Abrasive Size
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Influence of the addition of niobium oxide on the properties of fused aluminum oxide used in abrasive tools
Abstract Fused alumina is a material used in the manufacturing of abrasive tools, due to its high fusion point, great hardness, and mechanical toughness. In this context, this study addressed the influence of niobium addition on the properties of fused alumina for abrasive applications. A comparison was also made between this oxide and the brown fused alumin
Cerâmica. Publicado em: 2022
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2. Desempeño de discos segmentados de diamante en el corte de hormigón
ABSTRACT Segmented diamond discs are used in cutting abrasive and fragile materials, such as masonry, concrete and marble. Their constant evolution over the past 15 years has allowed increasing the effectiveness of these operations. However, despite being widely used, there is still no standard test to assess their performance in representative conditions of
Matéria (Rio J.). Publicado em: 19/07/2018
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3. Abrasive Wear Behaviour of Surface Modified Jute Fiber Reinforced Epoxy Composites
The present article depicts the specific wear rate of jute fiber reinforced epoxy composites with different weight percentage of fiber loading (10, 20, 30, 40 wt. %) and different chemical treatments (Alkaline and Benzoyl chloride treatment). The three-body abrasive wear analysis was studied according to ASTM-G65 using a rubber wheel abrasion apparatus (dry
Mat. Res.. Publicado em: 30/03/2017
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4. Efecto de los parámetros de soldadura sobre la microestructura de recargues nanoestructurados base hierro depositados por FCAW-S
Lately modern hardfacing tubular wires for semiautomatic welding with gas protection and without it have been developed. These wires deposit Fe-based nanostructured alloys with high abrasive wear resistance. The information on these new consumables is scarce, especially about the effect that the welding parameters (heat input, shielding gas, arc voltage, cur
Soldag. insp.. Publicado em: 2014-12
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5. Efecto del calor aportado en recargues nanoestructurados base hierro
In the last years there have been developed several consumables that deposit hard nanostructured iron-based metals with high resistance to abrasive wear. The erosive and abrasive wear resistances are mainly controlled by the chemical composition and the microstructure. In turn, the microstructure of the deposited metal usually shows variations with the exper
Soldag. insp.. Publicado em: 2013-12
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6. Abrasion of 6 dentifrices measured by vertical scanning interference microscopy
OBJECTIVES: The abrasion of dentifrices is well recognized to eliminate the dental plaque. The aims of this study were to characterize the abrasive powders of 6 dentifrices (3 toothpastes and 3 toothpowders) and to measure the abrasion on a test surface by Vertical Scanning Interference microscopy (VSI). MATERIAL AND METHODS: Bright field and polarizatio
J. Appl. Oral Sci.. Publicado em: 2013-09
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7. Estudo da relação entre propriedades de compósitos de fricção aplicados a sistemas de freio a disco e a propensão à ocorrência de Squeal Noise
Automotive brake systems are very often susceptible to generate high frequency noise as a result of a self excited vibration. This phenomenon is generically nominated brake squeal noise and is the subject of many studies which intend to identify and describe its exciting mechanism and to propose counter measures to avoid its occurrence. One key subject yet t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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8. 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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9. Efeito do tamanho do abrasivo no desgaste de metais. / The effect of abrasive size on the wear resistance of metallic materials.
In this research, the effect of abrasive size on the wear resistance of five metallic materials was investigated. Abrasive wear tests using a pin test on alumina paper were carried out using abrasive sizes between 16 µm and 192 µm. The wear surface of the specimens was examined by scanning electron microscopy for identifying the wear micromechanism and the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/06/2010
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10. 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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11. SimulaÃÃo do Desgaste Abrasivo via InteraÃÃes MÃltiplas / Using Multiple Interactions to Simulate Abrasive Wear
Abrasive wear is currently classified according to different particle dynamics: a) the sliding of active particles on the sample surface and b) the rolling of abrasives between the surfaces. The prevailing particle dynamics depends on the system features. In this thesis, instrumented laboratory tests are used to present a new methodology for the simulation o
Publicado em: 2008
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12. 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