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Precautions for CNC Lathe Machining Turning Copper Screws

Views: 18     Author: Site Editor     Publish Time: 2023-08-18      Origin: Site

When turning copper screws, you must first know that the copper content of pure copper is 99.5% under normal conditions, and the hardness of pure copper in the annealed state is generally 35-45HB. In order to ensure the processing quality of copper screws, the following items should be paid attention to when processing copper screws.


1. During the processing, chips may stick to the cutting edge, which affects the quality of copper screw processing and the service life of the tool.


2. The surface of the copper screw is prone to produce water-like waves and noises.


3. The expansion coefficient of pure copper is large. When cutting, deformation will occur due to the influence of high temperature, so the size and precision of copper screw processing are difficult to grasp.


4. If the copper parts contain sulfur and other easy-cutting elements, it will affect the machinability of the copper parts. The toughness and plasticity of copper parts are relatively large, and the deformation generated during cutting is also large. Therefore, the knife should be sharp, so that the cutting will be smoother, the temperature generated during cutting will be smaller, and the deformation of the copper sheet will be smaller.


If lead is added to copper parts, the machinability is greatly improved and the cutting speed is also improved. There are many types of bronze with poor anisotropy, but machinability is greatly improved in the case of leaded bronze.


In the processing of copper parts, the faster the cutting speed, the smaller the cutting force, so that the deformation of copper parts during processing will be relatively small. The surface quality of the copper alloy is so good that no further finishing is required in post. The faster the cutting speed, the better the surface quality of the copper screw.


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