基于信噪比和灰色关联分析的电火花喷爆加工工艺参数优化*

doi:10.16731/j.cnki.1671-3133.2024.07.002

现代制造工程 ›› 2024, Vol. 526 ›› Issue (7): 9-16.doi: 10.16731/j.cnki.1671-3133.2024.07.002

基于信噪比和灰色关联分析的电火花喷爆加工工艺参数优化^*

刘宇, 韩钧, 曲嘉伟, 张诗奇, 陈海静

大连交通大学机械工程学院,大连 116028

收稿日期:2023-10-07 出版日期:2024-07-18 发布日期:2024-07-30
作者简介:刘宇,博士,教授,博士生导师,主要研究方向为难加工材料高效精密加工、微细特种加工、CAD/CAM/CAE。E-mail:liuyu_ly12@126.com
基金资助:
*国家自然科学基金项目(51875074)

Optimization of ejecting-explosion EDM parameters on SiCp/Al using signal-to-noise ratio and grey relational analysis

LIU Yu, HAN Jun, QU Jiawei, ZHANG Shiqi, CHEN Haijing

College of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China

Received:2023-10-07 Online:2024-07-18 Published:2024-07-30

摘要/Abstract

摘要： 随着SiCp/Al复合材料应用领域日益广泛,对其加工效率和表面质量提出了更高的要求。针对上述问题,设计L₂₅(5⁶)的正交试验,使用一种新型高效的电火花加工方式——电火花喷爆加工,对20 %的SiCp/Al复合材料进行工艺试验。主要优化指标为材料蚀除率(MRR)、电极损耗率(TWR)和表面粗糙度(Ra),工艺参数为高压波电流、高压波电压、低压波电流、低压波电压、脉宽和相位差。根据正交试验结果,采用信噪比分析法,研究得到各工艺参数对不同优化指标的影响以及单目标最优加工参数组合。基于灰色关联度分析法,以层次分析法确定各优化指标权重,分析得到综合考虑3个优化指标的多目标最优加工参数组合,并进行试验验证。结果表明,多目标优化的最优工艺参数组合为高压波电流6 A、高压波电压120 V、低压波电流2 A、低压波电压100 V、脉宽10 μs、相位差50 %,使用该加工参数组合进行加工可以有效地提高加工效率、改善表面质量。

关键词: SiCp/Al, 工艺参数优化, 灰色关联度分析法, 信噪比, 电火花喷爆加工

Abstract: With the increasing application of SiCp/Al, higher requirements are put forward for their processing efficiency and surface quality. In response to the above questions, based on the orthogonal test of L₂₅(5⁶), 20 % of SiCp/Al composites are processed using a new and efficient EDM processing method—ejecting-explosion EDM. The main optimization indicators are MRR, TWR and Ra, and the process parameters are high-voltage wave current, high-voltage wave voltage, low-voltage wave current, low-voltage wave voltage, pulse width and phase difference. Based on the orthogonal test results, the influence of each process parameter on different optimization indicators and the combination of single-objective optimal processing parameters are studied by using the Signal to Noise Ratio (SNR). Based on the Grey Relational Analysis (GRA), the weights of each optimization index are determined according to the Analytic Hierarchy Process (AHP), and the multi-objective optimal processing parameter combination of the three optimization indicators is comprehensively considered and verified by experiment. The results show that the optimal process parameter combination for multi-objective optimization is high-voltage wave current 6 A, high-voltage wave voltage 120 V, low-voltage wave current 2 A, low-voltage wave voltage 100 V, pulse width 10 μs, and phase difference 50 %, and processing by using this processing parameter combination can effectively improve the processing efficiency and surface quality.

Key words: SiCp/Al, process parameters optimization, grey relational analysis, signal-to-noise ratio, ejecting explosion EDM

中图分类号:

TP273

刘宇, 韩钧, 曲嘉伟, 张诗奇, 陈海静. 基于信噪比和灰色关联分析的电火花喷爆加工工艺参数优化^*[J]. 现代制造工程, 2024, 526(7): 9-16.

LIU Yu, HAN Jun, QU Jiawei, ZHANG Shiqi, CHEN Haijing. Optimization of ejecting-explosion EDM parameters on SiCp/Al using signal-to-noise ratio and grey relational analysis[J]. Modern Manufacturing Engineering, 2024, 526(7): 9-16.

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基于信噪比和灰色关联分析的电火花喷爆加工工艺参数优化^*

Optimization of ejecting-explosion EDM parameters on SiCp/Al using signal-to-noise ratio and grey relational analysis

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