Cangzhou Hengtai Zeyuan Anti-corrosion Pipeline Co., Ltd.
What are the anti-corrosion technologies of anti-corrosion pipelines?
The pipeline is widely used in production and life, in order to increase the service life of the pipeline and improve the use efficiency, we must pay attention to the maintenance of the pipeline, especially anti-corrosion.
Sep 29,2024
The pipeline is widely used in production and life, in order to increase the service life of the pipeline and improve the use efficiency, we must pay attention to the maintenance of the pipeline, especially anti-corrosion. Some production and life have chosen anti-corrosion pipeline, then the anti-corrosion technology of anti-corrosion pipeline can generally be considered from two aspects, physical methods and chemical methods.
The physical method is the coating anticorrosion, that is, the coating is evenly and densely coated on the pipeline to prevent the pipeline from contacting with some media, resulting in corrosion, which is a common and the simplest method. The anti-corrosion material should be applied not only to the outer wall, but also to the inner wall. A film applied to the inner wall of a pipe to prevent corrosion, reduce friction resistance, and increase throughput. Commonly used coatings are amine cured epoxy resin and polyamide epoxy resin, coating thickness of 0.038 ~ 0.2 mm. In order to ensure that the coating is firmly bonded to the pipe wall, the surface treatment of the inner wall of the pipe must be carried out. Since the 1970s, the same material has been used for the coating of the inner tube and outer wall, so that the coating of the inner tube and outer wall can be performed at the same time.
Chemical method is electrical protection, that is, changing the electrode potential of the metal relative to the surrounding medium, so that the metal is protected from corrosion. There are two methods: cathodic protection and corrosion prevention. Cathodic protection is the method of polarizing the protected metal into a cathode to prevent metal corrosion. Prevention of electrical corrosion: first, measures are taken on the facilities related to the stray current source to reduce the leakage current to the minimum; The second is to avoid the stray current area as far as possible when laying the pipeline, or improve the quality of the insulation anti-corrosion layer of the interfered pipe section, using shielding, adding insulation flanges and other measures; The third is to discharge the interference pipeline, that is, to discharge the stray current from the interference pipeline back to the power grid that generates the leakage current, in order to eliminate the corrosion of the stray current to the pipeline.
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Hebei Hengtai Group, 338 National Road North, Zhenggang Industrial Park, Yanshan County, Cangzhou City, Hebei Province
Hebei Hengtai Group, 338 National Road North, Zhenggang Industrial Park, Yanshan County, Cangzhou City, Hebei Province
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