Be rust surface pretreatment method
(1) surface cleaning: cleaning must be in accordance with the nature of the antirust surfaces and the conditions, select the appropriate method. There are usually used solvent cleaning, chemical cleaning and mechanical cleaning.
(2) the surface available filter after dry clean dry compressed air blow dry, or in 120 ~ 170 ℃ dryer for drying, also can use clean cloth to wipe dry.
The method of coating anticorrosive oil:
(1) soaking method: some small items by soaking in antirust oil, make its surface adhesion on a layer of anti-rust oil. The temperature of the oil film thickness can be controlled by anti-rust oil or viscosity to achieve.
(2) brush method used for soaking or spraying outdoor construction equipment or not apply special shaped products, brush should not only pay attention to not build up, also should pay attention to prevent leakage.
(3) spray some big rust cannot be oiled by soaking method, approximately 0.7 Mpa pressure filter is commonly used in compressed air for spraying in clean air. Spray method used solvent XiShiXing rust-proof oil or thin layer of anti-rust oil, but must use perfect fire protection and labor protection measures.
What are the main factors influencing the metal corrosion?
Metal corrosion is caused by a variety of internal and external factors, induces mainly has:
1) metal material chemical composition and structure of itself;
(2) metal surface finish (oxygen concentration cell corrosion);
(3) contact with the metal surface composition and pH value of solution;
(4) environmental temperature and humidity;
(5) the various environmental medium metal surfaces in contact with.