Cost Effective Machining Of Ceramics Cemoc
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Cost Effective Machining Of Ceramics Cemoc
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Author :
language : en
Publisher:
Release Date : 1997
Cost Effective Machining Of Ceramics Cemoc written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
The purpose of the CEMOC program was to support U.S. industry needs in fabricating precision components, from difficult to machine materials, while maintaining and enhancing the precision manufacturing skills of the Oak Ridge Complex. Oak Ridge and partner company personnel worked in a team relationship wherein each contributed equally to the success of the program. In general, Oak Ridge contributed a wider range of expertise to a given task while the companies provided operations-specific equipment and shop-floor services. Process control technologies, machining procedures and parameters, and coolant-related environmental tasks were the primary focus areas. The companies were very pleased with the results of the CRADAs and are planning on continuing the relationships. Finish machining operations contribute the majority of the costs associated with fabricating high quality ceramic products. These components are typically used in harsh environments such as diesel engines, defense machinery, and automotive components. The required finishing operations involve a variety of technologies including process controls, machine coolants, product certification, etc. and are not limited only to component grinding methods. The broad range of manufacturing problem solving expertise available in Oak Ridge provided resources that were far beyond what are typically available to the CRADA partners. These partners contributed equipment, such as state-of-the-art machine tools, and operation-specific experience base. In addition, addressing these challenging tasks enabled Oak Ridge personnel to maintain familiarity with rapidly advancing technologies, such as those associated with computer control systems.
Review
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Author : Oak Ridge National Laboratory
language : en
Publisher:
Release Date : 1994
Review written by Oak Ridge National Laboratory and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Nuclear energy categories.
Cost Effective Ceramic Machining Summary Of Three Body Wear Experiments
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Author :
language : en
Publisher:
Release Date : 2005
Cost Effective Ceramic Machining Summary Of Three Body Wear Experiments written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Loose-abrasive grinding experiments were conducted to compare relative grinding rates of BK7 glass, Si nitride, and alumina zirconia. Si nitride and alumina zirconia machined at about the same rate, while BK7 glass machined 6-8 times faster. Surface finish and subsurface were measured. Surface roughness of the ceramics is better than that of glass. Empirical equations for relating roughness and Preston coefficients were only qualitatively successful. Diamond and B[sub 4]C yield about the same removal rate, but this is not basis enough for recommending the cheaper abrasive for the fixed-abrasive machining process. B[sub 4]C is more friable than diamond, producing sharp cutting surfaces; however B[sub 4]C may not be a good abrasive for precision grinding. SiC produced excellent surface finish but low removal rates. Tabs, figs.
Machining Of Ceramics And Composites
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Author : Jahanmir
language : en
Publisher: CRC Press
Release Date : 1999-01-04
Machining Of Ceramics And Composites written by Jahanmir and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-01-04 with Technology & Engineering categories.
Presenting modern advances in the machining of ceramics and composites, this work offers broadly based, fundamental information for selecting the appropriate machining processes and parameters, developing successful manufacturing strategies, and designing novel machining systems. It focuses on scientific and engineering developments affecting the present and future of machining processes.
Handbook Of Advanced Ceramics Machining
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Author : Ioan D. Marinescu
language : en
Publisher: CRC Press
Release Date : 2006-11-16
Handbook Of Advanced Ceramics Machining written by Ioan D. Marinescu and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-11-16 with Technology & Engineering categories.
Ceramics, with their unique properties and diverse applications, hold the potential to revolutionize many industries, including automotive and semiconductors. For many applications, ceramics could replace metals and other materials that are more easily and inexpensively machined. However, current ceramic machining methods remain cost-prohibitive. Fortunately, the current flurry of research will soon yield new and better methods for machining advanced ceramic materials. Reflecting the life-long dedication of an unsurpassed team of experts from industry and academia, the Handbook of Advanced Ceramics Machining explores the latest developments in our understanding of the mechanisms involved in ceramics machining as well as state-of-the-art technologies. Multiple chapters are devoted to various types and aspects of the lapping and grinding processes, such as mechanisms, monitoring techniques, mono- versus polycrystalline abrasives, and tribological properties. Covering methods that offer high-rate material removal and others that provide extremely high-quality surface finish, this book examines conventional, new, and lesser-known methods including ductile grinding, belt centerless grinding, lapping, polishing, double-side grinding, laser-assisted grinding, ultrasonic machining, and the new electrolytic in-process dressing (ELID) grinding method. An indispensable toolkit for opening new avenues of possibility for ceramics applications, the Handbook of Advanced Ceramics Machining helps bring cost-effective, high-performance, and high-precision methods into standard practice.
Handbook Of Ceramics Grinding And Polishing
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Author : Toshiro Doi
language : en
Publisher: William Andrew
Release Date : 2017-01-12
Handbook Of Ceramics Grinding And Polishing written by Toshiro Doi and has been published by William Andrew this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-12 with Technology & Engineering categories.
Handbook of Ceramics Grinding and Polishing meets the growing need in manufacturing industries for a clear understanding of the latest techniques in ceramics processing. The properties of ceramics make them very useful as components-they withstand high temperatures and are durable, resistant to wear, chemical degradation, and light. In recent years the use of ceramics has been expanding, with applications in most industry sectors that use machined parts, especially where corrosion-resistance is required, and in high temperature environments. However, they are challenging to produce and their use in high-precision manufacturing often requires adjustments to be made at the micro and nano scale. This book helps ceramics component producers to do cost-effective, highly precise machining. It provides a thorough grounding in the fundamentals of ceramics-their properties and characteristics-and of the abrasive processes used to manipulate their final shape as well as the test procedures vital for success. The second edition has been updated throughout, with the latest developments in technologies, techniques, and materials. The practical nature of the book has also been enhanced; numerous case studies illustrating how manufacturing (machining) problems have been handled are complemented by a highly practical new chapter on the selection and efficient use of machine tools. Provides readers with experience-based insights into complex and expensive processes, leading to improved quality control, lower failure rates, and cost savings Covers the fundamentals of ceramics side-by-side with processing issues and machinery selection, making this book an invaluable guide for downstream sectors evaluating the use of ceramics, as well as those involved in the manufacturing of structural ceramics Numerous case studies from a wide range of applications (automotive, aerospace, electronics, medical devices)
Report On The Planning Workshop On Cost Effective Ceramic Machining Ceramic Technology Project
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Author :
language : en
Publisher:
Release Date : 1991
Report On The Planning Workshop On Cost Effective Ceramic Machining Ceramic Technology Project written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
A workshop on ''Cost Effective Ceramic Machining'' (CECM) was held at Oak Ridge Associated Universities Pollard Auditorium, Oak Ridge, Tennessee, May 1991. The purpose of this workshop was to present a preliminary project plan for industry critique and to identify specific components and cost-reduction targets for a new project on Cost Effective Ceramic Machining. The CECM project is an extension of the work on the Ceramic Technology for Advanced Heat Engines (CTAHE) Program sponsored by the Department of Energy, Office of Transportation Materials. The workshop consisted of fifteen invited papers, discussions, a survey of the attendee's opinions, and a tour of the High Temperature Materials Laboratory at ORNL. The total number of registrants was sixty-seven, including thirty-three from industry or private sector organizations, seven from universities, three from industry groups, fourteen from DOE laboratories (including ORNL, Y-12, and Lawrence Livermore Laboratory), three from trade associations, and three from other government organizations. Forty- one survey forms, which critiqued the proposed project plan, were completed by attendees, and the results are presented in this report. Valves, cam roller followers, water pump seals, and diesel engine head plates were rated highest fro application of ceramic machining concepts to reduce cost. Coarse grinding, abrasives and wheel technology, and fine grinding were most highly rated as regards their impact on cost reduction. Specific cost-reduction targets for given parts varied greatly in the survey results and were not felt to be useful for the purposes for the CECM plan development. A range of individual comments were obtained and are listed in an appendix. As a result of the workshop and subsequent discussions, a modified project plan, different in certain aspects from the original CECM plan, has been developed.
Cost Effective Machining And Inspection Of Structural Ceramics Crada Final Report For Crada Number Y 1292 0088
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Author :
language : en
Publisher:
Release Date : 1996
Cost Effective Machining And Inspection Of Structural Ceramics Crada Final Report For Crada Number Y 1292 0088 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
This CRADA supports the objective of demonstrating feasibility and minimizing manufacturing costs associated with the use of ceramic components in a heavy duty diesel engine manufactured by Detroit Diesel Corporation (DDC). Studies were conducted to evaluate existing, known data for ceramic material, and to identify additional data needed to better characterize a valve of ceramic composition. Tests were conducted to provide important information required for redesign of existing metal valves and other engine head components. A vendor was selected by DDC to produce the valve shapes for testing and Lockheed Martin Energy Systems (LMES) provided design modeling/analysis support. The effort also included the development of a bench-test apparatus to simulate the environment of a valve in operation that provided material data and confirmation of analytical results.
Cost Effective Method For Determining The Grindability Of Ceramics Final Report
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Author :
language : en
Publisher:
Release Date : 1997
Cost Effective Method For Determining The Grindability Of Ceramics Final Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
The objective of this program was to develop a cost-effective method to determine the grindability of ceramics leading to cost-effective methods for machining such ceramics. In this first phase of activity, Chand Kare Technical Ceramics directed its efforts towards development of a definition for ceramic grindability, design of grindability-test experiments, and development of a ceramics-grindability test system (CGTS). The grindability study also included the establishment of the correlation between the grindability and conventional grinding practices. The above goals were achieved. A definition based on material removal rate under controlled force grinding was developed. Three prototypes CGTSs were developed and tested; suitable design was identified. Based on this, a fully automatic CGTS was developed and is ready for delivery to Oak Ridge National Laboratory. Comprehensive grindability tests for various commercially available engineering ceramics were conducted. Experimental results indicated that ceramics have significantly different grindabilities even though their mechanical properties were not significantly different. This implies that grindability of ceramics can be greatly improved. Further study is needed to establish correlations between microstructure and grindability. Therefore, grindability should be evaluated during the development of new ceramics or improvement of existing ones. In this report, the development of the ceramic-grindability definition, the development of CGTS, extensive grindability results, and the preliminary correlation between grindability and mechanical properties (such as flexural strength, hardness, elastic modulus, and fracture toughness) were summarized.
Report On The Planning Workshop On Cost Effective Ceramic Machining
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Author :
language : en
Publisher:
Release Date : 1991
Report On The Planning Workshop On Cost Effective Ceramic Machining written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
A workshop on Cost Effective Ceramic Machining'' (CECM) was held at Oak Ridge Associated Universities Pollard Auditorium, Oak Ridge, Tennessee, May 1991. The purpose of this workshop was to present a preliminary project plan for industry critique and to identify specific components and cost-reduction targets for a new project on Cost Effective Ceramic Machining. The CECM project is an extension of the work on the Ceramic Technology for Advanced Heat Engines (CTAHE) Program sponsored by the Department of Energy, Office of Transportation Materials. The workshop consisted of fifteen invited papers, discussions, a survey of the attendee's opinions, and a tour of the High Temperature Materials Laboratory at ORNL. The total number of registrants was sixty-seven, including thirty-three from industry or private sector organizations, seven from universities, three from industry groups, fourteen from DOE laboratories (including ORNL, Y-12, and Lawrence Livermore Laboratory), three from trade associations, and three from other government organizations. Forty- one survey forms, which critiqued the proposed project plan, were completed by attendees, and the results are presented in this report. Valves, cam roller followers, water pump seals, and diesel engine head plates were rated highest fro application of ceramic machining concepts to reduce cost. Coarse grinding, abrasives and wheel technology, and fine grinding were most highly rated as regards their impact on cost reduction. Specific cost-reduction targets for given parts varied greatly in the survey results and were not felt to be useful for the purposes for the CECM plan development. A range of individual comments were obtained and are listed in an appendix. As a result of the workshop and subsequent discussions, a modified project plan, different in certain aspects from the original CECM plan, has been developed.