Estudo das características microestruturais e propriedades mecânicas em tubos de aço com costura normalizados / Estudo das características microestruturais e propriedades mecânicas em tubos de aço com costura normalizados

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

The use of steel tubes with seam in the industry is growing every year. Advantages as the low cost and the reduced weight of the tubular pieces do the first option of this product in the moment of the conception of the projects. But the competition in the automotive industry submits the manufacturers of steel tubes to new challenges, once the demand of characteristics as high conformability and mechanical resistance is becoming more and more common for this product, which already was considered a commodity. In this context, the processes of thermal treatment and the drawing it has been efficient methods to modify the mechanical properties, consolidating as important tools of technology aggregation and value to the steel tubes with seam. The search of great properties picks on continuous improvement in the production processes and improvement of steel tubes with seam, and this study evaluates the main variables of control of the process, welding and thermal treatment of these products. Those variables include the type of used steel, the microstructure of the heat affected zone (HAZ), mechanical properties, austenitizing temperature and the time of thermal treatment. This work also exposes the state of art and relative concepts to production of steel tubes with seam, beyond a detailed description of the methods, materials and processes involved in the research.

ASSUNTO(S)

fornos weld solda steel tubes tratamento térmico furnaces engenharia de materiais e metalurgica tubos de aço thermal treatment

ACESSO AO ARTIGO

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