Chemical Tempering
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Effect of the Chemical Homogeneity of a Quenched and Tempered C-Mn Steel Pipe on the Mechanical Properties and Phase Transformations
Seamless steel pipes for application in the oil and gas industries are manufactured from quenched and tempered steel. Aiming to meet the required characteristics, it is necessary that the microstructure and the mechanical properties are homogeneous along the wall thickness of the pipes, which is even more critical for thick wall pipes. Considering the seamle
Mat. Res.. Publicado em: 03/06/2019
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2. Análisis comparativo de dientes de rastrillo giratorio para uso agrícola
ABSTRACT This study is aligned with the objective of the research project to support small business in the development of regional components. It is presented an analysis case performed as assistance to a producer in search of optimization in the quality of his line of agricultural use. The study applicant needs to find a root cause of the difference in in-s
Matéria (Rio J.). Publicado em: 19/07/2018
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3. Estudo dos mecanismos de fadiga e análise de desempenho em mola para válvula automotiva em regime de alto e ultra-alto ciclo. / Study on the fatigue mechanisms and performance analysis in automotive valve spring under high-and-ultra-high-cycle regime.
This paper presents a study on the valve spring fatigue mechanisms, carried out through analysis of mechanical behavior correlated to microstructural aspect. The samples were made of high strength steel Si-Cr, obtained by conventional (quenching and tempering) and unconventional (austempering) heat treatments, generating a single level of hardness (approxima
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/03/2012
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4. Drying and quality of desmucilled cherry coffee submitted to different tempering periods. / Secagem e Qualidade do Cafà Cereja Desmucilado Submetido a Diferentes PerÃodos de Repouso
ISQUIERDO, Eder Pedroza. Drying and quality of desmucilled cherry coffee submitted to different tempering periods. 2008, 98 p.(Dissertation Master in Engeneering Agriculture) â Universidade Federal de Lavras, Lavras/MG* The present work aimed to evaluate the effect of different tempering periods during the drying and different contents of water in which the
Publicado em: 2008
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5. The Influence of the Austenitizing Temperatures for Quenching and Tempering on the Toughness and Fatigue Life of SAE 5160 Steel with Different P Contents / Influência da temperatura de austenitização para têmpera e de revenimento na tenacidade e na vida em fadiga do aço SAE 5160 para diferentes teores de fósforo
The aim of this work was to analyze the influence of austenitizing and tempering temperatures on the impact and fatigue life of the SAE 5160 spring steel, considering two different P amount. Bars (70 x 10 mm) were heat treated using three different austenitizing temperatures, 850ºC, 900ºC and 1000ºC, with a 15 min furnace soaking time. The quenching tempe
Publicado em: 2007
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6. Effects of thermal and chemical tempering in a glass dielectric / Efeitos da têmpera térmica e química em um dielétrico de vidro
Os dielétricos de vidro temperado são componentes utilizados em isoladores elétricos de linhas de transmissão e de distribuição de energia elétrica, e devem apresentar confiabilidade operacional para suportar o clima e as condições de poluição das cidades e metrópoles do Brasil. O objetivo deste trabalho foi desenvolver uma rota de produção de
Publicado em: 2007
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7. The influence of chemical composition of high-speed steels on the wear during cutting and erosion tests
The paper presents the results of investigations of the 5% cobalt and 2% molybdenum additions in the W-Mo-V and W-V high-speed steels of the 9-2-2, 11-2-2 and 11-0-2 types with economically designed chemical composition on the wear mechanism during cutting and erosion tests. The 5% cobalt addition results in increasing the secondary hardness effect by 1.6 to
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-04
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8. Fracionamento termico e obtenção de gorduras de cupuaçu alternativas a manteiga de cacau para uso na fabricação de chocolate
Thermal analyses of natural cupuaçu fat (Theobroma grandiflorum Schumann) acquired in Manaus, AM, were made by Differential Thermal Analyses with a DSC, and indicated similar polimorphic behavior to cocoa butter. When submitted to traditional tempering process used for cocoa butter, both fats crystallized preferenciaty in the Forms IV and V. The composition
Publicado em: 2001