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Bearing anti-rust method want to know? Points to open to see. 。 。
by:Waxing
2020-11-17
1)
Surface cleaning: cleaning must be in accordance with the nature of the antirust surfaces and conditions of the time, select the appropriate method.
Ordinary common solvent cleaning method, chemical disposal of cleaning and mechanical cleaning.
2)
Surface clean filter available after tightening monotonically air blow dry, or in 120 ~ 170 ℃ of monotonous to suspend the drab, also can use clean cloth to wipe dry.
The method of coating anticorrosive oil: 1)
Soak 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 after antirust grease or viscosity to arrive.
2)
Brush method used for outdoor construction equipment shall not apply to the soaking or spraying or special shape of products, brush when should pay attention to not build up already, also want to pay attention to prevent leakage.
3)
Spray a few large rust cannot be oiled by soaking method, ordinary about 0.
7 mpa pressure filtration squeeze the air in the middle of the clean air suspension spray.
Spray method used solvent XiShiXing rust-proof oil or thin layer of anti-rust oil, but must use perfect fire prevention and labor safeguard measures.
What are the main factors affecting the bearing corrosion?
Bearing corrosion are composed of internal and external factors, provoked by the aggregate, mainly include: (1) bearing material chemical composition and structure;
(2) bearing surface brightness (
The oxygen concentration cell corrosion)
;
(3) contact with the bearing surface composition and pH value of solution;
(4) environmental temperature and humidity;
(5) various environmental media and bearing surface in contact.
Why would hand sweat provoked bearing rust?
Sweat is a colorless transparent or light yellow with salty in weak acid liquid, its pH value of 5 ~ 6.
In addition to containing sodium, potassium, calcium, magnesium salt, also contains a small amount of urea, lactic acid, citric acid and other organic acids.
When sweat in contact with the bearing in the bearing surface form a film of sweat, sweat membrane will be provoked electrochemical action of bearing, bearing of corrosion.
Sweating is inevitable, to prevent hand sweat provoking corrosion, consumption personnel should wear gloves, gloves, or take the parts with specialized tools, don't touch products by hand.
Bearing rust what method?
Rust prevention measures, the most common is the dress of iron on the surface of iron coated with paint or plating on other bearing is not easy to rust.
For example, car, clad in glittering spray paint;
On the heating pipe coated with aluminum paint;
Do tin cans with the tin plating layer;
The roof of the surface of the tin town with a layer of zinc;
Your tap water bolt with a layer of chromium or nickel plating.
A more thorough way, iron injection in the arm to participate in other bearings, stainless alloy.
The well-known stainless steel, is to participate in a bit of nickel in steel and made of aluminum and alloys.
Rust prevention should be adopted for the cause of the bearing corrosion of appropriate methods.
The commonly used methods are: [
Change bearing internal organization structure]
Such as manufacturing all kinds of corrosion resistance of the alloy, such as in ordinary steel in chromium, nickel, etc. Made of stainless steel.
(
Maintenance method of layer]
In the bearing surface layer mask maintenance, isolate bearing products with the corrosive medium, to prevent corrosion.
In the steel surface coated with oil, vaseline, paint or enamel cover, the corrosion resistance of the bearing material such as plastic.
Use methods such as electroplating, hot dip, spray plating, on the steel surface plating layer is not easy to corrode the bearings, such as zinc, tin, chromium, nickel, etc.
These high temperature bearing tend to form a layer of dense oxide by oxidation film, so as to prevent water and air on the corrosion of steel.
Steel surface with chemical method to generate a layer of fine stable oxide film.
Such as machine parts, such as gun steel surface form a layer of fine black ferroferric oxide film, etc.
The previous: type high temperature bearing vibration damage of several major cause of the next article: ask bearing necessary elementary school
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