Location |
Orient Paper Industries, India |
Challenge |
Tissue machine
- The machine was designed to run at 1800 mpm but it was not possible to increase the machine speed to more than 1200 mpm due to vibrations.
Paper machine
- The machine was designed to run at 585 mpm but it was not possible to increase the machine speed to more than 420 mpm due to vibrations
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Solution |
By conducting an audit Valmet checked the mechanical stability of the machine components and drive capacity for operating at design speed by:
- Alignment check for rolls and drive shaft for the tissue machine
- Vibration audit for main machine components
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Results |
Tissue machine
- Rolls and drive shafts misalignment were corrected, and the machine was tested for speed trials up to 1800 mpm without paper
- Machine speed increased up to 1500 mpm with an average increase of 20 tonne per day produced
- A recommendation to rebalancing of some rolls were made
Paper machine
- After conducting the vibration audit, it was evident that the machine has a drive capacity to operate at design speed of 585 mpm
- To reach design speed the recommendation was to carry out roll balancing and stretchers required for ramping up the speed to design speed
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Key words |
Board and paper, tissue, Asia-Pasific, improvements |