矿井提升机用提升钢丝绳的微动磨损行为研究

Fretting Wear Behavior of Hoisting Rope in Mining Hoister

以 6× 19点接触式提升钢丝绳为研究对象 ,将钢丝绳中钢丝的微动损伤过程进行实验室模型化 ,设计制造了钢丝微动磨损试验机 ,并对钢丝试样的微动磨损行为进行了实验研究 ,考察了载荷、循环次数和振幅等对钢丝试样磨损深度的影响 .结果表明 ,钢丝试样的微动磨损深度随载荷、循环次数和振幅的增大而增大 ,在不同磨损工况下钢丝试样磨损率不同 .对钢丝试样的磨损表面形貌进行观察分析发现 ,在微动磨损过程中磨损机制随着微动试验条件而变化 。

The 6×19 point contact rope was taken as an example to investigate the fretting wear behavior of steel wires in hoisting rope of a mining hoister. A fretting wear model for wire rope was established and a fretting wear test rig was designed and set up in laboratory. A series of tests were performed on the fretting wear test rig by taking the wear depth of steel wire as a characterization parameter describing the fretting wear in relation to the contact load, reciprocating cycle and amplitude. The worn surface morphologies of steel wire specimens were observed by a scanning electron microscopy so as to analyze the wear mechanism. It is found that the wear depth of upper and lower specimens increases non linearly with the change of contact load, reciprocating cycle and amplitude. The wear rates of the specimens vary with different testing conditions. The fretting wear of the specimens is characterized by adhesion wear, abrasive wear, oxidation and fatigue. Different wear mechanisms of fretting states were observed under different testing conditions.