Introduction
Precision metal etching, also known as photochemical machining (PCM), is a high-accuracy manufacturing process used to produce complex thin metal components without mechanical stress or tooling costs.
At Xinhaisen, we specialize in precision etching for global industries including hydrogen energy, automotive, aerospace, medical devices, and electronics. Our key products include fuel cell bipolar plates, optical encoder discs, precision metal mesh, and custom etched components.
Common search terms include:
- precision metal etching manufacturer China
- etched bipolar plate supplier
- optical encoder disc manufacturer
- stainless steel filter mesh custom
- photochemical machining service
What Is Precision Metal Etching?
Precision etching uses a photoresist mask and controlled chemical solution to selectively remove metal, forming highly accurate geometries.
Unlike stamping or CNC machining, etching:
- Requires no hard tooling
- Produces burr-free edges
- Maintains material integrity
- Enables micro-scale precision patterns
Typical tolerances can reach ±0.01 mm, making it ideal for fine mesh, flow channels, and encoder patterns.
Key Applications of Metal Etching
1. Fuel Cell Bipolar Platesz
Etched flow field plates are widely used in PEM fuel cells and hydrogen electrolyzers.
- Stainless steel 316L / titanium materials
- Complex gas flow channel design
- Rapid prototype development
2. Optical Encoder Discs
Used in motion control systems and robotics.
- High-resolution incremental patterns
- Excellent dimensional accuracy
- No burrs or distortion
3. Precision Metal Mesh & Filters
Applied in medical, aerospace, and industrial filtration systems.
- Uniform aperture control
- Corrosion-resistant materials
- Custom thickness and geometry
Why Choose Chemical Etching Over Stamping?
| Feature | Etching | Stamping |
|---|---|---|
| Tooling cost | Low | High |
| Design flexibility | High | Limited |
| Prototype speed | Fast | Slow |
| Precision | Very high | Medium |
At Xinhaisen, etching is preferred for R&D and medium-volume production where flexibility and accuracy are critical.
Materials We Process
- Stainless steel (304, 316L)
- Nickel alloys
- Copper
- Titanium
Thickness range: 0.02 mm – 1.5 mm
Why Xinhaisen?
Xinhaisen is a professional precision metal etching manufacturer with over 13 years of experience.
We provide:
- Custom OEM/ODM manufacturing
- Fast prototyping (5–10 days)
- High precision ±0.01 mm
- Global export capability
- One-stop engineering support
We help customers reduce development cost while improving design accuracy and speed to market.
FAQ
What industries use precision metal etching?
Hydrogen energy, automotive, aerospace, medical devices, electronics, and renewable energy systems.
Can etched parts replace stamped parts?
Yes, especially in prototypes and medium-volume production where design flexibility is required.
What is the minimum feature size in etching?
Typically down to 0.01 mm depending on material and thickness.
Is chemical etching suitable for mass production?
Yes, especially when designs are finalized and require high repeatability.
Conclusion
Precision metal etching is a critical technology for modern engineering industries requiring high accuracy and flexible design.
With capabilities in bipolar plates, encoder discs, and precision mesh, Xinhaisen provides reliable and cost-effective solutions for global customers seeking advanced metal component manufacturing.
