METHOD OF STRENGTHENING FURNACE ROLLER WITH GAS-THERMAL COATING

FIELD: metallurgy. ^ SUBSTANCE: invention refers to metallurgy and can be implemented at fabrication of rollers for aggregates of thermal treatment of sheet iron. There is applied gas-thermal coating containing a sub-layer and working layer on base of aluminium oxide. The sub-layer is produced by me...

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Hauptverfasser:	SHATOV JURIJ SEMENOVICH, RADJUK ALEKSANDR GERMANOVICH, KUZNETSOV ALEKSANDR EFIMOVICH, BESHKINSKIJ SERGEJ BORISOVICH, TITLJANOV ALEKSANDR EVGRAFOVICH, BORODIN IVAN PETROVICH, KUZNETSOVA GALINA VIKTOROVNA
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	FIELD: metallurgy. ^ SUBSTANCE: invention refers to metallurgy and can be implemented at fabrication of rollers for aggregates of thermal treatment of sheet iron. There is applied gas-thermal coating containing a sub-layer and working layer on base of aluminium oxide. The sub-layer is produced by means of sputtering heat-sensitive powder Ni-Al, while the working layer is produced with sputtering a mixture of Ni-Al alloy and aluminium oxide at contents of aluminium oxide in mixture not less, than 50 % of volume. Thickness of the working layer is 0.6-0.8 mm. ^ EFFECT: increased operation life and quality of furnace roller coating. ^ 2 cl, 1 ex Изобретение относится к области металлургии и может быть использовано при изготовлении роликов для агрегатов термической обработки тонколистового проката. Наносят газотермическое покрытие, содержащее подслой и рабочий слой на основе оксида алюминия. Подслой получают напылением термореагирующего порошка Ni-Al, а рабочий слой - напылением смеси Ni-Al сплава и оксида алюминия с содержанием оксида алюминия в смеси не менее 50% по объему. Толщина рабочего слоя составляет 0,6-0,8 мм. Повышается долговечность и качество покрытия печных роликов. 1 з.п. ф-лы.