Semiconductor manufacturing equipment, such as vacuum chambers, gas distribution systems, and wafer handling devices, requires high-precision mechanical components. The quality of these parts directly affects wafer production yields. Tik Precision provides CNC machining services for the semiconductor industry, meeting essential requirements for dimensional accuracy and surface quality.
Machining Requirements for Semiconductor Equipment
Semiconductor equipment operates in specialized environments, requiring strict adherence to CNC machining tolerances:
- Ultra-High Vacuum (UHV): Chamber components must minimize outgassing. Machining must ensure material density and avoid porosity or inclusions.
- Particulate Control: Surfaces are treated to reduce particle shedding. Electropolishing is often required to achieve a surface roughness of Ra ≤ 0.1 µm.
- Corrosion Resistance: Processes like etching involve corrosive gases. Components are typically made from stainless steel or Hastelloy, often with necessary surface coatings.
- Thermal Stability: Parts must maintain dimensional stability during temperature fluctuations to prevent deformation caused by thermal expansion.
Common Semiconductor Mechanical Components
Vacuum System Components
Vacuum chambers and lids often feature complex internal structures. We utilize CNC milling services to achieve these geometries and ensure the flatness of sealing surfaces.
- Chamber Bodies and Flanges: Mostly made of aluminum alloy or stainless steel, with sealing surface precision controlled at the micron level.
- Viewport Assemblies: Designed to maintain vacuum integrity throughout thermal cycling.
Wafer Handling Components
Wafer transfer parts require high rotational precision and smooth surface finishes, typically achieved through CNC turning services.
- End Effectors: Parts that contact wafers, often made of ceramic or anodized aluminum, requiring surfaces free of particle residue.
- Wafer Chucks: Require high flatness, typically within 5 µm across a 300mm diameter.
Common Materials Reference
| Material | Application Example | Machining Notes |
|---|---|---|
| 6061-T6 Aluminum | Vacuum chambers, chucks | Easy to machine; usually requires hard anodizing. |
| 316L Stainless Steel | Gas lines, fittings | VAR grade recommended to reduce impurities; requires electropolishing after machining. |
| Hastelloy | Corrosive gas environments | Difficult to machine; requires appropriate tooling and parameters. |
| Alumina Ceramic | Wafer handling parts | Requires diamond grinding after sintering. |
Surface Finishing and Cleaning
Surface treatment standards for semiconductor parts are similar to optical component machining, emphasizing microscopic surface quality.
- Electropolishing: Reduces microscopic roughness on stainless steel surfaces.
- Ultrasonic Cleaning: Removes cutting fluids and residual particles from the machining process.
- Cleanroom Packaging: Double-bagged in a controlled environment to prevent contamination during transport.
Tik Precision provides essential CNC machining support for semiconductor equipment, covering chambers, manifolds, and handling components. We provide machining, cleaning, and packaging services based on customer drawing requirements.
