Model:OD 130----1200mm
The chilled cast iron roll has good hardness, smooth surface, it's well machined and durable, custom -made for rubber refiner mill
Hardness & thickness of gray layer
Item | Roll Diameter (mm) | ||||
| >250---400 | >400—500 | >500 | ||
Thickness (mm) | 3---13 | 4---20 | 4--22 | 5---24 | |
Shell hardness HS | Normal steel roll | 65---72 | |||
Alloy steel roll | 68--75 | ||||
Shaft neck Hardness HS | Normal steel roll | 26--36 | |||
Alloy steel roll | 35---48 | ||||
Tolerance on roll manufacturing
place | Diameter | length | ||
Tolerance (mm) | Max(mm) | tolerance | Max | |
shell | 3 | +/-0.5 | 10 | +/-1.0 |
Shaft neck | 5 | +/-0.5 | 10 | +/-1.0 |
Application | Test pressure(Mpa) |
Calendar | 0.60 |
Open rubber mixer | 1.25 |
Plastic | 1.60 |
Chemical composition chart of roll
Roll kind | Mark | Chemical composition | ||||||||||
C | Si | Mn | P | S | Ni | Cr | Mo | Cu | ||||
steel roll | LTG--P | 3.2-3.8 | 0.3-0.9 | 0.2—0.6 | <0.6 | <0.12 | -- | -- | -- | -- | ||
0.4-1 | 0.2—0.5- | -- | -- | |||||||||
Alloy roll | Ni&Cr alloy |
LTG-H | ||||||||||
-- | --- | 0.5--1 | ||||||||||
Cu&Cr alloy | ||||||||||||
Mo&Cr alloy | -- | 0.2-0.5 | - | |||||||||
