To extend the life of the tool, professional manufacturers will increase the strength of the tool. Many CNC tool cutter body materials using high-strength steel, and heat-treated (e.g., surface treatment such as nitriding). So that it can be applied to a large amount of cutting and the tool life can be significantly improved. Normal tool is generally used after quenching medium carbon steel. On the tool blade portion material, more use of the CNC tool various new grades of cemented carbide (fine particles or ultrafine particles) and ultra hard cutting tool materials.
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