A Numerical Procedure Based on Orowan’s Theory for Predicting the Behavior of the Cold Rolling Mill Process in Full Film Lubrication

Valigi, Maria Cristina; Malvezzi, Monica; Logozzo, Silvia

doi:10.3390/lubricants8010002

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…It is necessary to use material behavior models that are close to reality to obtain high-quality modeling results. Many authors emphasize the importance of constructing mathematical models of material behavior [24][25][26][27][28]. This allows for an approximation of the model to the actual structure.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Rheology of Grease by the Example of CIATIM-221 and Identification of Its Behavior Model

Nosov

Kamenskikh

2023

Lubricants

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The study of the rheological properties of a lubricant allows for the assessment of the structure’s durability in which they are used. Computer engineering enables the prediction of the structure performance using refined mathematical models of its materials. This paper presents an experimental investigation of the rheological behavior of a lubricant that is actively used in bridge structures. The paper proposed a methodology for determining the rheological characteristics of the lubricant using a rotational viscometer. Additionally, the article performed the task of identifying the mathematical model of the lubricant behavior based on the Maxwell body, using two approaches: the Anand model and the Prony series. The proposed models allow for numerical modeling of the structure’s performance throughout their lifecycle within the scope of computer engineering.

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Section: Introductionmentioning

confidence: 99%

Experimental Study of the Rheology of Grease by the Example of CIATIM-221 and Identification of Its Behavior Model

Nosov

Kamenskikh

2023

Lubricants

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“…Traditionally, an oil-in-water emulsion is used as a lubricant for hot rolling [17]. The oil is either Karanja ester and mineral oil [18][19][20][21]. Oil droplets are believed to enter the voids between contact asperities and function as friction-reducing and cooling agents, and several works also focus on the lubricating state using either experimental or simulation for the rolling process [22,23].…”

Section: Introductionmentioning

confidence: 99%

Influence of Concentration of Sodium Metasilicate and Descaling on the High Temperature Lubricating Effects Evaluated by Hot Rolling Mill

Liu,

Wu,

Huang

et al. 2023

Lubricants

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Lubricant is vital to improve energy efficiency and workpiece durability for the moving counterpart. High-temperature lubricants are important for the hot rolling process to reduce the rolling force and protect the roller and the strips. The current paper concerns eco-friendly sodium metasilicate as a high-temperature lubricant. A hot rolling mill is employed to evaluate the lubrication effect of sodium metasilicate. The influence of crucial factors of concentration of lubricant and descaling is discussed; the rolled surface was analyzed by scanning electron microscopy, energy dispersive spectroscopy, and 3D profilometer. The results depict that the sodium metasilicate can reduce the rolling force by about 7.8% when the concentration of sodium metasilicate is 18% and above, and descaling of the hot stripe makes the lubrication effect more effective, which can reach a 12.7% reduction in the rolling force. This lubrication is attributed to the formed melts of the sodium silicate layer that offers an easy shearing interface. For the un-descaled samples, the lubricant will be compacted and mixed with the oxide scale, and weakens the lubrication effect. This work suggests that sodium metasilicate can be a high-temperature lubricant for hot rolling; descaling is vital, not only for the quality of the product but also for the efficiency of the lubricant. This work will also be useful for the concentration selection of glass lubricant.

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“…Valigi et al presented a numerical model combining Orowan theory to predict the working parameters of full film lubrication cold rolling process. Using it, we can forecast the thickness reduction of the metal sheet and the pressure trend, and the rolling mill process parameters can be regulated to obtain a specific output thickness [21]. It is significant to establish a more practical vibration model of rolling mill system for the analysis of roll system vibration.…”

Section: Introductionmentioning

confidence: 99%

Vibration Characteristics of Rolling Mill System under Constraints of the Nonlinear Spring Force and Friction Force from Hydraulic Cylinder

Liu

Pan

Jiang

et al. 2021

Shock and Vibration

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Considering the two kinds of nonlinear constraints of rolling mill hydraulic cylinder, spring force and friction force, the vibration model of rolling mill system is established. The amplitude frequency response equations are obtained by using the average method. Comparing the time history curves of vertical vibration displacement of rolling mill system under the nonlinear spring force and friction force, the amplitude frequency characteristic curves are simulated. The external excitation amplitude is viewed as the bifurcation parameter, and the system bifurcation response changing with the external excitation amplitude is analyzed. The influence of the external excitation amplitude on the system stability is studied. The results indicate that the increase of the nonlinear spring force makes the rolling mill system’s unstable area to become wider, and the influence on the rolling mill system of nonlinear friction force behaves as the damping characteristics; the vibration of rolling mill system is alternating between the periodic, period-doubling, and the chaotic motion. The research results provide a theoretical support for restraining the vibration of the rolling mill system in the actual production process.

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A Numerical Procedure Based on Orowan’s Theory for Predicting the Behavior of the Cold Rolling Mill Process in Full Film Lubrication

Cited by 5 publications

References 24 publications

Experimental Study of the Rheology of Grease by the Example of CIATIM-221 and Identification of Its Behavior Model

Experimental Study of the Rheology of Grease by the Example of CIATIM-221 and Identification of Its Behavior Model

Influence of Concentration of Sodium Metasilicate and Descaling on the High Temperature Lubricating Effects Evaluated by Hot Rolling Mill

Vibration Characteristics of Rolling Mill System under Constraints of the Nonlinear Spring Force and Friction Force from Hydraulic Cylinder

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