碳化硅颗粒增强铝基复合材料微细电火花线切割加工材料去除率研究

doi:10.3969/j.issn.1000-1093.2014.06.021

兵工学报 ›› 2014, Vol. 35 ›› Issue (6): 891-899.doi: 10.3969/j.issn.1000-1093.2014.06.021

碳化硅颗粒增强铝基复合材料微细电火花线切割加工材料去除率研究

耿雪松¹，迟关心¹，王玉魁¹，王振龙^1,2

(1.哈尔滨工业大学机电工程学院, 黑龙江哈尔滨 150001;2.微系统与微结构制造教育部重点实验室黑龙江哈尔滨 150001)

收稿日期:2013-09-04 修回日期:2013-09-04 上线日期:2014-07-24
作者简介:耿雪松(1984—)，男，博士研究生
基金资助:
国家重点基础研究发展计划项目(2012CB934102)；国家自然科学基金项目(51275112)；国家重大科技专项(2012ZX04001-011)

Research on Material Removal Rate of SiC/Al Particulate Metal Matrix Composite by Micro-wire ElectricalDischarge Machining

GENG Xue-song¹， CHI Guan-xin¹， WANG Yu-kui¹， WANG Zhen-long^1,2

(1.School of Mechanical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China;2.Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education,

Received:2013-09-04 Revised:2013-09-04 Online:2014-07-24

摘要/Abstract

摘要： 碳化硅颗粒增强铝基（SiCp/Al）复合材料微细电火花线切割加工材料去除过程受多种因素交互影响，难以获得有效的材料去除率数学模型，而在多约束条件下试验研究不失为解决该问题的一种有效方法。采用中心复合设计(CCD)实验方法，设计三因素五水平的SiCp/Al复合材料微细电火花线切割加工实验方案。利用响应曲面法建立材料去除率与主要电源参数(开路电压、电容和脉宽)的二阶模型，通过对实验数据的多元二次拟合，获得材料去除率的二次回归数学模型。进一步分析了实际加工条件对工艺参数的约束，并以提高 SiCp/Al复合材料微细电火花线切割加工材料去除率为目标建立工艺参数优化模型。设计粒子群优化（PSO）算法及其流程进行优化问题求解，其结果显示PSO算法可以快速有效地获得满足多约束的最佳工艺参数。

关键词: 机械制造工艺与设备, 金属基复合材料, 微细电火花线切割加工, 材料去除率, 中心复合设计, 粒子群优化

Abstract: The material removal of SiC/Al particulate (SiCp/Al) metal matrix composite by micro-wire electrical discharge machining (micro-WEDM) is influenced by many factors, which makes it difficult to obtain the mathematical model of material removal rate (MRR) effectively. To solve this problem, an experimental study method is conducted under the constraint conditions. A central composite design (CCD) testing with 3-factor and 5-level is carried out, SiCp/Al metal matrix composite machining test scheme is designed, and then a second-order relational model is established between MRR and main power parameters (open-circuit voltage, discharge capacitance, and pulse duration) by using response surface methodology. Through multiple quadratic fitting, a quadratic regression mathematical model of MRR is obtained. Constrains of actual machining condition upon the parameters are analyzed further. With the goal of improving MRR of SiCp/Al metal matrix composite by micro-WEDM, a parameters optimization model is established. Particle swarm optimization algorithm and its procedure are designed to solve the model.

Key words: manufaturing technology and equipment, metal matrix composite, micro-WEDM, material removal rate, central composite design, particle swarm optimization

中图分类号:

TG661

耿雪松，迟关心，王玉魁，王振龙. 碳化硅颗粒增强铝基复合材料微细电火花线切割加工材料去除率研究[J]. 兵工学报, 2014, 35(6): 891-899.

GENG Xue-song， CHI Guan-xin， WANG Yu-kui， WANG Zhen-long. Research on Material Removal Rate of SiC/Al Particulate Metal Matrix Composite by Micro-wire ElectricalDischarge Machining[J]. Acta Armamentarii, 2014, 35(6): 891-899.

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碳化硅颗粒增强铝基复合材料微细电火花线切割加工材料去除率研究

Research on Material Removal Rate of SiC/Al Particulate Metal Matrix Composite by Micro-wire ElectricalDischarge Machining

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