Brief Introduction of HSS Roll
High-speed steel (HSS) rolls are advanced metallurgical products widely used in the modern steel industry for hot rolling applications. These rolls are known for their exceptional wear resistance, high-temperature hardness, and thermal fatigue resistance. Composed of alloy elements such as tungsten (W), molybdenum (Mo), vanadium (V), and chromium (Cr), HSS rolls exhibit superior durability and performance compared to traditional cast iron and cast steel rolls.
By adopting high-speed steel rolls, steel manufacturers can achieve improved efficiency, lower maintenance costs, and superior product quality.
Physical Parameter
| |
Normal |
Enhanced |
High Strength |
Slitting |
Dogbone |
| Roll Specification |
Ø280 - Ø850 |
| Density |
7.6 g/cm³ |
7.8 g/cm³ |
8 g/cm³ |
7.6 g/cm³ |
7.6 g/cm³ |
| Casting |
Centrifugal Casting |
| Heat Treatment |
HBW Patented |
| Hardness |
General: 82-89HSD
Different range based on stands73-77HSD |
73-77HSD |
79-83HSD |
| Hardness Drop |
≤3HSD |
| Rolling Temperature |
780ºC-1100ºC |
| Pass Life |
4-5 times than CI Rolls |
1.3 tims than
HSS Normal |
1.5 tims than HSS Normal |
24-32 hours Continue Rolling (2-3 times than High-boron Rolls) |
| Dressing |
1.0-1.5mm |
| Use Periods |
8-10 Cycles |
| Application |
Intermediate and Finishing stands in bar mill Fours stands before pre-finishing stands in wire mill
Hot strip and plate steel working rolls Section steel universal mill |
Slitting stand in bar mill |
Dogbone stand in bar mill |
Physical Properties
| Properties |
Barrel |
Core |
| Tensile Strength(N/mm²) |
≥700MPa |
≥450MPa |
Compressive Strength |
≥2500MPa |
|
Chemical Analysis (Proportion differert based on HSS Grade)
HSS Normal
| |
HBW Patented Chemical Composition (%) |
| HSS Normal |
C |
Si |
Mn |
Cr |
Ni |
Mo |
V |
W |
P & S |
Nb |
Co |
Others |
| 1.5-2.10 |
0.30-0.7 |
0.30~1.0 |
3.00~ 6.00 |
0.50~ 1.50 |
3.0-7.0 |
2.0-8.0 |
1.0-8.0 |
≤0.03 |
Depends oMaterialn HSS Grade |
HSS Enhanced
| Material |
Chemical composition control requirements (%) |
| HSS Enhanced |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
W |
Ni |
Nb |
Other |
| 1.5-2.1 |
0.2-1.0 |
0.3-1.0 |
≤0.03 |
≤0.03 |
4.0-6.0 |
3.0-6.0 |
3.0-5.0 |
2.5-5.0 |
0.5-1.5 |
≤0.5 |
≤1.0 |
HSS High Strength
| Material |
Chemical composition control requirements (%) |
| HSS Enhanced |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
W |
Ni |
Nb |
Other |
| 1.5-2.1 |
0.2-1.0 |
0.3-1.0 |
≤0.03 |
≤0.03 |
4.0-6.0 |
4.0-6.0 |
4.0-6.0 |
3.0-5.0 |
0.5-1.5 |
≤1.0 |
≤1.0 |
Detailed Photos of HSS Roll
Advantage of High-Speed Steel Rolls
1. High Wear Resistance
• Crafted with a generous blend of hard carbides such as tungsten, vanadium, and chromium, these HSS rolls offer unmatched wear resistance, making them a top choice for challenging rolling tasks.
• Perfectly designed for the rigors of rolling high-strength steel, stainless steel, and other demanding materials, ensuring exceptional performance.
2. High Hardness
• Achieving a working layer hardness of 65 HRC or higher, these rolls are engineered to maintain their formidable hardness even when subjected to intense high-temperature conditions.
• A consistently uniform hardness distribution effectively prolongs the service life of the roll, offering enduring reliability.
3. Excellent Thermal Crack Resistance
• Engineered to withstand high-temperature rolling scenarios, the surface is resilient against cracking caused by rapid cooling or thermal stress challenges.
• Exceptionally suited for continuous operations in high-temperature and high-stress settings, showcasing unparalleled durability.
4. Thermal Fatigue Resistance
• With outstanding resistance to thermal fatigue, these rolls deliver stable performance across repeated cycles of heating and cooling, minimizing fatigue crack development.
5. Long Service Life
• Boasting a lifespan 3-6 times greater than traditional cast iron or cast steel rolls, HSS rolls significantly cut down on replacement frequency and downtime, enhancing operational efficiency.
6. Strong Versatility
• Versatile enough for hot rolling processes, excelling both in normal and low temperature rolling environments as well as meeting the stringent surface quality and dimensional accuracy standards.
7. Advanced Manufacturing Technology
• Produced using state-of-the-art centrifugal composite casting technology, these rolls feature HSS as the robust working layer with ductile cast iron as the core, marrying wear resistance with impact toughness seamlessly
Anhui Huanbowan High Speed Steel Mill Roll Co., LTD
Anhui Huanbowan High Speed Steel Mill Roll Co., Ltd. is China's earliest and largest enterprise specializing in the production of high-speed steel (HSS) rolls and rings. Founded in 2007, we cover an area of approximately 70,000 square meters and has more than 300 employees, including more than 30 experienced intermediate and senior technical experts.
Through the adoption of cutting-edge manufacturing process, including the precision of centrifugal casting and advanced technology of heat treatment, HBW consistently delivers products of unparalleled quality. Our HSS series products are renowned for their outstanding attributes, offering remarkable wear resistance, enduring thermal fatigue, and a prolonged service lifespan that sets them apart in steel industry.
Our high-performance rolls find extensive application across hot rolling production lines, especially in the crucial finishing stands. They are indispensable in fabricating an array of materials, from rebar and structural steel to seamless steel, strip steel, high-strength alloys, and even stainless and special steels. The versatility and reliability of HBW rolls make them an ideal choice for steel mills aiming to achieve excellence in material production.
At the core of HBW's philosophy is a steadfast commitment to innovation and quality. We promise to deliver rolls that not only possess uniform hardness and a pristine surface finish but also boast a long service life. By choosing HBW, customers are empowered to elevate their production efficiency and significantly cut down on operational costs.
The prestigious HBW products have been the choice of leading steel manufacturers across the globe. Their consistent performance and unparalleled reliability have earned them a coveted reputation, both domestically and internationally, as the benchmark of excellence in the steel industry
1. Two Casting Lines
2. Two Heat Treatment Lines
3. Two HSS Roll & Two HSS Ring Processing Lines
4. 1 Professional Physical and Chemical Center
Professional physical and chemical center
HBW Physical and Chemical Testing Center is a key technical support department of the company, primarily responsible for testing and analyzing the physical properties and chemical composition of materials. It provides scientific support for product quality assurance, process optimization, and research and development. The center is equipped with advanced testing equipment and a professional technical team, covering quality control throughout the entire production process, from raw materials to finished products.
Functions of the Center
1. Physical Property Testing
2. Chemical Composition Analysis
3. Failure Analysis
4. Process Development Support
5. Quality Supervision and
• Oversees internal product quality control and offers testing services for external clients, assisting in obtaining relevant product certifications.
Technical Strength
The center is equipped with state-of-the-art testing instruments, including:
• Spectrometers
• Scanning Electron Microscopes (SEM)
• Universal Testing Machines
• Impact Testing Machines
• Hardness Testers, and more.
Additionally, the center boasts a highly experienced and certified technical team, with several engineers holding national-level testing qualifications to ensure the accuracy and authority of test results.
1.Perfect Management System &10 Invention Certificates and 16 Utility Model Patents
2.Honors Awarded by Government & Our Distinguished Customers
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