2023年1月22日 The variation of vibration in the rolling process of the rolling mill was tested and analyzed, and the correlation between vibration and bearing was found. The
2005年1月1日 The presented active vibration rejection concepts for the discussed mill plant problems rely on model-based nonlinear control techniques. In Section 2 the
Fan et al. analyzed and calculated the structural stability of hot rolling mill rolls and revealed that the gap between the framework and rolling mill rolls can cause the
2019年5月19日 Rolling mill vibration is a coupling vibration among mechanical, electrical, hydraulic, and rolling interfacial subsystem. Therefore, a mathematic model of
2023年2月20日 Introduction. Mill vibration has been extensively studied by researchers worldwide. Specifically, researchers have investigated the vibration mechanism and
2014年7月25日 In this paper, vibration characteristics of a Vertical Roller Mill (VRM) are studied by using physical parameters of an operating VRM. The mathematical model is
2016年6月26日 Actually, roller vibration will damage roll system stability and cause bearing horizontal or vertical vibration. Therefore, the CSP four-high mill vibration
2021年1月19日 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
2006年10月24日 In this study, the vibration characteristics of roller mills were researched using a small laboratory roller mill. As a result, it was noted that the unstable vibration
Yang et al. [3], for vertical vibration analysis of a cold rolling mill with four rolls, used a single degree of freedom vertical vibration system and for contact between work roll
2023年1月22日 Vibration issues of a five-stand tandem cold rolling mill were found in the steel production practice, and the experimental observation and numerical analysis indicated that the vibrations were related to the back-up roll bearing. The results were validated by replacing the back-up roll bearing with the new bearing resulting in 30% decline in
2.3. Nonlinear Coupled Vibration Model of Hot Rolling Mill Rolls. According to the structure diagram of the four-high hot rolling mill shown in Figure 1, we consider the structural constraints on the roll and the effect of
2023年2月20日 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
2014年10月23日 In this paper, vibration characteristics of a Vertical Roller Mill (VRM) are studied by using physical parameters of an operating VRM. The mathematical model is derived and simulated for a set of working parameters. Mechanical properties of the grinding material and the physical properties of the mechanical construction are used in the
C OUPLING VIBRATION MODEL FOR HOT ROLLING MILLS AND ITS APPLICATION. JIMIN W U, X IAOQIANG Y AN ISSN P RINT 1392-8716, ISSN O NLINE 2538-8460, K AUNAS, L ITHUANIA 1799 speed at entry and exit, respectively; ö 5, ö 6 and ö á are the strip entry angle, the strip exit angle and the neutral angle, respectively; R å is the roll
2021年1月19日 According to the viewpoint of nonlinear dynamics, the effect of nonlinear spring force and friction force those from hydraulic cylinder on the vibration of rolling mill system is studied [].In order to simplify the research, taking into account the symmetry of the structure of the four-roller mill, only the upper roll of rolling mill system is analyzed.
2006年10月24日 To study the basic cause of the unstable vibration, we first investigated the dynamic characteristics of the mill vibration in its stable state and its unstable state, using a small laboratory roller mill. This showed that the unstable vibration was due to the stick–slip motion of the rollers. Further, the modal analysis showed that the ...
2006年10月24日 The unstable vibration of the roller mill is known to be self-excited and to have a fundamental frequency which differs from the frequency inherent to the mill operation. However, so far as conventional research is concerned, very few studies about this unstable vibration have been carried out and the generation mechanism has not
Yang et al. [3], for vertical vibration analysis of a cold rolling mill with four rolls, used a single degree of freedom vertical vibration system and for contact between work roll and backup roll ...
2006年10月1日 In this paper, vibration characteristics of a Vertical Roller Mill (VRM) are studied by using physical parameters of an operating VRM. The mathematical model is derived and simulated for a set of ...
2023年1月22日 Vibration issues of a five-stand tandem cold rolling mill were found in the steel production practice, and the experimental observation and numerical analysis indicated that the vibrations were related to the back-up roll bearing. The results were validated by replacing the back-up roll bearing with the new bearing resulting in 30% decline in
2.3. Nonlinear Coupled Vibration Model of Hot Rolling Mill Rolls. According to the structure diagram of the four-high hot rolling mill shown in Figure 1, we consider the structural constraints on the roll and the effect of
2014年10月23日 In this paper, vibration characteristics of a Vertical Roller Mill (VRM) are studied by using physical parameters of an operating VRM. The mathematical model is derived and simulated for a set of working parameters. Mechanical properties of the grinding material and the physical properties of the mechanical construction are used in the
C OUPLING VIBRATION MODEL FOR HOT ROLLING MILLS AND ITS APPLICATION. JIMIN W U, X IAOQIANG Y AN ISSN P RINT 1392-8716, ISSN O NLINE 2538-8460, K AUNAS, L ITHUANIA 1799 speed at entry and exit, respectively; ö 5, ö 6 and ö á are the strip entry angle, the strip exit angle and the neutral angle, respectively; R å is the roll
2021年1月19日 According to the viewpoint of nonlinear dynamics, the effect of nonlinear spring force and friction force those from hydraulic cylinder on the vibration of rolling mill system is studied [].In order to simplify the research, taking into account the symmetry of the structure of the four-roller mill, only the upper roll of rolling mill system is analyzed.
2020年4月21日 He, W. Tao, and H. Xu, "A kind of ripple rolling mill roll system vibration detection control device and control method", CN110449469A, 2019. [22] Z. Wu, Z. Chong, and H. Dan, "A kind of external vibration simulation experiment porch of asymmetrical rolling", CN110523783A, 2019.
2006年10月24日 To study the basic cause of the unstable vibration, we first investigated the dynamic characteristics of the mill vibration in its stable state and its unstable state, using a small laboratory roller mill. This showed that the unstable vibration was due to the stick–slip motion of the rollers. Further, the modal analysis showed that the ...
analyzed. Actually, roller vibration will damage roll system stability and cause bearing horizontal or vertical vibration. erefore, the CSP four-high mill vibration characteristics were studied from the mill roll system stability and lateral dynamic behavior of the roll system in this paper. 2. Roller System Structure Stability Calculation
Yang et al. [3], for vertical vibration analysis of a cold rolling mill with four rolls, used a single degree of freedom vertical vibration system and for contact between work roll and backup roll ...
2016年11月8日 The mill stand housing is also involved in the vibration mode. There is very little deflection of the work roll barrels. This explains why the gauge variation is similar at all positions across the strip width. Self-excited mill vibration. There is a special class of vibration called self-excited vibration.
