Modeling and adaptive vibration control for variable-length strip rolling systems with actuator faults and output constraints

Qian, Cheng; Hua, Changchun; Zhang, Liuliu; Ahn, Choon Ki

doi:10.1007/s11071-023-08769-0

Cited by 1 publication

(1 citation statement)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, current twenty-roll Sendzimir mills still have certain vibration issues. Rolling parameters such as the rolling tension and rolling force [26,27], rolling lubrication, and roll gap conditions [28,29] may all be causes of vibration. Zhong et al [30] and Kim et al [31] studied vibration marks but have not yet discovered the vibration characteristics and mechanisms of these marks.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution and Mechanical Behavior of Pure Aluminum Ultra-Thin Strip under Roller Vibration

Zhang,

Li,

et al. 2024

Metals

View full text Add to dashboard Cite

As the demand for lithium-ion batteries increases, higher quality requirements are being placed on pure aluminum ultra-thin strips, one of the main materials used in lithium-ion battery current collectors. Roller vibration during the rolling process of pure aluminum ultra-thin strips is unavoidable and significantly affects the quality of the strips. This paper uses 1A99 pure aluminum ultra-thin strips as raw materials and employs a controlled vibration method during the rolling process to obtain products under two conditions: stable rolling and vibrational rolling. The surface and cross-section of the aluminum strips were characterized using scanning electron microscopy (SEM), and the microstructure of the surface and cross-section was studied using electron backscatter diffraction (EBSD) technology. The results show that, during stable rolling, the surface quality of the aluminum strip is good without defects. Under vibration, obvious vibration marks appear on the surface of the aluminum strip, showing characteristics of peaks and troughs. With the increase in strain at the trough position, there is a transition from low-angle grain boundaries to high-angle grain boundaries, and the grain size is uneven at the peak and trough positions, with noticeable grain refinement at the troughs. At the same time, under the influence of vibration, the aluminum strip induces a different texture morphology from conventional rolling. Due to the different plastic strains at the peak and trough positions, a texture alternation phenomenon occurs at these positions. The tensile test results indicate that aluminum strips exhibit poor mechanical properties under roller vibration, with the reduction in mechanical performance primarily attributed to the uneven microstructure distribution caused by roller vibration.

show abstract