Carrier Roll for High Temperature Rolling
Disc Roll

AAMNo.

• 2055,2057,2055-3S,2055-HA

Disc Rolls are the punched discs from millboards, inserted in shafts and laminated, and then fastened and polished into conveyor rollers for high heat-treatment materials.
Millboards are made primarily of heat-resistant inorganic fiber and they are molded paper products manufactured with heat-resistant fillers and organic binders.

Features

• Demonstrates ongoing stability with stainless steel veneer lines at 1150-1200℃ for prolonged periods
• Exhibits moderate hardness and superior adiabaticity, with a firmness yielding outstanding abrasion resistance
• Minimal linear shrinkage enables stabilized conveyor functions without deformity over the long term.
• High adiabaticity preserves roll surface temperature, suppressing cooling energy loss from the shaft and contributing to energy conservation.

Usage

• Conveyor roller for high heat treatment material, for use with stainless steel veneer continuous annealing furnaces
• Conveyor roller for high heat treatment material, for use with a wide range of plate glass, slow-cooling furnaces

Physical Properties

(Physical Properties of Millboards for Disc Rolls)

• *The values in the technical data given above are typical test results and are not guaranteed.

Thermal Conductivity

Handling Precautions

• 1)
  Do not allow the Disc Rolls to absorb moisture.
  As the rolls absorb moisture easily, they should be stored in a dry location. They should not be exposed to rainwater and should not be kept in a humid location.
• 2)
  Rapid heating and cooling pre-/post-usage should be avoided.
  The roll should be installed in the furnace at 600℃ or less, and the prescribed temperature should be achieved over the course of 2-3 hours.
  Cooling should occur over a period of 3-4 hours until the furnace reaches a temperature of less than 500℃. Cooling should not occur rapidly.
  Note : Rapid heating/cooling can lead to cracks in the roll surface, impacting future use.
• 3)
  When used at a high temperature, the shaft (metal core) should be cooled.
  Note : Exact temperatures vary according to the shaft material and operating conditions, but approximately 700℃ is the approximate target. When cooling with water, coolant flow should be ample.
• 4)
  Mechanical shock should be avoided.
  Disc Roll surface is polished, and requires careful handling. In particular, note that after heating, Disc Roll loses some firmness.
• 5)
  Tools should not be suspended from the roll surface.
  Wires or slings suspended from the roll surface may cause damage.
• 6)
  A&AM cannot be held responsible for any failure caused by nonconformance to the above cautions, and/or any actions taken to obstruct proper performance of Disc Rolls.
• 7)
  Kindly refer to the Safety Data Sheet (SDS) before use.

Other

• Kindly refer to the Disc Material (millboard) Safety Data Sheet for further information on handling precautions or safety issues.