Molybdenum greases: characteristics, application, reviews

Molybdenum greases are considered the most demanded elements used in various mechanisms and assemblies. Due to the physico-chemical properties of molybdenum disulphide, they protect parts from excessive wear, early aging and metal fatigue and protect friction surfaces under severe thermal and mechanical stresses.

A component is extracted in the form of ore with a sulfur compound. In the future, it is cleaned, as a result of which it is converted into dark-colored crystals, which, interacting with the metal, leave a trace of a gray shade with a green tint. Lubricants based on molybdenum disulphide are famous for their adhesion to the metal surfaces of the mechanisms. In simple terms, the surface, subject to friction and direct mechanical action, is protected by a microscopic layer of lubricant, which, in turn, protects the part from the formation of physical damage, and also helps to reduce the temperature in the area of friction.

Characteristics

The molybdenum-based lubricant has several advantages over other types. The main advantages include stable operation under conditions of extreme extreme loads. Also, it does not lose its qualities with a critical decrease and increase in temperature, has an anti-corrosion property, helps prevent wear and mechanical damage. Regardless of aggressive conditions, the machine provides a long lubrication moment. Molybdenum greases, unlike graphite materials, have significantly higher antifriction properties, have a greater reducing ability. Can be produced in the form of aerosols, greases and oils. Applied in various engineering industries. Namely, in the auto industry, machine-tool construction, to extend the life of complex industrial machinery.

Material Action

Because of their molecular structure, molybdenum lubricants perform excellent protective functions, without interfering with the operation of the main lubricant. Molybdenum disulfide includes one molybdenum atom and a pair of sulfur atoms, the interaction of which with the metal surface reliably fixes the disulfide to the surfaces. The characteristic effect of molybdenum is the formation of a viscous layer of lubricant, the thickness of which is 5 microns, which in turn equals one and a half thousand antifriction coatings. At the moment of friction of metals, the particles of the material move directly between themselves, thus preventing direct contact of the surfaces of the parts, and, accordingly, reducing wear and overheating.

Plastic materials based on molybdenum

The best characteristics of molybdenum are when combined with other components. For example, lithium-molybdenum grease has enhanced protective properties and is able to additionally protect the elements of mechanisms from impact loads. The use of these types of greases greatly increases the strength of the surfaces of the parts. They are widely used in the processing of bearings, gear mechanisms, to provide lubrication of various types of reducers.

Lubricants for throttle valves

Throttle valve is designed to adjust the supply of fuel mixture in the engine cylinders, by changing the cross-section of the passageway. At the time of opening the damper, the pressure in the inlet system is equal to the atmospheric pressure, but when the damper is closed, the pressure is reduced until the discharge is formed. A throttle is located between the suction manifold and the air filter.

During operation, the damper is clogged, and deposits from the combustion products of the fuel form on it. In addition, this regulating mechanism is mechanically damaged during long-term operation. The axial play of the so-called valve facilitates the formation of small grooves in the body of the passageway, resulting in a leaner fuel mixture. Subsequently, the stable operation of the motor changes, especially at idle speed. To increase the wear resistance of this mechanism and reduce the degree of damage, molybdenum grease for the throttle valve is used.

One of these types of products can be classified as Molykote trademark. This antifriction material is applied to the surface of the shutter by means of special technological operations.

The positive side of the application

Advantages of lubricant application: friction between the contacting parts is reduced, tightness is increased, the damper is prevented from jamming, the throttle mechanism is smoothly running, corrosion protection is provided . In addition, molybdenum lubricants for the throttle for a long time retain their positive properties and are resistant to various aggressive environments. Motorists note that the use of this composition has a favorable effect on the operation of the throttle and significantly extends the life of the throttle.

Grease Hi-Gear HG5531-312

Used as a method for processing a variety of mechanisms that are exposed to high temperatures and shock loads. The composition of the drug includes molybdenum finely dispersed and components with a high threshold of resistance to high temperatures and pressure. The maximum pressure threshold is 7000 atmospheres, and the maximum temperature threshold is +250 degrees.

Sulphide molybdenum grease of this brand has a fairly wide range of applications:

• Chains and asterisks.
• Joints and mechanisms.
• Gear mechanisms of open and closed types.
• Pulleys and cables.
• Shafts.
• Plain and rolling bearings.
• Locks and latches.
• Coupling devices.

Grease has a high resistance to aggressive conditions. Works well in high humidity, resistant to direct water. Protects the surface from the formation of oxides and rust. It is resistant to acids and salts. In parallel, it is used as a molybdenum grease for TPA in an aerosol, since it does not damage the structure of plastic and rubber products.

Mode of application

In use, the preparation is fairly simple - it is enough to read the instructions and start to process a particular part. Initially, the can should be shaken. Then abundantly apply lubricant to the part and allow it to dry out a little. Then the mechanism or a separate element can be included in the work. According to the reviews, it is not recommended to lubricate the nodes with a large amount of material, since when heated, it brightens and can penetrate through the glands outside.

MolyWay Li 732 grease for bearings

This product is designed for lubrication of bearings of sliding and rolling, as well as use in heavy manufacturing industries. The composition includes molybdenum disulphide. Molybdenum grease for bearings is made of high viscosity oils and lithium soap. In addition, it has additives that help to prevent the formation of corrosion and oxides, increased wear and adhesion. Due to the 3% molybdenum content of the preparation, it has anti-shock protective properties.

Lubrication molybdenum: application

Given the numerous reviews, it can be used not only for bearings, but also for other auto assemblies. So, it can be used as a lubricant for the CV joints. It is used as an alternative to graphite. It showed itself well enough when used as a basic lubricant for axes of wheel hubs, tips and rods, ball bearings. Can also be used to lubricate door hinges and locks. The temperature threshold of application is from minus forty to plus one hundred and twenty degrees.

The application of this tool significantly extends the service life of the elements of the mechanisms of vehicles and industrial equipment, and also contributes to the normal lapping of new parts.

Advantages of MolyWay

High resistance to oxidation and mechanical attack, excellent resistance to corrosion, ability to withstand significant force and impact loads, good adhesion reduces the likelihood of frequent application of lubricant.

Looking at the variety of lubricants with the use of molybdenum disulfide, it's hard to figure out which one to choose. Therefore, it is first necessary to determine for what purpose it is necessary. There are several types of this drug that can be designed only for a specific use, as well as universal lubricants. In addition, attention should be paid to the shape of the outlet, since many parts that need to be processed can be in hard-to-reach places, so the lubrication process should not be too burdensome. It is not recommended to purchase products of doubtful origin, because this can lead to costly repairs.

So, we found out what molybdenum greases are.