Bearing rust and rust method, a major factor of metal corrosion
Bearing rust method
Surface preparation methods are rust-proof material:
1) Surface cleaning: cleaning must be in accordance with the nature of the surface of rust-proof and the prevailing conditions, the appropriate method is selected. Commonly used solvent cleaning, chemical treatment and mechanical cleaning method cleaning method.
2) After cleaning the surface is dry and clean dry compressed air filter available, or use the dryer 120 ~ 170 ℃ was dried, it can also be wiped clean gauze.
Coated with anti-rust oil Method:
1) soak method: use some small items soaked in anti-rust oil, allowed the upper surface of a layer of anti-rust oil coating method. Film thickness can be achieved by controlling the temperature or viscosity anti-rust oil.
2) Brush method for NA immersion or spray outdoor construction equipment or special shape products, it is necessary to pay attention to when brushing does not produce accumulation, but also pay attention to prevent leakage Tu.
3) anti-rust spray some large object can not be used immersion oiled, generally about 0.7Mpa pressure filtered compressed air spray in the air cleaner place. Spray application of solvent dilution type rust oil or thin antirust oil, but must be used to improve fire safety and labor protection measures.
The main factors affecting the metal corrosion have?
Metal corrosion is caused by a variety of internal and external factors caused, summarized in:
① own chemical composition and structure of metal materials;
② metal surface finish (oxygen concentration cell corrosion);
Solution composition and pH value ③ in contact with the metal surface;
④ ambient temperature and humidity;
⑤ in contact with the metal surface of various environmental media.
Why hand sweat can cause metal corrosion?
Human sweat is a colorless or yellowish transparent salty weakly acidic liquid, its pH value of 5 to 6. In addition to containing sodium, potassium, calcium, magnesium, but also contains a small amount of urea, lactic acid, citric acid. When the sweat contact with the metal, will sweat membrane layer on the metal surface, sweat membrane electrochemical action would cause metal corrosion of metal. People sweating is inevitable, to prevent corrosion caused by hands sweat, production personnel should wear gloves, finger, or pick up parts with a special tool, you should not touch the product.
The main factors affecting the metal corrosion have?
Metal corrosion is caused by a variety of internal and external factors caused, summarized in: ① their chemical composition and structure of metal materials; ③ contact with the metal surface of the solution; ② metal surface finish (oxygen concentration cell corrosion) composition and pH value; ④ ambient temperature and humidity; ⑤ in contact with the metal surface of various environmental media.
Why hand sweat can cause metal corrosion?
Human sweat is a colorless or yellowish transparent salty weakly acidic liquid, its pH value of 5 to 6. In addition to containing sodium, potassium, calcium, magnesium, but also contains a small amount of urea, lactic acid, citric acid. When the sweat contact with the metal, will sweat membrane layer on the metal surface, sweat membrane electrochemical action would cause metal corrosion of metal.
People sweating is inevitable, to prevent corrosion caused by hands sweat, production personnel should wear gloves, finger, or pick up parts with a special tool, you should not touch the product.
