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 Rolling Roll Co., Ltd. (HBW) was established in 2007, covering an area of approximately 70,000 square meters. The company currently employs nearly 300 people, including 35 senior technical personnel. It is located in Tongling City, Anhui Province, known as the ancient copper capital of China.
The company specializes in the production of hot-rolled plate and strip high-speed steel working rolls, hot-rolled bar (wire) high-speed steel rolls, KOCKS rolling mill roll rings, PSM rolling mill roll rings, seamless steel pipe rolling mill roll rings, cantilever rolling mill roll rings, high-speed wire rod pre-finish rolling mill frame roll rings, feeder roll rings, and section steel precision rolling mill roll rings. It has an annual production capacity of 15,000 tons of high-speed steel rolls and roll rings. The company has established 2 casting production lines, 2 heat treatment lines, 2 roll processing lines, and 2 roll ring processing lines, with a monthly output of over 1,200 high-speed steel rolls and 1,000 high-speed steel roll rings. It is currently the earliest, largest in scale, and highest market share enterprise specializing in the production of high-speed steel rolls and roll rings in China.
As a national-level specialized and innovative "Small Giant" enterprise, a high-tech enterprise in Anhui Province, and a champion of specialized and innovative enterprises in Anhui Province, HBW not only has its own technology research and development center but also has established long-term and close industry-university-research cooperation with Beijing University of Technology, Beijing University of Science and Technology, and the Iron and Steel Research Institute. The company's high-speed steel rolls, KOCKS roll rings, seamless steel pipe roll rings, and high-line pre-finish rolling mill roll rings have won 11 national invention patents and 25 utility model patents.
As a 3A-level enterprise with a strong commitment to contracts and credibility, HBW serves a wide range of domestic and international clients with its excellent product performance and first-class service level.
The company has established strategic partnerships with large steel enterprises such as China Baowu Steel Group (A1-level supplier), Hebei Iron and Steel Group, Shagang Group, Qingshan Holding Group, Jieneng Steel Group, Shougang Group, Shandong Steel Group, Jingye Group, Nanjing Steel, CITIC Special Steel, Zhongtian Steel, Guangxi Steel, Anyang Iron and Steel, and others. Its products are sold to more than 200 steel enterprises across China and exported to over 30 countries and regions, including the United States, Germany, Russia, South Korea, Turkey, Brazil, India, Vietnam, Taiwan, and more.
We sincerely hope that our products will make a greater contribution to improving the product quality and economic benefits of our customers!!
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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