ISSN 2594-5297
56° Seminário de Laminação e Conformação de Metais — vol. 56, num.56 (2019)
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Nowadays, due the development of new hot rolled strips at USIMINAS, established the necessity of realizing studies to define new parameters for the welding machine of new pickling line, in order to improve the results of mechanical and metallurgical properties relation of these materials. This study, that was designed for study of weldability of high strength low-alloy steel with low boron content that overcomes 600 MPa of tensile strength, there was analyzed the influence of energy input and preheating temperature on mechanical properties of hot rolled strips at three distinct thickness (2, 4 and 6 mm). To evaluate the welding results, there were made tensile test, micro-hardness, metallography (micro and macro examination) and scanning electron microscopy analysis. Through the analyzing of the mechanical and metallographic tests, a better welding performance was verified, increasing the welding energy and the preheating temperature.
Nowadays, due the development of new hot rolled strips at USIMINAS, established the necessity of realizing studies to define new parameters for the welding machine of new pickling line, in order to improve the results of mechanical and metallurgical properties relation of these materials. This study, that was designed for study of weldability of high strength low-alloy steel with low boron content that overcomes 600 MPa of tensile strength, there was analyzed the influence of energy input and preheating temperature on mechanical properties of hot rolled strips at three distinct thickness (2, 4 and 6 mm). To evaluate the welding results, there were made tensile test, micro-hardness, metallography (micro and macro examination) and scanning electron microscopy analysis. Through the analyzing of the mechanical and metallographic tests, a better welding performance was verified, increasing the welding energy and the preheating temperature.
Palavras-chave
Laser welding; Weldability; Low-alloy steel; carbon-boron steel
Laser welding; Weldability; Low-alloy steel; carbon-boron steel
Como citar
Lelis, Jefferson Lisboa;
Gouveia, Maiara Rodrigues;
Silva, Marcos Roberto Soares da.
STUDY OF WELDABILITY OF HIGH STRENGTH LOW ALLOY STEELS WITH BORON AT LASER WELDING
,
p. 194-201.
In: 56° Seminário de Laminação e Conformação de Metais,
São Paulo,
2019.
ISSN: 2594-5297
, DOI 10.5151/2594-5297-32515
