Paper Machine Supercalender Vibration Analysis with a DSPcentric, Multichannel Dynamic Signal Analyzer

摘要

Paper machines structures and components are notorious for being susceptible to vibration problems. Supercalender sections are perhaps some of the most glaring examples of these issues. These sections are used to impart very high quality surface characteristics to finished paper for optimal printing results. Denim and poly-covered rolls used in supercalender operation are designed to deform in the nip, leading to very difficult to troubleshoot vibration problems. While a variety of condition monitoring strategies have been adopted by the industry in general, they have typically fallen woefully short in the complete diagnostics of supercalender vibration issues. This paper discusses a real-time, DSPcentric dynamic signal analyzer, capable of a unique blend of rotating machinery and structural analysis measurements with simultaneous raw data recording and several dynamic test strategies that were employed to deliver dramatically superior results in the successful characterization and resolution of vibration issues that have long plagued such machinery.