Hot Rolled Mill Work Rolls
Introduce
Hot Strip Mill Work Rolls account for a substantial part of our global output. We provide high quality products from our facilities in Europe, North America, and Asia, when and where they are required, anywhere in the world.
An extensive range of roll dimensions and materials
Our plants can manufacture almost any size or grade of Hot Strip Mill Work Rolls for all applications ranging from Roughing Mill Work Rolls, including Vertical Edgers, to Finishing Stand Work Rolls.
Manufacturing
Forged rolls are manufactured at our plants in the China. We also provide customers with re-hardening and re-cutting service and support.
With FUSHUN extensive knowledge and experience of manufacturing forged work rolls, we can assist clients in selecting the grades and parameters that will assure optimal performance in their mill operations.
Process
Product design → Smelting (EF + ESR) → Forging → (Normalizing) → Spheroidizing and hydrogen annealing → Rough turning of the roll surface (cut test block) → Inspection (UT, macroscopic, microscopic, dimensions, appearance) → Storage and material requisition → Rough machining → Ultrasonic testing → Quenching and tempering treatment → Hardness inspection → Semi-finish machining → Roll neck surface and thrust end surface quenching and tempering → Roll neck hardness inspection → Semi-finish machining → Ultrasonic testing → Roll body surface quenching (+ cold treatment + low-temperature tempering) → Roll body hardness inspection → Finish machining → Inspection → Storage → Rust prevention and packaging → Transportation
Advantages
- ESR steel ingots have high purity.
- Heat treatment is good, and hardness is uniform.
- Machining dimensions are precise.
- No burn issues caused by grinding.
Main Roll Grades
The following list presents the different grades that FUSHUN can provide. Further information is available in our Product Data Sheets.
Steel Grade | C | Si | Mn | Cr | Ni | Mo | V |
55Cr | 0.50-0.60 | 0.17-0.37 | 0.35-0.65 | 1.00-1.30 | ≤0.30 | / | / |
50CrMnMo | 0.45-0.55 | 0.20-0.60 | 1.30-1.70 | 1.40-1.80 | / | 0.20-0.60 | / |
60CrMnMo | 0.55-0.65 | 0.25-0.40 | 0.70-1.00 | 0.80-1.20 | 0.25 | 0.20-0.30 | / |
50CrNiMo | 0.45-0.55 | 0.20-0.60 | 0.50-0.80 | 1.40-1.80 | 1.00-1.50 | 0.20-0.60 | / |
60CrNiMo | 0.55-0.65 | 0.20-0.40 | 0.60-1.00 | 0.70-1.00 | 1.50-2.00 | 0.10-0.30 | / |
60SiMnMo | 0.55-0.65 | 0.70-1.10 | 1.10-1.50 | / | / | 0.30-0.40 | / |
60CrMoV | 0.55-0.65 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | / | 0.30-0.40 | 0.15-0.35 |
70Cr3NiMo | 0.60-0.80 | 0.40-0.70 | 0.50-0.90 | 2.00-3.00 | 0.40-0.60 | 0.25-0.60 | / |
*P, S, ≤0.025 ; Cu≤0.25