Characteristics of Grade R4 Steel Manufactured by Ingot Casting and Used in the Production of Offshore Mooring Chains

Authors

  • Fernando Mainier Universidade Federal Fluminense, Escola de Engenharia, Niterói, Rio de Janeiro, Brazil https://orcid.org/0000-0002-8203-5543
  • Milene Canto Universidade Federal Fluminense, Escola de Engenharia, Niterói, Rio de Janeiro, Brazil
  • Marcelo Meiriño Universidade Federal Fluminense, Escola de Engenharia, Niterói, Rio de Janeiro, Brazil
  • Jamile Delesposte Universidade Federal Fluminense, Escola de Engenharia, Niterói, Rio de Janeiro, Brazil
  • André Alencar-Junior Universidade Federal Fluminense, Escola de Engenharia, Niterói, Rio de Janeiro, Brazil

DOI:

https://doi.org/10.7225/toms.v12.n01.w02

Keywords:

Mooring chain steel, R4 steel, Mechanical properties, Ingot casting, Charpy test

Abstract

The objective of this study is to characterise grade R4 steel manufactured by ingot casting that is used as the raw material for the production of offshore mooring chains. Rolled bars of grade R4 steel have been selected and metallographic analyses and micro hardness, tensile and Charpy V-notch impact tests performed. Tensile and Charpy V-notch impact tests have also been carried out on mooring links manufactured from the same grade R4 steel. Based on the results presented, the influence of the rolling reduction ratio of the bars and the influence of the ingot casting cooling and reheating process have been observed. Both factors have been found to increase product quality, particularly with respect to the central segregation and homogeneity of the rolled bars.

Author Biographies

Milene Canto, Universidade Federal Fluminense, Escola de Engenharia, Niterói, Rio de Janeiro, Brazil

Posgraduação em Gestão - Doutorado

Marcelo Meiriño, Universidade Federal Fluminense, Escola de Engenharia, Niterói, Rio de Janeiro, Brazil

Escola de Engenharia

Jamile Delesposte, Universidade Federal Fluminense, Escola de Engenharia, Niterói, Rio de Janeiro, Brazil

Posgraduação em Gestão-Doutorado

André Alencar-Junior, Universidade Federal Fluminense, Escola de Engenharia, Niterói, Rio de Janeiro, Brazil

Posgraduação em Gestão - Doutorado

ToMS 23 Cover

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Published

2023-04-20

How to Cite

Mainier, F., Canto, M., Meiriño, M., Delesposte, J. and Alencar-Junior, A. (2023) “Characteristics of Grade R4 Steel Manufactured by Ingot Casting and Used in the Production of Offshore Mooring Chains”, Transactions on Maritime Science. Split, Croatia, 12(1). doi: 10.7225/toms.v12.n01.w02.

Issue

Vol. 12 No. 1 (2023): ToMS ~ April 2023

Section

Regular Paper

License

Copyright (c) 2023 Transactions on Maritime Science

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.