Large Alloy Steel Open Die Forgings Turbine Shaft Alloy Steel Forgings

Large Alloy Steel Open Die Forgings for Wind Turbine Main Shaft Applications. Our Large Alloy Steel Open Die Forgings are specifically engineered for wind turbine main shaft applications, offering exceptional performance under high torsional loads and fluctuating environmental conditions. Manufactured from high-strength alloy steels such as 42CrMo4, 18CrNiMo7-6, or customer-specified grades, these forgings exhibit excellent toughness, fatigue resistance, and dimensional stability.

Produced using open die forging with Electrohydraulic hammer , each piece is heat treated and rough according to customer specifications. The typical forging ratio ≥ 3.0 ensures uniform grain flow and improved internal integrity, essential for the demanding lifecycle of offshore and onshore wind turbines.

Key Features

• Material Options: Premium alloy steels tailored for high load and fatigue performance

• Max Size: Outer diameter up to 3000 mm, single-piece weight up to 12 tons

• Forging Process: Open die forging → Heat treatment → Machining → NDT

• Mechanical Properties: High tensile strength, impact toughness, and torsional resistance

• Delivery Condition: As-forged, rough-machined, or fully finished as required

Applications

• Main shafts in onshore and offshore wind turbine gearboxes

• Hub connections and structural support forgings in large wind systems

• Other large rotary components exposed to cyclic stress and harsh environments

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.