Alloy Cast Steel Roll

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Alloy Cast Steel Roll 

The alloy cast steel rolls are hypo-eutectoid cast steel rolls alloyed with Chromium and Molybdenum. The rolls normally employ the monoblock casting process (single pour): Melting-Casting-Heat treatment-Machining- Flaw detection- Finished products. These cast rolls have good strength, generally used for the rough rolling backup roll of square slab rolling mills, large-scale steel billet rolling mills, rail beam rolling mills and two-roll strips roughing mills.  It also can be worked as large vertical rolls for broken scale racks, rough rolling mills for section steel & bar and wire rod mills. The cast steel roll produced by TINVO has quality standards including ISO, GB, ASTM, DIN, JIS.

The support rolls of integral casting and composite casting are all alloy cast steel rolls in the strict sense. The carbon content is controlled according to the hardness requirements and different alloy elements are added to produce the alloy cast steel materials of the support rolls, these alloy cast steel materials contain high chromium, molybdenum, and vanadium As the alloy content increases, the matrix structure changes from sorbite to bainite or martensite, and it also contains secondary carbides with high hardness, with a hardness range of HS 55-70, which has excellent wear resistance and peeling resistance.

Application 
Casting roll of blooming and slab mill, section roughing mill roll, 
backup roll of hot strip steel rolling mill.

cast steel roll application

Chemical Composition

Steel specification

C

Si

Mn

P

S

Ni

Cr

Mo

ZuS60SiCrNiMo

0.55~0.65

0.20~0.45

0.90~1.20

≤0.035

≤0.030

 

0.80~1.20

0.30~0.45

ZuS65SiCrNiMo

0.60~0.70

0.20~0.60

0.50~0.80

≤0.035

≤0.030

0.30~0.80

0.80~1.20

0.30~0.45

Zu70Mn

0.65~0.75

0.20~0.45

0.80~1.40

≤0.035

≤0.030

 

 

 

Zu70Mn2

0.65~0.75

0.20~0.45

1.40~1.80

≤0.035

≤0.030

 

 

 

Zu75CrMo

0.70~0.80

0.20~0.45

0.60~0.90

≤0.035

≤0.030

 

0.75~1.00

0.30~0.45

Zu75CrNiMnMo

0.70~0.80

0.20~0.60

0.60~1.10

≤0.035

≤0.030

0.30~1.00

0.90~1.20

0.30~0.45

Zu75Cr3NiMo

0.70~0.80

0.20~0.60

0.60~1.10

≤0.035

≤0.030

0.50~1.50

2.50~3.00

0.30~0.45

Zu80Cr

0.70~0.85

0.20~0.60

0.60~1.10

≤0.035

≤0.030

0.50~1.50

2.50~3.00

0.30~0.45

 

Physical Properties

Steel specification

Roll-body hardness HSD

Tensile strength Mpa

Tension%

ToughnessJ/cm

ZuS60SiCrNiMo

32~42

≥740

≥5

≥8

ZuS65SiCrNiMo

35~45

≥800

≥5

≥8

Zu70Mn

35~45

≥740

≥5

≥8

Zu70Mn2

35~45

≥740

≥5

≥8

Zu75CrMo

36~46

≥770

≥5

≥8

Zu75CrNiMnMo

36~46

≥800

≥5

≥8

Zu75Cr3NiMo

45~55

≥700

≥3

≥5

Zu80Cr

38~48

≥790

≥5

≥7

 

Factory Advantages

TINVO factory advantages

Strong design capacity: 
30+ senior technical engineers, united R&D with known university and institute 

Strong production capacity: 
200,000m2 modernized industrial zone and 500+ employees for short delivery time.

Strict quality control:
Conform to the international standards of ISO, GB, ASTM, DIN, JIS. Has a physical and chemical analysis center with advanced laboratory test instruments and a Direct-reading spectrometer.

Equipment Modernization 
200+ sets of professional processing equipment include automatically controlled machining equipment such as large vertical centrifuges, large high-efficiency rough grinders, large CNC lathes, milling machines, boring machines, grinders, differential temperature heat treatment furnaces, intermediate frequency furnaces, etc.

Abundant Experience
The products have been serving in 400+ rolling lines in China and aboard.

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