2 documents found, page 1 of 1
Esferoidização do aço SAE 1080.
Pinho, Renan Gurgel; Leite, Nívea Rodrigues; Silva, Marcelo José Gomes daThe objective of this study is to investigate the spheroidization of steel SAE 1080 and its respective effect of time variation in the final microstructure and in the hardness of the material. The SAE 1080 steel is subjected to isothermal annealing for a long time using 90, 100 and 120 hours of heating at 715ºC temperature. The results demonstrated that it is possible spheroidize SAE 1080 steel in their respect...
Estudo dos produtos da combustão do carvão mineral visando seu aproveitamento c...
Teixeira, Joelane Maria de Carvalho; Silva, Suely Alves; Pinheiro, Halisson de Souza; Nogueira, Ricardo Emílio Ferreira QuevedoThe process of combustion of mineral coal in power station generate waste or by-products (products of coal combustion, PCC's) potentially harmful to the environment. This study aims to identify us waste, the main chemical elements and all the major crystalline phases that contain them. The PCC's were milled in high energy mills and sintered at 1200 ° C for 2 hours. They were then submitted to characterization b...