| 摘要 |
Methods of making cutting blades in aluminium or its alloys are provided. The methods include the steps of making a sheet in aluminium or its alloys having the shape of the desired cutting blade, performing a sharpening operation of the blade, subjecting the blade to an anodising process, so as to form at least on the portion of the sharpened blade a layer of aluminium oxide (Al2O3). The sharpening operation includes laying the sheet on a planar support surface and causing a sharp cutter for aluminium advance along the peripheral edge of an outer portion of the sheet surface opposite the support surface suitable for reducing the thickness of said edge according to a predefined angle of sharpening so as to obtain a cutting edge by removal of the shaving. Cutting blades are also provided. |
