In the NC milling process of the workpiece cavity such as the mold, when the cut point is a concave portion or a deep cavity, the extension amount of the milling cutter needs to be lengthened. If a long-edge milling cutter is used, it is easy to breed vibration and cause tool breakage due to the large deflection of the cutter. Therefore, in the process of machining, if only the cutting edge of the tool end is required to participate in the cutting, it is better to use a short-blade long-handle milling cutter with a long total tool length. When using a large-diameter milling cutter to machine a workpiece on a horizontal CNC machine tool, due to the large deformation caused by the weight of the tool, it is necessary to pay great attention to the title of the edge cutting. When it is necessary to use a long-edge milling cutter, the cutting speed and feed rate must be greatly reduced.
Compostable means that a product is capable of breaking down into natural elements in a compost environment. Because it`s broken down into its natural elements it causes no harm to the environment. The breakdown process usually takes about 90 days. The ASTM defines compostables as anything that undergoes degradation by biological processes during composting to yield CO2, water, inorganic compounds and biomass at a rate consistent with other compostable materials and leaves no visible, distinguishable or toxic residue.
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