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electrical discharge machining equipment

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Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002166
EISBN: 978-1-62708-188-7
... from the workpiece surface, producing a small crater at the discharge site, as in electrical discharge machining. Equipment and Operation The stream of sparks is produced by high-frequency pulses of direct current in an arrangement such as that shown in Fig. 1 . The power supply...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001233
EISBN: 978-1-62708-170-2
... the processing tool and the workpiece surfaces. This article provides information on the equipment used, applications, process capabilities, and limitations of ECM and EDM. electrical discharge machining equipment electrochemical machining electrochemical machining equipment electrodischarge machining...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003186
EISBN: 978-1-62708-199-3
... produce closer tolerances and finer surface finishes. Nontraditional Machining Processes Nontraditional machining processes include such processes as electrical discharge machining (EDM), electrochemical machining (ECM), ultrasonic machining (USM), and chemical milling (CM). In these operations...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002155
EISBN: 978-1-62708-188-7
... Methods Primarily because of rapid increases in the sales of wire electrical discharge machining and laser equipment, thermal processes have become the fastest-growing segment of the nontraditional market. Given the diversity of energy sources used in this category (electrons, photons, electrical...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003194
EISBN: 978-1-62708-199-3
... Electrochemical machining (ECM) Electrical discharge machining (EDM) Principle Controlled metal removal by anodic dissolution. Direct current (dc) Metal is removed by rapid spark discharges between an electrode and a Equipment current passes through flowing film of conductive solution that conductive workpiece...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005158
EISBN: 978-1-62708-186-3
... Abstract The electrical discharge machining (EDM) process is used for machining dies because of its ability to machining difficult geometries or materials with poor machinability. This article provides a discussion on the fundamentals of electrical discharge erosion and the principles of EDM...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002163
EISBN: 978-1-62708-188-7
... ELECTROSTREAM DRILLING (ES) AND CAPILLARY DRILLING (CD) are electrochemical machining processes that were developed by General Electric and Rolls Royce, respectively, for drilling holes that are too deep to be drilled by electrical discharge machining and too small to be drilled by shaped tube electrolytic...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002162
EISBN: 978-1-62708-188-7
... Abstract Electrochemical discharge grinding (ECDG) is a combination of electrochemical grinding (ECG) and electrical discharge grinding (EDG), with some modification of each. This article commences with a schematic illustration of a setup for ECDG using a solid bonded graphite wheel...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002165
EISBN: 978-1-62708-188-7
... Abstract This article discusses the use of a shaped electrode for electrical discharge machining (EDM). It describes the operational methodology of the EDM. Topography, metallurgical and chemical effects, and surface integrity of the EDM surface are reviewed. The article provides information...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002157
EISBN: 978-1-62708-188-7
... ) and an original electrical discharge machined finish with an average roughness ( R a ) of 2 μm (80 μin.) that was processed with media formulations of varying abrasive grain size and viscosity. Despite the varying parameters for the media, the surface improvement after only one cycle with 2 × 10 6 mm 3 (120...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005288
EISBN: 978-1-62708-187-0
... thickness being between 14 and 20 mm (0.6 and 0.8 in.). The produced coil can be automatically discharged onto a subsequent discharge table. A majority of horizontal strip casters are equipped with an in-line milling machine by which the top and bottom of the cast surface is cleaned of oxides...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006075
EISBN: 978-1-62708-175-7
..., or inside control and electrical panels and poorly sealed processing equipment, and so on. Dust accumulated in such areas may be hard to see. It can build up unnoticed over time and may reach dangerous concentrations, from a dust explosion perspective. Explosive Concentration Evaluate the amount...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006544
EISBN: 978-1-62708-290-7
... the type of material flow performance experienced ( Ref 12 ). Unfortunately, the strong majority of standard design storage equipment can yield undesirable consequences with hard-to-handle materials. Most standard storage silos and bins discharge bulk materials in a funnel flow pattern. With funnel...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002161
EISBN: 978-1-62708-188-7
.... The process was introduced in the early 1950s, evolving from developments in the U.S.S.R. on electrical discharge machining. Both processes, electrochemical machining and electrical discharge machining (EDM), make use of the direct application of the electrical energy in metal removal. However, ECM and ECG...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002164
EISBN: 978-1-62708-188-7
... Turbine disk cooling passages Oil passages Fuel nozzles Any holes where electrical discharge machining (EDM) recast is not allowable Other applications of the STEM process include: Starting holes for wire EDM cuts, especially where the length of cut exceeds 100 mm (4 in.) Drilling...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006430
EISBN: 978-1-62708-192-4
... gearboxes motor current signature analysis safety risk assessment wear wind generator Material wear is a primary cause of degradation of electric machines and driven equipment or powertrains. Wear is caused by either normal operation or abnormal conditions and is also dependent upon the type...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005793
EISBN: 978-1-62708-165-8
... into a carbonitriding process. Fig. 2 Schematic process procedure Theoretical Background on Glow-Discharge Plasma A plasma is an electrically generated gaseous mixture consisting of positively and negatively charged particles as well as neutral species and electrons. Although gaseous in nature, it has...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001443
EISBN: 978-1-62708-173-3
..., but it is unique in that the heat for welding is created at the faying surfaces of the joint not only by resistance to the flow of electric current, but also by arcs across the interface. Upset welding (UW) differs from flash welding in that no arc is generated by the process. Capacitor discharge stud welding...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006960
EISBN: 978-1-62708-439-0
... machines. The laser radiation is fully contained within the machine and managed by safety interlocks. However, overriding the safety controls results in potential laser exposure and could create a hazardous situation. Equipment not grounded or isolated for electrostatic discharge may be vulnerable...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001487
EISBN: 978-1-62708-173-3
... machines, electrode holders, and personal protective devices. Adequate supervision must be provided to ensure that all equipment is properly used and maintained. Training Thorough and effective training is a key aspect of a safety program. Adequate training is mandated under provisions of the U.S...