#cable seals

Description of the use of wire rope

Steel wire made of high quality carbon steel, after repeated cold drawing and heat treatment can achieve high strength. Wet or open environment and other workplace can be galvanized steel wire twisted into the wire rope to enhance the anti-rust performance.

Steel wire rope in the industrial countries are standard products, according to the need to choose its diameter, the number of strands, the number of wires per strand, tensile strength and adequate safety factor, its specifications can be found in the relevant manual. In addition to the wear of the outer wire, the wire rope is gradually broken by the repeated bending of the pulley and the reel, so the ratio of the pulley or the diameter of the reel to the wire rope is an important factor in determining the life of the wire rope. Large ratio, steel bending stress is small, long life, but the body is huge. Must be based on the use of occasions to determine the appropriate ratio. The wear and tear of the surface layer of the wire rope shall be scrapped when the number of threads exceeds the specified value.

Wire rope is mainly used in the lifting, transport and other needs of high-strength rope in the transport.

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Classification / wire rope editing

Wire ropes can be sorted by shape, level, status, etc.

 shape

1. Round wire rope

2. Woven wire rope

3. Flat wire rope

In accordance with the rope wire material classification:

1. Carbon steel wire rope, high-quality carbon structural steel wire as raw materials twisted from.

2. Stainless steel wire rope, made of stainless steel wire as raw material twist,

According to the surface of the wire rope classification:

1. Phosphor coated steel wire rope patented technology

       The phosphating film can make the surface of the steel wire more wearable and improve its anti-corrosion ability. The phosphating film porous structure can increase the storage capacity of the grease on the surface of the rope and reduce the friction factor to promote the sliding and delay The occurrence of micro-damage on the surface of the wire, inhibit the initiation of fatigue microcracks, thus greatly extending the service life of wire rope [1].

     Will be made of wire rope phosphating treatment, the priority of the use of manganese or zinc-manganese phosphate, steel wire is not carried out after any drawing, direct use of phosphating steel wire twist wire rope, the phosphate coating to make the surface more wear , The use of phosphating wire rope life is 2-3 times the smooth steel wire rope, wire rope fatigue performance significantly improved [2].

2. Galvanized steel wire rope, galvanized steel wire twisted, including hot-dip galvanized and electro-galvanized two methods, the thicker the galvanized layer, the better the anti-corrosion effect.

3. Apply a wire rope to a layer of plastic, including polyethylene, polypropylene and polyurethane, in the outer layer of wire rope or strand.

Container seal is a lock of the container, but only once, after opening the bad, can not be used again. Above a title, is unique, if the customer gets the container seal on the number with the bill of lading on the same, on behalf of the container did not open, the goods intact. It is not a mark, a mark refers to the packaging of goods printed mark, not the same thing.

The key is made of metal, the plastic body is made of plastic, and the lock body is the spring structure. The surface of the lock body is made of hot, laser typing and serial number. The bar code and color can be customized according to the requirements of the user. 8, the length can be produced according to user requirements, pull up to F ≥ 250KG.

Security seals are mechanisms used to seal shipping containers in a manner that provides tamper evidence and several amount of security. Such seals will help you to detect theft or contamination, either accidental or deliberate. Security seals are usually employed to secure truck trailers, vessel containers, chemical drums, airline duty-free trolleys and utility meters. Typically they are really considered an affordable way of providing tamper evidence of intrusion into sensitive spaces.

Security seals can be split into two main groups: single use and reusable. Single use seals are typically manufactured from plastic or metal, and also the used material and production technology is key with their security level. Reusable seals usually are electronic or mechanical as opposed to just manufactured from plastic, and if purely plastic, one part is reusable. Electronic and mechanical seals are typically used for the transportation industry, with seal fixed to the back of trucks, trailers and shipping containers. A reusable mechanical or electronic seal could be fitted for the rear or loading doors, extending a cable from itself through fixing points in the doors, and whenever sealed creating a unique number which is logged. Once the door is next opened this number changes, thus it provides tamper evidence to the load.

The requirements for specific security degree of seals are defined during the ISO 17712. The seals that are part of the High security level and Security level are called "barrier seals". They are created from different metals or metal alloys, meaning that they might require special tools to generally be opened, for example bolt cutters or pliers. Cable seals and bolt seals also fall into this category. Made to deter opportunistic theft of high value goods, in addition, they is sometimes branded and numbered to further improve tamper resistance and provide excellent security for containers. The seals that are within the Indicative level regarding ISO 17712 are made from plastic or thin metal.

Cable seals permit more versatile application, while they have variable entire locking mechanism limited only through the cable length. Typical applications include sealing trucks and railway cars transporting valuable commodities. An inside locking mechanism prevents the cable from being retracted. Most cable seals are considered security or high security level as to ISO 17712.

All ISO 17712 compliant seals are numbered on seal body and head, to stop substitution of either part. This is usually done using laser marking, which should not be rubbed off.

Roxtec are the world leading manufacturer of cable and pipe sealing transits to protect against water ingress, gas migration and fire spread. The following article by Gavin Cornall (Divisional Manager Construction, Power & Process at Roxtec UK & Ireland) discusses cable sealing applications during running water or “flood” conditions.

Firstly, running water presents a major sealing issue for the installation of mastic type seals, curing and drying is almost impossible. This can place “stress and strain” on work programme completion times, especially approaching handover phase.