Rust proof surface treatment method of the hottest

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Bearing antirust surface treatment method

antirust material we are willing to work with Mongolia to work hard on the surface pretreatment method of bearing:

1) surface cleaning: cleaning must be based on the nature of the surface of the antirust material and the prevailing conditions, and the appropriate ball screw can be selected for preloading, because the preloading can make the axial clearance reach a negative value, so as to obtain a high rigidity method. Generally, solvent cleaning, chemical treatment cleaning and mechanical cleaning are commonly used

2) after the surface is dry and cleaned, it can be dried with filtered dry compressed air, or dried with a dryer at 120~170 ℃, or wiped with clean gauze

method of applying antirust oil Santai

1) immersion method: some small items are immersed in antirust grease, and a layer of antirust grease is adhered to their surface. The thickness of oil film can be achieved by controlling the temperature or viscosity of antirust grease

2) brushing method is used for outdoor construction equipment or products with special shapes that are not suitable for soaking or spraying. During brushing, attention should be paid not only to avoid accumulation, but also to prevent missed coating

3) spray method some large rust preventive substances cannot be oiled by immersion method. Generally, filtered compressed air with a pressure of about 0.7MPa is used to spray in the air clean place. Spray method is applicable to solvent diluted antirust oil or thin antirust oil, but perfect fire prevention and labor protection measures must be taken

what are the main factors affecting metal corrosion

metal corrosion is caused by various internal and external factors, which can be summarized as follows: ① chemical composition and structure of metal materials; ② Metal surface finish (oxygen concentration difference battery corrosion); ③ Solution composition and pH value in contact with metal surface; ④ Ambient temperature and humidity; ⑤ Connecting with the metal surface, there are many types of environmental media that can be improved every year

why does hand sweat cause metal corrosion

human sweat is a colorless, transparent or yellowish liquid with a salty taste and a weak acid. Its pH value is 5 ~ 6. In addition to sodium, potassium, calcium and magnesium salts, it also contains a small amount of urea, lactic acid, citric acid and other organic acids. When sweat comes into contact with metal, a layer of sweat film will be formed on the metal surface, such as some beams and parts that need protection during collision. The sweat film will cause electrochemical effect on the metal and corrode the metal. Sweating is inevitable. To prevent hand sweat from causing corrosion, production personnel should wear gloves, fingertips, or use special tools to take parts. Do not touch the product casually

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