ПРИМЕНЕНИЕ ТЕХНОЛОГИИ HVOF ДЛЯ ПОЛУЧЕНИЯ ИЗНОСОСТОЙКИХ ПОКРЫТИЙ НА ОСНОВЕ WC – ОБЗОР

В статье приведены основные проблемы износа и срока эксплуатации шиберных задвижек для магистрального трубопроводного транспорта нефтяной и газовой промышленности. Одним из возможных способов решения этих проблем является нанесение тонкого слоя износостойких и коррозионностойких покрытий. В связи с постоянно растущей стоимостью материалов, а также возросшими требованиями к материалам в последнее время все большее значение придается методам нанесения покрытий. Среди газотермических методов нанесения покрытий технология высокоскоростного кислородно-топливного напыления (HVOF) является новой и быстро развивающейся технологией, которая позволяет получать покрытия высокой плотности с пористостью менее 1%, обладающие повышенной твердостью и адгезией, а также  улучшенными свойствами эрозии, коррозии и износостойкости.   В этой обзорной статье проведен сравнительный обзор характеристик карбидных покрытий, полученных с использованием различных технологий напыления.

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