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镍 718 零件特性的 RUM 工艺参数优化及其影响的系统调查。

A systematic survey of RUM process parameter optimization and their influence on part characteristics of nickel 718.

机构信息

GD, Goenka University, Gurugram, Haryana, India.

Manav Rachna International Institute of Research and Studies (A Deemed to be University), Faridabad, Haryana, India.

出版信息

Sci Rep. 2023 Jan 31;13(1):1716. doi: 10.1038/s41598-023-28674-1.

DOI:10.1038/s41598-023-28674-1
PMID:36720932
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9889715/
Abstract

This research is focused on the drilling of Nickel based super alloy with diamond metal core drill and identified the significant parameters of rotary ultrasonic machining that optimise the machining rate (MR) and surface quality. Four general parameters: workpiece material, workpiece thickness, tool material, and tool size; and four RUM parameters: tool rotational, feed rate, ultrasonic power rating, and abrasive grit size of the tool were tested against and surface quality of the cut. The results indicated that the maximum value of MR of 0.8931mm/sec is acquired at higher level of tool rotation, feed rate, ultrasonic power and moderate level of abrasive grit size of diamond. The minimum surface roughness (R) 0.554 µm is observed at higher level of rotational rotation, Moderate value of feed rate, ultrasonic power and diamond abrasive grit size. In addition, for single-objective and multi-objective functions, the particle swarm optimization (PSO) approach is used to find the optimum values for process parameters. Furthermore, a scanning electron microscope is also utilized to check the machined surface after RUM. It is concluded that microcracks are observed on the machined surface.

摘要

本研究专注于使用金刚石金属芯钻头钻削镍基高温合金，并确定了旋转超声加工的显著参数，以优化加工速率 (MR) 和表面质量。对四个一般参数（工件材料、工件厚度、工具材料和工具尺寸）和四个 RUM 参数（工具旋转、进给率、超声功率额定值和工具的磨料粒度）进行了测试，并对切割表面的质量进行了测试。结果表明，在较高的工具旋转、进给率、超声功率和中等金刚石磨料粒度水平下，获得了最高的 MR 值 0.8931mm/sec。在较高的旋转速度、中等的进给率、超声功率和金刚石磨料粒度水平下，观察到最低的表面粗糙度 (R) 0.554µm。此外，对于单目标和多目标函数，使用粒子群优化 (PSO) 方法来找到工艺参数的最优值。此外，还使用扫描电子显微镜检查 RUM 后的加工表面。结果表明，在加工表面观察到微裂纹。

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