Brief Introduction of HSS Roll
High-speed steel (HSS) rolls are at the forefront of metallurgical innovation, standing as essential components within the steel industry for their robust application in hot rolling processes. Revered for their extraordinary wear resistance, unmatched high-temperature hardness, and superior thermal fatigue endurance, these rolls are crafted with precision using alloy elements like tungsten (W), molybdenum (Mo), vanadium (V), and chromium (Cr). This composition bestows upon HSS rolls a level of durability and performance that far surpasses the capabilities of traditional cast iron and cast steel counterparts..
Implementing high-speed steel rolls enables steel manufacturers to experience a transformation in operational efficiency, significantly reducing maintenance costs while enhancing the quality of the final product.
Physical Characteristics Parameter Details
| |
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 |
Comprehensive Physical Properties
| Properties |
Barrel |
Core |
| Tensile Strength(N/mm²) |
≥700MPa |
≥450MPa |
Compressive Strength |
≥2500MPa |
|
Chemical Analysis (Proportions vary by HSS Grade)
HSS Standard
| |
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 Performance
| 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 Superior 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 an optimal combination of hardening agents including tungsten, vanadium, and chromium, these High-Speed Steel (HSS) rolls demonstrate superior wear resistance, positioning them as the ideal solution for the most demanding rolling applications.
• Specifically engineered to withstand the challenges of rolling high-strength and stainless steels, these rolls ensure top-tier performance even under the harshest conditions.
2. High Hardness
• With a working layer hardness of 65 HRC or more, these rolls are meticulously designed to maintain their robust hardness, even in extreme high-temperature environments.
• Their uniform hardness distribution is key to extending the roll's service life, delivering consistent and reliable performance.
3. Excellent Thermal Crack Resistance
• Expertly crafted to endure high-temperature rolling conditions, the surface resists cracking from rapid cooling or thermal stress, ensuring long-lasting durability.
• Perfectly suited for continuous high-temperature, high-stress operations, these rolls showcase exceptional durability and reliability.
4. Thermal Fatigue Resistance
• With remarkable resistance to thermal fatigue, these rolls consistently deliver stable performance through repeated heating and cooling cycles, effectively minimizing the risk of fatigue crack development.
5. Long Service Life
• Offering a lifespan 3-6 times longer than traditional cast iron or cast steel rolls, HSS rolls dramatically reduce replacement frequency and downtime, significantly boosting operational efficiency.
6. Strong Versatility
• Exceptionally versatile for hot rolling processes, these rolls excel in both normal and low temperature conditions, while also meeting stringent standards for surface quality and dimensional accuracy.
7. Advanced Manufacturing Technology
• Crafted with cutting-edge centrifugal composite casting technology, these rolls are constructed with HSS as the durable working layer and ductile cast iron as the core, achieving a perfect balance of wear resistance and impact toughness.
Anhui Huanbowan High Speed Steel Mill Roll Co., LTD
Anhui Huanbowan High Speed Steel Mill Roll Co., Ltd. stands as China's pioneering and largest entity dedicated to crafting exceptional high-speed steel (HSS) rolls and rings. Since its inception in 2007, the company has been at the forefront of innovation and industrial excellence. Spanning an impressive expanse of approximately 70,000 square meters, our operations are powered by a robust workforce of over 300 skilled professionals, including a team of more than 30 seasoned intermediate and senior technical experts.
Embracing groundbreaking manufacturing techniques, such as precision centrifugal casting and state-of-the-art heat treatment technologies, HBW consistently delivers products that redefine the standards of quality. Known for their exceptional attributes, our HSS series products exhibit extraordinary wear resistance, noteworthy thermal fatigue endurance, and an extended service life that distinguishes them in the steel industry.
Our high-performance rolls are extensively utilized in hot rolling production lines, most notably in the pivotal finishing stands. They play a crucial role in creating a diverse range of materials, from rebar and structural steel to seamless, strip, high-strength alloys, and even stainless and specialty steels. The unmatched versatility and dependability of HBW rolls position them as the premier choice for steel mills aiming to achieve superior material production.
At the very heart of HBW's philosophy is an unwavering dedication to innovation and unmatched quality. We pledge to deliver rolls that feature consistent hardness, impeccable surface finish, and a notably extended service life. By opting for HBW, customers are equipped to enhance their production efficiency significantly while reducing operational costs.
The esteemed HBW products have become the preferred selection for leading steel manufacturers worldwide. Their unwavering performance and unmatched reliability have secured them a prestigious reputation both domestically and internationally, establishing them as the gold standard 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
At the heart of Anhui Huanbowan High Speed Steel Mill Roll Co., Ltd., the HBW Physical and Chemical Testing Center stands as a beacon of technical excellence. As a crucial pillar in our operations, this center undertakes the meticulous testing and analysis of the physical and chemical properties of materials. It plays an essential role in underpinning the scientific foundation of our product quality assurance, spearheading process optimizations, and bolstering research and development initiatives. Equipped with cutting-edge testing apparatus and staffed by a team of expert technicians, the center ensures unwavering quality control across the production spectrum, from raw material procurement to the final product delivery.
Functions of the Center
1. Physical Property Testing
2. Chemical Composition Analysis
3. Failure Analysis
4. Process Development Support
5. Quality Supervision and
• Ensures rigorous internal product quality oversight while extending its sophisticated testing services to external clients, aiding them in securing essential product certifications.
Technical Strength
The center is fortified with a range of state-of-the-art testing instruments, such as:
• Spectrometers
• Scanning Electron Microscopes (SEM)
• Universal Testing Machines
• Impact Testing Machines
• Hardness Testers, among others.
In addition to its advanced equipment, the center prides itself on a team of highly skilled and certified technical professionals. Many of our engineers possess national-level testing certifications, ensuring the utmost precision and credibility in our test results.
1. A Flawless Management System:
A Testament to Excellence with 10 Invention Certificates and 16 Utility Model Patents. Our commitment to innovation and quality is recognized through these accolades, showcasing our dedication to pioneering advancements in the industry.
2. Prestigious Honors Bestowed by Government & Esteemed Clients:
Our accolades are a reflection of our unwavering dedication to excellence, with recognition from government bodies and accolades from our valued clients, underlining the trust and respect we have earned in the industry.
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