Alloy Ductile Cast Iron Roll

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Alloy Ductile Iron Roll

The alloy ductile cast iron roll is made of acicular nodular cast iron mixing with nickel, chromium, molybdenum. It can be used in various blanking rolling mills for section steel, bar, wire rod and narrow strip, roughing mills, work roll for seamless steel tube, intermediate stand and finishing stand for section steel, bar, wire rod and narrow strip and rolling mills before finishing rolling for various sections and plate steels. The finished roll can also be used in the case of a low load. When the finished roll is subjected to a heavy load, it is preferable to use as a nodular cast iron chill roll with high strength and wear resistance. The TINVO mill rolls conform to the standards of ISO, GB, ASTM, DIN, JIS, high quality with the best price guaranteed

Application 
Alloy spheroidal graphite iron roll has a lot of usage following as:
Blooming roll rack of rolling mills for section steel, bar, wire rod and narrow strip,
Rolling mill work roll for seamless steel tube
Intermediate and finishing roll rack of rolling mill for section steel, bar, wire rod and narrow strip

Chemical Composition

Roll name

C

Si

Mn

P

S

Ni

Cr

Mo

Mg

Cr-Mo semi chilled nodular   cast iron roll

3.20~3.70

1.00~2.50

0.50~1.00

≤0.20

≤0.03

 

0.20~0.60

0.20~0.60

>0.04

Cr-Mo infinite chilled nodular  cast iron roll

3.20~3.70

1.00~2.50

0.50~1.00

≤0.20

≤0.03

 

0.20~0.60

0.20~0.60

>0.04

Ni-Cr-Mo infinite chilled nodular cast iron roll(I)

3.20~3.70

1.00~2.50

0.50~1.00

≤0.20

≤0.03

0.50~1.00

0.20~0.60

0.20~0.60

>0.04

Ni-Cr-Mo infinite chilled nodular cast iron roll(II)

3.20~3.70

1.00~2.50

0.50~1.00

≤0.20

≤0.03

1.01~3.00

0.30~1.20

0.20~0.60

>0.04

Ni-Mo nodular cast iron roll(I)

3.20~3.70

1.50~2.40

0.40~0.80

≤0.20

≤0.03

1.00~2.50

0.10~0.50

0.40~0.80

>0.04

Ni-Mo nodular cast iron roll(II)

3.20~3.70

1.20~2.40

0.40~0.80

≤0.20

≤0.03

2.51~3.50

0.10~0.50

0.40~1.00

>0.04

 

Physical Properties

Roll name

Roll-body hardness HSD

Roll-neck hardness HSD

Tensile strength Mpa

Cr-Mo semi chilled nodular cast iron roll

40~55

32~50

>300

Cr-Mo infinite chilled nodular cast iron roll

55~70

35~55

>300

Ni-Cr-Mo infinite chilled nodular cast iron roll(I)

48~70

35~55

>320

Ni-Cr-Mo infinite chilled nodular cast iron roll(II)

48~70

35~55

>320

Ni-Mo nodular cast iron roll(I)

42~52

32~43

>400

Ni-Mo nodular cast iron roll(II)

55~75

35~55

>400

 

Metallographic Structure

Roll name

Metallurgical structure

Cr-Mo semi chilled nodular cast iron roll

Pearlite + cementite + nodular graphite + a little ferrite

Cr-Mo infinite chilled nodular cast iron roll

Pearlite + cementite + nodular graphite

Ni-Cr-Mo infinite chilled nodular cast iron roll(I)

Pearlite + cementite + nodular graphite

Ni-Cr-Mo infinite chilled nodular cast iron roll(II)

Fine pearlite + cementite + nodular graphite

Ni-Mo nodular cast iron roll(I)

Sorbite + cementite + nodular graphite

Ni-Mo nodular cast iron roll(II)

Bainite+ cementite + nodular graphite

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