| 电火花毛化加工对轧辊表面磨损性能的影响 |
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| 引用本文： | 徐丽红,丁卫华.电火花毛化加工对轧辊表面磨损性能的影响[J].机械设计与研究,2011,27(4). |
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| 作者姓名： | 徐丽红 丁卫华 |
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| 作者单位： | 1. 上海电子信息职业技术学院,上海,201411
2. 上海空间推进研究所,上海,200233 |
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| 摘 要： | 用分形几何理论来表征电火花毛化表面微观形貌,通过常规的表面粗糙度指标Ra,建立主要放电参数与毛化表面分形参数之间关系的数学模型,利用分形参数研究电火花毛化加工参数对表面形貌的影响规律。在摩擦磨损分形预测模型的基础上,分析了表面形貌分形参数对磨损率的影响。确定主要的放电加工参数脉冲峰值电流和脉冲宽度所导致的加工表面形貌变化对最终的磨损表面的磨损性能的影响,结果表明,对于具体的加工电极及工件材料,可以由最佳分形维数来确定最佳的放电脉冲宽度和峰值电流。计算结果对实际加工有重要指导作用。
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| 关 键 词： | 电火花毛化 分形几何 摩擦磨损 表面形貌 |
Effect of Electrical Discharge Texturing Fractal on the Surface Properties of the Roll with Fractal Theory |
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| XU Li-hong,DING Wei-hua.Effect of Electrical Discharge Texturing Fractal on the Surface Properties of the Roll with Fractal Theory[J].Machine Design and Research,2011,27(4). |
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| Authors: | XU Li-hong DING Wei-hua |
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| Affiliation: | XU Li-hong1,DING Wei-hua2(1.Shanghai Technical Institute of Electronics & Information Shanghai 201411,China,2.Shanghai Space Propulsion Institute Shanghai 200233,China) |
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| Abstract: | Surface topography electrical discharge textured roll was characterized by fractal geometry method,the relation between main electrical discharge machining parameters and fractal parameters of the surface was proposed though conventional roughness index Ra.The variation law of the surface topography and processing parameters was analyzed with fractal parameters.On the base of the fractal geometry model for wear prediction,how fractal dimension affecting nominal wear rate was studied.Effects of main discharg... |
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| Keywords: | electrical discharge texturing fractal geometry friction and wear surface topography |
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