Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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Our forged planetary gears are engineered to withstand demanding industrial conditions. Using high-quality 18CrNiMo, 45# steel, and 42CrNiMo alloy steel, these gears deliver exceptional mechanical strength, wear resistance, and long service life. Ideal for wind power gearbox systems and metallurgical machinery.
This large forged disc is manufactured from high-performance alloy and carbon steels such as 18CrNiMo7-6, 45#, 42CrNiMo, and 42CrMo, offering excellent mechanical strength, toughness, and wear resistance. It is widely used in metallurgical equipment, industrial gearboxes, and heavy-duty rotating systems where reliability under high stress and long service life are essential.
The forging process ensures a fine grain structure and superior internal quality compared to cast parts, while optional heat treatment (tempering, or normalizing) enhances performance for specific applications. Available in rough machined or finish-machined condition upon request.
Customizable sizes: Module M3–M12, gear diameter up to 1.8 meters
Forged gear weight range: 10 kg to 5000 kg
Quality assurance: Ultrasonic testing, hardness testing, and gear accuracy inspection (Grade 7–8)
Machining services: Rough machining, precision machining, gear hobbing, surface treatment
| Item | Details |
|---|---|
| Product Name | 18CrNiMo7-6, 45# Steel, 42CrNiMo,42CrMo Large Forged Disc for Metallurgy, Industry Gearbox |
| Material Grades | - Alloy steels or carbon steel such as 42CrMo4, 18CrNiMo7-6,45# or customized grades designed for heavy load and abrasive working conditions |
| Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T- Capable of open die forging for medium to large-sized gear blanks |
| Manufacturing Process | Forging → Heat Treatment → Rough Machining → Gear Hobbing/Shaping → (Optional) Gear Grinding → Precision Inspection |
| Forging Ratio | ≥ 3.0 — Ensures dense grain structure, enhanced fatigue resistance, and long service life under extreme loads and shock conditions |
| Heat Treatment Options | - Normalizing and tempering for improved strength and toughness |
| Applications | - Metallurgy, Industry Gearbox |
| Process Compliance | - Fully customized manufacturing based on customer drawings, gear parameters, and operating conditions |
| Delivery Conditions | - Heat treated and supplied as rough-machined or finish-machined gears- Optional hardened gear teeth for extended durability in harsh environments |
| Testing & Inspection | - Chemical Composition Testing- Mechanical Testing: Strength, Toughness, Hardness- NDT: Ultrasonic Testing (UT), Magnetic Particle Testing (MT) systems |
Advantages:
Excellent fatigue strength and wear resistance
Stable performance under high torque and heavy loads
Superior grain flow and low internal defects
OEM customization supported
Applications:
Process flow:
raw material inspection → unloading → inspection → preheating → forging → heat treatment → inspection → rough machining → non-destructive testing → inspection → packaging → delivery.
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.
Request a Quote
Please send your technical drawings and requirements to us. Our engineers will review and provide you with a professional quotation and solution shortly.