高温腐蚀工况下滑动轴承摩擦磨损试验机设计

Sliding Bearing Material Testing Machine under High Temperature Corrosion Conditions

滑动轴承广泛应用于镀锌线沉没辊支撑中,包含轴套和衬套两个部分。轴套和衬套都处于高温、腐蚀以及受载的工况中。所以镀锌线沉没辊滑动轴承很容易因受到腐蚀磨损而失效,滑动轴承副材料的使用寿命决定了整个镀锌线的运行时间。为了保证镀锌生产线的长期运行,目前最理想的方法是选择合适的滑动轴承副材料进行配对。为了筛选出具有良好匹配性能的材料,设计开发了模拟高温锌液环境下滑动轴承副材料的摩擦磨损试验机。试验机分为驱动系统、加载系统和加热系统三部分。驱动系统驱动轴套试样旋转;加载系统驱动衬套式样对轴套试样垂直施加载荷;井式加热炉加热锌锭至480℃模拟锌池环境;解决了驱动系统和加载系统的对中和绝缘问题。在试验机加工前,借助ANSYS分析了试验机在试验条件下的稳定性,确保传感器采集的信号具有较高的参考值。

Sliding bearings are widely used in submerged rolls of strip galvanizing line immersed in zinc bath. Submerged roller bearing pair materials include sleeves and bushings. These two parts are in high temperature,load and corrosive working environment. They are prone to wear and failure. The service life of bearing pair materials determines the operation time of the whole galvanizing line. In order to ensure long-term operation of galvanizing line,the most ideal method at present is to select suitable sleeve and bushing material matching pairs. To screen sleeve and bushing materials with good matching performance,a friction and wear tester simulating sleeve and bushing materials in high temperature molten zinc environment was designed and developed. The test machine is divided into three parts: driving system,loading system and heating system. The driving system drives the sample rotation of the sleeve;the loading system drives the bushing pattern to load the sample of the sleeve;the well heating furnace heats the zinc ingot to 480℃ to simulate the zinc pool environment;the vertical loading of bearing pattern and sleeve pattern,the alignment and insulation of the driving system and the loading system are comprehensively considered and solved. The stability of the test machine under test conditions is analyzed to ensure that the signal collected by the sensor has a high reference value.