2020-10-13 · FEM model to simulate the cold rolling process . In this paper, an accurate 3D FEM model for 6-high CVC rolling mill was developed to analyse the elastic-plastic deformation of strip-roll-coupled overall mill. The complicated rolling force distributions
2020-10-13 · 5.5 ANN models for cold rolling strip flatness prediction 75 5.5.1 General purpose flatness prediction model 75 18.104.22.168 Application of optimized deformation resistance 80 22.214.171.124 Results and discussion 81 126.96.36.199 Dimensionality reduction technique 89 5.5.2 Flatness control emulator models 92
2018-9-25 · the roll edges contact length, the rolling force and strip shape will be quantified and discussed in this study. In this chapter, a modified semi-infinite body model was introduced to calculate the flattening of work roll/backup roll, work roll/strip, and the Foppl model (Ginzburg &
2014-7-16 · Abstract: A mathematical model of a strip-looper system of a hot strip tande m rolling mill is developed using Hamilton''s principle and the Galerkin weighted residua l method. Several nonlinearities are considered and the e ects of bending and dynamic forces on the accuracy of the model are studied.
2021-9-9 · Analysis of roll gap heat transfers in hot steel strip rolling through roll temperature sensors and heat transfer models N. Legrand1,a, N. Labbe1,b D. Weisz-Patrault2,c, A. Ehrlacher2,d, T. Luks3,e, J. Horsky3,f 1ArcelorMittal Maizières Research, Maizieres-les-Metz, France 2U.R. Navier, Ecole des Ponts et Chaussées, Marne la Vallée, France
2003-8-22 · Fig. 1 Schematic of the strip rolling process Fig. 2 Cross-section of the contact between a smooth roll and strip with a two-wavelength surface roughness. The rolling di-rection is out of the plane of the ﬁgure: —a–when roll and strip ﬁrst contact, and—b–after some asperity ﬂattening.
2020-4-9 · rolling process. In doing so, a coupling multi-variable simulation model for hot strip rolling was built using non-linear thermo-viscoplastic ﬁnite element method. Fluctua-tions of roll force and torque about the steady-state operating point are derived and the effects of main process parameters such as rolling speed and strip reduction on
rolling strip production and how to establish a simple, fast and stable control model is a very difficult scien-tific problem.1–6) According to the flatness representation method, the flatness control model can be divided into two kinds. One is to represent the flatness by the flatness set of many points, and establish a mathematical model ...
2021-10-2 · of strip before and after rolling. Being applicable for actual rolling conditions is the novelty of the presented model in this study. Based on this model, the strip is pressed between the work rolls according to Fig. 1(a). According to Fig. 1 (b), as the strip enters the rolling gap with thickness, it begins to press and it reaches to thickness.
2021-1-18 · rolling mill, dedicated roll cooling systems are required to fulfill the required functions. Examples are suitable roll cooling and lubricationsystems to fully utilize the advantages of HSS rolls in hot strip mills, and selective roll cooling systems as a method to …
2019-10-14 · This research develops a new mathematical modeling method by combining industrial big data and process mechanism analysis under the framework of generalized additive models (GAM) to generate a practical model with generalization and precision. Specifically, the proposed modeling method includes the following steps. Firstly, the influence factors are screened using mechanism knowledge …
2021-1-27 · Intelligent Recognition Model of Hot Rolling Strip Edge Defects Based on Deep Metals ( IF 2.351) Pub Date : 2021-01-27, DOI: 10.3390/met11020223 Dongcheng Wang, Yanghuan Xu, Bowei Duan, Yongmei Wang, Mingming Song, Huaxin Yu, Hongmin Liu
2020-1-31 · In the metal strip-multiroll leveling process, the action behavior of each roll is different. However, modeling each roll individually will result in redundancy which is not conducive to the modeling of the entire leveling process. To overcome this problem, a roll-strip unit (RSU) model is proposed to uniformly describe the behavior of each roll during the leveling process.
2013-11-12 · The rolling process (flat rolling). 3. Mathematical Model of Cold Rolling Process . 3.1. Force Equation . Define the theory for prediction of specific roll force is central to the development of a model for tandem cold rolling. Referring to, which approximately . Figure 2 represents the strip in the roll bite area, the incoming strip is of ...
2019-12-4 · when a strip with a strong crown is being rolled, in which case the variation range may be as high as 10 – 15 %. CONCLUSION A dynamic model of the cold rolling process that combines the model of the electromechanical system of the rolling mill and the model of the deformation zone and considers their interrelation has been developed.
2018-2-21 · model triggered a wealth of activities geared toward an implementation in the years to follow. In its current form, the model is designed to use a comprehensive thermo-dynamic approach, starting at the roughing mill and calculating strip temperature, phase content, and micro-structure in real time from the roughing stand to the coiler.
2021-9-1 · yond the bite by e.g. a 3D FEM model should be correct. Buckling upon unloading the strip tension can then be dealt with in an uncoupled way, transferring the stress pattern computed by the rolling model into a buckling (shell e.g.) model. The latter then tells if the critical conditions for
This paper has researched strip width model in hot strip rolling. Analyzed physical phenomena influencing strip width, established calculation model in production including width spread during flat rolling, width change induced by bending, width changed by high temperature creep and thermal expansion and contraction during rolling. Practical applications in domestic 1500 hot strip mill show ...
2003-3-20 · Abstract. For hot rolling of steel strips, a computer simulation model was developed that completely integrates different phenomena such as the mechanics and the heat transport in the strip and the roll, and the metallurgical behavior of the strip. Using the standard finite element procedure, basic equations for metal flow, elastic deformation ...
2021-9-22 · Aluminium rolling models: strip quench model increases productivity. Recently we posted a blog about using the Innoval Rolling Model to determine work roll camber. This week I''m going to describe how you can use our strip quench model to increase productivity.
2020-5-22 · metals Article A Comparative Assessment of Six Machine Learning Models for Prediction of Bending Force in Hot Strip Rolling Process Xu Li 1,*, Feng Luan 2,* and Yan Wu 3 1 The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China 2 School of Computer Science and Engineering, Northeastern University, Shenyang 110169, China
2010-6-27 · Coiling temperature is one of the most important targets of hot strip rolling. The coiling temperature can be controlled by laminar cooling system. A lot of measured data were got by many experiments in considering of the characteristics of hot strip rolling and the strip temperature change characteristics in laminar cooling area. To overcome the defects of traditional model, a new coiling ...
2018-3-30 · The AMPSO‐SVR model can be successfully applied to the prediction of strip crown in hot rolling. Both prediction accuracy and generalization ability of the new model have achieved good results. The proposed model provides a new method and idea for shape control and optimization research in hot strip rolling process.
2019-7-30 · 3. Model Validity To verify model validity, numerical analysis results are compared with the eld test data from F of a hot strip rolling mill. e experiment equipment is shown in Figure . It is a hot strip mill composed of seven stand-high rolling mills. e standard parameter settings are listed in Table . Equivalent mass and equivalent stiness
2017-1-23 · accuracy degradation at strip rolling. 2. Model of generating working roll failures The design life of working rolls of any finishing stand at the sheet mill may be determined for an estimated rolling sequence of the j th strip batches with due regard to their shape accuracy and based on the general