This multi-layered metallic construction provides robust protection against mechanical stresses, crushing, and rodent bites.
Flexibility is maintained by:
- Small Diameter Seamless Tubes: The use of small-diameter (e.g., 0.9mm, 1.0mm) seamless steel tubes allows for a high degree of bending without compromising the structural integrity or the fiber inside.
- Stranded Steel Wire Structure: When steel wire rope is utilized, its stranded (helical) arrangement inherently provides flexibility, similar to how a multi-strand cable is more flexible than a solid rod of the same diameter. This structure allows the cable to bend and flex without the entire assembly becoming rigid.
Here are some examples of OFSCN® High-Strength Patch Cords that utilize these principles:
1 Like