Some characteristics of the rolls, such as strength vs. Thermal shock, tensile strength and contact fatigue strength, influence spalling. Thus, strength was investigated as a hardness parameter.

辊子的一些特性，例如：强度、耐热性、抗拉强度、接触疲劳强度都和剥落有关。因此，强度可作为硬度的参数来研究。

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The test results showed that HVOF coating endured 15 times thermal shock was perfect without any defects, such as crack and spalling.

试验结果表明，HVOF涂层经过15次整体热震试验后，涂层均保持完好无损，未出现裂纹及剥落等任何缺陷；

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In the mean time, rolling contact stress, braking heat energy, thermal crack and mechanical action are key causes of tread spalling.

其中滚动接触剥离和制动剥离是两种主要剥离类型，滚动接触应力、制动热作用、热裂纹和机械作用是引起剥离的主要原因。

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