Matters needing attention in copper processing

1. Red copper is the most common copper part we process, but red copper is softer and more viscous. During processing, the bonding between chips and the surface of the front knife should not fall off. Therefore, red copper is considered a material that is more difficult to process.

2. Generally, high-speed steel cutters with large rake angles and helix angles are used for cutting, and the number of cutter teeth should not be too many. The chip pockets should be as round and wide as possible, and the front and rear edges should be smoothed with oilstone. Sharpen the blade in time to keep it sharp in use.

3. The processing of red copper is mainly based on oily cutting oil with high lubricity, which does not stick to the tool, and the surface of the processed product is not oxidized. When cutting, try to choose a large feed rate and the cutting speed should not be too high. The specific data can be based on the site Process conditions are tested.

4. Pay special attention to the sharpness of the tool during the finishing milling process. After the main cutting edge is passivated, the machining surface of the workpiece will be subjected to a lot of pressure, resulting in greater heat energy, which is easy to form a built-up edge on the rake face, causing the roughness to rise . It also destroys dimensional stability.

Compared with red copper, the hardness of copper is increased, and it is more brittle, and may slip during processing. The cutting tool can be high-speed steel or alloy cutting tool. The cutting fluid is recommended to use extruded anti-wear semi-synthetic cutting fluid

Bronze, especially beryllium bronze, has higher hardness. Ordinary high-speed steel for aluminum can no longer meet the processing needs. It is recommended to use better alloy steel or tungsten steel milling cutters for processing. When the cutting fluid is selected, the special water-based cutting fluid for copper is selected.

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