Roll upgrade services for board and paper machines

Roll upgrades

Upgrade services improves roll performance

Upgrade services provide improved roll performance and productivity by applying new innovations into your existing roll base. Valmet modular maintenance solutions such as upgrade services are especially targeted for critical process rolls e.g. deflection-compensated rolls and suction rolls in board and paper making. 


Valmet Maintenance Solutions

Benefits of upgrading an existing roll base:

  • Improved machine runnability
  • Improved machine efficiency
  • Extended machine time
  • Improved energy efficiency
  • Improved safety

One example of upgrades is Suction Roll Upgrade Seal Flow. With Seal Flow, it is possible to achieve savings of up to 50% on the water used in the showers (calculated for 9 meter shell length).

 

Comparison Water consumption l/s/m Water consumption m3/y Annual water cost
Original 0.22 59,900 EUR 59,500
SealFlo 0.11 29,250 EUR 29,950

Potential annual savings: EUR 30,000

 

Some of the latest suction roll innovations for added reliability, performance and energy efficiency:

Valmet Suction Roll Upgrade Lock Seal

  • Reduced power consumption 
  • Longer axial seal lifetime
  • Longer shell lifetime

Valmet Suction Roll Upgrade Seal Flow

  • Uniform seal lubrication
  • Reduced water consumption
  • Extended seal life

Valmet Suction Roll Upgrade Shell
Flow H

  • Cleaner shell through holes
  • Maximum dewatering capacity
  • Improved CD moisture profiles

Valmet Suction Roll Upgrade Edge Blow

  • Less breaks
  • Improved machine efficiency
  • Cleaner shell edge areas

Valmet Suction Roll Upgrade Edge Light

  • Fast and easy vacuum zone (CD & MD) positioning
  • Improved energy efficiency
  • Maximized dewatering

Articles

Roll change interval increased from one to two years with Lock Seal

Roll change interval increased from one to two years with Lock Seal

The Adolf Jass Fulda mill chose the Lock Seal axial seal technology developed and patented by Valmet. Nowadays it is a standard solution in Valmet's high-speed machines. Each existing roll including a competing product can be modernized with Valmet Lock Seal.