Pay attention to small details for big improvements — Performance enhancement case of Huazhong Shanying PM23
Jan 21, 2025
In the papermaking process, a well-functioning air system is necessary to ensure the operational reliability of the production line. The Valmet Press Run Web Stabilizer is used between the press section and the first group of drying cylinders in medium and high-speed paper machines. It is an essential component designed to keep the web in good contact with the fabric, enabling higher operating speeds with less draw between the press and dryer sections.
However, even the most efficient equipment requires regular maintenance. In practice, a lack of effective regular maintenance of web stabilizers can lead to issues such as edge drop and ineffective tail threading. Further challenges that can occur include insufficient vacuum, insufficient air volume and pressure, clogged filters, valve opening and mechanical conditions, fan speed and impeller conditions, damaged ductwork and leakage, and clogged blowing nozzles.
Case Study: Huazhong Shanying PM23
After having been in operation for a long time, the of Huazhong Shanying PM23 experienced edge drop and threading difficulties. After evaluating the issue, the PM23 team decided to contact Valmet for advice. Following Valmet’s on-site service and optimization adjustments, the vacuum level of the stabilizer significantly increased, eliminating the edge drop phenomenon and stabilizing the operation.
Testimonials from Huazhong Shanying and Valmet
PM23’s Valmet Press Run Web Stabilizer has been in service for many years and needed maintenance. The cooperation between Valmet and our PM23 team was a very positive experience. After Valmet carried out on-site service and optimization of the system, we observed a significant increase in the vacuum level of the stabilizer and a substantial improvement in paper stability. Currently, our paper machine runs more smoothly, and production efficiency has significantly improved. We are highly satisfied with their professional capabilities and quick response.” — Lü Wenlang, Deputy Production Manager, Huazhong Shanying Paper Co., Ltd.
In the Huazhong Shanying PM23 paper machine project, our team faced some challenges on-site but still successfully improved the Valmet Press Run Web Stabilizer performance, ensuring the stability of the paper during production. We were able to showcase the strength of Valmet’s technology and our understanding of customer needs. We are pleased to see our efforts bring tangible benefits to our customers. We look forward to continuing our cooperation with Huazhong Shanying, jointly promoting more technological advancements and innovations.” — Hu Xiaoming, Senior Engineer, Paper Mill Optimization and Retrofit Services, Valmet Service Business Line
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