Relevant bibliographies by topics / Electrical steel manufacturing process / Dissertations / Theses
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Dissertations / Theses on the topic 'Electrical steel manufacturing process'

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Published: 4 June 2021
Last updated: 5 February 2022

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1

Xu, Ye. "Kilowatt Three-phase Rotary Transformer Design for Permanent Magnet DC Motor with On-rotor Drive System." Thesis, Mittuniversitetet, Avdelningen för elektronikkonstruktion, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-27781.

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The aim of this thesis is to design a kilowatt three-phase step-down rotary transformer for a permanent magnet DC motor. The permanent magnet DC motor has an on-rotor drive system, and therefore requiring a power supply that can transfer power to its drive unit without mechanical contact. The rotary transformer has a detached magnetic coupling structure that qualifies it as a potential method for the wireless power transfer. This thesis studies the rotary transformer as a static device, focusing on its core loss. By using a transient finite element analysis of COMSOL Multiphysics and an iron l
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Han, Tianyang. "Ultrasonic Additive Manufacturing of Steel: Process, Modeling, andCharacterization." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1607039366940573.

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3

Matar, Hattan Saleh. "Evaluating dust exposure from steel manufacturing electrical arc furnaces." Online version, 2009. http://www.uwstout.edu/lib/thesis/2009/2009matarh.pdf.

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4

Medrow, David (David Robert) 1968. "Cost modeling of a manufacturing process." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9986.

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Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management; and, Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.<br>Includes bibliographical references (leaf 45).<br>by David Medrow.<br>M.S.
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Okonkwo, Christopher Ndubuisi. "Electricity Reform| The Case of Sourcing and Cost Management in Steel Manufacturing." Thesis, Walden University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10244881.

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<p>In 2014, Lazard levelized cost of energy analysis model priced diesel powered systems at $0.225 ? $0.404/KWh and a range of $0.165 ? $0.242/KWh for gas-powered systems. The model gave a range of $0.28 ? $0.33/kWh for diesel and a range of $0.14/kWh ? $0.16/kW for gas fired. Nigeria has an abundance of gas reserves, but heavy gas flaring by oil companies perpetuates power failure across Nigeria. What has resulted is an unreliable electricity infrastructure and a high cost of alternative energy. The Electricity Power Sector Reform Act of 2005 started the reform process. Guided by decision the
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Persson, George. "Process development for H13 tool steel powder in binder jet process." Thesis, Högskolan i Gävle, Maskinteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-32694.

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Additive manufacturing brings versatility and new degree of freedom for part design and manufacturing possibilities. Binder jetting is powder bed printing technique that does not require direct energy transfer rather binding powder metal particles through mechanical entanglement by use of the organic binder. The polymer chains in the solution hardens when heated thus creating a green part. Green parts are sintered in high temperature to adhere metal powder particles together creating a solid body. Binder jetting still developing to its full potential in scalability and material portfolio. This
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7

Mahmood, Tariq. "Knowledge-based process planning and design system for the cold forging of steel." Thesis, Imperial College London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264352.

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8

Emanuelsson, Linus, and Erik Folker. "Value stream mapping of the grinding process in the manufacturing of steel products." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-143868.

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Till följd av en långvarig nedåtgående trend för den europeiska stålindustrin har stålbolagens behov av en effektiv logistik, med därtill kopplade kostnadsbesparingar, ökat. För att kunna förbättra sin interna logistik krävs att företag kan planera sin produktion väl samtidigt som resurser utnyttjas så effektivt som möjligt, med minimalt slöseri. I syfte att identifiera en koppling mellan produktegenskaper och bearbetningstid och därmed skapa ett underlag för bättre produktionsplanering och framtida processförändringar, genomförs en värdeflödeskartläggning för slipavdelningen hos Stål AB i Nor
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9

Amar, Ajay 1964. "Reduction of process monitoring in semiconductor chip manufacturing." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9742.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.<br>Includes bibliographical references (leaf 40).<br>This thesis concerns in-line inspection scheduling policies in semiconductor chip manufacturing. Intel uses extensive monitoring (inspections) in the manufacturing process. While the inspections help safeguard process stability and boost manufacturing yield, they also account for a substantial fraction of the company's variable manufacturing costs. I
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10

Mammen, Siju Abraham. "Techno–economic investigation into nuclear centred steel manufacturing / Mammen, S.A." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7054.

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With the rising electricity, raw material and fossil fuel prices, as well as the relatively low selling price of steel, the steel industry has been put under strain to produce steel as cost–effectively as possible. Ideally the industry requires a cost–effective, stable source of energy to cater for its electricity and energy needs. Modern High Temperature Reactors are in a position to provide industries with not only electricity, but also process heat. Therefore, a study was conducted into the economic viability of centering the steel industry on nuclear power. This study considered 3 technolo
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11

Siddique, Mohammad. "A knowledge-based system for process planning in a seamless steel tube plant." Thesis, Aston University, 1990. http://publications.aston.ac.uk/11889/.

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The thesis describes the work carried out to develop a prototype knowledge-based system 'KBS-SETUPP' to generate process plans for the manufacture of seamless tubes. The work is specifically related to a plant in which hollows are made from solid billets using a rotary piercing process and then reduced to required size and finished properties using the fixed plug cold drawing process. The thesis first discusses various methods of tube production in order to give a general background of tube manufacture. Then a review of the automation of the process planning function is presented in terms of i
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Meliane, Walid. "Applied time series analysis for forecasting process cycle times and process yields in the semiconductor manufacturing industry." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/10331.

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Complementary metal oxide semiconductor (CMOS) integrated circuits (ICs) are the dominant technology in the semiconductor industry. Meeting delivery date is important to ensure customer satisfaction and maintain momentum between manufacturing divisions. Two major concerns are to produce the right quantity of ICs in the expected period of time. Yield and cycle time are two critical parameters used to assess process performance. The main objectives of this work were to obtain reliable forecasts of yields and cycle times and to monitor the process for detection of upsets. We explored the use of t
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Johansson, Kenny. "Process and microstructure development of a LPBF produced maraging steel." Thesis, Karlstads universitet, Avdelningen för maskin- och materialteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-79004.

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Additive manufacturing (AM) has the possibility of producing complex-shaped components which can not be produced by conventional manufacturing methods. This gives the opportunity for designers to freely think outside the design spectra which is otherwise limited by conventional manufacturing methods. AM of metal has rapidly been developed for the last three decades, and they now are reaching industrial acceptance levels, metal feedstock for use in AM is also rapidly growing. AM of metals is especially of interest for the tooling industry. The design freedom which AM offers the tooling manufact
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Strusevich, Nadezhda. "Numerical modelling of electrodeposition process for printed circuit boards manufacturing." Thesis, University of Greenwich, 2013. http://gala.gre.ac.uk/10214/.

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Printed circuit boards (PCBs) are used extensively in electronic products to connect assembled components within a system. The so-called vertical interconnect access (via) is a vertical hole or cavity in the PCB filled with metal to facilitate conductivity. The current trend, particularly for high technology products (e.g., 3D packaging), is to manufacture PCBs with high aspect ratio (AR) vias. Typically, the size of such a via is at the micrometer scale (this is why they are termed micro-vias). The most widely used technique for manufacturing micro-vias is electrodeposition of metal (e.g., co
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Åkefeldt, Jon. "Optimization of laser welding process : Hermetical weld between a medium carbon steel and a low carbon steel shim." Thesis, Karlstads universitet, Avdelningen för maskin- och materialteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-62619.

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Shirley, Kevin Alexander. "Toward a Production Ready FBJ Process for Joining Dissimilar Combinations of GADP 1180 Steel and AA 7085-T76." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6694.

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Friction Bit Joining (FBJ) is a new technology that can be used to join dissimilar materials together. This ability makes it a good candidate for creating light weight structures for the automotive industry by combining lightweight materials such as aluminum to stronger materials like advanced high-strength steels. The automotive industry and many other industries have great interest in reducing structure weight to increase fuel efficiency. The purpose of this research is to make FBJ of GADP 1180 to AA 7085-T76 a production ready process by (1) better understanding the effects of process param
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17

MacDonald, Francis J. (Francis Joseph). "An integrative approach to process parameter selection in fused-silica capillary manufacturing." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/12817.

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Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1992 and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1992.<br>Includes bibliographical references (leaf 110).<br>by Francis J. MacDonald, Jr.<br>M.S.
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邦浩, 千田, та Kunihiro Senda. "電磁鋼板の局所領域磁気特性および加工劣化に関する研究". Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12981856/?lang=0, 2016. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12981856/?lang=0.

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電磁応用機器の特性向上に繋がる基礎的知見を得ることを目的とし，電磁鋼板および鉄心内部の局所的な磁気特性の分布に着目した研究を行った。方向性電磁鋼板については，鋼板内部の局所領域の磁気特性の測定手法を開発し，磁気特性の不均一分布の原因を解明した。無方向性電磁鋼板においては，打抜き，カシメ，応力といった鉄心製造に関わる因子の影響を評価し，鉄心での磁気特性劣化の機構を明らかにした。<br>博士(工学)<br>Doctor of Philosophy in Engineering<br>同志社大学<br>Doshisha University
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Bourchas, Konstantinos. "Manufacturing Effects on Iron Losses in Electrical Machines." Thesis, KTH, Elektrisk energiomvandling, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-172373.

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In this master thesis, the magnetic properties of SiFe laminations after cutting and welding are studied. The permeability and the iron loss density are investigated since they are critical characteristics for the performance of electrical machines. The magnetic measurements are conducted on an Epstein frame for sinusoidal variations of the magnetic ux density at frequencies of 50, 100 and 200 Hz, according to IEC 404-2. Mechanical cutting with guillotine and cutting by means of ber and CO2 laser are performed. The inuence of the ber laser settings is also investigated. Especially the assistin
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Graser, Ferdl Wolfgang. "A reproducible design and manufacturing process for SQUID magnetometers." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/1865.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2005.<br>A process was developed to design and manufacture a dc SQUID magnetometer. Superconductor theory is given as a foundation to explain the Josephson junction. This knowledge is applied to explain the ideal and practical dc SQUID. The design of the dc SQUID is done with inductance calculation formulas. Each step of the manufacturing process is discussed in detail. Many improvements have been made to the process to make each step reproducible. The steps in the manufacturing process that were done in-
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Swartz, Paul. "Evaluation of Tensile Properties for Selective Laser Melted 316L Stainless Steel and the Influence of Inherent Process Features." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2024.

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Optimal print parameters for additively manufacturing 316L stainless steel using selective laser melting (SLM) at Cal Poly had previously been identified. In order to further support the viability of the current settings, tensile material characteristics were needed. Furthermore, reliable performance of the as-printed material had to be demonstrated. Any influence on the static performance of parts in the as-printed condition inherent to the SLM manufacturing process itself needed to be identified. Tensile testing was conducted to determine the properties of material in the as-printed conditio
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22

Ericsson, Ola. "An Experimental Study of Liquid Steel Sampling." Licentiate thesis, Stockholm : Skolan för industriell teknik och management, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10518.

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23

Roos, Stefan. "Process Development for Electron Beam Melting of 316LN Stainless Steel." Licentiate thesis, Mittuniversitetet, Institutionen för kvalitets- och maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-37840.

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Additive manufacturing (AM) is a technology that inverts the procedure of traditional machining. Instead of starting with a billet of material and removing unwanted parts, the AM manufacturing process starts with an empty workspace and proceeds to fill this workspace with material where it is desired, often in a layer-by-layer fashion. Materials available for AM processing include polymers, concrete, metals, ceramics, paper, photopolymers, and resins. This thesis is concerned with electron beam melting (EBM), which is a powder bed fusion technology that uses an electron beam to selectively mel
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Espindle, L. P. (Leo P. ). "Process management principles for increasing the energy efficiency of manufacturing operations." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66070.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; in conjunction with the Leaders for Manufacturing Program at MIT, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 81-84).<br>Energy usage is a significant operating cost for manufacturing facilities in the United States, and interest in energy management has been rising of late, 2, 3]. One approach, recommended by the Environmental Protection Agency (EPA), is to pig
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Okonkwo, Christopher Ndubuisi. "Electricity Sector Reform: Sourcing and Cost Management of Electricity for Steel Manufacturing in Nigeria." ScholarWorks, 2016. https://scholarworks.waldenu.edu/dissertations/3056.

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In 2014, Lazard levelized cost of energy analysis model priced diesel powered systems at $0.225 – $0.404/KWh and a range of $0.165 – $0.242/KWh for gas-powered systems. The model gave a range of $0.28 – $0.33/kWh for diesel and a range of $0.14/kWh – $0.16/kW for gas fired. Nigeria has an abundance of gas reserves, but heavy gas flaring by oil companies perpetuates power failure across Nigeria. What has resulted is an unreliable electricity infrastructure and a high cost of alternative energy. The Electricity Power Sector Reform Act of 2005 started the reform process. Guided by decision theory,
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Hahne, William. "Optimization of laser powder bed fusion process parameters for 316L stainless steel." Thesis, Uppsala universitet, Oorganisk kemi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-448263.

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The interest for additive manufacturing techniques have in recent years increased considerably because of their association to good printing resolution, unique design possibilities and microstructure. In this master project, 316L stainless steel was printed using metal laser powder bed fusion in an attempt to find process parameters which yield good productivity while maintaining as good material properties as possible. Laser powder bed fusion works by melting a powder bed locally with a laser. When one slice of the material is done, the powder bed is lowered, new powder is added on top, and t
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Tudero, Aitor, and Julen Azkue. "Emulation of a manufacturing process : Focusing on maintenance and operator training." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-14032.

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Having well-trained operators is a crucial need for Volvo Group Truck Operations (GTO). Mistakes from the factory staff may cause the production line to stop, and lead to economic losses. For this reason, Volvo GTO has decided to investigate the possibility of creating an emulation model from the production line and using it to train operators and maintenance personnel. The aim of this thesis is to develop an Operator Training Station (OTS) for the OP035 of the Volvo GTO Production Line 6. In the first part, a literature research was conducted, from which the authors gained insight into relate
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McCaghren, Neville G. (Neville Gregory). "Enabling process improvements through visual performance indicators." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/34848.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; in conjunction with the Leaders for Manufacturing Program at MIT, 2005.<br>Includes bibliographical references (leaves 73-74).<br>Most modern production processes automatically generate volumes of rich data, including equipment states, material presentations, labor content, and quality non- conformances. Unfortunately, much of this data is either discarded immediately, or stored in its raw form in disparate
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Björklund, Johan. "A study of slag-steel-inclusion interaction during Ladle treatment." Licentiate thesis, KTH, Materials Science and Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4018.

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<p>The thesis is based on two supplements with two major objectives. In the first supplement equilibrium top slag-steel bulk and inclusions-steel bulk were investigated by comparison between calculated and measured oxygen activity values. This was done by applying different oxide activity models for slags combined with thermodynamic calculations. In the second supplement the inclusion composition is studied during the ladle refining process. The inclusion composition is related to top slag composition and other parameters during ladle</p><p>treatment.</p><p>The work was carried out by collecti
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Schoerner, Daniel (Daniel Richard). "Developing a process for supply chain risk management." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/50093.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; in conjunction with the Leaders for Manufacturing Program at MIT, 2009.<br>Includes bibliographical references (p. 65).<br>In today's competitive markets, companies look for any advantage they can build over their competitors. A number of companies recognize that supply chain excellence is an opportunity to create such an advantage. A superior supply chain provides manufacturing flexibility, fast on-time de
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Regele, Oliver Brian. "Applied discrete event simulation for root cause analysis and evaluation of corrective process change Efficacy within vaccine manufacturing." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/126896.

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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, May, 2020<br>Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, May, 2020<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 137-141).<br>Digital Transformation of the Biopharmaceutical industry is enabling improved operations through smart manufacturing. One area of interest is the application of advanced data analytics techniques to supplement traditional workflows. The focus of this research was developing a
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Wikström, Jenny. "A Mathematical and Experimental Study of Inclusion Behaviour at a Steel-Slag Interface." Doctoral thesis, KTH, Materialvetenskap, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4574.

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The aim of this thesis work is to increase the knowledge of inclusion behavior at the steel-slag interface by mathematical modeling and in-situ Confocal Scanning Laser Microscope experiments. Mathematical models based on the equation of motion predicting liquid and solid inclusion behavior was first investigated. Four main forces, the buoyancy force, the added mass force, the rebound force and the drag force, act on the inclusion as it crosses the interface. There are three types of behavior an inclusion at the steel-slag interface can adopt. These are a) pass, which means that the inclusion i
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33

Alavi, Farshid. "Optimization of Process Parameters in Micro Electrical Discharge Machining (EDM) of TI-6AL-4V Alloy." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1568.

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Ti-6Al-4V has a wide range of applications such as in the automotive and aerospace industries. Nevertheless, titanium alloys are very difficult to machine by conventional methods. Micro-EDM is a non-conventional machining method that uses the thermal effect of precisely controlled sparks. Manufacturers are looking for the methods and optimal settings to increase the productivity of micro-EDM in terms of lessening machining time and tool wear. Moreover, surface integrity of the machined area is crucial for some products such as biomedical implants. The objective of this study was to investigate
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Hansen, Steven Richard. "Vaporizing Foil Actuator Process Parameters: Input Characteristics, Energy Deposition, and Pressure Output." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1514997723443633.

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Blaha, Dwight Allen 1971. "Designing a strategic sourcing process for low volume, high technology products." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/34720.

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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science; in conjunction with the Leaders for Manufacturing Program at MIT, 2002.<br>Includes bibliographical references (p. 84-85).<br>Axcelis Technologies, Inc. is a capital equipment manufacturer for the semiconductor industry. The semiconductor industry is evidenced by a volatile business cycle that follows the traditional bullwhip effect - that is, companies further up the supply chain see greater demand variabi
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Krings, Andreas. "Iron Losses in Electrical Machines - Influence of Material Properties, Manufacturing Processes, and Inverter Operation." Doctoral thesis, KTH, Elektrisk energiomvandling, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-145243.

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As the major electricity consumer, electrical machines play a key role for global energy savings. Machine manufacturers put considerable efforts into the development of more efficient electrical machines for loss reduction and higher power density achievements. A consolidated knowledge of the occurring losses in electrical machines is a basic requirement for efficiency improvements. This thesis deals with iron losses in electrical machines. The major focus is on the influences of the stator core magnetic material due to the machine manufacturing process, temperature influences, and the impact
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George, Jonathan Alan. "Development of a Plasma Arc Manufacturing Process and Machine to Create Metal Oxide Particles in Water From Wire Feedstock." Diss., CLICK HERE for online access, 2010. http://contentdm.lib.byu.edu/ETD/image/etd3494.pdf.

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Gante, Lokesha Renukaradhya Karthikesh. "Metal Filament 3D Printing of SS316L : Focusing on the printing process." Thesis, KTH, Maskinkonstruktion (Avd.), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259686.

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As a cutting edge manufacturing methodology, 3D printing or additive manufacturing (AM) brings much more attention to the fabrication of complex structure, especially in the manufacturing of metal parts.A number of various metal AM techniques have been studied and commercialized. However, most of them are expensive and less available, in comparison with Selective Laser Melting manufactured stainless steel 316L component.The purpose of this Master Thesis is to introduce an innovative AM technique which focuses on material extrusion-based 3D printing process for creating a Stainless Steel 316L p
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Mostafaee, Saman. "A Study of EAF Austenitic and Duplex Stainless Steelmaking Slags Characteristics." Licentiate thesis, KTH, Materials Science and Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12064.

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<p>The high temperature microstructure of the solid phases within the electric arc furnace (EAF) slag has a large effect on the process features such as foamability of the slag, chromium recovery, consumption of the ferroalloys and the wear rate of the refractory. The knowledge of the microstructural and compositional evolution of the slag phases during the EAF process stages is necessary for a good slag praxis.</p><p>In <strong>supplement 1</strong>, an investigation of the typical characteristics of EAF slags in the production of the AISI 304L stainless steel was carried out. In addition, co
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Westin, Elin M. "Microstructure and properties of welds in the lean duplex stainless steel LDX 2101." Doctoral thesis, KTH, Metallografi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-27387.

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Duplex stainless steels can be very attractive alternatives to austenitic grades due to their almost double strength at equal pitting corrosion resistance. When welding, the duplex alloys normally require addition of filler metal, while the commodity austenitic grades can often be welded autogenously. Over-alloyed consumables are used to counteract segregation of important alloying elements and to balance the two phases, ferrite and austenite, in the duplex weld metal. This work focuses on the weldability of the recently-developed lean duplex stainless steel LDX 2101® (EN 1.4162, UNS S32101).
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Pelacani, Júnior José Martinho. "Desenvolvimento do forjamento a morno de um componente mecânico com extrusão reversa e direta." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264441.

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Orientador: Sérgio Tonini Button<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-16T12:21:01Z (GMT). No. of bitstreams: 1 PelacaniJunior_JoseMartinho_M.pdf: 2100152 bytes, checksum: 02d47dfc2504a38fb6ef5695fff57190 (MD5) Previous issue date: 2010<br>Resumo: Sendo o forjamento amplamente empregado para manufatura de componentes automotivos, este trabalho foi dedicado ao desenvolvimento, por meio de simulação numérica, do projeto para forjamento a morno de um produto denominado monobloco. Esta peça possui a
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Hřebíček, Robert. "Výroba držáku mobilního telefonu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318774.

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The master´s thesis is focused on the manufacture of mobile phone holder. The semi-finished productis a 1.5 mm thick steel sheetroll of S235JRG1. The annual seriesis set at 200,000 units per year. For the production of the part, the method of shearing and bending in a combined tool was chosen. Both technologies were dissected in a literary study, and a production process was developed to design a tool. A suitable production line was purchased for the entire production and the suitability of production was economicallye valuated.
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Björklund, Johan. "Thermodynamic Aspects on Inclusion Composition and Oxygen Activity during Ladle Treatment." Doctoral thesis, KTH, Tillämpad processmetallurgi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4673.

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Two industrial studies and one set of lab scale trials have been done. In addition, a theoretical study has been done. The main focus has been on non metallic inclusion composition during the ladle refining operation in industrial steel production. Sampling has been done together with careful inclusion determination. The inclusion composition is related to different variables. In the industrial trials samples have been taken at different steps during the ladle refining period. Steel and slag composition as well as temperature and oxygen activity have been determined. The thesis is based on fiv
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Birkett, Martin. "Optimisation of the performance characteristics of Cu-Al-Mo thin film resistors." Thesis, Northumbria University, 2009. http://nrl.northumbria.ac.uk/2013/.

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This thesis presents a novel approach to the manufacture of thin film resistors using a new low resistivity material of copper, aluminium and molybdenum, which under industrially achievable optimised process conditions, is shown to be capable of producing excellent temperature coefficient of resistance (TCR) and long term stability properties. Previous developments in the field of thin film resistors have mainly centred around the well established resistive materials such as nickel-chromium, tantalum-nitride and chromium-silicon-monoxide. However recent market demands for lower value resistors
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Mays, Kenneth W. "A 40 GHz Power Amplifier Using a Low Cost High Volume 0.15 um Optical Lithography pHEMT Process." PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/552.

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The demand for higher frequency applications is largely driven by bandwidth. The evolution of circuits in the microwave and millimeter frequency ranges always demands higher performance and lower cost as the technology and specification requirements evolve. Thus the development of new processes addressing higher frequencies and bandwidth requirements is essential to the growth of any semiconductor company participating in these markets. There exist processes which can perform in the higher frequency design space from a technical perspective. However, a cost effective solution must complement t
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Doubrava, Marek. "Mechanické vlastnosti materiálů připravovaných pomocí procesu SLM." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400835.

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The diploma thesis deals with the selection of process parameters used for manufacturing of high-strenth materials using SLM technology. The feedstock material was powder with a chemical composition according to standard DIN X3NiCoMoTi 18-9-5. Influence of change in process parameters on mechanical properties was examined by hardness tests and tensile tests. Metallographic and fractographic analysis were conducted with an aim to understand mechanisms of failure present in this type of material. Selection of optimal process parameters was based on the analysis of mechanical properties of manufa
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Lapa, Thaís de Souza. "Processo de trabalho, divisão sexual do trabalho e práticas sociais das operárias na indústria eletroeletrônica no contexto da flexibilidade produtiva." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/8/8132/tde-09062015-122236/.

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Os processos de flexibilidade produtiva com transformações tecnológicas e organizacionais nas empresas, que ocorrem no Brasil sob a égide da reestruturação produtiva capitalista desde 1980 e com maior ênfase em 1990, são observados neste estudo à luz da problemática da divisão sexual do trabalho, tomando como campo de análise o segmento de eletroeletrônicos, o qual possui a mais elevada proporção de mulheres da indústria metalúrgica. A pesquisa parte da problemática da visibilização de trabalhadoras como objeto de conhecimento nas análises sobre a classe trabalhadora, procurando oferecer contr
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Bourlet, Clément. "Développement de la fabrication additive par procédé arc-fil pour les aciers : caractérisation microstructurale et mécanique des dépôts en nuances ER100 et 316L pour la validation des propriétés d'emploi de pièces industrielles." Thesis, Paris, ENSAM, 2019. http://www.theses.fr/2019ENAM0058.

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L'arc-fil est un nouveau procédé de fabrication additive utilisant une cellule desoudage robotisée pour la fabrication, couche par couche, de pièces de grandes dimensions. Ilpermet de réaliser des ébauches de pièces unitaires ou de petites séries avec des coûts et desdélais de fabrication réduits. Les premiers développements se sont principalement orientés sur laréalisation de pièces à forte valeur ajoutée en alliage de titane et d’aluminium pour le secteuraéronautique et aérospatial, et intéressent maintenant d’autres secteurs tels que les industriesnavales, pétrolières, ferroviaires et mécan
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AKANI, MOHAMED. "Elaboration du silicium polycristallin par projection plasma : microstructure et proprietes electriques." Paris 6, 1986. http://www.theses.fr/1986PA066613.

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Obtention de rubans autosupportes ou supportes par differents substrats par projection plasma a partir de poudre de silicium. Optimisation du procede. Mesure des caracteristiques des rubans obtenus (porosite, densite, resistivite, mobilite de hall) avant et apres recuit, et apres recristallisation par bombardement electronique. Evolution des caracteristiques electriques avec le dopage. Mesure des proprietes photoelectroniques
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Boussetta, Hatem. "Étude et réalisation de transistors bipolaires à pseudo-hétérojonction dans le cadre d'une technologie microélectronique BiCMOS." Grenoble 1, 1995. http://www.theses.fr/1995GRE10024.

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Ce travail s'inscrit dans le cadre de l'etude de transistors bipolaires a bases epitaxiees fortement dopees realises dans la technologie bicmos du centre national d'etudes des telecommunications de meylan. Grace au fort dopage de la base, le fonctionnement de ces transistors se rapproche de celui des transistors bipolaires a heterojonctions ; pour cette raison on les nomme transistors bipolaires a pseudo heterojonction. Apres avoir presente la nouvelle structure emetteur-base et la technologie de fabrication bicmos, nous decrivons les techniques et les outils de caracterisation mis en jeu. Dan
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