Combined study of wear and abrasive fragmentation using Steel Wheel Abrasion Test
Combined study of wear and abrasive fragmentation using Steel Wheel Abrasion Test
复制标题
使用钢轮磨损试验对磨损和磨料破碎进行联合研究
DOI：
10.1016/j.wear.2010.12.044
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发表时间：
2011
期刊：
影响因子：
5
通讯作者：
P. Radziszewski
中科院分区：
文献类型：
--
作者：
Poorya Hosseini;P. Radziszewski
大量的磨料磨损问题，特别是那些在恶劣的环境中涉及到显着的磨料破碎。一个值得注意的情况是矿石破碎和介质磨损在粉碎设备，如翻滚米尔斯，其中磨料破碎确实是该过程的目标。虽然有单独用于材料磨损或断裂表征的标准测试方法，但需要标准测试方法，使我们能够对磨损和断裂进行综合研究，以创建类似于实际应用的环境。钢轮磨损试验是候选者之一，为我们提供了这样一个环境，研究磨损，磨料破碎和它们之间的相互关系，在一个单一的设备，因为它的高应力磨损的性质。此外，需要更精确的工具来描述磨料破碎和表面磨损的数量和质量。在这项研究中，破碎的特点是通过粒度分布的磨料之前和之后的测试，并估计在磨料的粒度分布的基础上创建的表面积。在试验后使用电磁铁从使用过的磨料中收集磨损颗粒，用激光散射仪精确分析，并使用气体吸附法计算其表面积密度。磨屑沿着的表征和磨粒破碎的精确量化为研究磨粒磨损提供了有力的工具。从钢轮磨损试验中提取的实验结果表明，新引入的工具能够成功地预测磨料破碎和磨损之间有很强的相关性。此外，磨损和破损的联合研究使我们能够对一些过去不合理的异常磨损趋势给出解释。
Scores of abrasive wear problems particularly those in the harsh environments involve remarkable breakage of the abrasive. One notable case is the ore breakage and the media wear in the comminution devices such as tumbling mills, where the abrasive breakage is indeed the objective of the process. While there are standard test methods for wear or breakage characterization of the materials individually, there is a need for standard test methods enabling us to conduct a combined study of the wear and breakage to create an environment similar to the actual applications. Steel Wheel Abrasion Test is one of the candidates providing us with such an environment to study wear, abrasive fragmentation and their inter-relation in one single apparatus because of its high-stress nature of abrasion. Moreover, there is a need for more precise tools of describing the quantity and quality of the abrasive breakage, and surface wear. In this research, breakage has been characterized through size distribution of the abrasive before and after the test, and estimation of the created surface area in abrasive based on the size distribution. Wear particles are collected from the used abrasive after the test using an electromagnet, precisely analyzed with laser scattering machine and their surface area density is calculated using the gas adsorption method. Characterization of the wear debris along with precise quantifying of the abrasive fragmentation provided powerful tools in studying the abrasive wear. Experimental results extracted from the Steel Wheel Abrasion Test indicate a strong correlation between the abrasive breakage and the wear which newly introduced tools were successfully capable of predicting. Additionally, the combined study of the wear and breakage enabled us to give explanation for some anomalous wear trends which were not justifiable in the past.