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Из опыта применения электродугового напыления для восстановления и ремонта деталей металлургического оборудования

Из опыта применения электродугового напыления для восстановления и ремонта деталей металлургического оборудования

Abstract

It has been shown that the electric arc spraying with the use of powder wires can be used to repair and restore parts of metallurgical equipment. The technology of spraying parts by means of the cored wire Steelcored M8TUV; T462MMIN5 and combinations of steel and aluminum wires to restore shaft-gears, shaftbeams, cranes axles for the foundry of the Moldavian Metallurgical Plant has been introduced. The composition of the flux-cored wires MMP-2,3 developed at the Department of Equipment and welding production technology of PSTU that provides the required hardness and adhesion of the coating and the substrate have been shown and the results of the coatings properties studies have been published. Studies have shown matching properties of the coatings to be used for details of the metallurgical equipment working under difficult conditions, including the rolls of rolling mills. Cored wire was used for pilot plating of the rolls surface of the skin-rolling stand at the cold-rolling mill at Illich Steel and Iron Works, Mariupol. Residual coating thickness ranged from 15 to 25 microns. Strip sized 0,9 × 1025 mm has been rolled, the squeezing is equal to 0,8...1,0%.

Показано, что процесс нанесения покрытий электродуговой металлизацией порошковыми проволоками может применяться для ремонта и восстановления деталей машин металлургического оборудования. Представлена технология напыления деталей порошковой проволоки Steelcored M8TUV; T462MMIN5 и комбинациями проволок из стали и алюминия для восстановления валов-шестерен, валовбалок, осей для кранов литейного цеха на Молдавском металлургическом заводе. Приведен состав порошковых проволок ПММ-2,3, разработанных на кафедре Оборудования и технологии сварочного производства ПГТУ, обеспечивающий требуемую твердость и прочность сцепления покрытий с основой, результаты исследования свойств покрытий. Порошковая проволока применена для опытнопромышленной металлизации поверхности валков дрессировочной клети стана холодного проката на ОАО «Мариупольский металлургический комбинат им. Ильича». Остаточная толщина покрытия составила от 15 до 25 мкм. Проводился прокат полосы 0,9×1025 мм, с режимом обжатия 0,8...1,0%.

Keywords

электродуговая металлизация, порошковая проволока, прочность сцепления, условия нагружения, твердость покрытия, износостойкость покрытия, вал-шестерен, вал-балка, бочка рабочего валка, толщина покрытия, режим вжатия

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold