高速铝带轧机振动测试分析与振动机理研究  

Vibration Mechanism Analysis and Vibration Test of High-speed Aluminum Strip Rolling Mill

作　　者：王桥医[1] 王乾坤[1] 方敏[1] 冯长水[1] 赵勇 

机构地区：[1]杭州电子科技大学机械工程学院,杭州310018 [2]西南铝业(集团)有限责任公司,重庆401326

出　　处：《机械科学与技术》2013年第12期1850-1854,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51175133;11202061)资助

摘　　要：针对某大型企业2800四辊可逆式轧机出现的严重振动问题,为掌握轧机的振动规律并确定振源,进行了现场测试研究。从实际轧机机组运行中采集多物理过程的表现状态与过程信息,对轧机垂直系统振动特性进行了测试研究,确定了其振动机理和振源。采用六自由度简化弹簧质量系统建模对轧机固有特性进行了仿真分析。测试与分析表明:主导振动为轧机垂直系统的自激振动,确认振源在辊缝,确认辊缝多因素耦合导致的轧制过程动力学响应最为突出,得出了工作辊动力学行为的集中频带与核心频率。分析结果和诊断结论对于制定合理的结构动力学修改策略,消除轧机自激振动具有重要的意义。Aiming at the serious vibration problem of 2800 four-high reversible cold rolling mill, the vibration test study was made in this paper to master the rolling mill vibration law and determine the main vibration sources. The mill vertical system vibration characteristics were tested,and researches were made with the performance status and process information of multi-physical processes collected from actual mill unit operation to make sure the vibration mechanism and vibration sources. A simplified spring-mass system model with 6 degrees of freedom was used to make simulation analysis of the inherent characteristics of the mill. Test and analysis results show that： the domi- nant vibration is self-excited vibration in the vertical mill system; the key vibration source is confirmed in the roll gap ; and multiple variables of roll gap are considered to be the sensitive factors of the dynamic behavior of the roll- ing process, the concentrated band and core frequency for dynamic behavior of the work roll are obtained ; and the influence of the main parameters on the vibration is analyzed and compared. Analysis and diagnosis conclusions are very important to develop a reasonable structural dynamics modification strategy and eliminate mill self-excited vibration.

关 键 词：振动机理 振动测试 振源 辊缝 高速轧机 

分 类 号：TH133[机械工程—机械制造及自动化]