ISSN 2594-5300
52º Seminário de Aciaria, Fundição e Metalurgia de Não-Ferrosos — vol. 52, num.52 (2023)
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Abstract
In the current study, different process conditions with and without Calcium were applied to compare and investigate the steel cleanliness in terms of composition, quantity and size of non-metallic inclusions during refining process and continuous casting in Ternium Brazil. The study was conducted in two different production routes and inclusions were characterized through ASTM E45 and SEM/EDS after the steel lamination. The main task was to evaluate inclusionary results for heats treated in AHF (Aluminium Heating Furnace – similar CAS-OB) with Ca and RH (Ruhrstahl Heraeus) degasser without Ca on different process practices in order to have good castability, properties and application for the final product. The results showed that for Ca-treat steels in AHF process route, as expected, inclusions were mostly Ca-aluminates globular ones in bigger size than compared with Al-inclusions found at RH process from which the best results showed smaller quantity of inclusions and good castability performance
In the current study, different process conditions with and without Calcium were applied to compare and investigate the steel cleanliness in terms of composition, quantity and size of non-metallic inclusions during refining process and continuous casting in Ternium Brazil. The study was conducted in two different production routes and inclusions were characterized through ASTM E45 and SEM/EDS after the steel lamination. The main task was to evaluate inclusionary results for heats treated in AHF (Aluminium Heating Furnace – similar CAS-OB) with Ca and RH (Ruhrstahl Heraeus) degasser without Ca on different process practices in order to have good castability, properties and application for the final product. The results showed that for Ca-treat steels in AHF process route, as expected, inclusions were mostly Ca-aluminates globular ones in bigger size than compared with Al-inclusions found at RH process from which the best results showed smaller quantity of inclusions and good castability performance
Keywords
Steelmaking; Secondary refining; Inclusion shape control; Steel cleanliness
Steelmaking; Secondary refining; Inclusion shape control; Steel cleanliness
How to refer
Melo, Luisa Saisse de;
Cerchiari, Bruno Suveges;
Gomes Segundo, Heber Vieira.
EFFECT OF STEELMAKING PROCESS CONDITIONS ON CLEANLINESS CALCIUM AND NON-CALCIUM TREATED STEEL IN TWO DIFFERENT SECONDARY REFINING PROCESS ROUTE IN TERNIUM BRAZIL
,
p. 734-745.
In: 52º Seminário de Aciaria, Fundição e Metalurgia de Não-Ferrosos,
São Paulo,
2023.
ISSN: 2594-5300
, DOI 10.5151/2594-5300-39999
