Electrical discharge machining (EDM) characteristics associated with electrical discharge energy on machining of cemented tungsten carbide

被引：79

作者：

Lin, Yan-Cherng ^{[1
]}

Chen, Yuan-Feng ^{[1
]}

Lin, Ching-Tien ^{[1
]}

Tzeng, Hsinn-Jyh ^{[2
]}

机构：

[1] Nankai Inst Technol, Dept Mech Engn, Caotun Town 54243, Nantou County, Taiwan

[2] So Taiwan Univ, Dept Mech Engn, Tainan, Taiwan

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2008年 / 23卷 / 3-4期

关键词：

cemented tungsten carbide; debris; discharge waveform; EDM; electrical discharge energy; electrode wear rate; heat-affected zone; machining characteristic; material removal rate; microhardness; peak current; pulse duration; surface roughness; surface crack; topography;

D O I：

10.1080/10426910801938577

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this investigation, cemented tungsten carbides graded K10 and P10 were machined by electrical discharge machining (EDM) using an electrolytic copper electrode. The machining parameters of EDM were varied to explore the effects of electrical discharge energy on the machining characteristics, such as material removal rate (MRR), electrode wear rate (EWR), and surface roughness. Moreover, the effects of the electrical discharge energy on heat-affected layers, surface cracks and machining debris were also determined. The experimental results show that the MRR increased with the density of the electrical discharge energy; the EWR and diameter of the machining debris were also related to the density of the electrical discharge energy. When the amount of electrical discharge energy was set to a high level, serious surface cracks on the machined surface of the cemented tungsten carbides caused by EDM were evident.

引用

页码：391 / 399

页数：9

共 18 条

[1] Electrical discharge machining of ZrB2-based ceramics [J].

Cheng, YM ;

Eubank, PT ;

Gadalla, AM .

MATERIALS AND MANUFACTURING PROCESSES, 1996, 11 (04) :565-574

[2] MICROSTRUCTURE AND MECHANICAL-PROPERTIES OF HOT-PRESSED SIC-TIC COMPOSITES [J].

ENDO, H ;

UEKI, M ;

KUBO, H .

JOURNAL OF MATERIALS SCIENCE, 1991, 26 (14) :3769-3774

[3] EXPANDING HEAT-SOURCE MODEL FOR THERMAL SPALLING OF TIB2 IN ELECTRICAL-DISCHARGE MACHINING [J].

GADALLA, AM ;

BOZKURT, B .

JOURNAL OF MATERIALS RESEARCH, 1992, 7 (10) :2853-2858

[4]

GADALLA AM, 1989, ADV MAT MANUFACTURIN, V4, P411

[5] Preliminary study of material removal in electrical-discharge machining of SiC/Al [J].

Hocheng, H ;

Lei, WT ;

Hsu, HS .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1997, 63 (1-3) :813-818

[6] ELECTRICAL-DISCHARGE MACHINING OF CAST METAL-MATRIX COMPOSITES [J].

HUNG, NP ;

YANG, LJ ;

LEONG, KW .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1994, 44 (3-4) :229-236

[7] UN-CONVENTIONAL MACHINING OF COMPOSITE-MATERIALS [J].

LAU, WS ;

YUE, TM ;

LEE, TC ;

LEE, WB .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1995, 48 (1-4) :199-205

[8] ELECTRICAL-DISCHARGE MACHINING OF CARBON-FIBER COMPOSITE-MATERIALS [J].

LAU, WS ;

WANG, M ;

LEE, WB .

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 1990, 30 (02) :297-308

[9]

LEE LC, 1992, J MATER PROCESS TECH, V29, P213

[10] Study of the surface integrity of the machined workpiece in the EDM of tungsten carbide [J].

Lee, SH ;

Li, XP .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2003, 139 (1-3) :315-321

← 1 2 →