Download or read book Local Case hardening of Steel by Laser Radiation written by V. F. Brekhovskikh and published by . This book was released on 1969 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The hardening of steel in the zone of action of focused radiation from a laser in the free-generation mode and with modulated-Q is considered. The maximum extent of the hardened areas is estimated, taking into account the characteristics of the laser radiation. The heating and cooling rates of the material were determined theoretically. The surface hardening of metal products is of much interest in machine design. A great many methods of surface hardening of metals are known: high-frequency current hardening, volume hardening of PP (low-annealing) steels, volume hardening of cemented and nitro-cemented items, etc. With the exception of the electron beam all other methods of surface hardening do not permit obtaining case-hardening of micro-regions to a depth of some tens or hundreds of microns. However, use of an electron beam is not always warranted due to the high cost of the equipment and the requirement for placing the item being treated in a vacuum. Experiments have shown that after laser treatment of the surfaces of U8, 45, KhVG and other steels, the micro-hardness in the treatment zone is increased from 300-400 up to 900-1000 kg/sq mm, and in certain cases to 2200 kg/sq mm. In this connection it is of interest to discuss some aspects of the possible use of laser radiation for the thermal treatment of steels and alloys. The paper analyzes some experimental data on the surface hardening of a number of steels and theoretical estimates are made of the dimensions of the regions of hardening obtained after irradiation by a laser. (Author).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Surface Hardening of Steels written by Joseph R. Davis and published by ASM International. This book was released on 2002-01-01 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation A practical selection guide to help engineers and technicians choose the mot efficient surface hardening techniques that offer consistent and repeatable results. Emphasis is placed on characteristics such as processing temperature, case/coating thickness, bond strength, and hardness level obtained. The advantages and limitations of the various thermochemical, thermal and coating/surface modification technologies are compared
Download or read book Laser Surface Hardening written by Janez Grum and published by . This book was released on 2002 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Case hardening of Steel written by Harry Brearley and published by . This book was released on 1921 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Hardening of Steels by Laser and Electron Beam written by Materials Information (Firm) and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Surface Interactions written by Rashid A. Ganeev and published by Springer Science & Business Media. This book was released on 2013-10-17 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about the interaction of laser radiation with various surfaces at variable parameters of radiation. As a basic principle of classification we chose the energetic or intensity level of interaction of laser radiation with the surfaces. These two characteristics of laser radiation are the most important parameters defining entire spectrum of the processes occurring on the surfaces during interaction with electromagnetic waves. This is a first book containing a whole spectrum of the laser-surface interactions distinguished by the ranges of used laser intensity. It combines the surface response starting from extremely weak laser intensities (~1 W cm-2) up to the relativistic intensities (~1020 W cm-2 and higher). The book provides the basic information about lasers and acquaints the reader with both common applications of laser-surface interactions (laser-related printers, scanners, barcode readers, discs, material processing, military, holography, medicine, etc) and unusual uses of the processes on the surfaces under the action of lasers (art conservation, rangefinders and velocimeters, space and earth explorations, surface engineering and ablation, and others). The scientific applications of laser-surfaces interactions (surface optical nonlinearities, surface enhanced Raman spectroscopy, surface nanostructuring, nanoripples and clusters formation, X-ray lasers and harmonic generation from the surfaces) are discussed from the point of view of the close relations between the properties of surface and matter, which is a cornerstone of most of studies of materials. The novelty of the approach developed in Laser - Surface Interactions is related with the interconnection of scientific studies with numerous applications of the laser-surface interactions separated in different chapters by the ranges of laser intensities. We present most recent achievements in this field. The book provides valuable information for different ranges of reader's preparedness to the laser-related topics (from unprepared readers, to students, engineers and researchers, professionals and academics).
Download or read book Laser Assisted Microtechnology written by Simeon M. Metev and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-Assisted Microtechnology deals with laser applications to a wide variety of problems in microelectronic design and fabrication. It covers micromachining of thin films, microprocessing of materials, maskless laser micropatterning and laser-assisted synthesis of thin-film systems. The monograph describes fundamental aspects and practical details of the technological processes as well as the optimum conditions for their realization.
Download or read book Surface Hardening of an AISI D6 Cold Work Steel Using a Fiber Laser written by Flavia Aline Goia and published by . This book was released on 2011 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser surface treatments represent some of the most advanced and versatile processes for enhanced materials applications. Laser hardening is a technique to generate a hard wear-resistant surface microstructure in metals due to the rapid heating and cooling cycles imposed by a laser beam. This work intends to understand the influence of the laser variables on hardness after laser hardening of an AISI D6 steel. A fiber laser, which is a new source available for industrial applications, has been used. The overall absorptivity measured was ∼37 % and the laser treatment produced two different zones: Remelted and heat-affected. The surface layer was remelted and composed of martensite and retained austenite. The region next to the free surface is composed of primary austenite dendrites with martensite plates with hardness between 400 and 500 HV. The region called the heat-affect zone is composed of martensite, retained austenite, and carbides and has a hardness up to 800 HV. The case depth in laser treated samples was between 1 and 2 mm.
Download or read book Neutrons and Synchrotron Radiation in Engineering Materials Science written by Walter Reimers and published by John Wiley & Sons. This book was released on 2008-06-25 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Besides its coverage of the four important aspects of synchrotron sources, materials and material processes, measuring techniques, and applications, this ready reference presents both important method types: diffraction and tomography. Following an introduction, a general section leads on to methods, while further sections are devoted to emerging methods and industrial applications. In this way, the text provides new users of large-scale facilities with easy access to an understanding of both the methods and opportunities offered by different sources and instruments.
Download or read book Metals Abstracts written by and published by . This book was released on 1994 with total page 1584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Case hardening written by Carnegie Library of Pittsburgh and published by . This book was released on 1918 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Estonian Academy of Sciences Engineering written by and published by . This book was released on 2004-03 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Development Reports written by and published by . This book was released on 1970 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manufacturing Technology written by Helmi A. Youssef and published by CRC Press. This book was released on 2023-08-17 with total page 1469 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition textbook provides comprehensive knowledge and insight into various aspects of manufacturing technology, processes, materials, tooling, and equipment. Its main objective is to introduce the grand spectrum of manufacturing technology to individuals who will be involved in the design and manufacturing of finished products and to provide them with basic information on manufacturing technologies. Manufacturing Technology: Materials, Processes, and Equipment, Second Edition, is written in a descriptive manner, where the emphasis is on the fundamentals of the process, its capabilities, typical applications, advantages, and limitations. Mathematical modeling and equations are used only when they enhance the basic understanding of the material dealt with. The book is a fundamental textbook that covers all the manufacturing processes, materials, and equipment used to convert the raw materials to a final product. It presents the materials used in manufacturing processes and covers the heat treatment processes, smelting of metals, and other technological processes such as casting, forming, powder metallurgy, joining processes, and surface technology. Manufacturing processes for polymers, ceramics, and composites are also covered. The book also covers surface technology, fundamentals of traditional and nontraditional machining processes, numerical control of machine tools, industrial robots and hexapods, additive manufacturing, and industry 4.0 technologies. The book is written specifically for undergraduates in industrial, manufacturing, mechanical, and materials engineering disciplines of the second to fourth levels to cover complete courses of manufacturing technology taught in engineering colleges and institutions all over the world. It also covers the needs of production and manufacturing engineers and technologists participating in related industries where it is expected to be part of their professional library. Additionally, the book can be used by students in other disciplines concerned with design and manufacturing, such as automotive and aerospace engineering.
Download or read book U S Government Research and Development Reports Index written by and published by . This book was released on 1970 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metallurgy for the Non Metallurgist Second Edition written by Arthur C. Reardon and published by ASM International. This book was released on 2011-01-01 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: The completely revised Second Edition of Metallurgy for the Non-Metallurgist provides a solid understanding of the basic principles and current practices of metallurgy. This major new edition is for anyone who uses, makes, buys or tests metal products. For both beginners and others seeking a basic refresher, the new Second Edition of the popular Metallurgy for the Non-Metallurgist gives an all-new modern view on the basic principles and practices of metallurgy. This new edition is extensively updated with broader coverage of topics, new and improved illustrations, and more explanation of basic concepts. Why are cast irons so suitable for casting? Do some nonferrous alloys respond to heat treatment like steels? Why is corrosion so pernicious? These are questions that can be answered in this updated reference with many new illustrations, examples, and descriptions of basic metallurgy.
