轧机轧辊的显微组织特性和力学试验

M. Solmaz, H. Kotan, Sabriye Açıkgöz, M. Bağcı
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引用次数: 0

摘要

本研究利用扫描电镜(SEM)和光学显微镜(OM)对轧辊进行了从外层到内层的表面和深层微观组织表征,描绘了基体组织、碳化物相和石墨组织。利用x射线衍射(XRD)技术确定了微观结构中存在的碳化物相类型。从适当的区域切割样品,计算内层和外层的密度。在机械试验范围内,对从轧机辊的适当区域切割线材侵蚀制备的样品进行了硬度试验、压缩和拉伸试验以及冲击试验。利用扫描电镜对冲击试验获得的断口进行了分析,并对材料的断裂特征进行了解释。最后,在室温和高温(150℃)下进行了磨损试验,测定了不同温度下轧辊表面在使用过程中的耐磨性。
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Microstructural Characterization and Mechanical Tests of Mill Rolls
In this study, using scanning electron microscope (SEM) and optical microscope (OM), microstructural characterizations of both the surfaces and deep microstructural characterization of the rolls were carried out from the outer layer to the inner layer and the matrix structure, carbide phases and graphite structures were depicted. The types of carbide phases present in the microstructure were determined using the X-ray diffraction (XRD) technique. The densities of the inner layer and the outer layer were calculated with the samples cut from the appropriate regions. Within the scope of mechanical tests, hardness test, compression and tensile tests and impact tests were applied to the samples prepared by cutting wire erosion from the appropriate area of ​​the mill roll. The fracture surfaces obtained as a result of the impact test were analyzed by SEM and the fracture characteristics of the material were interpreted. Finally, wear tests were carried out at both room temperature and high temperature (150 ºC), and the wear resistance of the roll surface during use was determined for different temperatures.
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