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Preparação E Caracterização Das Propriedades De Tijolos De Solo-cimento
By Elcio Correia de Souza Tavares
No estado do RN o êxodo da população residente na zona rural para a zona urbana ocorre de forma ainda acentuada, tendo como agravante o ciclo de secas periódicas. Outro problema do estado é a desertif
Aug 8, 2018
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Caracterização Da Lama De Alto-forno De Uma Siderúrgica Integrada Do Sudeste Do Pará
By Verônica Scarpini Candido
O Alto-Forno é o principal equipamento em uso para a produção do ferro gusa. Para a redução do minério de ferro em gusa são alimentados pelo topo do alto forno a carga composta por minério de ferro, c
Oct 30, 2017
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Modernização E Melhoria Do Sistema De Servomotores Para Válvulas Parcializadoras De Turbinas A Vapor
By Jonas Pedro Caumor
As válvulas parcializadoras funcionam distribuindo a vazão de vapor em uma turbina de maneira uniforme e o mais próximo possível de uma atuação linear. Esta vazão depende da área de passagem que por s
Jul 31, 2018
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Development And Analysis Of Feedstocks To Improve Injection For Surgical Instruments
By Diego Pacheco Wermuth
Micrometric surgical components typically have high geometric complexity and stringent regulatory specifications. These components need to have excellent mechanical properties and a high demand of pro
Aug 16, 2017
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Dry Sliding Wear Of Ca-6nm Stainless Steel With Relatively Low Surface Roughness
By Giuseppe Pintaude
This study aims to evaluate the effect of specimen preparation on the dry sliding wear behavior of CA-6 NM stainless steel. Two different surface finishing manufacturing processes were applied: lappin
Jul 31, 2018
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HOT ROLLING STRATEGIES TO MODULATE Nb INTERACTION WITH MICROSTRUCTURE IN FLAT PRODUCTS
By Marcelo Rebellato, Beatriz Pereda, Beatriz Lopez, Pello Uranga
The classical application of Nb microalloying in the development of thermomechanical processes for flat products has been related to its suitability to enhance strain-induced precipitation and get a p
Oct 1, 2019
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Stockhouse–based Drying And Pre–heating Of Coke And Pellets
By Roman Vaynshteyn
In places where Blast Furnaces are usually located, climatic factors may be unfavorable. Raw materials may be exposed to e.g. rain during transport/storage, bringing moisture into the process with con
Aug 16, 2017
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Prevention Of Contact Fatigue Damage Occurrence In Reversing Roughing Mills
By Mario SINNAEVE, Olivier LEMAIRE, Gisèle WALMAG, Sébastien FLAMENT
Many hot rolling mills worldwide face nowadays bonding zone fatigue problems before reaching scrap diameter of the work rolls. This phenomenon is nowadays known to occur in reversing roughing mills bo
Oct 1, 2019
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On The Use Of Pressure-sensitive Criteria To Predict Yielding And Multiaxial Fatigue Damage In Metallic Structures
By Marco Antonio Meggiolaro
Most cyclic plasticity models used in multiaxial fatigue life predictions are based on a concept of a yield surface, which divides the elastic and plastic domains. Plastic straining occurs when the st
Aug 8, 2018
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Mineral Liberation Evolution After Different Degrees Of Comminution On Itabirites
By Rodrigo Fina Ferreira
This paper presents a mineral liberation study on two iron ore samples from the Quadrilátero Ferrífero, in Brazil: compact itabirite of low-grade metamorphism (CI) and friable itabirite of high-grade
Aug 1, 2018
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Caracterização Magnética De Rejeitos De Mineração De Ferro
By Ramon Valls Martin
A obtenção das propriedades magnéticas do rejeito do processamento do minério de ferro auxilia na determinação da viabilidade da recuperação do ferro residual. Também permite a otimização dos parâmetr
Aug 16, 2017
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Medição De Planicidade Sem Contato
By José Claudio Blanco
A medição de Planicidade sem contato (contactless) para Laminadores a Frio é efetuada com o sistema conhecido como SIFLAT. Os sensores utilizam tecnologia eddy current como medição precisa de amplitud
Aug 16, 2017
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Manutenção De Locomotivas - Track Service
By Gustavo Elói de Sá Lima
A estratégia de manutenção de locomotivas da VLI sofreu significativa modificação após a implementação de propostas de consultores americanos, baseadas principalmente, na execução de atividades fora d
Oct 30, 2017
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Evolution Of Skin Pass Rolling
By Karl Berger, Roman Schneeweis, Dietrich Mathweis
With increasing demands from customers to provide flat strip with tighter tolerances on material properties, particularly flatness of e.g. martensitic steel grades (M1500), it has become necessary to
Oct 1, 2019
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Digital Twin For Continuous Casters – The Playground For Metallurgists And Process Engineers
By Gabriel Andrade Medeiros, Christian Brugger, Paul Pennerstorfer, Daniel Fuchshuber, Reinhold Leitnerl
State-of-the-art automation technology enables digitalization of the continuous casting process that goes far beyond conventional automation of industrial production. Primetals Technologies provides a
Oct 1, 2019
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Analysis Front-end Curvature In The Finishing Stands Of A Hot Strip Mill
By Leonardo Camilo dos Reis, Edmilson Fernandes Dadomi, Claudio Silva de Paulo
In the hot strip mill production, one of the factors that may affect the productivity is the occurrence of failure due to the geometry of the strip at the exit of the rolling mill, because the tip of
Oct 2, 2019
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Study Of The Optimization Of The Use Of Lateritic Nickel Effluent As A Secondary Source Of Manganese By Ozone
By Jorge Alberto Soares Tenório, Denise Crocce Romano Espinosa, Beatriz Peralta Oruê
Manganese, a toxic mineral, related to manganism may have high added value for the steel industry. The difficulty in obtaining manganese encourages the exploration of new secondary sources such as the
Oct 3, 2019
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Mathematical Modeling Of Argon And Nitrogen Plasma Arcs At Atmospheric Pressure
By Marco A. Ramírez-Argáez
A 2D mathematical model was developed for the plasma arc welding process. Computational simulations based on mass and momentum conservation equations as well as Maxwell equations were performed by usi
Oct 30, 2017
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Cavitation Erosion Resistance Of Active Screen-low Temperature Plasma Nitrided Aisi 410 Martensitic Stainless Steel
By Luis Armando Espitia
AISI 410 martensitic stainless steel specimens were low temperature plasma nitrided at 400°C in a mixture of 75%N2:25%H2, during 20 h. Active screen technic was used to avoid any edge effect The nitri
Jul 31, 2018
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Cerâmicas Estruturais Produzidas A Partir De Rejeitos Do Processamento De Pedra-sabão
By Moisés Paulo Teixeira
The use of tailings for the synthesis of new materials is a worldwide concern today. This paper approaches the utilization of tailings of soapstone (steatite) in order to produce ceramics. The results
Oct 30, 2017