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The patent EP3374537 was granted to Sandvik on Oct 23, 2024. The application was originally filed on Oct 20, 2016 under application number EP16785435A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".
A method for producing a coated cutting tool by pre-treating the substrate in two steps. The first step uses a glow filament to create a plasma of noble gas ions for etching, while the second step employs High Power Impulse Magnetron Sputtering (HIPIMS) to introduce metal ions into the substrate surface. The two-step process enables controlled etching and ion implantation without preferential edge etching or excessive substrate heating, maintaining the tool's original geometry and material properties.

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