5-Axis CNC Machining for Centrifugal Impellers & Turbomachinery

Precision-Driven Performance | Custom CNC Machining Solutions for Centrifugal Compressor Components

1. Comprehensive Material Processing Capabilities

• Corrosion-Resistant & High-Strength Alloys:
  • Duplex / Super Duplex Stainless Steel: 2205, 2507 (ideal for environments containing hydrogen sulfide or high chloride ions)
  • Precipitation-Hardening Stainless Steel: 17-4PH (SUS630), 15-5PH (combines ultra-high strength with outstanding fatigue resistance)
  • Nickel-Based High-Temperature Alloys: Inconel 625, Inconel 718, Monel 400 (for high-temperature and highly corrosive environments)
• Lightweight Materials for High Rotational Speeds:
  • Titanium Alloys: TC4 (Ti-6Al-4V), TC11 (high strength-to-weight ratio, widely used for high-speed impellers)
• High-Grade Structural & Alloy Steels:
  • 35CrMo, 42CrMo, 40CrNiMoA, SNCM439 (quenched and tempered for heavy-duty main shafts and gear components)
• Specialty Engineering Plastics & Sealing Materials:
  • PEEK, PTFE, and Copper Alloys (C93200, QAl9-4) for precision oil-free seal rings, bearings, and bushings.

2. Core Manufacturing & Machining Capabilities

• 5-Axis CNC Milling:
  • Specially optimized for closed (shrouded) impellers, open impellers, and diffuser vanes. Achieves seamless 5-axis continuous contouring to guarantee smooth flow channels and superior aerodynamic performance.
• Precision Turn-Mill Multi-Tasking:
  • Single-setup machining for main shafts, high-pressure casing components, and sleeves—ensuring concentricity and position accuracy within microns.
• Deep Hole Drilling & Precision Boring:
  • Capable of machining long axial center-holes and lubrication oil channels with strict straightness and diameter control.
• Precision Grinding (OD, ID, Surface):
  • Fine grinding for shaft journals and seal faces, achieving surface finishes down to $Ra\ 0.2\ \mu\text{m} – Ra\ 0.4\ \mu\text{m}$.
• Specialized Processing & Surface Finishing:
  • EDM / Wire EDM: For narrow slots, internal splines, and keyways.
  • Surface Hardening & Coating: Nitriding, hard chrome plating, HVOF (High-Velocity Oxygen-Fuel) thermal spraying, and shot peening to maximize wear and corrosion resistance.

3. Strict Quality Assurance & Testing

• Dynamic Balancing: High-precision dynamic balance testing and calibration for all high-speed rotating components to eliminate vibration.
• Non-Destructive Testing (NDT): Full support for PT (Penetrant Testing), MT (Magnetic Particle Testing), and UT (Ultrasonic Testing) to verify structural integrity.
• Full CMM Inspection: 100% dimensional and geometric tolerance verification using Coordinate Measuring Machines (CMM) with full inspection reports.

4. Flexible Service Models

• Prototyping & Small-Batch Production: Rapid turnaround for R&D, emergency repair, and reverse engineering of legacy spare parts.
• High-Volume Custom Manufacturing: Reliable long-term supply chain partner for compressor OEMs.