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Laser surface treatment technology significantly extends the service life of CBN tools.
2025-12-16
Laser surface treatment technology offers an innovative solution for enhancing the service life of CBN (cubic boron nitride) cutting tools. This technology precisely applies a high-energy laser beam to the tool’s surface, leveraging its rapid heating and cooling characteristics to optimize the material structure at the microscale. For instance, laser-induced phase transformation hardening can form a highly hardened martensitic structure on the tool’s surface, significantly improving its wear resistance. Meanwhile, laser cladding technology enables the creation of metallurgically bonded, wear-resistant coatings on the tool’s surface, thereby reducing wear during machining.
Given the brittle nature of CBN tools, laser surface treatment enhances material toughness by refining grain size and eliminating internal defects. Experimental data show that CBN tools subjected to laser treatment exhibit a more than 30% increase in cutting-edge strength when machining high-hardness materials, with a 50% reduction in the risk of chipping. Meanwhile, the non-contact nature of laser treatment avoids surface damage that could be introduced by conventional mechanical strengthening methods, thereby preserving the tool’s geometric accuracy.
In precision applications such as the machining of aero-engine blades, CBN tools treated with laser technology have a tool life that is twice as long as that achieved by conventional methods, and the cost per part processed is reduced by 40%. This technology also enables localized reinforcement, allowing targeted treatment of areas on the tool that are prone to wear, thereby further improving material utilization. By precisely adjusting laser parameters, it is possible to optimally balance surface hardness and toughness, meeting the requirements of various operating conditions and providing reliable technical support for high-end manufacturing.
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