Wire EDM Mechanism of MMCs with the Variation of Reinforced Particle Size

被引：36

作者：

Pramanik, A. ^{[1
]}

Littlefair, G. ^{[2
]}

机构：

[1] Curtin Univ, Dept Mech Engn, Bentley, WA 6102, Australia

[2] Deakin Univ, Sch Engn, Waurn Ponds, Australia

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2016年 / 31卷 / 13期

关键词：

Aluminum; Composites; EDM; Machinability; Matrix; Particles; Reinforcement; Surface; Wire; MATERIAL REMOVAL; DISCHARGE;

D O I：

10.1080/10426914.2015.1117621

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The size of reinforced particles notably affects the electro-discharge machining (EDM) of metal matrix composites (MMCs). This paper explores the mechanism of wire EDM of MMCs with different sizes of reinforced particles as well as the corresponding unreinforced matrix material. The mechanisms of material removal, surface generation, and taper kerf formation were investigated. This study shows that the particles' ability to protect matrix materials from the intense heat of electric arc controls the material removal rate, surface generation, and taper of kerf. The low melting point matrix material is removed very easily, but the heat resistance reinforced particles delay the removal of material and facilitate the transfer of the workpiece material to wire electrode and vice versa. Thus, the material stays longer in touch with intense heat and affects the surface generation, wire electrode wear, and width of the kerf.

引用

页码：1700 / 1708

页数：9

共 35 条

[1]

[Anonymous], 2005, CIRP ANN MANUF TECHN

[2] Failure Mechanisms of Nanoparticle Reinforced Metal Matrix Composite [J].