Forged Cold Rolling Mill Rolls

PRODUCT DETAILS

 Typical Chemical Analysis:

1)      Forged work roll and intermediate rolls for cold rolling mill

Material

C

Mn

Cr

Mo

V

Ni

86CrMoV7

0.82-0.88

0.32-0.50

1.50-2.20

0.20-1.0

0.10-0.40

≤0.60

9Cr2Mo

0.85-0.95

0.20-0.60

1.50-2.50

0.20-1.0

-

≤0.60

3%Cr

0.75-0.95

0.20-0.60

2.50-3.50

0.20-1.0

-

≤0.60

3%CrA

0.70-0.90

0.30-0.80

2.50-3.50

0.40-1.0

0.10-0.40

0.60-1.0

5%Cr

0.70-0.90

0.20-0.50

4.50-5.50

0.20-1.0

0.10-0.40

0.60-1.0

 

2)      Forged Back-up roll of cold and hot strip mills

Material

C

Mn

Cr

Mo

V

Ni

3%Cr

0.40-0.70

0.40-0.80

2.80-3.20

0.20-0.40

0.10-0.20

0.25-0.60

5%Cr

0.40-0.70

0.40-0.80

5.00-5.40

0.30-0.50

0.10-0.20

0.25-0.60

 

Typical Mechanical Properties

Type of cold rolls

Tensile strength

Depth of hardness

Hardness of neck

Hardness of Barrel

Cr2 Series

≥800

12-18

40-55

Work roll:90-98

Intermediate roll:80-90

Back-up roll:55-75

Temper roll:95-100

Cr3 Series

≥900

20-28

40-55

Cr5 Series

≥1000

25-40

40-55

 

The scope of supply

Type of cold rolls

Material

Body length

Body Diameter

Overall length

Cold-rolling work rolls

Cr2, Cr3, Cr5

≤2500

≤800

5000

Cold-rolling intermediate rolls

Cr2, Cr3, Cr5

≤2500

≤1000

≤5000

Cold-rolling back-up rolls

Cr3, Cr5

≤2800

≤1800

≤8000

Cold-rolling temper rolls

Cr2, Cr3, Cr5

≤2500

≤800

≤8000

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