Lubricating oil knowledge, lubricating oil lubrication methods

There are nine lubrication methods for lubricating oil: (1) manual lubrication (2) drip lubrication (3) splash lubrication (4) oil ring and oil chain lubrication (5) oil rope and oil pad lubrication (6) self-lubrication (7) oil mist lubrication (8) centralized lubrication (9) pressure circulation lubrication, etc.

The common lubrication methods are as follows: 1, manual lubrication, 2, oil immersion lubrication, 3, drip oil lubrication, 4, splash lubrication, 5, oil rope lubrication, oil mist lubrication 7, and centralized lubrication.

2. Drip oil lubrication is mainly drip oil cup lubrication.

3. Splash lubrication uses high-speed rotating parts or additional oil throwing discs.

1. The color of the oil can often reflect its degree of refinement and stability. For base oils, the higher the degree of refining, the cleaner the oxides and sulfides of the hydrocarbons are removed, and the lighter the color. However, even if the refining conditions are the same, the color and transparency of base oils produced by different oil sources and base genres** may be different.

For new finished belts or lubricants, due to the use of additives, color has lost its original significance as an indicator of the degree of refinement of the base oil.

2. Density is the simplest and most commonly used physical performance index of lubricating oil. The density of lubricating oil increases with the increase of the amount of carbon, oxygen and sulfur in its composition, so that under the same viscosity or the same relative molecular weight, the density of lubricating oil containing more aromatic hydrocarbons, the density of lubricating oil containing more gum and asphaltene is the largest, the one containing more naphthenes is in the middle, and the one containing more alkanes is the smallest.

3. Viscosity reflects the internal friction of the oil, and is an indicator of the oiliness and fluidity of the oil. Under the premise of not adding any functional additives, the greater the viscosity, the higher the strength of the oil film and the worse the fluidity.

4. The viscosity index indicates the degree to which the viscosity of the oil changes with temperature. The higher the viscosity index, the less affected the oil viscosity is by temperature, and the better its viscosity and temperature performance, and vice versa.

5. Flash point is an index that indicates the evaporation of oil. The lighter the fraction of the oil, the greater the evaporation, and the lower its flash point. Conversely, the heavier the fraction of the oil, the less evaporative it is, and the higher its flash point.

At the same time, the flash point is an indicator of the risk of fire in petroleum products. The danger level of oil is divided according to the flash point, the flash point below 45 is flammable, and above 45 is combustible, and it is strictly forbidden to heat the oil to its flash point temperature during the storage and transportation of oil. With the same viscosity, the higher the flash point, the better.

Therefore, the user should choose the lubricating oil according to the temperature and working conditions of the lubricating oil. It is generally believed that the flash point is 20 30 times higher than the operating temperature, which is safe to use.

1. What is lubrication? What is the role of lubricating oil?

Lubrication: It is to add lubricant between the two contact surfaces of relative motion, so that a lubricating film is formed between the two friction surfaces, the surface in direct contact is separated, and the friction is dried for the internal friction between the lubricant molecules, so as to reduce friction, reduce wear, and prolong the service life of mechanical equipment, which is called lubrication.

The function of lubricating oil is as follows: 1. Reduce friction: adding lubricant to the friction surface can reduce the friction coefficient, thereby reducing the friction resistance and saving energy consumption.

2. Reduce wear: The lubricant can reduce the wear caused by abrasive wear, surface fatigue and adhesive wear between the friction surfaces. 3. Cooling effect:

Lubricants absorb heat, transfer heat and dissipate heat, thus reducing temperature rises caused by frictional heat. 4. Anti-rust effect: the presence of lubricant on the friction surface can prevent rust caused by air, water droplets, water vapor, corrosive gases and liquids, dust and oxides.

5. Power transmission: In many cases, lubricants have the function of power transmission, such as hydraulic transmission. 6. Sealing function:

The lubricant seals certain exposed parts and prevents the ingress of moisture impurities. 7. Shock absorption: When subjected to impact load, it can absorb impact energy, such as automobile shock absorber.

8. Cleaning effect: impurities can be taken away through the circulation of lubricating oil and filtered out by the filter.

What are the main components of lubricating oil?

At present, all finished lubricants are composed of base oils and additives, of which base oils account for more than 70% to nearly 100%. Additives account for a few parts per million to one percent.

Thirty, forty. There are two types of base oils: mineral oil type and synthetic type, and the vast majority of them are mineral oil types. China's mineral oil base oil is divided into eight categories according to the latest standards, namely very high viscosity index base oil (VHVI, 120 VI 140), high viscosity index base oil (HVI, 90 VI 120), medium viscosity index base oil (MVI, 40 VI 120) and low viscosity index base oil (LVI, VI 40), high viscosity index low condensation base oil (HVIW), medium viscosity index low condensate base oil (MVIW), high viscosity index deep refined base oil (HVIS), Medium viscosity index refined base oil (MVIS).

Each is divided into several grades according to viscosity, a total of 63 kinds. There are many varieties of additives, the main types are cleaning and dispersing agents, antioxidant and antiseptic agents, anti-wear agents, oily agents, antioxidants, viscosity index improvers, rust inhibitors, pour point depressants, antifoam agents, etc.

It can't be used, the additives in it are different, and the screw air compressor oil is an industrial oil, and the scope of application is different. You go to Air France lubricants, they have both motor oil and screw compressor oil. However, if you are not afraid of damaging the engine, you can still use it.

Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and machinery and equipment to reduce friction and protect machinery and processed parts, which is generally composed of two parts: base oil and additives.

Lubricant is a technology-intensive product, a complex mixture of hydrocarbons that lubricates, cools, prevents rust, cleanses, seals and buffers.

1. Moderate dosage.

Most of the transmission components such as transmissions, reducers, and steering gears of motor vehicles are oil-immersed. If the lubricating oil filling exceeds the specified limit, the stirring resistance of the gear during operation will increase, which will cause power loss and increase fuel consumption. Therefore, the amount of lubricating oil must be filled in moderation.

In addition, some people stuff the inner cavity of the wheel with grease when maintaining and repairing the wheel hub bearing of the motor vehicle, thinking that the more grease, the better. In fact, adding too much grease to the wheel hub will have many adverse consequences, one is to increase the running resistance of the bearing;The second is to affect the heat dissipation of the bearing;Third, the grease melted due to high temperature may penetrate into the brake drum and cause motor vehicle brake failure. Therefore, "hollow hub lubrication" should be implemented, that is, only grease needs to be applied on the bearing, and there is no need to stuff grease in the cavity, which can not only ensure the lubrication effect, but also save 5 grease.

2. Control the viscosity.

In fact, high-viscosity lubricants can increase mechanical friction losses. Especially at start-up, because the oil has poor fluidity at low temperatures, the frictional resistance is large, which increases the power loss and increases the fuel consumption. If a lower viscosity lubricant is used, the friction consumption inside the oil can be reduced without increasing the wear of the parts.

According to the test, the viscosity of the engine oil is reduced by one level, and the fuel saving rate of the engine is 1%-3%. Therefore, lubricating oil with lower viscosity should be used on the premise of ensuring lubrication.

3. The price should be considered.

Some drivers want to save money, often only see the price of oil and immediate maintenance expenses, and ignore the increased repair costs in the future. When choosing a lubricating oil, the quality grade of the lubricant should be selected according to the speed, the size of the load, and the type of gear transmission. The performance indicators of high-grade lubricating oil are superior, so it can significantly extend the service life of the machine and the oil change interval, and reduce the maintenance cost.

Especially when a motor vehicle is fully loaded for a long time and works in poor road conditions, it is best to use a lubricant quality grade that is one grade higher than that specified in the manual.

The use of lubricating oil is mostly divided into industrial lubricating oil and medical lubricating oil, if it is an industrial lubricating oil, it is generally used in various machines, which are generally liquid. Pour directly over the place where lubrication is needed, and pour an appropriate amount on it. If it is a life in which lubricating oil is divided into paste and liquid.

Apply the paste a little by hand and apply it to the area where it needs to be lubricated. If it is liquid, it can be used by sticking it with a cotton swab.

Can you ask in detail, because you don't explain what kind of lubricating oil, it is difficult to help you, do you ask about the lubricating oil of the car or what, there are a lot of lubricating oil, I don't know what kind of lubricating oil you are asking, you can explain, so that you can help solve the problem of lubricating oil.