An Overview of the Hardness Differential Required for Abrasion
An Overview of the Hardness Differential Required for Abrasion
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DOI：
10.1115/1.4001896
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发表时间：
2010-07-01
影响因子：
2.5
通讯作者：
Pintaude, Giuseppe
中科院分区：
文献类型：
--
作者：
Pintaude, Giuseppe
本文概述了磨损所需的硬度差。根据经验，如果要产生划痕，磨料必须至少比磨损表面硬1.2倍。该值已在理论上使用滑移线场模型确定，该模型假设刚性塑性机械行为，该假设对于大多数磨料颗粒是不充分的。两种方法使用弹塑性模型和三个摩擦学对磨损材料硬度的磨料硬度相似的比率进行了测试，以获得磨损所需的硬度差的理解。分析表明，当材料的力学行为相似时，磨料性能与磨损表面性能的比值不随所用模型而改变。然而，当材料的行为是非常不同的情况下，通常是在磨料加工的比率变化很大，这取决于所使用的模型，表明有必要的模型来描述所需的磨损的硬度差。[DOI 10.1115/1.4001896]
This paper presents an overview of the hardness differential required for abrasion. Empirically, the abrasive must be at least 1.2 times harder than the worn surface if it is to produce a scratch. This value has been determined theoretically using slip-line field modeling, which assumes rigid-plastic mechanical behavior, an assumption that is inadequate for most abrasive particles. Two approaches using elastic-plastic models and three tribological pairs with similar ratios of abrasive hardness to worn material hardness were tested to gain an understanding of the hardness differential required for abrasion. The analysis showed that the ratios of the property of the abrasive to the property of the worn surface did not change with the model used when the mechanical behavior of the materials was similar. However, when the behavior of the materials was very dissimilar-as is often the case in abrasive processes-the ratios varied greatly depending on the model used, showing that there is a need for models to describe the hardness differential required for abrasion. [DOI: 10.1115/1.4001896]