Slurry Wear
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. PREDICTION OF COAL SLURRY PIPELINE TRANSPORTATION GRADING REDUCTION AND ITS INFLUENCE ON PIPE TRANSPORTATION PARAMETERS
Abstract Coal slurry pipe, being a new type of energy transportation mode, changes of the particle composition and the effect on other parameters are worth studying. Comparison of ring tube test measured data and batch grinding model simulation data shows that batch grinding model can predict the coal particle gradation to a certain extent. The effect of col
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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2. Microstructure and Mechanical Properties of Borided Inconel 625 Superalloy
ABSTRACT The Ni- based superalloy Inconel 625 is extensively used owing to its high strength, excellent fabricability, good weldability and outstanding resistance to high temperature corrosion against aggressive environments. However, despite its unique properties and extensive use, its wear resistance is in some cases unsatisfactory. In this study, Inconel
Matéria (Rio J.). Publicado em: 22/06/2017
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3. Preventive effect of toothpastes with MMP inhibitors on human dentine erosion and abrasion in vitro
ABSTRACT The use of gels and mouthrinses with MMP inhibitors (chlorhexidine, and green tea extract) was shown to prevent erosive wear. The aim of this study was to analyze the protective effect of toothpastes containing MMP inhibitors on dentine loss induced by erosion in vitro. Material and Methods Five groups each containing 12 specimens of human root de
J. Appl. Oral Sci.. Publicado em: 2016-02
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4. Impact of filler size and distribution on roughness and wear of composite resin after simulated toothbrushing
OBJECTIVES: Nanofilled composite resins are claimed to provide superior mechanical properties compared with microhybrid resins. Thus, the aim of this study was to compare nanofilled with microhybrid composite resins. The null hypothesis was that the size and the distribution of fillers do not influence the mechanical properties of surface roughness and wear
J. Appl. Oral Sci.. Publicado em: 2012-10
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5. Estudo do desgaste e atrito em ensaios micro-abrasivos por esfera rotativa fixa em condições de força normal constante e pressão constante. / Wear and friction study in micro-abrasive wear testing by rotative fixed ball under conditions of constant normal force and constant pressure.
The micro-scale abrasive wear test by rotative ball has gained large acceptance in universities and research centers, being widely used in studies on the abrasive wear of materials. Two wear modes are usually observed in this type of test: rolling abrasion results when the abrasive particles roll on the surface of the tested specimen, while grooving abrasion
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/06/2011
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6. Effect of iron on the prevention of tooth wear: in vitro and in situ studies / Efeito do íon ferro na prevenção da erosão dentária: estudos in vitro e in situ
Este projeto teve como objetivos investigar o efeito do íon ferro (Fe+2), associado ou não ao íon flúor (F-), na redução da erosão do esmalte e da dentina bovinos, bem como desenvolver e avaliar um dentifrício enriquecido com Fe+2 para a prevenção da erosão associada à abrasão. Foram realizados 4 subprojetos: (1) Determinação do efeito proteto
Publicado em: 2010
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7. An experimental study on ultrasonic machining of pure titanium using designed experiments
In the present research work, the effect of several process parameters on the machining characteristics of pure titanium (ASTM Grade-I) has been reported. The machining characteristics that are being investigated are tool wear rate and the quality of the machined surface in terms of the surface finish. The mechanism of material removal was has also been corr
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2008-09
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8. Erosion-corrosion wear of high nitrogen stainless steels in a slurry. / Estudo do desgaste erosivo-corrosivo de aços inoxidáveis de alto nitrogênio em meio lamacento.
Os processos de erosão-corrosão são comumente encontrados em tubulações, válvulas e outros componentes usados na indústria química, petroquímica e na exploração de minérios. Quando a corrosão e a erosão atuam conjuntamente, os mecanismos de dano são complexos e em geral as perdas de massa associadas com esta combinação de processos são maio
Publicado em: 2007
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9. Estudo do comportamento do coeficiente de desgaste e dos modos de desgaste abrasivo em ensaios de desgaste micro-abrasivo. / Wear coefficient and wear mode transition study in micro-abrasive wear testing.
This work presents a study on the behavior of different materials under the action of micro-abrasive wear. A micro-abrasive wear testing machine with fixed sphere was designed and constructed, presenting a mechanical configuration with differences with respect to those found in the literature (Gee et al., 2005). M2 tool steel and WC-Co P20 were used as testi
Publicado em: 2006
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10. Contribuição aos estudos dos Mecanismos de Interação das Partículas Abrasivas com as Microestruturas de Ferros Fundidos em Processo de Desgaste
The evaluation of wear (loss of mass during time) of some mechanical components used in circuits of iron ore slurry pumping represents an economical relevant problem in mining industry. Cast irons with high chromium content is the most frequently material having desired properties for this application. The aim of this study is to contribute to the understand
Publicado em: 2004