管路清洗
Pipeline cleaning
为确保润滑系统的清净，并供给机械设备轴承以洁净的润滑脂，必须将预安装后的管路拆下清洗。清洗有煤油清洗和酸洗两种。
In order to ensure the cleanliness of the lubrication system and provide clean grease for bearings of mechanical equipment, the pre-installed pipelines must be removed and cleaned. There are kerosene cleaning and acid cleaning.
（一）煤油清洗对象及方法
(1) Kerosene cleaning objects and methods
对象。铜管、不锈钢管；
Object. Copper pipe and stainless steel pipe;
方法。1、预安装前已经过酸洗处理，且现在内壁无锈蚀、氧化铁皮的钢管；
Method. 1. Pipes that have been pickled before Pre-installation and are now free of rust and iron oxide scales on their inner walls;
2、在预装时弄脏的管接头；
2. Pipe fittings dirty at pre-assembly;
3、将需要清洗的管子及接头拆下，管子用布（要不掉毛纱）沾煤油把管内擦净，两端及接头浸泡在煤油中清洗，然后管内涂机油或充填满润滑脂，两端密闭好待装；
3. Remove the pipes and joints that need to be cleaned, wipe the pipes with cloth (not to remove wool yarn) and kerosene, soak the ends and joints in kerosene and clean them, then coat the pipes with oil or fill them with grease, and close the ends for installation.
4、清洗后不得有目测可见的污染物（如铁屑、纤维状杂质、焊渣等），要特别注意焊接处的内壁焊渣必须彻底清洗干净。
4. No visible contaminants (such as iron scraps, fibrous impurities, welding slag, etc.) should be observed after cleaning. Special attention should be paid to the thorough cleaning of welding slag on the inner wall of the welded joint.