1. High-Precision Copper CNC Machining

Our CNC Machining for Copper Components enables the precise manufacturing of highly conductive parts for industries like energy, electronics, and industrial automation. We manage challenges like burr control, oxidation, and tool wear with advanced processes.

• Materials supported: C110, C145, brass, bronze, beryllium copper
• ±0.01mm dimensional control on critical surfaces
• Bright finish, low-burr, and oxidation-resistant post-processing

2. Why CNC Machining Copper is Unique

● High Ductility & Tool Load

Copper is soft but sticky—tools dull fast, chips adhere, and burrs form easily. We use high-rake angle cutters, special coolants, and multi-pass strategies to keep parts clean and accurate.

● Surface Protection & Oxidation Control

Post-machining, we clean parts with non-abrasive solutions and optionally apply anti-oxidation coatings to preserve finish and conductivity during transport or storage.

3. Case Study: Power Connector Lugs for EV Modules

Project Summary

A New Energy customer ordered 8,000 pieces of copper terminal lugs with M6 threaded holes, flat cable seats, and strict surface flatness of 0.05mm. Finish: mirror-polished, anti-oxidation treated.

Production Workflow

• ① Raw Material Control: All C110 copper bars were certified and traceable, cut with low-speed saws to prevent heat distortion.
• ② CNC Machining: Milling with minimal tool pressure and frequent coolant flushing to reduce built-up edge.
• ③ Threading: Tapped holes checked with calibrated plug gauges, thread burrs manually cleared.
• ④ Polishing: Vibration + manual mirror polishing, Ra ≤ 0.8μm verified on each batch.
• ⑤ Coating & Packing: Surface treated to resist oxidation, packed in foam trays for safe shipment.

4. CNC Copper Parts We Commonly Deliver

• Heat sinks and thermal plates
• Electrical contacts and busbars
• Precision spacers and RF shields
• Custom high-current terminals and fittings

5. Common Questions for Copper CNC Projects

● Can you machine ultra-flat copper surfaces?

Yes. We use fly-cutting and controlled finishing cycles to achieve flatness ≤0.02mm on large surface areas.

● What about discoloration or oxidation before shipping?

We clean all copper parts post-machining and can apply temporary surface protection or clear coatings depending on your storage time and logistics plan.

● Do you support copper + aluminum assembly matching?

Yes, we can machine both materials in-house and ensure mating holes or surfaces match across different metal types.

6. Secure File & Design Handling

We understand copper parts often relate to electrical systems or proprietary assemblies. All drawings and samples are treated under NDA and restricted-access systems.

7. Get a CNC Quote for Copper Machining

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