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钢丝绳中钢丝的锈蚀、磨损或断裂是造成矿井用钢丝绳失效的主要形式.以6×19点接触式提升钢丝绳为研究对象,在自制的微动摩擦磨损试验机上开展钢丝在腐蚀介质环境下的微动磨损试验研究.考察钢丝在模拟矿井淋水腐蚀介质中的微动运行特性,通过磨痕测量微动磨损量,采用光学显微镜、扫描电镜和能谱仪对钢丝的微动损伤机理进行分析.结果表明:腐蚀介质影响钢丝的微动运行区域,在干摩擦和中性腐蚀介质下运行于混合区,而在酸性和碱性腐蚀介质下运行于滑移区;腐蚀介质明显降低钢丝的摩擦系数,其中酸性介质下的摩擦系数最小,约为0.36;腐蚀与磨损的交互作用显著加速了材料的流失,酸性腐蚀介质下钢丝的磨痕深度最大;钢丝在干摩擦条件下的损伤机制以材料的塑性变形、粘附涂抹和摩擦氧化为主,而在腐蚀介质环境下的损伤机制转变为磨粒磨损和化学腐蚀.
Corrosion, abrasion or rupture of the steel wire in the steel wire rope is the main form of failure of the steel wire rope used in the mine.With 6 × 19 points contact-type lifting wire rope as the research object, the micro-friction and wear testing machine In this paper, the fretting behavior of steel wire in simulated water and corrosion of mine pit is investigated, the fretting wear is measured by wear scar, and the mechanism of fretting damage of steel wire is analyzed by optical microscope, scanning electron microscope and energy dispersive spectrometer. The results show that corrosive medium affects the fretting zone of steel wire and runs in the mixed zone under dry friction and neutral corrosive media and slips in acidic and basic corrosive media. Corrosion medium significantly reduces the friction coefficient , Of which the friction coefficient of acid medium is the smallest, about 0.36; the interaction between corrosion and wear accelerated the loss of material significantly, the depth of wear scar of steel wire under acid corrosive medium was the highest; the damage mechanism of steel wire under dry friction condition was Plastic deformation, adhesion and friction oxidation based, and in the corrosive media environment damage mechanism into abrasive wear and chemical corrosion.