Stunning results with Valmet Hirun Web Stabilizer 4E at Orora Botany mill
May 3, 2016
The Orora's Botany mill in Sydney, Australia, has been ambitious about the performance and it has aimed to be within top board mills worldwide, in terms of tonnes per meter. Shortly after the upgrade with Valmet Hirun Web Stabilizer* blow boxes B9 broke its daily production record and the machine is now regularly running at 11.5 t/m/h.
Sheet stability – creasing and edge lifting – in the early pre-dryer section has been a major time efficiency factor for us at high machine speeds. After the upgrade with Valmet Hirun Web Stabilizer boxes the topic is completely resolved – we are now regularly running at 11.5 t/m/h with the sheet being completely flat and seal maintenance is a non-issue. Best investment we have done for a while…”
Karl Achleitner, General Manager, Operations
SUMMARY
Location
Botany, New South Wales, Australia
Customer challenge
Sheet stability (creasing and edge lifting) in the early pre-dryer section was a major time efficiency factor at high machine speeds.
Solution
Hirun web stabilizer rebuild comprising four new Valmet Hirun Web Stabilizer 4E blow boxes, two new Valmet Hirun Web Stabilizer 2E blow boxes and relocating of three old Valmet Hirun Web Stabilizer 2 blow boxes. The relocated hirun web stabilizer 2 blow boxes were maintained and upgraded to e-model as well.
Results
Stable web run, higher speeds and fewer breaks in the first group. The machine is now regularly running at 11.5 t/m/h.
Keywords
Board and paper, Asia-Pacific, rebuilds and upgrades
