Varaoke International Oy

https://varaoke.eu/products/board-machines/voith-papermachine-6650mm-sc-newsprint-400-tpd/

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Varaoke International Oy
Business ID: 0925191-4
Kullervonkatu 20 B 112
33500 TAMPERE
Tel: +358 10 292 2090

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Harri Aikio
Kullervonkatu 20 B 112
33500 TAMPERE

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VOITH Papermachine 6650mm (SC/ Newsprint) 400 tpd

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  • Product ID: VAK10904
  • Name: VOITH Papermachine 6650mm (SC/ Newsprint) 400 tpd

Manufacturer Voith
Type SC-Paper Machine (Magazine) Twin-Wire
TECHNICAL DETAILS:
Capacity: 400tpd
Trim width: 6650 mm
Year Made 1963
Speed 1000 mpm

REBUILDS:
1975- Press section
1983- Rebuilt to produce SC Magazine paper
1997- Wire section, by Valmet

Description Products: Mainly SC-paper for example Magazine paper, for both offset and gravure printing, weights 49-60 gsm, jumbo rolls up to 4 tons.

Basement design paper machine producing lightweight printing papers with recent wet end and dryer major rebuild in 1983. New wet end in 1997 by Valmet.

Machine is right hand drive from the flowbox with a sectional electric drive.

Grammage range 49 to 100 gsm. Average running grammages 52 to 55 gsm.

Average production at 54.3 gsm and machine speed 1013 m/min is 433 t/day.

Machine efficiency approximately 85%.

Average operational speed 1000 to 1050 m/min.

The machine house has two cranes and one will be retained with the building. DCS Valmet Dematic VME stations rebuilt. Modern heat recovery system. Steam system pressures 10/6/2.5 bars.

Soleplate centres 7850mm and deckle after the rewinder 6650mm.

Design speeds:

Wire 1400m/min

Press section 1000 m/min

Dryer section 1000 m/min

Press section 1000 m/min

Dryer section 1000 m/min

Machine drive designed maximum speed 1200 m/min

Approach flow:

Metso Deculator

LD cleaners in three stages.

Groundwood refiners: two Metso JC-01 conical refiners.

Kraft pulp refiners: two Voith SDM-1 refiners with 30” diameter discs.

Back water fibre recovery by Nash vacuum assisted by Hedemora disc filter.

Four pressure screens prior to the headbox. Reject pressure screen in basement. Three Voith model GR21 pressure screens year 1983 hole size 1.8 mm and one MODUScreen H3 with by Ahlstrom R with 0.25 mm slotted basket. Reject screen Tampella model 24P.

Machine has a variable speed fan pump.

Wire section:

Flowbox Valmet HHSD 7080 mm slice width, dilution control , auto slice control actuators (total of 117).

Valmet Speedformer: model HSS.

Wire width: 7260mm

Soleplate centres: 7850mm

Dryness after the wire: 19%.

Press Section:

Three press sections.

First and second press of Voith manufacture: double press rebuilt 1975.

Third press: Valmet SYMZS.

Dryness after press sections: 49 to 50%

Press maximum loadings: 55 kN/m first press, 100 kN/m second press and 130 kN/m third press.

Dryer section:

The Voith manufactured dryer section in enclosed hood by Voith/Valmet in 1983, with front lifting doors. Total of 60 dryers, all on A/F bearings with auto lub system.

Auto felt guiding and tensioning, steam and condensate at the rear of the dryers, sheathen rope tail feed, operational pressure 2.5 bar. As indicated the dryer section had a complete rebuild in 1982 where it was totally removed, new bearings fitted, painted, parts repaired and rebuilt, repainted etc.

Calender:

The calender has only one roll remaining and is used as a lead roll for the Honeywell moisture spray system. This section has an air transfer system from dryers through to the reel up.

Scanner: Metso IQ measuring gsm, profile, and ash.

Pope reeler:

Voith horizontal reel up, rebuilt 1983, hydraulic operation, reel spool store above reel up, reel shell accelerator, maximum reel diameter 2000mm. Reel transfer crane to the rewinder.

Vacuum pumps:

Nash 2001, 2001, 6002, 6002, 6002, 6002, 6002, 6002, 6002, 9001 and 9001.

Winder:

Wärtsilä rewinder: seven roll stations, centre reel design, reel shell unwind, design speed 2000 m/min, auto knife setting, tension control, normal finished reel width 2600 mm, maximum roll weight 3500 kg. Deckle after the rewinder 6650 mm.

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