Metal Custom CNC Cast Q345 Welding Steel Generator Rotor
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Metal Custom CNC Cast Q345 Welding Steel Generator Rotor

The generator rotor weldment is one of the core structural components in power generation equipment. It is fabricated from Q345 high-strength structural steel and formed through multi-section high-precision welding, providing excellent load-bearing capacity and fatigue resistance.
After welding, the component undergoes stress-relief annealing to enhance structural stability. Key positioning surfaces are machined using CNC equipment to ensure high coaxiality and dynamic balance precision.This weldment is widely used in medium and large-scale equipment such as steam turbine generators and wind power generators, serving as a critical foundation for efficient and reliable power generation.
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Product Advantage

1. High-Strength Structural Material

Made from premium Q345 alloy high quality structural steel, the rotor weldment offers excellent mechanical properties and weldability. It is capable of withstanding the intense centrifugal force and vibration loads from high-speed rotor operation, ensuring long-term performance without deformation or cracking.

2. Precision Welding for Structural Stability

Utilizing multi-pass CO₂ shielded welding or submerged arc welding (SAW), the seam welding services are continuous, and low in internal defects. Full-penetration welding is applied to critical sections, and ultrasonic testing (UT) is performed to ensure high welding strength and operational safety.

3. Stress Relief Heat Treatment & High-Precision Machining

Post-weld annealing is conducted to fully eliminate internal stresses and prevent deformation or cracking caused by thermal strain. Key assembly surfaces and outer diameters are machined using large-scale CNC horizontal or gantry milling machines to ensure strict coaxiality, dynamic balance, and surface roughness—meeting the demanding requirements of high-speed rotation.

4. Customizable to Fit Various Rotor Designs

Rotor weldments can be customized based on customer drawings or technical specifications, supporting various sizes and structural configurations. These are compatible with steam turbine, wind power, and hydropower generator systems, meeting specific structural and performance requirements across different power generation applications.


Technical Parameters

Product ParametersContent
Product NameGenerator Rotor
ApplicationGenerator
MaterialQ345
Weight15-30KG
Tolerance ClassIT6
Minimum Order Quantity≥100EA
Surface RoughnessRA0.8
Processing TechnologyCasting – Finish Machining
Production VolumeOver 30 Pieces Per Month
Heat TreatmentQuenching and Tempering
HardnessHRC28-32


Product Uses

1. Steam Turbine Generator Units

Used in large-scale thermal power plants, the welded rotor serves in steam turbine generators operating under high-speed rotation. It demands exceptional structural rigidity and dynamic balance. The stable welded rotor structure ensures reliable performance under long-term high-temperature and high-speed conditions.

2. Wind Power Generation Systems

Applied in megawatt-class wind turbine generators, the rotor is formed through precision welding and machining. It features a lightweight structure, high strength, and excellent fatigue life, making it suitable for variable load conditions commonly encountered in wind energy applications.

3. Hydroelectric Generator Equipment

In large hydroelectric generators at power stations, welded rotors are used to integrate and drive the magnetic pole structures. They offer superior coaxiality and dynamic balance, ensuring efficient and stable power generation of the unit.

4. Diesel Generator Sets

Used in small- to medium-sized backup power systems, the welded rotor design simplifies manufacturing, improves machining efficiency, and reduces costs. It is well-suited for customized batch production and supply.


Product Operate Guide

Before installation, inspect the rotor's appearance and key dimensions to ensure they meet the drawing specifications. Pay special attention to the coaxiality of locating surfaces and the runout of flange end faces.During hoisting, use dedicated lifting equipment to avoid axial bending or damage to weld seams. Ensure that the rotor axis is properly aligned with the stator center during installation. A dynamic balance test must be completed before the initial startup.After commissioning, regularly inspect the weld seams and bearing contact areas to ensure long-term stable operation.


Product Video



FAQ

1. Q: How is welding quality ensured?

A: We use CO₂ gas shielded welding or submerged arc welding (SAW), with full-penetration welds applied to critical areas. All welds undergo ultrasonic testing (UT) to ensure density, high strength, and excellent reliability.


2. Q: Do you offer custom manufacturing services?

A: Yes, we provide OEM/ODM customization services. You only need to provide detailed product drawings, and we can manufacture according to your specific requirements for material, dimensions, weight, surface treatment, and more.


3. Q: What is your minimum order quantity (MOQ)?

A: For custom products, the standard MOQ is typically 10 units. However, the quantity can be adjusted flexibly depending on the product model, specifications, material, and manufacturing process.


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We specialize in precision machining of metal mechanical components, serving high-end equipment industries such as agriculture, construction machinery, and machine tools.

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