Suspended SiC particle deposition on plastic mold steel surfaces in powder-mixed electrical discharge machining

Ekmekci B. | Ulusöz F. | Ekmekci N. | Yaşar H.

Article | 2015 | Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture229 ( 3 ) , pp.475 - 486

The discharge gap phenomena in powder-mixed electrical discharge machining are examined using SiC powder mixing in water dielectric liquid. Surface modifications on machined work materials are investigated by means of optical, scanning electron microscopy and energy-dispersive spectroscopy. The experimental studies revealed that the surface morphology drastically affected the additives as means of secondary discharges and particle migration from dielectric liquid. Such mechanisms do not occur randomly and indicate a robust dependency with respect to powder suspension concentration, pulse on duration and current. The influence on dis . . .charge transitivity with respect to suspended particle concentration is noted with pock shape development due to secondary discharges followed by an intermediate stage signifying a sudden increase in particle migration from the dielectric liquid. The particles decomposed on the surface at specific operational conditions demonstrating the possibility of methodical surface alloying using the process. Finally, the mechanisms involved were elaborated with respect to operational parameters and discussed based on the experimental results. © IMechE 2014 Daha fazlası Daha az

A computer aided process planning system for concurrent engineering

Pham D.T. | Gologlu C.

Article | 2001 | Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture215 ( 8 ) , pp.1117 - 1131

This paper present ProPlanner, a hybrid computer aided process planning (CAPP) system designed to facilitate concurrent product development. ProPlanner automates information acquisition, product design interpretation, manufacturing operation planning, cutting tool selection, set-up planning and operation sequencing. The system employs a hybrid approach utilizing a combination of rule-based reasoning and object-oriented programming. It enables the early detection of design errors during the design stage before manufacturing and incorporates a feedback mechanism for correcting errors and giving suggestions to modify the product design . . .. © IMechE 2001 Daha fazlası Daha az

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