Generalized estimates for the density of oxide scale in the range from 0 C to 1300 C

Beygelzimer, Emmanuil; Beygelzimer, Yan

doi:10.48550/arxiv.2110.09791

Cited by 2 publications

(3 citation statements)

References 16 publications

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“…According to the authors' cooling model, calculations were performed for the conditions of each of the ten tests. The following values of the basic input data (in addition to the data presented in Tables 1 and 2 and Figure 12) were taken: − The design and layout characteristics of RQM, according to the technical documentation of the equipment manufacturer (basic characteristics are given in [31,81,89]); − The thermophysical properties of the test plate as a function of temperature, according to the formulas [55] for medium-carbon steel (see Appendix B); − The thermophysical properties of oxide scale as a function of temperature, according to the authors' formulas [56][57][58][59]; − The oxide scale thickness was assumed to be constant throughout the cooling period of each test and equal to the values given in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…For steel, well-known formulas approximating the dependence of thermophysical properties on temperature are used (for example, [55], see Appendix B for the properties of the test plates). For scale, the formulas described in by the authors in [56][57][58][59] are taken.…”

Section: Cooling Modelmentioning

confidence: 99%

“…where h i is the oxide scale thickness corresponding to its specific mass Y i [m]; η sc is the porosity of oxide scale in fractions of one; and ρ sc is its true density [kg•m −3 ]. For furnace scale, formed when heated to 850-980 • C, we assumed η sc = 0.15 [88] and ρ sc = 5500 kg•m −3 [56].…”

Section: Estimation Of Oxide Scale Thickness On the Surface Of The Te...mentioning

confidence: 99%

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Validation of the Cooling Model for TMCP Processing of Steel Sheets with Oxide Scale Using Industrial Experiment Data

Beygelzimer¹,

Beygelzimer

2022

JMMP

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To verify the mathematical model of the water-jet cooling of steel plates developed by the authors, previously performed experimental studies of the temperature of the test plates in a roller-quenching machine (RQM) were used. The calculated temperature change in the metal as it moved in the RQM was compared with the readings of thermocouples installed at the center of the test plate and near its surface. The basis of the model is the dependence of the temperatures of the film, transition and nucleate boiling regimes on the thickness of the oxide scale layer on the cooled surface. It was found that the model correctly accounts for the oxide scale on the sheet surface, the flow rates and combinations of the RQM banks used, the water temperature, and other factors. For all tests, the calculated metal temperature corresponded well with the measured one. In the experiments with interrupted cooling, the calculated temperature plots repeated the characteristic changes in the experimental curves. The main uncertainty in the modeling of cooling over a wide temperature range can be attributed to the random nature of changes in the oxide scale thickness during water cooling. In this regard, the estimated thickness of the oxide scale layer should be considered the main parameter for adapting the sheet temperature-control process. The data obtained confirm the possibility of effective application of the model in the ACS of industrial TMCP (Thermo-Mechanical Controlled Process) systems.

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Section: Resultsmentioning

confidence: 99%

Section: Cooling Modelmentioning

confidence: 99%

Section: Estimation Of Oxide Scale Thickness On the Surface Of The Te...mentioning

confidence: 99%

See 1 more Smart Citation

Validation of the Cooling Model for TMCP Processing of Steel Sheets with Oxide Scale Using Industrial Experiment Data

Beygelzimer¹,

Beygelzimer

2022

JMMP

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Thermal conductivity of oxide scale and its components in the range from 0 C to 1300 C: Generalized estimates with account for movability of phase transitions

Beygelzimer¹,

Beygelzimer²

2021

Preprint

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Generalized estimates for the density of oxide scale in the range from 0 C to 1300 C

Cited by 2 publications

References 16 publications

Validation of the Cooling Model for TMCP Processing of Steel Sheets with Oxide Scale Using Industrial Experiment Data

Validation of the Cooling Model for TMCP Processing of Steel Sheets with Oxide Scale Using Industrial Experiment Data

Thermal conductivity of oxide scale and its components in the range from 0 C to 1300 C: Generalized estimates with account for movability of phase transitions

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