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High Speed Steel Rolls HSS Rolls Steel Rolling Mill Rolls Wear Resistance
HSS Rolls Description:
High performance high speed steel has high wear resistance and hardenability, especially the red hardness at high temperature, which makes high-performance high-speed steel more suitable for manufacturing rolls and roll rings. Therefore, high speed steel rolls are not only suitable for plate and strip mills, but also for wire and bar mills, and have achieved remarkable results.
High Speed Steel Rolls Specification:
| Model | HSS / HBHSS / BCI |
| Material | Carbon Steel,Alloy Steel,45 Steel, 42crmo,34crnimo6 |
| Diameter Of Shaft | Max 2500mm |
| Inspection | Chemical Composition Test, Ultrasonic Test, Tensile Strength Test, Impact Test, Hardness Test, Dimension Test |
HSS Rolls Main Chemical Composition:
Compared with traditional ductile iron rolls and
high-nickel-chromium rolls, high-speed steel rolls have higher
steel passing per groove (times) due to their good wear resistance,
which saves roll changing time, improves rolling mill operation
rate, reduces roll consumption, and reduces production. cost, and
improve the overall efficiency of the factory. Generally, the
amount of steel passing in a single groove (times) is 3 to 5 times
that of cast iron rolls, and the total amount of passing steel can
be guaranteed to be more than 4 times on average.
| C | Si | Mn | Cr | Mo | W | V |
| 1.6-2.3 | 0.3-0.9 | 0.2-0.8 | 3.0-6.0 | 3.0-6.0 | 1.0-4.0 | 2.0-6.0 |
High Speed Steel Rolls Properties:
| Mpa | HSD | Mpa.m½ | J/cm² |
| 750-1100 | 80-90 | 32-40 | 3-10 |
HSS Rolls Advantages:
● Compared with ductile iron rolls and high-nickel-chromium rolls,
the single-groove (time) steel passing is higher, which saves roll
changing time, improves rolling mill operation rate, reduces roll
consumption, reduces production costs, and improves the overall
benefit of the factory.
● The high speed steel roll has good hardenability, and the
hardness hardly decreases from the surface of the roll body to the
inside of the working layer, thus ensuring that the roll has the
same good wear resistance from the outside to the inside.
● During the use of the high-speed steel roll, under good cooling
conditions, a thin and dense oxide film is formed on the surface of
the roll body. This uniform, thin and dense oxide film can exist
for a long time without falling off, making the high-speed steel
roll wear-resistant.
● The high speed steel roll material has a large expansion
coefficient and good thermal conductivity. During the rolling
process, the change of the rolling groove is small, and the
consistency of the pass size is maintained for a long time,
especially when rolling bars or rebars, it is more conducive to
control the negative tolerance of the rolling material.
● Since the core of the centrifugal casting high-speed steel roll is made of alloy ductile iron material, the strength of the roll neck is high.
