Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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Alloy steel forgings 42CrMo open die forging for Port machinery and lifting equipment. Our 42CrMo alloy steel open die forgings are engineered for high-performance applications in port machinery and lifting equipment. Produced through precision open die forging, these components offer excellent strength, toughness, and fatigue resistance, ensuring reliable operation under heavy loads and harsh working conditions.
The 42CrMo material, known for its superior hardenability and mechanical properties, is widely used in critical structural parts such as forged gear shafts, crane wheels, lifting hooks, and load-bearing components. Each forging undergoes strict heat treatment and non-destructive testing to guarantee internal soundness and dimensional accuracy.
Key Features:
Material: 42CrMo / 42CrMo4 alloy steel
Forging Method: Open die forging
Heat Treatment: Normalizing + Tempering
Hardness: as per specific requirements
Weight Range: 100 kg – 7 tons
Shapes Available: Round, square, stepped shafts, blocks, custom shapes
Advantages:
High strength-to-weight ratio
Excellent fatigue and impact resistance
Custom dimensions and machining available
Compliant with ISO, EN, and customer-specific standards
Full material traceability and inspection records
We design and manufacture forged parts for all industrial areas by applying our experience and unique professionalism, taking into account the specific technical and performance requirements of each market. This has made us a trusted forging partner across a wide range of industries, collaborating with world-leading companies.
A. Wind Power Generation
High-strength forged shafts and gears for wind turbines, ensuring fatigue resistance and long service life in harsh environments.
B. Port Heavy Machinery
Heavy-duty forgings for cranes, wheels, and lifting components, built to handle extreme loads and continuous operation.
C. Mining
Durable forged parts for drilling and crushing equipment, offering impact resistance and extended wear life in tough conditions.
D. Ship Building
Precision marine forgings such as propeller shafts and rudder parts, certified for strength, corrosion resistance, and reliability.
E. Chemical Industry
Forged flanges and vessel parts engineered for high-pressure, high-temperature, and corrosive chemical environments.
F. Oil Industry
Robust forgings for drilling and wellhead systems, designed to withstand high stress, pressure, and harsh field conditions.
| Item | Details |
|---|---|
| Product Name | 42CrMo Port Machine ISO Forgings – Heavy-Duty Crane Wheel Manufacturer |
| Material Grades | - Carbon and Alloy Steels: 42CrMo, 18CrNiMo7-6, 20CrNi2Mo, 4340, 35CrMo, 20CrMnTi, 20CrMnMo |
| Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T - Supports large-section open die forging |
| Manufacturing Process | Forging → Heat Treatment → Rough Machining → Dimensional & NDT Inspection |
| Forging Ratio | ≥ 3.0 — Ensures fine grain refinement, enhanced tensile strength, and excellent internal soundness for heavy-duty operation |
| Applications | Precision-forged components for: - Gearbox main shafts - Thrust flanges and coupling hubs - Marine transmission and propulsion shafts - Rudder stocks and steering gear drives - Suitable for both marine and industrial mechanical systems |
| Delivery Conditions | - N+T (Normalized + Tempered): For pre-machined rough parts |
| Testing & Inspection | - Chemical Analysis: Optical Emission Spectrometry - Mechanical Tests: Tensile , Impact , Hardness - NDT: UT , MT - Dimensional Control: Bore dial indicators, precision micrometers |
Forging process flow quality control:
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)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment.
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.