Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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Large Diameter Rough Machined Heavy Steel Forgings for Rolling Mill Components. Our large diameter rough machined heavy steel forgings are engineered to meet the demanding needs of rolling mill systems. These components are designed to withstand extreme mechanical stress, repeated thermal cycling, and high torque during continuous operation. Forged from high-strength alloy steels and processed with precision open die techniques, they ensure superior structural integrity and service life.
Large Diameter Capability: Forgings available up to 1700 mm in outer diameter and up to 7 tons per piece, suitable for rolling mill work rolls, and shafts.
High Structural Strength: Forging ratio ≥ 3.0 ensures dense grain flow and enhanced mechanical properties under heavy rolling and compressive forces.
Rough Machined Finish: Delivered in rough-machined condition, allowing for custom final machining based on assembly needs and tolerances.
Thermal and Mechanical Stability: Optimized heat treatment improves core toughness, fatigue resistance, and dimensional stability under high temperatures.
Work roll and backup roll shafts for hot and cold rolling mills
Transmission components for plate and strip rolling equipment
Housing parts and support structures for steel and aluminum rolling mills
Gear and coupling blanks for rolling line drive systems
| Item | Details |
|---|---|
| Product Name | Large Diameter Rough Machined Heavy Steel Forgings for Rolling Mill Components |
| Material Grades | - Alloy steels tailored for high compressive strength, fatigue resistance, and dimensional stability under rolling loads and temperature fluctuations |
| Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T- Suitable for open die forging of extra-large diameter components and heavy-section parts |
| Manufacturing Process | Raw material inspection → Unloading → Inspection → Preheating → Forging → Heat Treatment → Inspection → Rough Machining → Non-Destructive Testing → Final Inspection → Packaging → Delivery |
| Forging Ratio | ≥ 3.0 — Improves internal uniformity, grain flow, and durability under high torque and compressive stress during rolling operations |
| Heat Treatment Options | - Normalizing and tempering to refine microstructure, improve dimensional stability, and relieve internal stress |
| Applications | - Backup rolls, work roll shafts, and coupling components in hot/cold strip mills- Support rollers, drive shafts, and rolling mill housing components |
| Process Compliance | - Manufactured based on customer-provided technical drawings and heavy load service requirements |
| Delivery Conditions | - Supplied heat treated and rough machined to allow final processing by OEMs- Custom geometry available for rolling mill integration |
| Testing & Inspection | - Chemical Composition Testing- Mechanical Testing: Strength, Toughness, Hardness- NDT: Ultrasonic Testing (UT), Magnetic Particle Testing (MT)- Dimensional Inspection using precision tools |
Process flow:
raw material inspection → unloading → inspection → preheating → forging → heat treatment → inspection → rough machining → non-destructive testing → inspection → packaging → delivery.