Cast Iron Roll,Work Rolls for the Rougher Stands of Hot Strip Mills
Cast Iron Roll are mainly divided into three kinds as below
1)Infinite chilled casting iron roll
it works with fine intercrystalline graphite layer.Size, shape and distribution of graphite and carbide can be controlled through the chilling effect and alloy content.Because of the added alloy element such as manganese, chromium, nickel, molybdenum, matrix organization may vary from pearlite, bainite to martensite.Add a small amount of fine graphite exists, not only improve the roll spalling resistance and thermal crack resistance and wear resistance, but also cause the work layer of roller hardness dropping very small.The rolls are mostly used in bar and wire rolling, finishing mill, section mill etc
Chemical composition (%)
Code |
C |
Si |
Mn |
Cr |
Ni |
Mo |
v |
IC |
2.90-3.60 |
0.60-1.20 |
0.40-1.20 |
0.60-1.20 |
0.20-0.60 |
||
ICⅠ |
2.90-3.60 |
0.60-1.20 |
0.40-1.20 |
0.70-1.20 |
0.50-1.00 |
0.20-0.60 |
|
ICⅡ |
2.90-3.60 |
0.60-1.20 |
0.40-1.20 |
0.70-1.20 |
1.01-2.00 |
0.20-0.60 |
|
ICⅢ |
2.90-3.60 |
0.60-1.20 |
0.40-1.20 |
0.70-1.20 |
2.01-3.00 |
0.20-1.00 |
|
ICⅣ |
2.90-3.60 |
0.60-1.50 |
0.40-1.20 |
1.00-2.00 |
3.01-4.80 |
0.20-1.00 |
|
ICⅤ |
2.90-3.60 |
0.60-1.50 |
0.40-1.20 |
1.00-2.00 |
3.01-4.80 |
0.20-2.00 |
0.20-2.00 |
Properties and application
code |
Roll body hardness(HS) |
Rm(Mpa) |
size(mm) |
Weight per piece(kg) |
Use |
IC |
50-70 |
≥160 |
ø 300~1000 |
500~30000 |
small and middle size medium and precision rolling machine for profile steel,bar,wire and narrow strip etc |
ICⅠ |
55-72 |
≥160 |
|||
ICⅡ |
55-72 |
≥160 |
|||
ICⅢ |
65-78 |
≥350 |
|||
ICⅣ |
70-83 |
≥350 |
thick steel plate and hot rolling steel mill ,work rolls and straightening rolls etc |
||
ICⅤ |
77-85 |
≥350 |
1.Alloys spheroidal graphite cast iron roll
This kind of roll character is spheroidal graphite, its properties are similar to infinite cold chilled rolls, but its strength is higher than the infinite cold chilled rolls.Generally adopts static casting.
Chemical composition(%)
code |
C |
Si |
Mn |
Cr |
Ni |
Mo |
Mg |
SGⅡ |
2.90-3.60 |
0.80-2.50 |
0.40-1.20 |
0.20-0.60 |
- |
0.20-0.60 |
≥0.04 |
SGⅣ |
2.90-3.60 |
0.80-2.50 |
0.40-1.20 |
0.20-0.60 |
0.50-1.00 |
0.20-0.80 |
≥0.04 |
SGⅤ |
2.90-3.60 |
0.80-2.50 |
0.40-1.20 |
0.30-1.20 |
1.01-2.00 |
0.20-0.80 |
≥0.04 |
Properties and application
Code |
Roll body hardness(HS) |
Rm(Mpa) |
Flexural strength(Mpa) |
size(mm) |
weight(kg) |
use |
SGⅡ |
50-70 |
≥320 |
500-700 |
ø300~1300 |
500~35000 |
precision rolling machine for profile steel,bar,wire and narrow strip;hot thin plate rolling machine etc |
SGⅣ |
55-70 |
≥320 |
500-700 |
|||
SGⅤ |
60-70 |
≥320 |
600-800 |
2.high chromium Centrifugal casting iron roll
It is high alloy roll, the base is bainite matrix and Chromium carbide, the core is spheroidal graphite cast iron roll
Chemical composition(%)
code | C |
Si |
Mn |
Cr |
Ni |
Mo |
V |
HCrⅠ |
2.30-3.30 |
0.30-1.00 |
0.50-1.20 |
12.00-15.00 |
0.70-1.70 |
0.70-1.50 |
0.00-0.60 |
HCrⅡ |
2.30-3.30 |
0.30-1.00 |
0.50-1.20 |
15.01-18.00 |
0.70-1.70 |
0.70-1.50 |
0.00-0.60 |
HCrⅢ |
2.30-3.30 |
0.30-1.00 |
0.50-1.20 |
18.01-22.00 |
0.70-1.70 |
1.51-3.00 |
0.00-0.60 |
Properties and application
code | Roll body hardness(HS) |
Rm(Mpa) |
size(mm) |
Weight per piece(kg) |
use |
HCrⅠ |
60~75 |
≥350 |
ø400~1000 |
800~15000 |
Hot rolling steel strips vertical rolls,straightening rolls;thick plate work rolls,profile steel roller rings etc |
HCrⅡ |
65~80 |
≥350 |
|||
HCrⅢ |
75~90 |
≥350 |
Ted Machine, with over 10 years experience, is one of leading cast iron roll,work rolls for the rougher stands of hot strip mills manufacturers and suppliers in China. We have introduced advanced equipment and technology in our plant. Welcome to buy the customized and quality equipment from our factory.