Experimental investigations on electrical discharge diamond peripheral surface grinding (EDDPSG) of hybrid metal matrix composite
Experimental investigations on electrical discharge diamond peripheral surface grinding (EDDPSG) of hybrid metal matrix composite
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DOI：
10.1016/j.jmapro.2017.04.004
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发表时间：
2017-06
影响因子：
6.2
通讯作者：
R. Yadav;V. Yadava
中科院分区：
文献类型：
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作者：
R. Yadav;V. Yadava
本文介绍了一种电火花金刚石外圆磨削实验装置，它是电火花金刚石磨削工艺的一种结构。使用开发的实验装置，在加工具有挑战性的材料Al/SiCp/B4 Cp混合金属基复合材料的过程中，实验研究了加工性能特征。考虑间隙电流、接通时间、断开时间、磨粒数、砂轮速度和工作台速度作为输入工艺参数。实验研究了输入工艺参数对材料去除率和表面粗糙度的影响。利用扫描电镜对已加工表面的表面织构和重铸层进行了研究。在一定的脉冲关断时间内，金刚石砂轮的去毛刺效果较好。特定的磨粒尺寸适用于更好地去除热侵蚀表面劣化，并使磨削痕迹最小化。在加工表面上存在浅的弹坑和可忽略的重铸层厚度证实了开发的EDDPSG实验系统的潜在能力和适用性。
In this paper, authors have endeavored to develop an experimental setup of Electrical Discharge Diamond Peripheral Surface Grinding which is a configuration of Electrical Discharge Diamond Grinding process. The machining performance characteristics were experimentally studied using the developed experimental setup during machining of a challenging material Al/SiCp/B4Cp hybrid metal matrix composite. Gap current, on-time, off-time, abrasive grit number, speed of wheel, and table speed were input process parameters considered. The influence of input process parameters were experimentally investigated on material removal rate and surface roughness using one parameter at a time approach. Scanning Electron Microscopy was used to study the surface texture and recast layers on machined surface. The surface finish is better achieved at a critical pulse off-time with appropriate declogging of diamond wheel. A specific abrasive grit size is suitable for better removal of thermal infested surface deteriorations with minimal marks of grinding traces. The presence of shallow craters and negligible thickness of recast layers on machined surface substantiate the potential capability and applicability of developed EDDPSG experimental system.