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.
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