What Are The Factors That Affect The Life Of The Elevator Steel Wire Rope?
1, the production process factors
The Elevator Steel Wire Rope is made of a variety of wire twist made of a finished product, wire and twist the quality of the process determines the quality of the rope. The wire is usually hot rolled from the high-quality steel ingot into a smaller diameter disc round, and then after repeated cold drawing made of different diameter wire. If the quality of wire and twisting process can not be guaranteed, it is necessary to reduce the service life of Elevator Steel Wire Rope. Therefore, the Elevator Steel Wire Rope in the production process must first ensure that the quality of wire and twisting process, so basically to ensure the quality of Elevator Steel Wire Rope to extend the service life of Elevator Steel Wire Rope. However, in the process of the sale of Elevator Steel Wire Rope, in addition to the new arrival of the Elevator Steel Wire Rope in addition to the corresponding performance testing, but also the necessary appearance quality and twist quality inspection, for the emergence of riding, jumping wire, kink, Ma core exposed, shares Loose or other surface quality defects or twisting quality defects of the Elevator Steel Wire Rope, the user has the right to return according to the degree of defects, because these defects will greatly affect the use of Elevator Steel Wire Rope cycle and the use of security performance. In the actual work, by the product quality caused by broken rope accident is also common.
2, the use of factors
In the use of various damage caused by the rope is to reduce the life of the main factors. One of the mechanical damage is one of the main damage Elevator Steel Wire Rope, mainly for wear, broken wire, overload, corrosion and so on.
Wear is divided into external wear and internal wear.
The external wear is mainly caused by the use of Elevator Steel Wire Rope in the course of its use, and its outer surface and the surface of the rope floor and other objects caused by contact, so the actual work should be on the regular rope down, to avoid unilateral wear, as much as possible to make the Elevator Steel Wire Rope Week wear. Wear to make the Elevator Steel Wire Rope narrower, breaking load reduced.
The internal wear is mainly caused by the Elevator Steel Wire Rope through the reel or pulley when the load is mainly pressed on the side of the Elevator Steel Wire Rope, and because of the bending of the Elevator Steel Wire Rope, the wire between the wire between the various forces generated between the wire and silk, The force between the shares increased, so that the internal wear and tear of the Elevator Steel Wire Rope, when the frequent work of the concentration of force, so that internal broken wire. Wear greatly reduces the service life of the Elevator Steel Wire Rope. Through the use of Elevator Steel Wire Rope in the performance test of monofilament found that the lifting rope for the main factors affecting the wear and tear.
4, broken wire
Wire breakage is divided into the manufacture of broken wire and the use of broken wire, so "coal mine safety regulations" provides the Elevator Steel Wire Rope in the suspension before and in the use of monofilament performance testing. In use, because the rope repeated in the sheave or reel around the winding, numerous bending, easy to make steel wire fatigue, toughness decreased, and ultimately lead to broken wire. The non-product quality factors caused by the broken rope accidents and the promotion of the work there are different degrees of relationship. The broken wire caused by fatigue generally appears on the outer side of the wire with the most severe curvature of the strands. Bending fatigue broken wire will increase with the increase of load and bend angle increase.
Through the analysis of the fracture characteristics of the Elevator Steel Wire Rope, it is found that the main result of the broken wire is the flattening of the fracture. Broken wire in addition to fatigue broken wire also includes many types, there are wear broken wire, rust broken wire, pull off broken wire and so on. Different broken wire fracture characteristics are different.