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Author: Anders Schei
Publisher: Akademika Pub
ISBN: 9788251913171
Category : Technology & Engineering
Languages : en
Pages : 363
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Book Description
This book is intended for professionals working with all aspects of high silicon alloy production. It covers the basics of silicon processes regarding thermodynamic and reaction kinetics. Post-furnace processes such as refining and solidification are presented and there are also important contributions covering furnace design, energy use and environmental standards for silicon production.
Author: Anders Schei
Publisher: Akademika Pub
ISBN: 9788251913171
Category : Technology & Engineering
Languages : en
Pages : 363
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Book Description
This book is intended for professionals working with all aspects of high silicon alloy production. It covers the basics of silicon processes regarding thermodynamic and reaction kinetics. Post-furnace processes such as refining and solidification are presented and there are also important contributions covering furnace design, energy use and environmental standards for silicon production.
Author: I.I Barashkin
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
Author:
Publisher:
ISBN:
Category : Mineral industries
Languages : en
Pages : 18
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Book Description
Author: Francisco C. Robles Hernandez
Publisher: Springer
ISBN: 3319583808
Category : Technology & Engineering
Languages : en
Pages : 253
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Book Description
This book details aluminum alloys with special focus on the aluminum silicon (Al‐Si) systems – that are the most abundant alloys second only to steel. The authors include a description of the manufacturing principles, thermodynamics, and other main characteristics of Al‐Si alloys. Principles of processing, testing, and in particular applications in the Automotive, Aeronautical and Aerospace fields are addressed.
Author: Michael Gasik
Publisher: Butterworth-Heinemann
ISBN: 0080977669
Category : Technology & Engineering
Languages : en
Pages : 537
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Book Description
This handbook gathers, reviews and concisely presents the core principles and varied technology involved in processing ferroalloys. Background content in thermodynamics, kinetics, heat and mass transfer is accompanied by an overview of electrical furnaces theory and practice as well as sustainability issues. The work includes detailed coverage of the major technologies of ferrosilicon, ferronickel, ferromolybdenum, ferrotungsten, ferrovanadium, ferromanganese and lesser known minor ferroalloys. Distilling the results of many years' experience in ferroalloys, Michael Gasik has assembled contributions from the worlds' foremost experts. The work is therefore a unique source for scientists, engineers and university students, exploring in depth an area which is one of the most versatile and increasingly used fields within modern metallurgy. All-in-one source for the major ferroalloys and their metallurgical processing technologies, cutting research time otherwise spent digging through old handbooks or review articles. In-depth discussion of the C, Si, Al-reduction, groups II-VIII of the periodic table, supporting analysis of metallurgical processing. Contemporary coverage includes environment and energy saving issues.
Author: B.P Bhardwaj
Publisher: NIIR PROJECT CONSULTANCY SERVICES
ISBN: 9381039291
Category :
Languages : en
Pages : 440
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Book Description
The Complete Book on Ferroalloys (Ferro Manganese, Ferro Molybdenum, Ferro Niobium, Ferro Boron, Ferro Titanium, Ferro Tungsten, Ferro Silicon, Ferro Nickel, Ferro Chrome) An alloy is a mixture or solid solution composed of metals. Similarly, Ferroalloys are the mixture of Iron with high proportion of other elements like manganese, aluminium or silicon. Alloying improves the physical properties like density, reactivity, Youngs modulus, electrical and thermal conductivity etc. Ferroalloys thus show different properties as mixture of different metals in different proportion exhibit a wide range of properties. Also, Alloying is done to alter the mechanical properties of the base metal, to induce hardness, toughness, ductility etc. The main demand of ferroalloys, nowadays is continuously increasing as the major use of such products are in the field of civil construction; decorative items; automobile; steel industry; electronic appliances. The book provides a wide idea to readers about the usage of appropriate raw material and the treatment involved in the processing of raw material to final produce, safety, uses and properties of raw material involved in the processes. This book concisely presents the core principles and varied details involved in processing of ferroalloys. The work includes detailed coverage of the major products like ferroaluminium, ferrosilicon, ferronickel, ferromolybdenum, ferrotungsten, ferrovanadium, ferromanganese and lesser known minor ferroalloys. Progress in thermodynamics and physico-chemical factors in ferroalloy production has developed rapidly during the past twenty-five years or so. The book presents the principles and current knowledge of processes in the production of various ferroalloys. The production of a particular ferroalloy involves a number of processes to be followed in order to give the alloy desired physical and mechanical properties. The slight difference in the temperature or heating or composition can lead to entirely different alloy with different properties. This book is not only confined to the different processes followed in the production of ferroalloys but also describes the processes used and other information related to product, which are necessary for the manufacturers knowledge. Also, the book gives the reader appropriate knowledge regarding the selection the best of available raw materials. TAGS Book on Ferroalloys, Business consultancy, Business consultant, Business Plan for Ferroalloys manufacturing plant, Ferro Alloy Industries Consultant, Ferro alloy industry in India, Ferro Alloy Projects, Ferro alloys industry, Ferro alloys industry about Ferro alloys, Ferro alloys manufacturers, Ferro alloys manufacturing Process, Ferro alloys plant, Ferro Alloys Process, Ferro alloys Production Industry in India, Ferro alloys Production processes, Ferro alloys production technology, Ferro alloys uses, Ferro Alloys, Ferro Manganese, Ferro Molybdenum, Ferro Niobium, Ferro Boron, Ferro Titanium, Ferro Tungsten, Ferro Silicon, Ferro Nickel, Ferro Chrome, Ferroalloy production, Ferroalloys & Alloying Additives, Ferroalloys Based Projects, Ferroalloys Business Manufacturing, Ferroalloys manufacturing, Ferroalloys manufacturing Business, Ferroalloys production line, Ferroalloys Theory and Technology, Ferrous metals and ferroalloys processing, Great Opportunity for Startup, High Carbon Ferro Alloys, How to Start a Ferroalloys Production Business, How to start a successful Ferroalloys manufacturing business, How to Start Ferro alloys Production Industry in India, Ideas in Ferroalloys processing industry, Indian Ferro alloy industry, Indian Ferro alloy industry - present status and future outlook, Indian Ferro alloys industry: a review, Indian Ferro alloys producers, India's Ferro Alloys Industries, Industrial Project Report, Integrated Ferro Alloys, Manufacture in India of Ferroalloys used in alloy steel, Most Profitable Ferro alloys manufacturing Business Ideas, Niir, NPCS, On the role of ferroalloys in steelmaking, Pollution Control in Ferroalloy Production, Process technology books, Production of Ferro Boron, Production of Ferro Molybdenum, Production of Ferro Nickel, Production of Ferro Niobium, Production of Ferro Titanium, Production of Ferro Tungsten, Production of Ferroalloys, Production of Manganese Ferroalloys, Production Process of Ferro Chrome, Production Process of Ferro Silicon, Production Techniques of Ferroalloys, Profitable Ferroalloys manufacturing Industry, Project consultancy, Project consultant, Proposed Ferro Alloys & Integrated Steel Plant, Setting up and opening your Ferroalloys Business, Starting a Ferroalloys manufacturing Process Business, Technology of Ferro Alloys Making, Technology used in Ferro Alloys plant, What are Ferroalloys?, What are the uses of Ferro alloys and how they are used?
Author: Faraj D. F. Alshmri
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Aluminium silicon alloys are the most used raw material for automotive applications. One of the main limitations on using aluminium high silicon alloys is the formation of coarse brittle phases under conventional solidification conditions. However, rapid solidification processing (RS) is very effective in limiting the coarsening of primary silicon due to high cooling rate. Aluminium high silicon alloys can be processed by different RS methods. However, melt spinning is the most familiar of all RS commercial methods. Rapid solidification is a material production route. It does not give the final shape. Rapidly solidified materials require consolidation after solidification. Moreover, consolidation requires mechanical and/or thermal treatment. These treatments may degrade the microstructure. Also hot extrusion may be used as a final step, which may cause deterioration of the initially useful properties due to hot working. In general, although rapid solidification may suppress the coarsening of Si during solidification, the Si particulates may still coarsen during the subsequent thermo-mechanical treatment due to heat effect during consolidation and extrusion. In the present work characterisation of the material at various stages of production has been carried out and understanding of the metallurgical phenomena involved. Several alloy variants were examined. Coarsening behaviour of the Silicon particles and hardness tests were carried out. Wear properties of the alloys have been studied under dry sliding conditions against a steel ball bearing. Analyses and observation of the wear surfaces and wear mechanisms of these alloys are discussed. Wear of RS materials was compared with piston material A390 made by casting. Degassing and HIPping at 400 °C for 12 hrs prior to HIPping seems to be the optimum the degassing is effective whilst avoiding excessive coarsening of the silicon particles. Alloy number RSP461 (Al 21Si 3.9Cu 1.2Mg 2.4Fe 1.4Ni 0.4Zr) shows excellent wear resistance due to its fine microstructure.
Author: Bruno Ceccaroli
Publisher: CRC Press
ISBN: 1498742661
Category : Technology & Engineering
Languages : en
Pages : 273
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Book Description
Polycrystalline silicon (commonly called "polysilicon") is the material of choice for photovoltaic (PV) applications. Polysilicon is the purest synthetic material on the market, though its processing through gas purification and decomposition (commonly called "Siemens" process) carries high environmental risk. While many current optoelectronic applications require high purity, PV applications do not and therefore alternate processes and materials are being explored for PV grade silicon. Solar Silicon Processes: Technologies, Challenges, and Opportunities reviews current and potential future processing technologies for PV applications of solar silicon. It describes alternative processes and issues of material purity, cost, and environmental impact. It covers limits of silicon use with respect to high-efficiency solar cells and challenges arising from R&D activities. The book also defines purity requirements and purification processes of metallurgical grade silicon (MG-Si) and examines production of solar grade silicon by novel processes directly from MG-Si and/or by decomposition of silane gas in a fluidized bed reactor (FBR). Furthermore, the book: Analyzes past research and industrial development of low-cost silicon processes in view of understanding future trends in this field. Discusses challenges and probability of success of various solar silicon processes. Covers processes that are more environmentally sensitive. Describes limits of silicon use with respect to high-efficiency solar cells and challenges arising from R&D activities. Defines purity requirements and purification processes of MG-Si. Examines production of solar grade silicon directly from MG-Si.
Author: Xiao Li
Publisher:
ISBN:
Category : Aluminum-magnesium-silicon alloys
Languages : en
Pages : 346
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Book Description
Part I discusses the development of an aluminum-magnesium-silicon alloy that may combine strength, extrudability, favorable corrosion resistance with low cost and scrap compatibility. The first part of the study determined the effects of small composition, heat treatment and mechanical processing changes on the ambient temperature tensile properties of the alloy. A combination of magnesium and silicon of about 2%, 1% copper, 0.2% chromium and 0.1% vanadium can produce a T6 alloy with significant higher strength, fatigue and corrosion fatigue properties for both ingot and extrusion than those of 6061 but with only a modest increase in cost. The new alloy has been designated as AA6069. The second part of the study determined the T6 properties of 6069 alloy. The tensile test results of cold and hot extrusions of hollow, solid bars, and high pressure cylinders indicate that the T6 properties ranged from 55-70 ksi (380-490 MPa) UTS, 50-65 ksi (345-450 MPa) yield strength, and 10-18% elongation. It also appears that the fracture toughness and general corrosion resistance in saline environment are comparable or better than those of 6061 T6. Part II attempted to evaluate the formation, formability, thermal and mechanical properties of semi-solid A356, A357 and modified aluminum silicon semi-solid alloys. The semi-solid alloy microstructure was produced in this study by purely thermal treatment rather than conventional and expensive electromagnetic or mechanical stirring. Three heat-up stages in semi-solid treatment were evaluated. Stage I is related to the heating of the alloy in the solid state. Stage II is related to the eutectic reaction. Stage III is related to the heating of the semi-solid slurry. Stage II requires the longest time of the three heat-up stages due to the endothermic reaction on heating. An increase of furnace temperature can greatly reduce the time of stage II. The atmosphere (vacuum, air, argon) of the semi-solid treatment does not appear to greatly affect the T6 properties of semi-solid alloys. The microstructure and T6 properties of semi-solid A356 do not appear sensitive to the homogenization treatments before semi-solid treatment. The porosity of semi-solid ingots and pressed parts increases as the cooling rate decreases in unformed and subsequent-to-moderate pressure forming. The T6 properties basically appear sensitive to voids, with a degradation of properties as the void concentration increases. The formability of A357 may be improved as the spheroidal particle size decreases. Hence, formability may improve with decreasing ingot grain size. The mechanism of coarsening of the solid phase at isothermal temperatures is related to Ostwald ripening and/or "merging" of particles. The mechanical properties of die-casting parts show that the method of thermal treatment to produce a spheroidal microstructure is an effective method for industrial production of semi-solid aluminum-silicon alloys.
Author: Merete Tangstad
Publisher: Elsevier Inc. Chapters
ISBN: 0128054999
Category : Technology & Engineering
Languages : en
Pages : 54
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Book Description
This chapter examines the theory and technology of the production of silicon and ferrosilicon alloys. An overview of silica raw materials, silica transformations, and carbon reductants for smelting is presented together with an exploration of the thermodynamics of silicon reduction and the formation of silicon carbide. For industrial practice, the results of furnace operation and zones formation are discussed, along with the main parameters required to ensure a smooth furnace operation. Finally, post–tap hole processes (refining and casting) and environmental issues (fumes and dust formation and handling) are described.
