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Mostrando ítems 11-20 de 277
Caracterização dos problemas relativos à qualidade de energia elétrica causados por um forno de aquecimento a indução
(Universidade Tecnológica Federal do ParanáCuritibaDepartamento Acadêmico de Eletrotécnica, 2013-09-12)
By presenting energy-efficient, high heating rate, low level of oxidation of the material processed, low emission of dust, noise and fumes and provide a better working environment and easy control of the production process, ...
Análise comparativa dos processos de brasagem por indução e brasagem manual via ensaios mecânicos
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilDepartamento Acadêmico de Engenharia MecânicaTecnologia em Fabricação MecânicaUTFPR, 2017-12-05)
Technological development and market competitiveness have forced industries to renew their products and minimize their costs. To this end, it was thought to develop an automated brazing process for aluminum tubes previously ...
Sintese e caracterizacao de vidros niobofosfatos de bario
(Sao Paulo: Associacao Brasileira de Ceramica, 2000, 2014)
Silicon purification in vacuum induction furnace
(Campinas, 2015-01)
In this paper the removal of impurities from metallurgical grade silicon by melting in a vacuum induction furnace was studied, in order to produce solar grade silicon, which is the raw material of the photovoltaic cells ...
Proposals for improvement of methodology and process of collecting and analyzing compatibility of power quality indicators in distribution systems
(2011-05-31)
This article aims to present proposals for improvement of key standards and resolutions concerned about the methodology for calculating the indicator of total harmonic voltage distortion, and should contribute to the process ...