Paper - Cardboard

This business sector has to cope with high productivity requirements linked to the costs of raw materials, high energy consumption and increasing regulatory and environmental requirements.

Predictive maintenance of equipment

Multi-technical monitoring of paper machines and their auxiliaries by vibration analysis, infrared thermography, electrical analysis, oil analysis, US ... makes it possible to monitor the state of health of the machine fleet in order to anticipate maintenance operations and avoid damage.

This is particularly useful in such a continuous process, where there is little room for manoeuvre in terms of maintenance planning.

The various variables measured offer the possibility of making correlations between them and therefore provide unparalleled monitoring reliability.

Diagnosis of manufacturing faults

The manufacture of paper or cardboard is an operation which brings into play significant static and dynamic forces. These stresses, coupled with the thinness of the product, mean that the slightest fault can lead to sheet breaks, vibrations, markings on the rolls or manufacturing faults such as variations in thickness.

When this happens, various analyses can be carried out depending on the issue to analyse the dynamic behaviour of a press section, for example, and thus decide on the origin of a fault:

  • Vibration, electrical and instantaneous rotation speed diagnosis
  • Analysis of the dynamic behaviour of the structure, resonance  
  • Analysis of grammage fluctuations and search for the causes  
  • Diagnosis of press coating faults
  • Search for regulation faults  

Turnkey protection and motoring solutions

The most critical installations in this sector require monitoring systems to be installed, in order to detect the slightest anomaly or damage as quickly as possible, with the main aim of limiting production losses and avoiding downtime.

Setting up an online monitoring system involves carrying out a preliminary study to define its characteristics.

Dynae will then be able to offer a turnkey solution combining the supply, installation, configuration and acceptance phase, including operator training how to use the system. Nothing is left to chance to ensure optimal operation of the monitoring system, ensuring results.

Generator set diagnosis

We step in to carry out a health check on all types of equipment: Pelton, Francis, Kaplan.

The measurements are carried out in accordance with 10816-5 and 7919-5 standards. They relate to the diagnosis of mechanical, electrical and hydraulic faults, based on vibration and electrical measurements, and sometimes torque and pressure pulsation measurements.

The measurements are carried out over the turbine’s entire operating range: no-load not excited, excited, quarter load, half load, full load.

Transient phases are also recorded.

Consulting and training

Drawing on its considerable experience in the paper and cardboard sector, Dynae has developed specific training courses to help its customers take into consideration and resolve the dynamic issues specific to this sector, such as:

  • MAP-specific course in the Dynae training catalogue
  • Intra-training courses and consulting mission aimed at optimising predictive maintenance