Cbn Wheels
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Influence of water in the MQL technique in the grinding of steel AISI 4340 using CBN wheels
Abstract Usually, machining employs cooling methods to avoid high temperatures. In most cases, the cutting fluid is applied with high flow and low pressures. This technique consumes a large amount of cutting fluid that causes serious problems in the environment and in the health of the worker. An alternative to the conventional cooling method is the Minimum
REM, Int. Eng. J.. Publicado em: 2018-07
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2. Influence of optimized lubrication-cooling and minimum quantity lubrication on the cutting forces, on the geometric quality of the surfaces and on the micro-structural integrity of hardened steel parts
The is paper presents an analysis of the influence of minimum quantity lubrication (MQL), optimized and conventional cooling, using different cutting fluid volumes and flow rates, on the surface quality and integrity of hardened steel workpieces, in cylindrical plunge grinding with superabrasive CBN grinding wheels. The final quality of the workpieces were e
Matéria (Rio de Janeiro). Publicado em: 2011
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3. Avaliação da retificação com rebolo de CBN vitrificado aplicada em ligas de alto desempenho / Evaluation of CBN grinding of high performance alloys
Superligas à base de níquel têm uma grande variedade de aplicações, por exemplo, turbinas a gás de aviões, câmaras de combustão, válvulas de motores, etc. As suas principais propriedades são alta resistência mecânica às temperaturas elevadas (>500 graus Celsius), alta resistência à abrasão, alta resistência à fadiga e boa resistência à c
Publicado em: 2008
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4. Study on the behavior of the minimum quantity lubricant - MQL technique under different lubricating and cooling conditions when grinding ABNT 4340 steel
Energy consumption, air pollution and industrial waste have received special attention from public authorities in recent years. The environment has become one of the most important subjects in the context of modern life, for its deterioration impacts the quality of life populations. Driven by pressure from environmental agencies, politicians have drawn up ev
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-06
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5. Analysis of diametrical wear of grinding wheel and roundness errors in the machining of steel VC 131
Due to the high industrial competitiveness, the rigorous laws of environmental protection, the necessary reduction of costs, the mechanical industry sees itself forced to worry more and more with the refinement of your processes and products. In this context, can be mentioned the need to eliminate the roundness errors that appear after the grinding process.
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-06
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6. Analysis of the performance of superabrasive and alumina grinding wheels with different bonds and machining conditions
This paper presents a review of researches on CBN (cubic boron nitride) grinding wheels with the purpose of identifying the state of art in abrasive machining and serving as the basis for future researches and laboratory tests. The scientific studies investigated here report on interesting results involving grinding, published by Brazilian and foreign author
Materials Research. Publicado em: 2003-06
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7. Evaluation of the thermal damages in inlet engine valves varying the grinding wheels and the cutting fluids
Nesse artigo é apresentada uma pesquisa experimental sobre os danos térmicos que aparecem nas válvulas de admissão dos motores após passarem pelo processo de retificação. Foram utilizados, nessa experimentação, quatro tipos de fluidos de corte e dois rebolos (CBN e Al2O3), sendo analisadas a tensão residual, a microdureza e a microestrutrura das pe
Rem: Revista Escola de Minas. Publicado em: 2003-06
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8. Transverse cylindrical grinding of a eutectic alloy
We report herein on a comparison of the performance of two different grinding wheels (conventional and CBN) in the transverse cylindrical grinding of a eutectic alloy. Three cutting conditions were tested: rough, semi-finishing and finishing. The parameters of evaluation were the cutting force, roughness and wheel wear. The optimal cutting force and roughnes
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-03
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9. The Grinding Wheel Performance in the Transverse Cylindrical Grinding of an Eutetic Alloy
This paper presents a research in which the performance of two different grinding wheels (a conventional and a CBN wheel) was evaluated in a transverse cylindrical grinding of a eutectic alloy. Three cutting conditions were tested: rough, semi-finishing and finishing. As evaluating parameters, the cutting force, the roughness and the wheel wear were measured
Materials Research. Publicado em: 2002-10
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10. The Inlet Engine Valves Grinding Using Different Types of Cutting Fluids and Grinding Wheels
In this paper an experimental research is presented in which different types of cutting fluids (a cutting oil and three different types of soluble oils) and grinding wheels (alumina and vitrified CBN) were tested in the inlet engine valves grinding. As evaluation parameters the workpiece residual stress and the grinding wheel wear were analyzed. The cutting
Materials Research. Publicado em: 2002-06
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11. Análise do comportamento da microestrutura de materiais endurecidos retificados com rebolos de CBN
CBN grinding wheels are superabrasive tools, with cutting ability higher than the conventional ones, specially used for grinding DTG (Difficult to Grind) materials. Due to the higher hardness and thermal conductivity of the CBN superabrasive grains, when compared with conventional abrasive grains, the use of CBN tools reduce the grinding temperatures decreas
Materials Research. Publicado em: 2000-10