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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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High Performance Lubricant From Modified Vegetable Oil
By Salete Martins Alves
The future lubricants must be more environmentally adapted, with a higher level of performance lower total life cycle, cost than currently used lubricants. Environmental friendly, the biodegradable al
Jul 31, 2018
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A Discussion On The Application Of Bi-dimensional Shape Factors Of Particles Causing Severe Wear Of Metals
By Giuseppe Pintaude
The use of two-dimensional shape parameters to characterize abrasive particles is a possible approach to express their angularity. Nonetheless, in sliding abrasion, especially in pin abrasion testing,
Jul 31, 2018
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Influence Of Polymer Shear Thinning On Friction In Hydrodynamic Contacts
By Nigel Marx
In order to understand (and ultimately to predict) the friction reduction resulting from the use of polymer solutions, the rheological properties of model polymer solutions have been measured over a w
Jul 31, 2018
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Analysis Of Lubricant Action Of Biodiesel Using Response Surface Methodology
By Valdicleide Silva Mello
Nowadays the biodiesel use is obligate in Brazil, in order to reduce the emissions of fuel burn. However, it is important to analyze which percentage of biodiesel is necessary to keep or improve the l
Jul 31, 2018
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Kinetic Friction Modeling And Standard Uncertainty Measurement Determination For Sliding Bearing On Shaft Apparatus
By João Luiz do Vale
In standard wear tests, such as pin on disk (ASTM-G99) or block on ring (ASTM-G77), the apparatus simulates conditions that are often different from a machine element real application. Therefore, for
Jul 31, 2018
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Tribological Behavior Of Thread Compound For Applications In Oil And Gas Industry
By Nicolás Ariel Zabala
During the make-up and break-out of the connections, threaded joints are exposed to intense mechanical and tribological solicitations. The connection performance is influenced by its geometry, materia
Jul 31, 2018
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Micro-abrasive Wear Behaviour Of An Iron Aluminide Alloy Under Conditions Of Room And Elevated Temperatures
By Ronaldo Câmara Cozza
Iron aluminide alloy; Ball-cratering wear testing; Rolling abrasion; Wear volume; Coefficient of friction
Jul 31, 2018
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The Phenomenon Of Thermo-capillary Migration Effected By Surface Micro-groove
By Qingwen Dai
The Marangoni effect is an important phenomenon where a surface tension gradient drives liquid towards high surface tension regions. Temperature gradient, evaporation, disparity of viscosity, and surf
Jul 31, 2018
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THERMODYNAMIC EVALUATION OF THE SLAGS OF THE FeO-CaO-SiO2-CrOx-MgO SYSTEM AT 1,873 K
By Nestor Cezar Heck
Aim of the present work is to continue the theoretical evaluation of the slags of the fundamental system CaO-SiO2-CrOx-MgO (Ca-O-Cr-Si-Mg quinary system) at the temperature of 1,873 [K], with the help
Jul 30, 2018
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EFEITO DA TEMPERATURA DE RECOZIMENTO NAS PROPRIEDADES MECÂNICAS E NA MICROESTRUTURA DE UM AÇO COM ALTO TEOR DE Mn LAMINADO A FRIO
By Julio Cezar de Sousa Zorzi
Aços com teor de Mn entre 15% e 30% apresentam ductilidade excepcionalmente alta para sua elevada resistência mecânica, devido à ocorrência de transformação de fases (efeito TRIP) e/ou à formação de m
Jul 30, 2018
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Processing Lines Serving High-end Steel Production For Automotive Products
By Francois Mignard
With a limited global steel production growth, automotive application market shows interesting volumes and trends especially in emerging countries. The recent period has again enabled Siemens VAI to c
Jul 30, 2018
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Recuperação De Elementos De Liga De Resíduos Siderúrgicos Utilizando Pelotas Autorredutoras
By Mário César Mantovani
Um dos principais problemas enfrentados pelas aciarias é o descarte dos resíduos gerados durante a produção do aço. Além de se pagar pelo descarte em aterros monitorados, ocorre também a perda de elem
Jul 30, 2018
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Dynaphase: Online Calculation Of Thermodynamic Properties During Continuous Casting
By Susanne Hahn
The Siemens VAI software model DynaPhase calculates thermodynamic properties depending on the chemical analysis of steel. It can be used online together with Siemens VAI’s secondary cooling model SIME
Jul 30, 2018
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Desenvolvimento De Aço Galvanizado A Quente (Gi) Com Pós-tratamento Para Aumento De Lubricidade
By Juliana Porto Guimarães
A crescente demanda por aços galvanizados com alta lubricidade tem impulsionado o desenvolvimento de pós-tratamentos que, aplicados sobre a superfície dos revestimentos, reduzem o atrito entre o ferra
Jul 30, 2018
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Highlights Of Flat Product Caster References Starting From New Implementations Up To Modernizations
By Oliver Schulz
This paper presents the latest references of the Siemens VAI slab casting technology. Following the connect & cast philosophy Siemens VAI has developed technological packages suitable for installation
Jul 30, 2018
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Análise De Filmes De Escória De Fluxantes Para Aços Baixo Carbono
By Cláudio Antônio Goulart Valadares
O fluxante para aços baixo carbono, aplicado no lingotamento contínuo de placas, apresenta como características a temperatura de fusão entre 1.030°C e 1.070°C e a tendência a cristalização suprimida.
Jul 30, 2018
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Innovative Measuring Technologies In Cold Rolling Mills & Processing Lines For Basic And Future Products
By Jörg Busch
The essential pre-requisite for attaining the high quality of product required from high-speed continuous production processes is the use of new measurement and control technologies. High availability
Jul 30, 2018
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Ultra-low Phosphorus Steel Grade Production In One Batch Bof Bottom Blowing Process
By Henrique Silva Furtado
Concerning production of low phosphorus steel critical grades at ArcelorMittal Tubarão site, bottom blowing system plays a very important role. For those systems with independently controlled tuyeres,
Jul 30, 2018
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Aumento Da Taxa De Resfriamento Pós Bobinamento De Bobina Laminada A Quente Para Os Fluxos De Laminação A Frio, Recozimento E Zincagem Na Csn
By Leiner Novaes Arêdes
Após o bobinamento com temperatura controlada, as bobinas são resfriadas até um valor próximo da temperatura ambiente para o processo de decapagem. Há uma bibliografia farta no que diz respeito à temp
Jul 30, 2018