Rope three characteristics

Mainly in the characteristics of  Wire rope  breaking force, resistance to torsional bending toughness and corrosion resistance for harsh operating environment, is composed of steel wire rope characteristics of the decision.  wire rope  also has high reliability under the specified conditions of use, the prescribed lifetime, when the specified function is executed, rarely occur suddenly without aura risk of breaking the entire rope, exhibit better security. Safety engineering staff implement the safety management of the crane, you should be aware of wire rope, wire rope and the performance and use of the applicable conditions have a basic understanding.
1. Rope strength
The tensile strength of the wire rope determined rope breaking force is the most important performance indicators, and the tensile strength of the wire drawing by drawing obtained by this special manufacturing process.
High tensile strength steel to withstand dynamic load can be increased, and anti-extrusion capability, but the attendant reduction in toughness increased brittleness, and repeated bending in heavy use conditions likely to break. Therefore, the higher the tensile strength of steel wire rope is not possible, but must be considered. Through experiments that, in 1550MPa ~ 850MPa tensile strength between the wire rope, its tensile, compression, abrasion resistance, flexibility and integrated features better, is the work of the crane rope institutional priorities chosen.
2.  Wire rope   toughness
Toughness is an important parameter to ensure the reliability of wire, the wire is based on a single test result of the decision. The single wire twist 360 degrees and 180 degrees successively repeated bending uninterrupted, until it breaks, the wire does not occur according to the test frequency for ductile fracture resistance classification withstand more times, the better the toughness of steel wire, class also higher. In accordance with national standards, rope toughness divided into special, Ⅰ, Ⅱ three levels.
Super toughness best for important occasions, such as passenger elevator, mine hoist, etc. manned; Ⅰ grade toughness slightly lower than the premium, but the reliability is good, generally as the various working bodies of the crane with a rope; Ⅱ grade toughness low, but the cost is also low, commonly used in the secondary, replacing frequent occasions, such as the bundled rope, slings, etc..
3. Corrosion resistance of the  wire rope 
Use of environmental conditions under the wire, the wire is subjected to surface treatment in accordance with, the surface can be divided into smooth galvanized wire rope, and two kinds. Smooth surface of the wire rope without any treatment, non-corrosive environment for routine crane with a rope. Zinc plated copper wire rope according to the corrosion resistance of the coating is divided into three grades, Grade A for severe corrosive conditions, for general corrosion conditions B and C for less corrosive conditions.