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Analysis of several methods for bearing rust prevention
Source: China Bearing Network Time: 2014-01-07
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1) Appearance hygiene: It is necessary to remove the appearance of the appearance of the rust preventive material and the conditions at the time; select the appropriate method. Commonly used are solvent removal method, chemical treatment health method and mechanical hygiene method.
2) The surface is dry and cleaned and can be dried by filtered dry compressed air; perhaps dried with a drier of 120~170 °C; it can also be dried with a clean gauze.
Method of applying anti-rust oil
1) Soaking method: some small items should be soaked in anti-rust grease; let the outer surface adhere to a layer of anti-rust grease. The thickness of the oil film can be reached by controlling the temperature or viscosity of the anti-rust grease.
2) Brushing method is used for outdoor construction equipment or special shape products that are not suitable for soaking or spraying; when painting, it is necessary to pay attention not to accumulate; it is also necessary to avoid leakage coating.
3) Spray method Some large-scale rust-proof materials can not be immersed in oil; usually, the compressed air is sprayed at a pressure of about 0.77 MPa in the air. The spray method is suitable for solvent-diluted rust-proof oil or thin-layer rust-proof oil; However, it is necessary to choose a comprehensive fire prevention and labor protection method.
What are the main factors affecting metal corrosion?
Metal corrosion is caused by various connotations and external factors; the main ones are:
1The chemical composition and layout of the metal material itself,
2 metal appearance finish (oxygen concentration difference battery corrosion),
3 with the composition of the metal touch and the pH value,
4 ambient temperature and humidity,
5 various environmental media touched by the metal appearance.
Why does hand sweat cause metal corrosion?
Human sweat is a colorless, bright or light yellow liquid with a salty taste and weak acidity; its pH is 5-6. In addition to being rich in sodium, potassium, calcium and magnesium salts; it is also rich in a small amount of urea. Organic acids such as lactic acid and citric acid. When sweat and metal touch; it will form a layer of sweat film on the metal surface; the sweat film will cause electrochemical effects on the metal; corrosion metal.
People sweating is inevitable; to avoid rust caused by sweat; production personnel should wear gloves, finger cots; or take special parts with tools; do not touch the product with your hands.
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