HOW  APT POLYSPUN MILL ROLL WORKS
  • In the picture to the left, the yellow circle is the APT POLYSPUN Mill Roll.
  • The strip is running from right to left. The mill rolls job is to keep the brown fluid on the right side of the roll and level the left side dry.
  • The P (in the blue arrow pointing down is for pressure)is the shaft going through the mill roll and applying pressure evenly on either side, down on the strip or plate. 

​HOW IT WORKS!
#1 - The porous cover absorbs part of the fluid reducing the hydraulic pressure.
#2 - Porous surface absorbs the fluid, like a sponge when the pressure decreases
#3&4 - When the cover is compressed again, it gives off the absorbed fluid.

WHERE DO YOU FIND MILL ROLLS IN YOUR PROCESS LINE

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WRINGER / SQUEEGEE ROLL 
  • Excellent wringing / squeezing performance
  • Up to 95% reduction in carryover of solutions compared to rubber or polyurethane coated rolls
  • Up to 100 times longer life in comparison with rubber or polyurethane coated rolls
  • Normally a drive motor is not required 
  • No hydroplaning
  • Non-marking roll surface
  • No scratching of the work piece surfaces
  • Roll surface is resilient and extremely resistant against cuts from work pieces
  • “Self-healing effect” of the roll covering in case of cuts caused by strip edges, tack welds, or welding seams
  • Very long life
BREAK, BRIDLE, STREERING, TRANSPORT, PINCH, DEFLECTOR, TENSION ROLLS
  •  APT Polyspun Rolls build up controlled tension levels due to their high frictional values
  • Rubber, polyurethane, and steel rolls do not have enough friction to produce sufficient tension
  • Leads to marks or scratches caused by speed differences between roll and strip, Common when strip is wet or oiled
  • This is caused because the roll surface is not porous and a liquid film forms causing aquaplaning
  • APT Polyspun fiber covering have up to a 40% void volume
  • The solution is absorbed creating better contact and thus a higher frictional value
STAINLESS STEEL Z-MILLS
  • In intermediate passes, there are line speed limitations because too much oil left on the strip, produces bad edges when recoiling, this also lead to high oil consumption
  • On the final pass, when up-coiling, too many fines and oil on the strip surface, will create issues in the degreasing section on the next coil processing line
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OILER ROLLS
  •  Applying a definable streak-free oil film
  •  Easy control of the oil film by adjusting the contact pressure of the rolls
  •  Up to 50% lower oil consumption
  •  Non-marking roll surface
  •  No scratching of the work piece surfaces
  •  Roll surface is resilient and extremely resistant against cuts from work pieces
  •  Very long life
  •  Cleaner line / plant
  •  Safer line / plant
DE-OILER ROLLS 
  • Very effective and uniform squeezing of oil or emulsion
  •  Control of the residual oil film by adjusting the contact pressure of the rolls
  •  No aquaplaning / hydroplaning effect
  •  Non-marking roll surface
  •  No scratching of the work piece surfaces
  •  Roll surface is resilient and extremely resistant against cuts from work pieces
  •  Long life
  •  Cleaner line / plant
  •  Safer line / plant
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Coil Coating Lines

  • Wringer/Squeegee rolls in rinse stations of pre-treatment and cleaning sections 
  • Wringer/Squeegee rolls in final rinse stations after coating/  painting/lacquering 
  • Deflector rolls 
  • Tension/Bridle rolls 
               Hot Dip Galvanizing Lines 

  • Wringer/Squeegee rolls in rinse stations of pre-treatment and cleaning sections 
  • Wringer/Squeegee rolls after water quench 
  • Wringer/Squeegee rolls after wet temper mill 
  • Wringer/Squeegee rolls in rinse stations of after- treatment section 
  • Oiler rolls 
  • Deflector rolls 
  • Tension/Bridle rolls 
Electro-Galvanizing Lines

  • Wringer/Squeegee rolls in rinse stations after degreasing/ cleaning sections
  • Wringer/Squeegee rolls in brushing machines
  • Wringer/Squeegee rolls in rinse stations after pickling/ after galvanizing / 
  • After phospating
  • Oiler rolls
  • Deflector rolls
  • Tension / Bridle rolls
Cold Strip Mills / Reversing Mills / Sendzimir Mills

  • De-oiler rolls (entry and exit side)
  • Emulsion wringer / squeegee rolls (entry and exit side)
  • Oiler rolls before recoiler
  • Pinch (Driving) rolls
  • Cleaning / wiping rolls on back-up rolls
  • Speed-o-meter rolls / measuring wheels
Continuous and Push Pickling Lines

  • Wringer / Squeegee rolls in final rinse stations before strip drier
  • Wringer / Squeegee rolls in rinse stations
  • Oiler rolls
  • Pinch (Driving) rolls
  • Tension / Bridle rolls
Continuos Annealing Lines

  • Wringer / Squeegee rolls in rinse stations after degreasing / cleaning sections
  • Wringer / Squeegee rolls in brushing machine
  • Wringer / Squeegee rolls after water quench
  • Wringer / Squeegee rolls in final rinse stations
  • Oiler rolls
  • Deflector rolls
  • Tension / Bridle rolls
Slitting and Cut-to-Length Lines

  • Brake (Tension) rolls
  • Oiler rolls
  • Feed rolls
  • Pinch (Driving) rolls
Punching / Stamping and Embossing Lines

  • Feed Rolls
  • Pinch (Driving) rolls
  • De-oiler rolls
  • Oiler rolls
Tin Plating Lines

  • Wringer / Squeegee rolls in rinse stations of pre-treatment and cleaning sections
  • Wringer / Squeegee rolls in final rinse stations after tin plating
  • Oiler rolls
  • Deflector rolls
  • Tension / Bridle rolls
Cleaning Lines 

  • Wringer/Squeegee rolls in rinse stations 
  • De-oiler rolls before cleaning section 
Strip and Blank Washers

  • Wringer / Squeegee Rolls
  • De-oiler Rolls
  • Oiler Rolls
  • Entry Feed Rolls