Aug 13, 2019
After a previous PM6 rebuild project in 2012, IKPP Perawang Mill was looking for opportunities for further improvements in the machine runnability and performance. Cooperation with Valmet started and the desired improvements were found through a comprehensive review of the doctoring process.
|The primary goal of the project was to boost machine runnability and performance and find potential areas for improvement.
|Valmet checked and documented the current status of all doctoring positions with the help of several on-site studies. Based on the findings, an improvement plan was made to cover the whole doctoring process.
|The improvement plan has enabled a better doctoring result, reduced doctoring-related downtime and facilitated holder maintenance operations. Optimization of the doctor blade types has also reduced the customer’s net working capital tied to the doctor blade inventory
|Board and paper, Asia-Pacific, doctoring
Doctoring affects machine runnability, paper and board quality, production costs, and production efficiency. Runnability can be improved by optimizing doctoring parameters and blade materials. Cleaner rolls result in better end-product quality. The blades can be selected to meet customers shutdown schedule which will lead to fewer blade changes resulting in lower blade costs. The reduction of unplanned shutdowns and costly downtime periods can be avoided by reliable and trouble-free doctoring.