Presentation 103, March 2006

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Woven Wire
Presentation 103, March 2006
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Woven Wire From Major Wire

• Major Wire offers two types of woven wire
• Tempered OptimumWire
• 304 Stainless Steel

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High Carbon Wire

• Nearly all non-stainless wire sold in the
  aggregate industry is high carbon wire with
  various metallurgical content.
• How the wire is processed can have a significant
  effect on the performance and wear life of the
  screen cloth.
• There are 3 common forms of wire processing
• Cold or hard drawn wire
• Oil tempered wire (stress relieved)
• OptimumWire patent wire, tempered and stress
  relieved

OptimumWire is a registered trademark of Major
Wire Industries Limited
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1. Hard Drawn Process
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2. Oil Tempered Process
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3. OptimumWire
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(No Transcript)
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Hardness
The harder the wire, the more resistance it has
to abrasion and wear.
.250 wire diameter
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Ductility
Refers to the flexibility of the wire, how well
the screen will handle impact and twisting.
.250 wire diameter
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Tensile Strength
The higher the tensile strength, the more
resistance to stretching or snapping.
.250 wire diameter
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Major Wire uses only Patent process tempered
OptimumWire for both its woven wire Flex-Mat
high-carbon wire products.
Wire is heated red and then slowly cooled in a
proprietary process before drawing.
Slow cooling by special process
Heated red
Elongated molecules near the surface.
Rounded molecules in the center.
Wire is stressed relieved prior to drawing.
Excellent tensile strength, hardness and
ductility.
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OptimumWire In High Impact Applications

• Major Wire uses a specialized wire for wire
  diameters of 7/16, 1/2, 5/8 and 3/4. These
  larger wire diameters have a different
  metallurgical content than smaller-diameter
  OptimumWire.
• Manganese is added to the wire content. Manganese
  work hardens and this increases wear life as it
  becomes more abrasion resistant and is better
  able to withstand impact loads.

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Stainless Steel Wire Cloth

• There are many versions of stainless steel wire
  cloth available the version chosen depends upon
  your specific screening application.
• The most commonly used stainless steel in
  aggregates is 304 stainless. This is a
  non-magnetic alloy that withstands rusting when
  exposed to the elements.
• Stainless steel normally polishes as it is used
  in aggregate applications. The smooth surface
  makes it ideal for sticky or dusty applications.

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Stainless Steel Wire Cloth

• Some competitors offer 430 stainless wire screen
  cloth versus 304 in an effort to reduce their
  selling price.
• 430 stainless offers the same hardness tensile
  strength.
• However, it has significantly less ductility,
  which can will cause premature wear.

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Hardness
The harder the wire, the more resistance it has
to abrasion and wear.
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Tensile Strength
The higher the tensile strength, the more
resistance to stretching or snapping.
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Ductility
Refers to the flexibility of the wire, how well
the screen will handle impact and twisting.
Significantly different
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Woven Wire Types

• Major Wire offers 5 types of woven wire cloth.

Square Opening
Double-Weave
Single Shute
Triple Shutes
HyperSlotTM
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Square Opening

• Most commonly used screen type.
• Provides a precise passing product.
• For aggregate, Major Wire offers wire diameters
  of .047 to .750.
• For aggregate, we stock from 1/8 square opening
  to 4 square opening.
• For fine screening, we offer openings from 8 to
  500 mesh count per inch.
• 20 hook designs to choose from, and available in
  flat sheets.

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Double-Weave

• Handles impact better than single-wire cloth.
  Can withstand 3 to 4 times the impact force of
  single-weave cloth.
• Lower crimp provides longer wear life.
• Provides more open area than punch plate (up to
  50) and increases production.
• Can handle feed materials up to 16. Perfect for
  pre-scalping or scalping 6 to 12 rock.
• Available in openings of 1.25 to 5 with wire
  diameters of .243 to .500.
• An innovative screening solutions product for
  your customers.

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Single Triple Shute Slotted Cloth

• Common before the introduction of
  self-cleaningscreens.
• Should not be used where precise sizing is
  required.

• Typically used where blinding is a problem.
• Does allow oversize material to pass.

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HyperSlotTM

• Openings of 6 to 24.
• Commonly used to remove large amounts of fines or
  wherever there is a severe blinding problem.
• Major Wires unique design uses alternating
  crimped straight wires.

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HyperSlotTM

• Great for de-sanding or removing large amounts of
  fines.
• Major Wires unique design offers 3 benefits
• Crimped wires tend to slow material down so that
  it has more chance to come in contact with
  openings in the screen cloth.
• Crimped wires tend to roll the material, which
  does a better job of removing fines.
• With alternating crimped and straight wires, the
  screen cloth does allow for some vibration.
  This improves the products ability to reduce
  blinding in comparison to all straight wire
  slotted cloth.
• Another innovative screenings solution product
  for your customers from Major Wire!

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Major Wire Woven Wire

• Woven Wire Part of your screening solutions
  program for your customers.

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• THANK YOU!