Magnetic evaluation of the external surface in cast heat-resistant steel tubes with different aging states

Arenas, Mónica P.; Silveira, Rosa Maria Sales da; Pacheco, Clara Johanna; Bruno, A. C.; Araújo, Jefferson F.D.F.; Eckstein, Carlos Bruno; Nogueira, Laudemiro; Almeida, Luiz Henrique de; Rebello, J. M. A.; Pereira, Gabriela Ribeiro

doi:10.1016/j.jmmm.2018.02.051

Cited by 10 publications

(1 citation statement)

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“…According to the study of the magnetic permeability of different oxides, the magnetic permeability of different oxides on the surface of work rolls is of great difference. The magnetic permeability of Fe2O3 is smaller than martensitic matrix, while Fe3O4 magnetic permeability is larger than martensitic matrix [25,26]. The change of magnetic permeability of work roll surface caused by oxidation can be obtained by pulsed eddy current electromagnetic nondestructive inspection method to evaluate and monitor the oxidation state.…”

Section: Introduction mentioning

confidence: 99%

On-line monitoring of oxidation states in HSS work rolls during hot rolling using pulsed eddy current testing

Chen

Song

et al. 2023

Int J Adv Manuf Technol

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The quality of rolled products and consumption of rolls are greatly influenced by the oxidation behavior of work roll surface in hot rolling. It is of great significance to improve the quality of rolled products and reduce the consumption of rolls to monitor and evaluate the oxidation states of work rolls in service by non-contact nondestructive inspection technology. In this study, a self-developed test apparatus simulated the high-speed steel (HSS) work roll oxidation in real hot rolling conditions. The interaction mechanism between oxidation and wear of HSS work roll under different conditions was revealed. Furthermore, a set of pulsed eddy current (PEC) nondestructive inspection system was designed and built to evaluate different oxidation states of HSS work roll in service. Variational mode decomposition (VMD) Hilbert transformation was proposed to overcome the problem of mode mixing in mode decomposition of oxidation monitoring signals. At last, the Hilbert marginal spectrum centroid was presented as a characteristic for quantifying the surface oxidation state of work rolls in service.

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Section: Introduction mentioning

confidence: 99%