SU380754A1 - METHOD OF CHEMICAL DEGREASTING METAL SURFACES - Google Patents

METHOD OF CHEMICAL DEGREASTING METAL SURFACES

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Publication number
SU380754A1
SU380754A1 SU1320123A SU1320123A SU380754A1 SU 380754 A1 SU380754 A1 SU 380754A1 SU 1320123 A SU1320123 A SU 1320123A SU 1320123 A SU1320123 A SU 1320123A SU 380754 A1 SU380754 A1 SU 380754A1
Authority
SU
USSR - Soviet Union
Prior art keywords
chemical
metal surfaces
degreasting
degreasing
pipelines
Prior art date
Application number
SU1320123A
Other languages
Russian (ru)
Inventor
Л. П. Злодеева Г. Д. Дмитрекко Э. П. Лисовска Т. В. Трактирова Г. С. Волкова
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1320123A priority Critical patent/SU380754A1/en
Application granted granted Critical
Publication of SU380754A1 publication Critical patent/SU380754A1/en

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Description

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Изобретение относитс  к способам химического обезжиривани  металлических поверхностей , в частности, внутренней поверхности трубопроводов, преимущественно систем кислорода , гели , азота, их смесей п обезжиренного воздуха.The invention relates to methods for chemical degreasing metal surfaces, in particular, the internal surface of pipelines, mainly oxygen, gels, nitrogen systems, their mixtures and non-fat air.

Известен способ обезжиривани  металл;;ческих поверхностей путем цир.кул пии обезжиривающего раствора в турбулентном режиме вдоль очищаемой поверхности. Однако этот способ в р де случаев не обеспечивает эффективной очистки внутренней поверхности трубопроводов.There is a known method of degreasing a metal ;; cic surfaces by means of a circulary of a degreasing solution in the turbulent regime along the surface being cleaned. However, this method in some cases does not provide an effective cleaning of the internal surface of pipelines.

Иредложенный способ интенсифицирует процесс очистки внутренней поверхности трубопроводов .The proposed method intensifies the process of cleaning the internal surface of pipelines.

Это достигаетс  тем, что циркул цию осуществл ют в турбулентном режиме с числом Рейнольдса Re 0,1 d внутр. (20000-30000).This is achieved by circulating in a turbulent mode with a Reynolds number Re 0.1 d internal. (20000-30000).

В качестве обезжиривающего раствора может быть использован 2%-ный раствор препарата МЛ-2, подогретый до 70-90° С. При скорости потОКа 3-4 MJCBK обезжиривание ведут 45-60 мин « затем систему промываютAs a degreasing solution, a 2% solution of the drug ML-2, heated to 70-90 ° C, can be used. At a flow rate of 3-4 MJCBK, degreasing is carried out for 45-60 minutes "then the system is washed

дистиллированной водой и продувают обезжиренным воздухом или азотом. Данный способ обезжириван 1  увеличивает производительность процесса в 8-12 раз.distilled water and rinsed with degreased air or nitrogen. This method is degreased 1 increases the productivity of the process in 8-12 times.

При циркул цип раствора со скоростью менее 3 м/сек число Re менее 20000 и не происходит удалени  загр зненлй с поверхности при длительной обработке в течение 5-6 час. Использование скорости -потока более 4 м/сек, число Re 30000 приводит к интенсивному износу внутренней поверхности труб и  звенной коррозии.When circulating the solution at a speed of less than 3 m / s, the number of Re is less than 20,000 and there is no removal of contaminants from the surface during prolonged treatment for 5-6 hours. Using the speed of the flow of more than 4 m / s, the number of Re 30000 leads to intensive wear of the inner surface of the pipe and corrosion of the shell.

Предмет изобретени Subject invention

Способ химического обезжиривани  металлических поверхностей путем циркул дии обезжиривающего раствора вдоль очищаемой поверхности в турбулентном режиме, отличающийс  тем, что, с целью интенсификации процесса очистки внутренней поверхности трубопроводов, циркул цию осуществл ют в тлрбулентном режиме с числом Рейнольдса Re 0,1 d внутр. (20000- 30000).A method of chemical degreasing metal surfaces by circulating a degreasing solution along the surface to be cleaned in a turbulent mode, characterized in that, in order to intensify the cleaning process of the internal surface of pipelines, the circulation is carried out in a Trifluent mode with a Reynolds number of Re 0.1 d int. (20000-3000).

SU1320123A 1969-04-08 1969-04-08 METHOD OF CHEMICAL DEGREASTING METAL SURFACES SU380754A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1320123A SU380754A1 (en) 1969-04-08 1969-04-08 METHOD OF CHEMICAL DEGREASTING METAL SURFACES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1320123A SU380754A1 (en) 1969-04-08 1969-04-08 METHOD OF CHEMICAL DEGREASTING METAL SURFACES

Publications (1)

Publication Number Publication Date
SU380754A1 true SU380754A1 (en) 1973-05-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU1320123A SU380754A1 (en) 1969-04-08 1969-04-08 METHOD OF CHEMICAL DEGREASTING METAL SURFACES

Country Status (1)

Country Link
SU (1) SU380754A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4781764A (en) * 1986-07-28 1988-11-01 U.S. Philips Corporation Method of removing undesired particles from a surface of a substrate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4781764A (en) * 1986-07-28 1988-11-01 U.S. Philips Corporation Method of removing undesired particles from a surface of a substrate

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