Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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Material Options: High-quality carbon steel grades such as 35#, 45#, or customized compositions
Dense Internal Structure: Enhanced through ≥3.0 forging ratio to eliminate porosity and internal defects
Optimized Grain Flow: Aligned along shaft axis for superior torque transmission and fatigue strength
Excellent Machinability: Suitable for gear hobbing, milling, and turning operations
Gear shafts, transmission shafts, spline shafts, and stepped shafts
Widely used in gearboxes, reduction units, wind turbines, mining machinery, and heavy-duty industrial drives
Engineered to handle rotational stress, shock loading, and long service cycles
| Item | Details |
|---|---|
| Product Name | High-Density Forged Carbon Steel Blank for Gear Shaft Manufacturing |
| Material Grades | - High-strength carbon steels: 35#, 45#, customized grades available - Excellent tensile strength, impact toughness, and fatigue resistance - Designed for gear shaft cores and stepped shaft applications under torque and dynamic loading |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T - Large open-die forging press with optional core boring capability - Supports near-net shape forging for long shafts with solid or bored centers |
| Manufacturing Process | Hot Forging → Intermediate Heat Treatment → Optional Core Boring / Drilling → Rough / Semi-Finish Machining → UT & Dimensional Inspection |
| Forging Ratio | ≥ 3.0 — Promotes directional grain flow along shaft axis, ensuring excellent torque transmission and fatigue resistance |
| Applications | - Gear shafts, transmission shafts, coupling blanks, and stepped mechanical shafts - Widely used in gearboxes, wind turbines, heavy-duty industrial drives, and construction equipment - Withstands high torsional loads, impact forces, and cyclic stresses |
| Heat Treatment Options | - Quenched + Tempered for improved strength and wear resistance - Optional stress relief to maintain dimensional accuracy before final machining |
| Testing & Inspection | - Chemical: Spectrometer-controlled composition analysis - Mechanical: Hardness, tensile, yield, impact toughness - Ultrasonic (UT): Multi-angle flaw detection, including bore zone (if applicable) - Dimensional: Length, diameter, straightness, concentricity, and flatness |
| Value-Added Services | - Custom shaft geometries: bore size, shoulders, spline zones, flanges - Pre-machined journals, grooves, or stepped ends for gear integration - Rust-preventive coating, protective end caps, steel banding & export crate packaging - Laser part marking, OEM branding, and full traceability options |
The steel forgings production flow:
raw material inspection → unloading → inspection → preheating → forging → heat treatment → inspection → rough machining → non-destructive testing → inspection → packaging → delivery.
We produce forged parts weighing anywhere from 100 kg to 7,000 kg.
Yes, we offer comprehensive services, including full in-house heat treatment, rough machining, and finish machining.
We proudly serve a variety of industries, including wind energy, heavy equipment, port machinery, and transmission systems.
Our production lead times vary:
Our factory is in Changzhou City, near Shanghai, making shipping convenient via Shanghai Port.
Ready to get started? Please send your technical drawings and requirements our way. Our engineers will promptly review them and provide you with a professional quotation and a tailored solution.