Before the installation of the cold storage, the refrigeration pipe must be thoroughly cleaned. The rust and dirt on the inner wall and outer wall of the pipe must be removed, and the inner wall should be kept dry. After the outer wall of the pipe is decontaminated and rust removed, it should be brushed immediately to prevent rust. paint. There are many decontamination methods for pipelines, and we mainly recommend the following. ①Before the installation of the cold storage, carry out manual decontamination, use a wire brush to reciprocate the inside of the pipeline, until the dirt and rust in the pipeline are removed, then dry it with a clean white cloth, and then blow it with dry compressed air To the nozzle, it is not qualified until the ejected air is free of dirt on the white paper. most
Before the installation of the cold storage, the refrigeration pipes must be thoroughly cleaned. The rust and dirt on the inner and outer walls of the pipes should be removed, and the inner walls should be kept dry. After the outer walls of the pipes are decontaminated and rust removed, they should be brushed to prevent rust. paint. There are many decontamination methods for pipelines, and we mainly recommend the following. ①Before the installation of the cold storage, carry out manual decontamination, use a wire brush to reciprocate the inside of the pipeline until the dirt and rust in the pipeline are removed, then dry it with a clean white cloth, and then blow it with dry compressed air To the nozzle, it is not qualified until the ejected air is free of dirt on the white paper. Finally, proper moisture-proof measures must be taken, and the pipelines must be sealed and used until the cold storage is installed. However, this method is labor-intensive, inefficient, and has poor cleaning quality. ②Dipping and decontamination method: For small-diameter pipes, elbows or elbows installed in cold storage, a clean white cloth can be soaked in carbon tetrachloride to wipe the inner wall of the pipe clean. For large-diameter pipes, it can be poured into The carbon tetrachloride solution is decontaminated. After 15 to 20 minutes, release one end of the pipe, pour out the carbon tetrachloride solution, and then use the above method to wipe the pipe clean and dry it. Save for backup. ③Use sand blasting and decontamination method for the refrigeration pipes installed in the cold storage: use compressed air of 0.4~0.6MPa to spray sand with a particle size of 0.5~2.0mm on the metal surface with rust, and make the metal surface clean by the blow of the sand. The dirt is removed, revealing the textured luster of the metal. The metal surface decontaminated by this method will become rough and uniform, so that the paint can be well combined with the metal surface, and the rust in the recesses of the metal surface can be cleaned. A decontamination method. There are mainly the above-mentioned ways to remove the refrigeration pipes installed in the cold storage. The construction personnel can choose the decontamination method according to the conditions of the site, so as to avoid the situation of the refrigeration pipes during the installation of the cold storage.
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