Review of Electrochemical and Electrodischarge Machining

Rajurkar, K. P.; Sundaram, Murali M.; Malshe, Ajay P.

doi:10.1016/j.procir.2013.03.002

Cited by 339 publications

(130 citation statements)

References 136 publications

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“…12. Mikro kompresor o średnicy 1 mm (a) i mikro wirnik turbiny wykonane frezowaniem EDM [10] Obrabiarki EDM Rozwój obrabiarek EDM jest bardzo dynamiczny. Świad-czą o tym prospekty czołowych producentów.…”

Section: A) B)unclassified

Development trends of selected unconventional manufacturing processes

Ruszaj¹,

Skoczypiec²

2015

Mechanik

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W przemyśle w coraz większym zakresie stosowane są nowe materiały o specjalnych właściwościach, zwykle trudne do efektywnego kształtowania metodami tradycyjnymi. Z tego względu racjonalnym rozwiązaniem jest zastosowanie metod niekonwencjonalnych a szczególne obróbki elektrochemicznej, elektroerozyjnej oraz metod hybrydowych. W artykule przedstawione zostaną przede wszystkim zasadnicze kierunki rozwoju i praktyczne zastosowania wyżej wymienionych procesów obróbkowych.SŁOWA KLUCZOWE: obróbka elektrochemiczna, obróbka elektroerozyjna, metody hybrydowe.In industry the range of practical applications of new materials with special properties significantly increases. These materials are usually difficult for traditional machining; so, the most efficient for shaping parts made of above mentioned materials are electrochemical, electrodischarge and hybrid machining processes. In the paper will be presented first of all basically directions of development and practical applications of these unconventional machining processes. KEYWORDS: electrochemical machining, electrodischarge machining, hybrid machining processes. WprowadzenieInżynieria materiałowa rozwija się bardzo dynamicznie i oferuje wciąż nowe materiały o specjalnych właściwo-ściach. Do takich już stosowanych materiałów zaliczane są między innymi: wysoko wytrzymałe stopy niklu, tytanu, materiały kompozytowe (np. PCD-Co, Al-SiC, Al-Al 2 O 3 ) oraz ceramiczne (np. SiC, Al 2 O 3 , ZrO 2 , MgO 2 ), półprzewodniki (np. Si) oraz tworzywa sztuczne. Specjalne materiały kompozytowe znajdują coraz szersze zastosowanie w przemyśle motoryzacyjnym, lotniczym, kosmicznym, zbrojeniowym, jądrowym, elektronicznym, mechatronicznym czy medycznym. Wynika to z ich właściwości, które można kształtować przez dobór odpowiedniej osnowy oraz zbrojenia. Racjonalne zastosowanie w praktyce przemysłowej nowych materiałów jest możliwe dopiero po opracowaniu efektywnych metod ich kształtowania. Specjalne stopy czy materiały kompozytowe o osnowie metalicznej -przewodzącej prąd elektryczny mogą być kształtowane z wykorzystaniem takich metod niekonwencjonalnych jak obróbka elektrochemiczna, elektroerozyjna czy metody hybrydowe. Konieczność dostosowania tych metod do obróbki wyżej wymienionych materiałów stanowi istotny element stymulujący ich dynamiczny rozwój. Kolejne czynniki stymulujące ich rozwój to:

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Section: A) B)unclassified

Development trends of selected unconventional manufacturing processes

Ruszaj¹,

Skoczypiec²

2015

Mechanik

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“…Compared with laser drilling [3,4] and electrochemical drilling [5,6], mechanical drilling is the most useful machining method for high aspect ratio microdrilling in practice, because it can process a variety of materials with finer quality at lower cost [7][8][9][10]. To satisfy the requirement of high aspect ratio microdrilling on the PCBs, efforts have been devoted to designing and manufacturing microdrill bits with large aspect ratios [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Error Separation Method for Precision Measurement of the Run-Out of a Microdrill Bit by Using a Laser Scan Micrometer Measurement System

Niu

Chen

Shimizu

et al. 2018

JMMP

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This paper describes an error separation method for a precision measurement of the run-out of a microdrill bit by using a measurement system consisting of a concentricity gauge and a laser scan micrometer (LSM). The proposed error separation method can achieve a sub-micrometric measurement accuracy of the run-out of the microdrill bit without the requirement of ultra-precision rotary drive devices. In the measurement, the spindle error motion of the concentricity gauge is firstly measured by using the LSM and a small-diameter artifact, instead of the conventionally used displacement probes and large-diameter artifact, in order to determine the fine position of the concentricity gauge when the spindle error motion is at its minimum. The microdrill bit is rotated at the fine position for the measurement of the run-out, so that the influence of the spindle error motion can thus be reduced, which could not be previously realized by commercial measurement systems. Experiments were carried out to verify the feasibility of the proposed error separation method for the measurement of the run-out of the microdrill bit. The measurement results and the measurement uncertainty confirmed that the proposed method is reliable for the run-out measurement with sub-micrometric accuracy.

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“…An advantage of EDM technology is that it is possible to machine hard materials and complex shape geometries. The EDM is included in a group of non-conventional technology with electrochemical machining [1][2][3], wire electrical discharge machining [4] and friction-welding [5,6]. In the EDM process, material is removed from the workpiece through a series of electrical discharges occurring in the gap between the working electrode and the workpiece.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Surface Layer Properties of High Thermal Conductivity Tool Steel after Electrical Discharge Machining

Świercz

Oniszczuk-Świercz

2017

Metals

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New materials require the use of advanced technology in manufacturing complex shape parts. One of the modern materials widely used in the tool industry for injection molds or hot stamping dies is high conductivity tool steel (HTCS) 150. Due to its hardness (55 HRC) and thermal conductivity at 66 W/mK, this material is difficult to machine by conventional treatment and is being increasingly manufactured by nonconventional technology such as electrical discharge machining (EDM). In the EDM process, material is removed from the workpiece by a series of electrical discharges that cause changes to the surface layers properties. The final state of the surface layer directly influences the durability of the produced elements. This paper presents the influence of EDM process parameters: discharge current I c and the pulse time t on on surface layer properties. The experimental investigation was carried out with an experimental methodology design. Surface layers properties including roughness 3D parameters, the thickness of the white layer, heat affected zone, tempered layer and occurring micro cracks were investigated and described. The influence of the response surface methodology (RSM) of discharge current I c and the pulse time t on on the thickness of the white layer and roughness parameters Sa, Sds and Ssc were described and established.

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Review of Electrochemical and Electrodischarge Machining

Cited by 339 publications

References 136 publications

Development trends of selected unconventional manufacturing processes

Development trends of selected unconventional manufacturing processes

Error Separation Method for Precision Measurement of the Run-Out of a Microdrill Bit by Using a Laser Scan Micrometer Measurement System

Experimental Investigation of Surface Layer Properties of High Thermal Conductivity Tool Steel after Electrical Discharge Machining

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