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Problema do baixo teor de ferrita nas soldas de aço bifásico S32750

2016-09-23View Original

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Prezados, gostaria de perguntar: o teor de ferrita no aço bifásico S32750 é de aproximadamente 40FN. A soldagem é feita por meio de soldagem com eletrodo, utilizando o eletrodo do tipo E2594-16. A corrente de soldagem fica em torno de φ3,2:110A e φ4,0:130A. Após a soldagem, o teor de ferrita na zona soldada fica entre 18 e 30FN. Quais seriam as possíveis causas para um teor de ferrita tão baixo? Como resolver esse problema?

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