Cleaning and rustproofing manner

摘要

P To provide a cleaning and rust-proof treatment method for removing rust swollen ON the surface of an illuminating lamp or the like and performing rust-proof treatment or the like while traveling. PSOLUTION: The cleaning and rust-proof treatment method uses a high-pressure cleaning apparatus comprising: a high-pressure pump 1 which pressurizes feed water to a prescribed pressure; a water heater 2 which heats the feed water; a jet nozzle device 4 which is connected to the high-pressure pump 1 and the water heater 2 through connection paths 8, 9 and 10 and jets high-pressure hot water; a storage tank 4 for granular sodium bicarbonate; and a sodium bicarbonate feed path 11 which has the distal end connected to the tank 4, and the top end connected to the jet nozzle 5a and mixes the granular sodium bicarbonate into a jet stream. The high-pressure hot water which contains granular sodium bicarbonate and is in a state of causing cavitation ON the inside is jetted from the tip of the jet nozzle 5a to a metallic object to be treated and, thereby, a swollen part of rust developed ON the surface is cleaned and removed and, after the removal and a coating film with passivity is formed. PCOPYRIGHT: (C)2010 and JPO& INPIT