自动取款机摩擦学系统在沙尘环境中的磨损特性研究

Wear Characteristics of ATM Tribosystem in Sand Dust Environment

模拟塔克拉玛干沙漠的沙尘环境,对(ATM)自动取款机摩擦学系统进行了磨损试验,分析了聚酰亚胺(P I)和聚萘二甲酸乙二酯(PEN)高聚物薄带在3种载荷以及有无纸币基体情况下的沙尘磨损性能和机理.结果表明:P I薄带的抗沙尘磨损能力较PEN薄带强;纸币基体可以改善PEN薄带的抗沙尘磨损能力;P I薄带的磨损机理表现为剧烈的刨削磨损,PEN薄带则表现为微犁沟和疲劳剥落.

Wear performance of ATM （Auto Teller Machine） tribosystem was studied in simulated sand dust environment with nature sand from TAKEMANKAN desert and sand deposition flux 960 kg/m^2. day. Abrasive wear characteristics of polymer tape of PEN （polyethylene-2, 6-naphthalenedicarboxylate） and PI （polyimide） due to sand particles was investigated at loads of 0. 6, 1 and 1.5N with/without bill substrate. Experimental results show that PI tape exhibits higher wear resistance to the sand particles than PEN does and that abrasive wear performance of PEN tape with bill substrate is improved obviously. The wear mechanism of polymer tapes is severe chipping by sand particles for PEN, and micro-ploughing and fatigue flaking for PI.