Bearing antirust surface preparation methods and induced Rust reasons

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Bearing antirust surface preparation methods:
1) Surface cleaning: cleaning must be according to the nature of the surface to be rust-proof and the conditions, selected the appropriate method. Commonly used solvent cleaning

method, chemical proces sing, cleaning and mechanical cleaning method.double row bearing

2) the surface is dry and clean filter available dry compressed air, or 120 ~ 170 ℃ dryer drying can also be used to clean gauze dry.NTN bearig

Coated with rust preventive oil

1) soak method: some small items soaked in anti-rust grease, let a layer of anti-rust oil on the surface adhesion. Film thickness can be achieved by controlling the temperature

or viscosity of the antirust oil precision bearings

2) brushing method used for outdoor construction equipment, or special shapes NA immersion or spraying of products, we should pay attention to the brush does not produce

accumulation and pay attention to prevent leakage Tu.

3) spra y the rust-proof material can not be used immersion coated with oil, usually with about 0.7Mpa pressure filtration of compressed air to spray the air clean place. The

spray application of diluted anti-rust oil or thin layer of anti-rust oil, but must be used to improve fire safety and labor protection measures.

What are the main factors that affect metal corrosion

Metal corrosion is caused by a variety of intrinsic and extrinsic factors, summarized in:

â'  metal materials, chemical composition and structure;

2 of metal surface finish (the difference of oxygen concentration cell corrosion);

â'¢ contact with the metal surface, the solution composition and pH;

(4) ambient temperature and humidity;

â'¤ with the metal surface in contact with the various environmental media.

Why hand sweat can cause metal corrosion

Human sweat is a clear, colorless or pale yellow with a s alty taste was mildly acidic liquid, its pH value of 5 to 6. In addition to containing sodium, potassium, calcium,

magnesium, it also contains a small amount of urea, lactic acid, citric acid. Sweat, contact with the metal to form a layer of sweat film on the metal surface metal of sweat

film will cause electrochemical reaction and corrosion of metal.

Sweating is inevitable to prevent the hand sweat corrosion caused by the production staff should wear gloves, gloves, pick up parts or special tools, applications. They Do not

hand contact with the product.