[PDF] Microstructure Changes In Steel Caused By Spark Erosion Machining eBook

Author : Neelesh Kumar Jain
Publisher : CRC Press
Page : 218 pages
File Size : 30,16 MB
Release : 2020-11-01
Category : Science
ISBN : 1498787940

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This book bridges the gaps where limited resources are available on comprehensive coverage of spark erosion machining (SEM) based processes. It provides researchers and scholars a vast amount of information on recent research on the subject. It also serves as a resource of novel and specialized applications of spark erosion machining and its variants, for students and faculties involved with advanced machining processes. Some salient features of the book: Describes various important aspects of spark-erosion based processes including their derived and hybrid processes. Includes a broad scope of SEM applications from industrial, commercial, and scientific to aerospace, automobiles and biomedical domains. Covers a wide range of materials applications of SE-based processes to different exotic and difficult-to-machine materials, i.e. superalloys, composites, ceramics, shape memory alloys, etc. Provides details micro version of EDM and WEDM processes and their specialized applications.

Author :
Publisher :
Page : 50 pages
File Size : 50,78 MB
Release : 1980
Category :
ISBN :

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The effects of the microstructure of two ductile steels on their solid particle erosion were determined. The steels chosen allowed microstructural changes to be made without drastically changing their hardness, which is reported to be a direct function of erosion resistance. The steels used were plain carbon 1075 and 1020 in the coarse pearlite, fine pearlite, and spheroidized forms for the 1075 and in three spherodized conditions for the 1020 steel. Single particle and multiple particle erosion tests were conducted using 240 {micro}m diameter SiC particles, angles of impingement of 15°, 30°, and 90° and velocities of 30.5 mps (100fps) and 61 mps (200fps). Both surface and subsurface analyses were conducted using scanning electron microscopy. In the room temperature erosion tests, the spheroidized microstructure of the 1075 steel eroded less than either of the two pearlitic microstructures. It was found that the pearlitic steels exhibited cracking at the eroded surface as well as beneath it, causing greater material removal. The spheroidized structure showed no surface cracking; however, cracking did occur at a depth of approximately 20 {micro}m below the surface. The carbide particle spacing in the 1020 spheroidized steel also had a measureable effect on the erosion rate, The hardness of the various microstructures had an inverse relation to the erosion rate,

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Page : 19 pages
File Size : 32,70 MB
Release : 1981
Category :
ISBN :

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In this paper, the effects of the microstructure of two ductile steels on their behavior under solid particle erosion were determined. The steels chosen allowed microstructural changes to be made without drastically changing their hardness, which is reported to be a direct function of erosion resistance. The steels used were plain carbon 1075 steel in coarse pearlite, fine pearlite and spheroidized forms and plain carbon 1020 steel in three spheroidized conditions. Single-particle and multiple-particle erosion tests were conducted using SiC particles 240?m in diameter, angles of impingement of 15°, 30° and 90° and velocities of 30.5 m s-1 (100 ft s-1) and 61 m s-1 (200 ft s-1). Both surface and subsurface analyses were conducted using scanning electron microscopy. In the room temperature erosion tests the spheroidized microstructure of the 1075 steel eroded less than did either of the two pearlitic microstructures. It was found that the pearlitic steels exhibited cracking at the eroded surface as well as beneath it and that this caused greater material removal. The spheroidized structure showed no surface cracking; however, cracking did occur at a depth of approximately 20?m below the surface. The carbide particle spacing in the 1020 spheroidized steel also had a measurable effect on the erosion rate. Finally, the hardness of the various microstructures had an inverse relation to the erosion rate.

Author : Frank Vollertsen
Publisher : Springer Nature
Page : 358 pages
File Size : 38,89 MB
Release : 2019-09-13
Category : Technology & Engineering
ISBN : 3030112802

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This open access book contains the research report of the Collaborative Research Center “Micro Cold Forming” (SFB 747) of the University of Bremen, Germany. The topical research focus lies on new methods and processes for a mastered mass production of micro parts which are smaller than 1mm (by forming in batch size higher than one million). The target audience primarily comprises research experts and practitioners in production engineering, but the book may also be of interest to graduate students alike.

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Page : 524 pages
File Size : 36,85 MB
Release : 1961
Category : Iron
ISBN :

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Includes the institute's Proceedings.

Author : Şenol Bayraktar
Publisher : CRC Press
Page : 245 pages
File Size : 14,43 MB
Release : 2024-09-05
Category : Technology & Engineering
ISBN : 1040128580

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This book provides essential information on environmentally benign/sustainable machining processes including innovations and developments in conventional machining, considering economy, safety, and productivity. Developments in machine tools, recent research on green lubricants and lubrication techniques, process hybridization, and the role of optimization techniques are discussed. Green machining of difficult-to-machine materials and composites is also explained with attempts towards making electric discharge and electrochemical machining technologies. Features: Covers up to date and latest information on environmentally benign machining technologies. Includes current approaches regarding the machinability properties of biomaterials, smart materials, and difficult-to-cut materials. Reviews theoretical understanding and practical aspects of using different technological approaches to attain sustainability in machining. Includes sustainability aspects for both conventional and modern machining. Aids industrial users in the optimum selection of machining parameters with regard to sustainability. This book is aimed at researchers and professionals in manufacturing and mechanical engineering, and sustainable processes.