Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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42CrMo, 42CrNiMo Precision Free Forgings for Excavator Breaker Hammers – Manufacturer Direct.
We specialize in the production of high-performance forged parts for hydraulic breakers, engineered to endure extreme impact loads and abrasive conditions commonly found in construction, demolition, and mining operations. Using premium-grade carbon and alloy steels, our forgings are crafted through controlled forging and heat treatment processes, ensuring outstanding strength, wear resistance, and dimensional precision.
With over five years of stable cooperation, we have served as a trusted long-term forging partner to a leading Korean heavy machinery manufacturer. Our components consistently deliver proven reliability and fatigue resistance in high-demand applications, reinforcing our reputation for quality and dependable lead times.
Key Features:
Material Grades:
42CrMo: Excellent strength, toughness, and hardenability, suitable for high-impact applications.
42CrNiMo: Enhanced fatigue resistance and superior mechanical properties for demanding environments.
Forging Process:
Open-die (free) forging with controlled grain flow to improve structural integrity and reduce internal stress.
Precision Machining:
Forgings are supplied as rough machined or semi-finished blanks, with tight tolerance control to meet OEM specifications.
Heat Treatment Options:
Quenching & tempering, normalization, or customized thermal treatment based on your mechanical property requirements.
Applications:
Hydraulic breaker pistons
Front heads and back heads
Cylinders and tool holders
Wear-resistant components in rock breakers and demolition tools
Advantages:
Manufacturer-direct pricing with no middlemen
ISO-certified process control from raw material to final inspection
Support for customized drawings and technical consultation
Consistent export supply to Korea, Southeast Asia, and European clients
If you're looking for a proven forging partner for hydraulic breaker parts or other impact-resistance components, we’re ready to support your needs with quality, speed, and expertise.
| Material | 4140,4130,18CrNiMo7-6,4340,4330,1.7225,35# 45# 20CrMnTi 20CrNi2Mo 20CrMnMo 18CrNiMo7-6 42CrMo 20CrNo 35CrMo |
| Forging Equipment | 5 TON, 8 TON, 12 TON Hydralic hammer |
| Apply for | Excavator Breaker Hammers |
| Manufacturing Process | Forging+heat treatment+rough machining |
| Forging ratio | ≥3 Ensures fine grain refinement, enhanced tensile strength, and excellent internal soundness for heavy-duty operation |
| 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, finish machining, 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. |
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)→ 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.