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PF 102

Alloy indefinite chilled cast iron rolls (rings) with distinct character of contain minute graphite on their surface layer are different from chilled cast iron rolls (rings). The graphite dispersed in the whole barrel's cross-section, its amount and sized increase with depth. We manufacture this type of rolls (rings) by adding Mn, Cr, Ni, Mo and other alloy elements, with present of minute graphite, the roll (rings) can be ensured being raised the properties of resistance to spalling, firecrack and wear resistance while maintaining the surface hardness almost no drop. The biting ability is also improved owing to the existance of minute graphite porosity.

Microstructure:


Matrix 500X pearlite+ Carbide

Matrix 500X fine pearlite+ a little of bainite+carbide
 Chemical Composition (%)
Symbol Material
C
Si
Mn
Cr
Ni
Mo
IC-1 CrMo indefinite
2.9-3.7
0.6-1.2
0.4-1.2
0.6-1.2
0.2-0.6
IC-2 NiCrMo indefinite
2.9-3.7
0.6-1.2
0.4-1.2
0.7-1.2
0.5-1.5
0.2-0.6
IC-3 NiCrMo indefinite
3.0-3.7
0.6-1.2
0.4-.1.2
0.7-1.2
1.5-3.0
0.2-0.6
 
 Physical Properties:
Symbol
Barrel hardness
HS
Neck Hardness
HS
Tensile Strength
MPa
 
IC-1
58-70
35-55
>160
IC-2
62-72
35-55
>160
IC-3
68-75
35-55
>160
 
 Application:
IC-1 Rolls for intermediate and finishing stands of bar, rod mills and section mills.
IC-2 Rolls for intermediate and finishing stands of bar, rod mills and section mills, stretch reducing rings for seamless tube mills
IC-3
 
 The capacity of making:
Type
Diameter of barrel (mm)
Length of barrel (mm)
   
Rolls
< X 650
< 1500
   
Rings
X 190-600
400 (max.)
   

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