DPIC CHILL ROLLS ( Double Poured indefinate Chill )  
 

 

 
 

The working surface of Clear Chill Rolls shows the white graphite free structure consisting of eutectic carbide and transformed austentite. This gives a hard layer which confers good resistance to wear. The core and neck are made upon steel shaft in specialized double poured centrifugally cost chill rolls barrels.

 
     
 

Compared to grey iron, white chill iron is less soft, strong and incapable of withstanding high dynamic stresses, but owing to its greater hardness, has better wear-resistance, and has high compressive strength. It retains a fair proportion of its strength at elevated temperature, for example, in hot rolling. These make excellent work steel re-rolling mills, semi-automatic or Automatic plants, Wire roll plants, TMT plants,  Roughing mill rolls, Intermediate

mill rolls for two, three and four-high mills, turning out of high grade ferrous and non-ferrous sheet and strip or section. High Alloy Clear Chill Rolls have proved well suited for the finishing stand of rod and light section mills, for continuous small and medium hot strip mills, and for strip mills of older design.

 
     
 
Applications:

::

Pressure Rolls of Corrugated

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Handling Of thermal Plants

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Wear resistant paper board and corrosion resistant castings for petrochemical and ash

::

Ni-Hard BullRings and Castings for coal pulverising in Thermal Plants

 

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Diameter

:

up to 610 mm

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Length

:

up to 1800 mm

 
     
 
Material Specifications: 
Material Process Hardness

::

Grey Cast Iron

Centrifugal spun Cast

180 - 300 HB

::

Chilled Cast Iron

Centrifugal spun Cast

450 - 550 HB

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Ni-Hard

Centrifugal spun Cast

500 - 650 HB

::

Spheroidal Cast Iron

Static Cast

200 - 350 HB

 
     
 
CHEMICAL COMPOSITION MECHANICAL PROPERTIES

U.T.S.

Impact

Hardness

C

Si

Mn

Cr

Ni

Mo

kg/mm²

kg.m/cm²

Shore°C

3.00 - 3.40

0.20 - 0.90

0.25 - 0.60

0.20- 0.50

1.00 - 2.00

0.25 - 0.35

20 - 27

0.20 - 0.25

55 - 70

3.20 - 3.60

0.20 - 0.80

0.20 - 0.60

0.20 - 0.50

1.70 - 2.50

0.25 - 0.40

20 - 27

0.20 - 0.25

70 - 75

 
     
     
 
 
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