PROTECTIVE COATING OF STEEL PIPELINE AGAINST UNDERGROUND CORROSION

FIELD: metal protection.SUBSTANCE: invention relates to the field of protection of metals from corrosion. It is proposed to use the products of the purification of spent engine oil, isolated during the cleaning process with the help of separating agent carbamide as a protective coating of the steel...

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Hauptverfasser:	Tanygina Elena Dmitrievna, Nazarova Anna Anatolevna
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 MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	FIELD: metal protection.SUBSTANCE: invention relates to the field of protection of metals from corrosion. It is proposed to use the products of the purification of spent engine oil, isolated during the cleaning process with the help of separating agent carbamide as a protective coating of the steel pipeline from underground corrosion. Waste engine oil purification products belong to the third hazard class, are accessible due to the lack of restrictions on the raw material base, are hydrophobic, in addition, they are an inhibitor of anodic action against underground corrosion of steel, their protective efficiency reaches 70-95%.EFFECT: resulting products are hydrophobic and are an inhibitor of anodic action against underground corrosion of steel.1 cl, 5 tbl Изобретение относится к области защиты металлов от коррозии. Предложено применение продуктов очистки отработанного моторного масла ПООМ, выделенных в процессе очистки с помощью разделяющего агента карбамида, в качестве защитного покрытия стального трубопровода от подземной коррозии. Продукты очистки отработанного моторного масла относятся к третьему классу опасности, являются доступными из-за отсутствия ограничений сырьевой базы, гидрофобны, кроме того, являются ингибитором анодного действия по отношению к подземной коррозии стали, защитная эффективность достигает 70-95%. 5 табл.