Análisis de la soldabilidad de fundición nodular

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (114 download)

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Book Synopsis Análisis de la soldabilidad de fundición nodular by : Mauricio Andres Banguero Arroyo

Download or read book Análisis de la soldabilidad de fundición nodular written by Mauricio Andres Banguero Arroyo and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resumen: La fundición nodular es un tipo comercial de hierro fundido que contiene entre 2.5 y 4% de carbono y de 1 a 3% de silicio. Presenta una alta fluidez al ser fundido; tiene una contracción moderada durante la solidificación, su tenacidad o resistencia al impacto y ductilidad son bajas, lo que limita la aplicación de soldadura en este material. Las propiedades mecánicas de la fundición nodular dependen de la microestructura y la distribución de los constituyentes microestructurales. El constituyente microestructural que tiene mayor efecto sobre las propiedades es el grafito, donde la cantidad, tamaño y forma de las partículas afectan básicamente la resistencia y la ductilidad del material, por esto se debe seleccionar adecuadamente un electrodo a partir de su composición química para que las propiedades mecánicas del material sean estables y/o mejoradas. Cuando el material se calienta, como en el caso de la realización de una soldadura la matriz se puede enriquecer localmente de carbono y por el enfriamiento rápido, en la zona afectada térmicamente, pueden llegar a formarse fases duras y frágiles que pueden causar agrietamiento. Debido a estos factores metalúrgicos, los hierros fundidos son más difíciles de soldar que los aceros al carbono, además las eficiencias (recuperación de las propiedades mecánicas de las piezas) en las juntas no alcanzan el 100%. En la soldadura también se debe tener en cuenta las condiciones ambientales del sitio de trabajo, ya que si el lugar es demasiado húmedo suele producir porosidad induciendo el rechazo de la unión soldada. En la soldabilidad de las fundiciones nodulares la escogencia de los equipos para la realización de la soldadura es muy importante ya que si no son los adecuados no podrán tener una temperatura uniforme en el proceso y se perderían algunas propiedades mecánicas y metalúrgicas.

Estudio de la soldabilidad en las fundiciones grises

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (991 download)

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Book Synopsis Estudio de la soldabilidad en las fundiciones grises by : Mauricio Escobar Castrillon

Download or read book Estudio de la soldabilidad en las fundiciones grises written by Mauricio Escobar Castrillon and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A través de la investigación se pretende dar una pauta sobre la utilización de electrodos con alma de níquel para fundición; estos electrodos se probaran sobre distintos tipos de fundición, con características y propiedades diferentes. Todas las fundiciones de hierro presentan un mismo problema en común que afecta considerablemente su soldabilidad: la gran cantidad de carbono que poseen. Los procesos de fabricación aplicados a este material, así como los tratamientos térmicos, pueden producir microestructuras útiles en la mayoría de los casos; sin embargo el ciclo térmico inherente a la soldadura, generalmente produce microestructuras no deseables. El material adyacente al depósito de soldadura se calienta hasta altas temperaturas, que dependen del proceso usado y la tasa de enfriamiento de la Zona Afectada Térmicamente (ZAT), que en algunos casos puede llegar a ser demasiado rápida. Existe además la tendencia a la formación de carburos tanto en la Zona Fundida No Mezclada (ZFNM), así como la posible formación de martensita, la cual posee un alto contenido de carbono, ubicándose en la ZAT, debido al mismo ciclo térmico. Ambas microestructuras son muy frágiles y por lo tanto son susceptibles al agrietamiento, ya sea durante la aplicación de la misma soldadura o durante el servicio. El grado de este agrietamiento depende directamente del tipo de fundición, las condiciones de soldadura y el tratamiento térmico post soldadura. Según el Iron Casting Handbook [1] desde el punto de vista de la soldabilidad, los requerimientos para soldar una fundición están divididos en tres grupos: (a) Soldaduras de alta resistencia, (b) soldaduras de baja resistencia y (c) recubrimientos. En este caso nos concentramos en los dos primeros casos. La característica más distintiva de las fundiciones grises con respecto a otras fundiciones, radica en que su contenido de carbono se encuentra en exceso, por encima de aquel que puede ser admitido en soldabilidad máxima por la fase ........

The Metals Black Book

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ISBN 13 :
Total Pages : 738 pages
Book Rating : 4.:/5 (41 download)

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Book Synopsis The Metals Black Book by : Michael Lash Wayman

Download or read book The Metals Black Book written by Michael Lash Wayman and published by . This book was released on 1998 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:

CASTI Metals Black Book

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ISBN 13 :
Total Pages : 854 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis CASTI Metals Black Book by : John E. Bringas

Download or read book CASTI Metals Black Book written by John E. Bringas and published by . This book was released on 2003 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ductile Iron Handbook

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ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Ductile Iron Handbook by : Al Alagarsamy

Download or read book Ductile Iron Handbook written by Al Alagarsamy and published by . This book was released on 1992 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

AWS A3.0:2001, Standard Welding Terms and Definitions

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Publisher :
ISBN 13 : 9780871716248
Total Pages : 119 pages
Book Rating : 4.7/5 (162 download)

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Book Synopsis AWS A3.0:2001, Standard Welding Terms and Definitions by : AWS A2 Committee on Definitions and Symbols

Download or read book AWS A3.0:2001, Standard Welding Terms and Definitions written by AWS A2 Committee on Definitions and Symbols and published by . This book was released on 2001-01-01 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard is a glossary of the technical terms used in the welding industry. Its purpose is to aid in the communication of welding information. Since it is intended to be a comprehensive compilation of welding terminology, nonstandard terms used in the welding industry are also included. All terms are either standard or nonstandard. They are arranged in the conventional dictionary letter-by-letter alphabetical sequence.

The Metals Red Book

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ISBN 13 :
Total Pages : 630 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis The Metals Red Book by : John E. Bringas

Download or read book The Metals Red Book written by John E. Bringas and published by . This book was released on 1998 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:

British Chemical Plant

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ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (334 download)

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Download or read book British Chemical Plant written by and published by . This book was released on 1961 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Castilla's Spanish and English Technical Dictionary: English-Spanish

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ISBN 13 :
Total Pages : 1626 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Castilla's Spanish and English Technical Dictionary: English-Spanish by : Castilla's Spanish and English technical dictionary

Download or read book Castilla's Spanish and English Technical Dictionary: English-Spanish written by Castilla's Spanish and English technical dictionary and published by . This book was released on 1958 with total page 1626 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ship Construction and Welding

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Publisher : Springer
ISBN 13 : 9811029555
Total Pages : 322 pages
Book Rating : 4.8/5 (11 download)

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Book Synopsis Ship Construction and Welding by : Nisith R. Mandal

Download or read book Ship Construction and Welding written by Nisith R. Mandal and published by Springer. This book was released on 2016-11-09 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses various aspects of ship construction, from ship types and construction materials, to welding technologies and accuracy control. The contents of the book are logically organized and divided into twenty-one chapters. The book covers structural arrangement with longitudinal and transverse framing systems based on the service load, and explains basic structural elements like hatch side girders, hatch end beams, stringers, etc. along with structural subassemblies like floors, bulkheads, inner bottom, decks and shells. It presents in detail double bottom construction, wing tanks & duct keels, fore & aft end structures, etc., together with necessary illustrations. The midship sections of various ship types are introduced, together with structural continuity and alignment in ship structures. With regard to construction materials, the book discusses steel, aluminum alloys and fiber reinforced composites. Various methods of steel material preparation are discussed, and plate cutting and forming of plates and sections are explained. The concept of line heating for plate bending is introduced.Welding power source characteristics, metal transfer mechanisms, welding parameters and their effects on the fusion zone, weld deposit, and weld bead profile are discussed in detail. Various fusion welding methods, MMAW, GMAW, SAW, Electroslag welding and Electrogas welding and single side welding are explained in detail. Friction stir welding as one of the key methods of solid state welding as applied to aluminum alloys is also addressed. The mechanisms of residual stress formation and distortion are explained in connection with stiffened panel fabrication, with an emphasis on weld induced buckling of thin panels. Further, the basic principles of distortion prevention, in-process distortion control and mitigation techniques like heat sinking, thermo-mechanical tensioning etc. are dealt with in detail. In its final section, the book describes in detail various types of weld defects that are likely to occur, together with their causes and remedial measures. The nondestructive testing methods that are most relevant to ship construction are explained. Lastly, a chapter on accuracy control based on statistical principles is included, addressing the need for a suitable mechanism to gauge the ranges of variations so that one can quantitatively target the end product accuracy.

The Metals Black Book

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ISBN 13 :
Total Pages : 768 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis The Metals Black Book by :

Download or read book The Metals Black Book written by and published by . This book was released on 1998 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Geology of Ore Deposits

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Publisher : Waveland Press
ISBN 13 : 1478608870
Total Pages : 1000 pages
Book Rating : 4.4/5 (786 download)

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Book Synopsis The Geology of Ore Deposits by : John M. Guilbert

Download or read book The Geology of Ore Deposits written by John M. Guilbert and published by Waveland Press. This book was released on 2007-02-09 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern civilizations dependence upon an increasing volume and diversity of minerals makes the search for new ore deposits ever more difficult. Now available from Waveland Press, Guilbert & Parks text presents ideas, principles, and data fundamental for beginning economic geologists to understand the genesis and localization of ore deposits and of the minerals associated with them. The authors comprehensively describe the physical and chemical characteristics of ore deposits and correlate them with environments and conditions of deposition, since ore deposits are best interpreted as extensions of the environments responsible for their enclosing rocks. Examples and illustrations emphasize structural, chemical, and temporal controls and encourage the three-dimensional thinking used by productive explorationists as they face unsolved problems. This upper-level undergraduate text is fully illustrated and meticulously indexed. Its reliable, authoritative coverage assumes an upper-level command of chemistry and physics, as well as mineralogy, petrology, and structural geology. Outstanding features . . . develops and combines the abilities of the explorationist and of the researcher of ore-forming processes structures the geologic descriptions into groupings recognized by researchers and explorers alike builds confidence, revitalizes curiosity, and encourages expanded thinking emphasizes that the days of easy discovery of outcropping ores are not over includes revised, expanded, and updated descriptions of districts

Host Bibliographic Record for Boundwith Item Barcode 30112087465842 and Others

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ISBN 13 :
Total Pages : 786 pages
Book Rating : 4.:/5 (31 download)

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Download or read book Host Bibliographic Record for Boundwith Item Barcode 30112087465842 and Others written by and published by . This book was released on 2013 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:

ASM Specialty Handbook

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Publisher : ASM International
ISBN 13 : 9780871705648
Total Pages : 514 pages
Book Rating : 4.7/5 (56 download)

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Book Synopsis ASM Specialty Handbook by : Joseph R. Davis

Download or read book ASM Specialty Handbook written by Joseph R. Davis and published by ASM International. This book was released on 1996-01-01 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cast iron offers the design engineer a low-cost, high-strength material that can be easily cast into a wide variety of useful, and sometimes complex, shapes. This handbook from ASM covers the entire spectrum of one of the most widely used and versatile of all metals.

Technology and War

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Publisher : Simon and Schuster
ISBN 13 : 1439143978
Total Pages : 360 pages
Book Rating : 4.4/5 (391 download)

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Book Synopsis Technology and War by : Martin Van Creveld

Download or read book Technology and War written by Martin Van Creveld and published by Simon and Schuster. This book was released on 2010-05-11 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this impressive work, van Creveld considers man's use of technology over the past 4,000 years and its impact on military organization, weaponary, logistics, intelligence, communications, transportation, and command. This revised paperback edition has been updated to include an account of the range of technology in the recent Gulf War.

Toxicological Profile for Zinc

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ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.3/5 (91 download)

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Download or read book Toxicological Profile for Zinc written by and published by . This book was released on 1994 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Glosario de la industria petrolera ...

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ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.A/5 ( download)

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Download or read book Glosario de la industria petrolera ... written by and published by . This book was released on 1973 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: