hydraulics of rolling mill
Optimization Strategy of Rolling Mill Hydraulic
2023.3.31 The 5500 mm thick plate rolling mill studied in this paper adopts the bottom installation, as shown in Figure 2 and Figure 3, the HGC hydraulic cylinder is installed on the bottom of the frame, and above it is
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Research on vibration characteristics of mill rolls based on
2021.4.1 Hydraulic system is a classic nonlinear system in rolling mill vibration system, but it often manifested weakly nonlinear. For high-precision position control mill
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Modeling and Identification of Hydraulic System on Rolling Mill
1994.7.1 The identification of a hydraulic system on a hot rolling mill is described. The rolling mill is in operation at The Danish Steelworks Ltd. in Frederiksværk, Denmark. The
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(PDF) Hot rolling mill hydraulic gap control (HGC)
2015.1.1 Hot rolling mill hydraulic gap control (HGC) thickness control improvement January 2015 Authors: Peter Kucsera Óbudai Egyetem Z.
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Vertical–Horizontal Coupling Vibration of Hot Rolling Mill
2021.1.18 The results show that the amplitude and resonance region can be reduced by appropriately reducing the external disturbance force and the nonlinear spring force of
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GUDXOLF7HQVLRQ Mathematical Modeling of
2022.2.23 With creativity and innovation in mind, in order to provide suitable online heating experimental conditions for metallic material researchers, NEU-RAL has
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[PDF] Investigation of the Hydraulic Servo System of the Rolling Mill ...
2020.12.10 In order to improve the disturbance rejection ability and tracking accuracy of the hydraulic servo system of the rolling mill, this study combines nonsingular terminal
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Identification and optimization for hydraulic roll gap
2015.6.12 In order to improve the control performance of strip rolling mill, theoretical model of the hydraulic gap control (HGC) system was established. HGC system offline
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Research on the Vertical Vibration Characteristics
2019.11.2 For the problem of vertical vibration of the rolling mill, the effects of different equivalent damping coefficient, leakage coefficient, and proportional coefficient of the controller on the hydraulic screw down
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Optimization Strategy of Rolling Mill Hydraulic Roll Gap
2023.3.31 In response to this problem, this paper takes the 5500 mm thick plate production line as the research background, and establishes the model of the rolling mill
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An active method suppressing rolling mill vibration:
2019.7.22 The rolling mill vibration not only seriously causes the strip thickness heterogeneity, but also damages the rolling mill equipment and its electrical components. Existing vibration suppression methods are passive and mainly tune mechanical, hydraulic, electrical and rolling process parameters. A new active vibration suppression method
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Vibration monitoring and analysis of strip rolling mill based
2022.9.16 A vibration monitoring method of strip rolling mill based on the digital twin model was proposed which could effectively reduce the structure complexity and test cost of the traditional monitoring system. Firstly, the coupling vibration mechanism model of the dynamic characteristics of roll system and bearings of four-high mill was established.
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Automatic Gauge Control in Rolling Process Based on
2014.11.24 Automatic rolling process is a high-speed system which always requires high-speed control and communication capabilities. Meanwhile, it is also a typical complex electromechanical system; distributed control has become the mainstream of computer control system for rolling mill. Generally, the control system adopts the 2-level control
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Rolling Mill - an overview ScienceDirect Topics
2.1 Experimental set up. A Hille-100 rolling mill with rolls of 225 mm diameter and 254 mm length, driven by a variable speed DC motor of 75 horse power, was used. The maximum rolling force, torque and speed are 1500kN, 13kN-m and 70 rpm respectively. The sensor roll nitrided surface hardness is 65 to 70 HRC. The diameter of the top and bottom ...
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Influence of mill modulus control gain on vibration in hot rolling ...
2020.4.22 The rolling mill vibration is characterized by the coupling effects among mechanical, electrical, hydraulic and interfacial subsystems. The influence of the mill modulus control gain in automatic gauge control on the vibration in hot rolling mills was investigated. Firstly, an experiment related to the mill modulus control gain was carried
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en/hydraulics of rolling mill customer case.md at main
Contribute to dinglei2022/en development by creating an account on GitHub.
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[PDF] Investigation of the Hydraulic Servo System of the Rolling Mill ...
2020.12.10 In terms of uncertainty in the system model caused by load changes and external interference signals, the nonsingular terminal sliding mode-active disturbance rejection control method exhibited better disturbance rejection capacity and a higher tracking accuracy than NTSMC. In order to improve the disturbance rejection ability and tracking
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2021.4.1 The components of rolling mill vibration system all are nonlinear, and the performance in nonlinearity is slightly different. Hydraulic system is a classic nonlinear system in rolling mill vibration system, but it often manifested weakly nonlinear. For high-precision position control mill vibration system, nonlinearity is also not negligible.
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Design and Fabrication of a One Stand Hot Tandem Rolling Mill
2022.10.24 The proposed one-stand hot tandem rolling mill was constructed using 60 mm diameter work rolls, 150 mm diameter backup rolls, 120 mm diameter spur gears, a 3 hp electric motor, and a 50 mm ...
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2021.8.6 The servo valves of AWC hydraulic system are d792-s99joqa6vsx2-o (used on E1 vertical roll mill) and d792-s80joqa6vsx2-o (used on E2 vertical roll mill) of MOOG company with high response, and their flow rates are 1000L / min and 800L / min respectively. AWC液压系统的主要性能参数如下表所示。. The main performance
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Optimization Strategy of Rolling Mill Hydraulic Roll Gap
2023.3.31 However, the rolling mill hydraulic roll gap control system studied in this paper is a complex nonlinear system, for which is difficult to obtain accurate model. Aiming at the above problems, combined with the actual production situation of the project site, a mathematical model of the hydraulic roll gap control system of the 5500 mm rolling ...
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Active disturbance rejection synchronous control for both
2013.12.1 As for the screw-down system, Liu et al. [7] established a rolling mill model under non-linear constraint of the hydraulic screw-down cylinder, and studied the behavior characteristic of the rolls ...
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Dynamic matrix predictive control for a hydraulic looper
2017.7.9 Identification and optimization for hydraulic roll gap control in strip rolling mill [J]. Journal of Central South University, 2015, 22(6): 2183–2191. Article Google Scholar CHEN Chun-ta, RENN J C, YAN Zong-yuan. Experimental identification of inertial and friction parameters for electro-hydraulic motion simulators [J].
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OPTIMILL Strip Rolling Mills – Achenbach Buschhütten
Designed either as 6-high or 4-high rolling mills they are always tailored to the specific operation purpose. Special applications, e.g. as bright rolling mills, require the 2-high rolling mill design. For each new strip rolling mill or those to be modernized, a holistic approach to perfectly synchronize mechanics, hydraulics, automation, and ...
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CN101716606A - Rolling mill AGC control system - Google
Rolling mill hydraulic AGC control comprises roll gap Position Control and roll-force control dual mode, and its method is: sample and signal feedback by displacement detector, roll-force checkout gear; Adopt the given controller output of slope gradient generator gap values between rollers, depress speed with control; In roll gap control and ...
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Hot Cold Rolling Mill Equipment Manufacturer Mill
Butech Bliss has been successful in reconditioning, modernizing or replacement of mill roller table, centering guides, roughing mill stands, hot mill shears, finishing mill stands, coil processing equipment and material handling equipment than any other rolling mill manufacturer. Typical upgrades to hot mill stands include the addition of roll ...
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Vibration Characteristics of Rolling Mill System under
2021.1.19 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
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2010.3.14 Finishing mill is the most important equipment of rolling high-speed rod, the accuracy of its mill balancing oil hydraulic cylinder function precision directly influences the quality of wire rod finished product, there is the problem of often revealing in actual use, do not go out just to reveal in 1 month, trace it to its cause is because the cylinder barrel
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Vibration prediction and analysis of strip rolling mill based
2022.6.23 The stable operation of strip rolling mill is the key factor to ensure the stability of product quality. The design capability of existing domestic imported and self-developed strip rolling mills cannot be fully developed, and the frequent occurrence of mill vibration and operation instability problems seriously restrict the equipment capacity and
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Vibration Energy Coupling Behavior of Rolling Mills under
2023.2.20 The operation of the world’s first multimode continuous casting and rolling F3 (3rd finishing mill stand) finishing mill was hampered by frequent vibrations. Mill vibrations were found to be caused by the transmission and coupling of vibration energy flow. In this study, an overall finite element model of the F3 stand is established based on the
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