Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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Precision Forged Steel for Industry Gearboxes – Custom Solutions from 100 to 7000kgs. Our precision forged steel components are engineered to meet the rigorous demands of industrial gearbox systems, delivering exceptional strength, durability, and dimensional accuracy. With forging weights ranging from 100 kg to 7000 kg, we provide customized forged solutions for a wide variety of heavy-duty applications, including wind power, mining, port machinery, metallurgy, and petrochemical industries.
Each forged part is produced using high-quality carbon steel or alloy steel materials, such as 42CrMo,45#, 18CrNiMo7-6, and other industry-standard grades. With advanced forging equipment and precision machining capabilities, we ensure optimal mechanical properties, uniform grain structure, and tight tolerance control.
| Material | 20CrMnTi, 18CrNiMo7-6, 42CrMo and more |
| Forging Equipment | 5 TON, 8 TON, 12 TON Hydralic hammer |
| Apply for | Transmission main shaft is used for driving force |
| Manufacturing Process | Forging+heat treatment+rough machining |
| Forging ratio | ≥3 |
| Delivery terms | Rough machining(N+T) |
| Test equipment | Spectrograph, UT device, tensile and impact test machine, metalloscope,external micrometer, bore dial indicator, hardness testing device and so on. |
| Service | Our service included the forging, process, heat treatment,package, local logistics, customers clearance and maritime transport. We took the customer’s requirements as the principal thing, and pay attention on the products quality. |
These are the main inspection equipments:
| Our Lab inspection equipment | |
| 1 | Spectral component analyzer |
| 2 | Impact strength testing machine |
| 3 | Impact test cryogenic tank |
| 4 | Ultrasonic flaw detector |
| 5 | Brinell hardness tester |
| 6 | Rockwell hardness tester |
| 7 | Digital hydraulic universal testing machine |
| 8 | H.Metallurgical microscope |
| 9 | Program-controlled box furnace |
Our forged gear shafts provide following material characteristics:
- High Strength: Gear shafts must withstand torque and heavy loads without deformation.
- Good Machinability: Easy manufacturability and precision are essential for efficient production.
- Low Notch Sensitivity Factor: Minimize stress concentration points to prevent premature failure.
- Good Heat Treatment Properties: Ensure durability and resistance to wear and fatigue.
- High Wear Resistance: Gear shafts should have a long service life even under demanding conditions.
The steel forgings production flow:
Raw material steel ingot into warehouse(test the chemical composition) → Cutting→ Heating(Furnace temperature test) → Heat treatment after forging(Furnace temperature test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal dimension, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment.
Key Features:
Weight Range: 100 kg to 7000 kg
Materials: 42CrMo, 18CrNiMo7-6,, 35#, 45#, etc.
Forging Process: Open die forging / Free forging
Machining: Rough as per drawing
Heat Treatment: Normalizing, Tempering
Applications:
Gear shafts and gear blanks for industrial gearboxes
Transmission components for wind turbines and heavy-duty machinery
Customized forged parts for power generation and metallurgical equipment
Frequently Asked Questions (FAQs)
1. What is your forging weight range?
We produce forged parts ranging from 100 kg to 7000 kg.
2. Do you provide heat treatment and machining?
Yes, we offer full in-house heat treatment, rough, and finish machining services.
3. Which industries do you supply to?
We serve wind energy, heavy equipment, port machinery, transmission systems, and more.
4. What is your production lead time?
With stock: Around 30 days
Without stock: 40–45 days
5. Where is your factory located?
In Changzhou City, near Shanghai, with shipping via Shanghai Port.
Waiting for your inquiry.