Cutting of coils into sheets

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Cutting of coils into sheets

Nova Trading uses two lines for cutting stainless steel (also duplex) and aluminium coils into custom size sheets. One of them can cut material up to 10 mm thick and up to 2.150 mm wide, which distinguishes the line from other machines available on the market - it is the first line of this type in Poland.

The CTL lines cut metal coils into sheets of non-standard length. Manufacturers using steel or aluminium sheets, can order sheets of varying lengths according to their needs, which, by minimising waste, reduce the costs of production. The lead time for non-standard material are also reduced. Nova Trading S.A. delivers metal sheet with non-standard dimensions within one week.

   

 Line no 1

thickness of coils0,4 - 3,0 mm
width of coils / sheets400 - 1.600 mm
reduction of input coil's width max. 200 mm
enght of sheets400 - 6.700 mm
tolerancesEN ISO 9445 –  for cold rolled sheets
EN ISO 9444 – for hot rolled sheets*
weight of coils25 tonnes

 

*Please contact the Sales Department to obtain information on more precise tolerances

  

hala

CTL line  no 1


  

Line no 2

thickness of coils1,0 - 10,0 mm
width of coils / sheets500 – 2.150 mm 
no reduction of input coil width
lenght of sheets500 - 6.000 mm in “automatic mode” (automatic sheet discharge);   
500 - 12.000 mm in “manual mode” (manual sheet discharge)
tolerancesEN ISO 9445 – for cold rolled sheets
EN ISO 9444 – for hot rolled sheets*
weight of coils30 tonnes


* Please contact the Sales Department to obtain information on more precise tolerances


CTL line no 2


Straight angels while cutting

The lines have several additional facilities to increase the quality of the final product, including ensuring straight angles while cutting.

 

 

Flatness

One of the most important factors determining the quality of the sheets cut is their flatness. To ensure flatness, not only do we need to straighten the steel coil, but we also need to remove internal tension from the material, which is of paramount importance in the later treatment/processing. For instance, details cut by laser off a sheet from which internal tensioning has not been removed become deformed after cutting, or lose their shape during cutting, which makes processing impossible. Producers of the CTL- lines, based on years of experience, constructed its own levellers, which ensure that the parameters of the material cut are perfect.

 

Perfect sheet flatness without internal stresses:
– line no. 1 with ‘6 Hi LEVELLER FIMI’
– line no. 2 with two levellers – one for thickness 1.0 - 4.0 mm  and the second for thickness 4.0 – 10 mm

 

Protecting the surface of the sheet from damage

The quality of the surface of steel or aluminium sheet is essential for many customers. Any scratches or marks render the material useless for many applications. The CTL- lines have several solutions for protecting the surface of the sheet against damage at every stage – from the moment that the sheet is unfolded, through the transportation of steel sheet, right up to its final positioning on the pallet. To reduce the risk of surface demage, the producers of the lines changed the technology of coil cutting, removing the so-called ‘loop’ which is seen as the line’s critical point.

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