Desenvolvimento da Tecnologia de Soldagem do Titânio pelo Processo TIG Orbital no Segmento Aeroespacial Brasileiro - Parte 2: Caracterização das Juntas Soldadas
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Data
2007-04-01
Autores
Orlowski de Garcia, Jose Augusto
de Lima, Gerson Luiz
Bocallao Pereira, Wilson D.
Guimaraes, Valdir Alves [UNESP]
Neto, Carlos de Moura
da Rocha Paranhos, Ronaldo Pinheiro
Título da Revista
ISSN da Revista
Título de Volume
Editor
Associação Brasileira de Soldagem (ABS)
Resumo
In this work, three welding programs for orbital TIG previously developed were used, using pulsed current and increasing speed (M), constant current (#B) and pulsed current and decreasing current (#C). One of those should be used for the propulsion system of the satellite CBERS (CHINA-BRAZIL EARTH RESOURCES SATELLITE). Welded joints using tubes of commercially pure titanium were obtained with these procedures, which were characterized by means of mechanical and metallographic tests. The obtained results show that the three welding procedures produce welded joints free of defects and with adequate shape. Although small differences on mechanical properties and microstructure have been observed, the three welding programs attained compatible results with international standards used in the aerospace segment. The welding program #B, due the reduced heat input used, was considered to obtain slightly advantage over the others.
Descrição
Palavras-chave
orbital TIG welding, titanium, satellite
Como citar
Soldagem & Inspecao. São Paulo: Associação Brasil Soldagem, v. 12, n. 2, p. 107-114, 2007.