ON THE APPLICATION OF THE FUNCTIONAL APPROACH TO THE METHODS OF PROCESSING LAYERED SUPERHARD COMPOSITES
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- TITLE: ON THE APPLICATION OF THE FUNCTIONAL APPROACH TO THE METHODS OF PROCESSING LAYERED SUPERHARD COMPOSITES
- ABSTRACT: Layered superhard composites are widely used in the manufacture of tool components, special products of aviation and space technology. Typically, these products are a plates of regular geometric shape, the final shaping of which is made by diamond grinding. Proposed finish processing of composite materials is to implement hybrid methods based on laser-jet technologies, with use the functional approach. In terms of composite materials processing laser-jet is a hybrid, capable of a certain way to influence the components of the composite at different levels – from nanozone to macrovolume. The hybridization process, which is consist of scribing, water-jet cutting, smoothing of the surface will allow according to the structure of the processed composite plates get high quality cuts. Field experiments were performed on laser-jet complex of LSK-400-5, equipped with a abrasive-jet head with water nozzle d c=0,22 mm and calibration tube Dk=1,05 mm, and also a system of combining a laser jet with the liquid stream by means of flying optics. Process of cutting the plates was performed using a Nd: YAG laser with a power of 400 W, and operating at a frequency of 50 Hz. Composite plate is a layered system coated with base layer of cubic boron nitride with 2,8 mm, common plate thickness – 4,5 mm. Using a functional approach allowed us to obtain high-quality cut (the roughness of the end is 3,2 μm, the width of the slot is 0,12 mm), while the time to perform the operation of cutting at a specified contour made up only 1,8 min.
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