Influence of the natural aluminium oxide layer on ... - ALU-WEB.DE

<strong>the</strong> following developments and desires <strong>of</strong> <strong>the</strong>
customers:
• continuously higher speeds <strong>of</strong> <strong>the</strong> single
machines
• fur<strong>the</strong>r reduction <strong>of</strong> non-productive times
• highly sensitive materials, which require a
more specialized design
• trend to smaller batch sizes
• increasing demand for integrated
additional functions such as simultaneous
oiling or perforation for fur<strong>the</strong>r processing
• growing importance <strong>of</strong> resource efficiency,
here reduction <strong>of</strong> <strong>the</strong> energy consumption
• high operational safety as strict side
condition.
Considerable conflicts <strong>of</strong> objectives result in
optimization problems which require innovative
solutions.
Achenbach Optifoil product line
Achenbach’s response is a system <strong>of</strong> nine basic
machine types: As ‘Optifoil’ product line,
<strong>the</strong>se machines types are <strong>the</strong> basis to fulfil all
slitting jobs for a wide variety <strong>of</strong> materials:
tailored to <strong>the</strong> individual customer’s needs,
highly-productive and in top quality, especially
with regard to <strong>the</strong> straight-edged finished
roll rewinding and absolutely clean cuts:
• Optifoil Varioslit – <strong>the</strong> flexible all-rounder
for all foil slitting jobs
• Optifoil Varioslit Plus – <strong>the</strong> high-produc-
tive all-rounder for all foil slitting jobs
• Optifoil Fibreslit – <strong>the</strong> specialist for slitting
tasks in <strong>the</strong> paper and textile industry
• Optifoil Jumboslit – <strong>the</strong> specialist for all
slitting jobs <strong>of</strong> jumbo rolls
Optifoil Jumboslit
• Optifoil Inspector – <strong>the</strong> specialist for
surface control
• Optifoil Lightslit – <strong>the</strong> slitting specialist for
thin metal foils
• Optifoil Heavyslit – <strong>the</strong> slitting specialist
for thick metal foils and large roll diameters
• Optifoil Separator and Doubler for
producing even thinnest metal foils.
The brand name Achenbach generally represents
<strong>the</strong> following quality features:
• complete reliability resulting from
superior quality <strong>of</strong> all components
• first-class measuring, drive and control
components
• energy-saving and emission-minimized
engineering
• maximum availability by online fault
diagnosis as well as service and support
during <strong>the</strong> whole operational period
• effective operation and easy maintenance
due to modular design.
Success factors in foil slitting technology
In principal five key factors are setting <strong>the</strong>
trends for <strong>the</strong> quality <strong>of</strong> slitting technology:
(1) Optimum slitting quality at highest speeds
Robust design: It is one precondition and is
mainly reflected in <strong>the</strong> mechanical design <strong>of</strong>
<strong>the</strong> single components such as bottom knife
shaft, bottom knife slitting tools and top knife
selection as well as <strong>the</strong> definition <strong>of</strong> <strong>the</strong> slitting
tool diameter; in both cases, a special design is
inevitable. Regarding <strong>the</strong> design <strong>of</strong> <strong>the</strong> slitting
tools, a too high moment <strong>of</strong> inertia is to be
avoided on <strong>the</strong> one hand. On <strong>the</strong> o<strong>the</strong>r hand,
ROLLING INDUSTRY
<strong>the</strong> smooth run <strong>of</strong> <strong>the</strong> slitting unit in continuous
operation at maximum speeds is to be
secured.
Manifold fine adjustment: The fine adjustment
with a slitting geometry tailored to <strong>the</strong>
respective material is decisive for <strong>the</strong> excellent
slitting quality; for this purpose Achenbach
<strong>of</strong>fers optionally an electronic setting device
realized by a positioning device. By means <strong>of</strong>
this or <strong>of</strong> <strong>the</strong> 4-axes-setting, <strong>the</strong> slitting tools
can be adapted even to <strong>the</strong> most difficult material
features in <strong>the</strong> setup time <strong>of</strong> <strong>the</strong> machine.
This manifold fine adjustments are especially
important for highly-sensitive materials such
as s<strong>of</strong>t <strong>aluminium</strong> or multi-<strong>layer</strong> composite
materials.
Highest precision: Even if highest precision
with slitting tolerances < 1/100 mm is required,
<strong>the</strong> use <strong>of</strong> slitting cassettes is advantageous to
guarantee <strong>the</strong> perfect cut at high speeds. This
especially goes for slitting tasks with higher
material thickness.
(2) Highest reliability at
maximum machine utilization
This is guaranteed by <strong>the</strong> robust design <strong>of</strong>
<strong>the</strong> machine frame as any kind <strong>of</strong> vibration
is safely avoided. The principle <strong>of</strong> stability is
also a must-have for purchase parts, i.e. only
high-class quality drive components, slitting
and winding tools, etc. are used. The highly
efficient use <strong>of</strong> <strong>the</strong> installed energy performance
as well as <strong>the</strong> optimum interaction <strong>of</strong> all
mechanical, electric and hydraulic modules
is ano<strong>the</strong>r advantage. The integrative quality
control according to DIN ISO 9001, which
continuously checks <strong>the</strong> in-house manufactured
components as well as purchase parts,
represents <strong>the</strong> first-class mechanical engineering
Achenbach is standing for. The customers’
benefits are extremely high machine speeds
and process stability.
(3) Quick finished roll handling
Highest process speeds are <strong>the</strong> first factor for
high productivity, low non-productive times
<strong>the</strong> second. With an increasing degree <strong>of</strong> technology
and decreasing batch sizes, <strong>the</strong> aim <strong>of</strong>
reducing <strong>the</strong> non-productive times becomes
more and more important. That means to
facilitate an optimum handling cycle for <strong>the</strong>
customer. Achenbach <strong>the</strong>refore <strong>of</strong>fers a wide
product range including roll handling, roll turret
and roll stripping devices, which simplify
<strong>the</strong> handling by combining automatic material
clamping and integrated cross-cutting units. In
order to quicken <strong>the</strong> finished roll handling
<strong>the</strong>re are special handling devices for heavy
weights and for small rolls. Perfectly combined,
<strong>the</strong> result is a fully-automatic handling cycle
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