{'fraction_non_alphanumeric': 0.019230769230769232, 'fraction_numerical': 0.003036437246963563, 'mean_word_length': 4.683908045977011, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
A New Process for Internal Polishing of Cemented Carbide Using a Vibrating Tool with Two-Dimensional Small Motions

Abstract. In this study, the interior of a cemented carbide mould is polished using equipment with a vibrating tool. The tool shaft, which is made of wood, has rotational and vertical movements, and is at the center of the electromagnetic coil. The surface of the tool shaft is coated with a mixture of hydrophilic bond and diamond particles. The tip of the tool shaft generates a small vibration, as alternating current is supplied to the electromagnetic coil. This method is a new process for internal polishing of cemented carbide moulds using a vibrating tool. A permanent magnet is fixed on the tool shaft, by which small vibrating motions are obtained in a magnetic field. Experimental results were obtained. The amplitude of the vibrating tool was over 3 μm. The surface roughness of the workpiece was decreased by 40%, compared to the one without small vibrations.