Molybdenum lubricants: characteristics, applications, reviews

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

Molybdenum lubricants are considered the most popular elements used in various mechanisms and assemblies. Due to the physical and chemical properties of molybdenum disulfide, they protect parts from excessive wear, early aging and metal fatigue and protect friction surfaces under strong thermal and mechanical loads.

The component is mined in the form of an ore with a sulfur compound. Subsequently, it is purified, as a result of which it is converted into dark-colored crystals, which, interacting with the metal, leave a trace of a gray tint with a green tint. Lubricants based on molybdenum disulphide are famous for their adhesion to metal surfaces of mechanisms. In simple terms, a surface subject to friction and direct mechanical stress 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.

Features

Molybdenum-based grease has a number of advantages over other types.

The main advantages include stable operation under high extreme loads. Also, it does not lose its qualities with a critical decrease and increase in temperature, has an anti-corrosion property, and helps prevent wear and mechanical damage. Regardless of aggressive conditions, it provides the mechanism with a long lubrication moment. Molybdenum lubricants, in contrast to graphite materials, have significantly higher antifriction properties and have a greater recovery ability. They can be produced in the form of aerosols, greases and oils. They are used in various engineering industries. Namely, in the automotive industry, machine tool building, to increase the service life of complex industrial mechanisms.

Material action

Due to their molecular structure, molybdenum greases perform excellent protective functions, while not interfering with the work of the main lubricant. Molybdenum disulfide includes one molybdenum atom and a couple of sulfur atoms, the interaction of which with the metal surface securely attaches the disulfide to the surfaces. The characteristic action of molybdenum is the formation of a viscous lubricant layer, the thickness of which is 5 microns, which, in turn, is equal to one and a half thousand anti-friction coatings. At the moment of friction of metals, the particles of the material move directly between themselves, which prevents direct contact of the surfaces of the parts, and, accordingly, reduces wear and overheating.

Molybdenum plastic materials

Molybdenum's characteristics work best 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 shock loads. The use of these types of lubricants greatly increases the degree of surface hardness of parts.

They are widely used in the processing of bearings, gear mechanisms, to provide lubrication for various types of gearboxes.

Throttle Lubricants

The throttle valve is designed to regulate the supply of the fuel mixture to the engine cylinders by changing the cross section of the passage channel. At the moment the damper opens, the pressure in the intake system is equal to atmospheric, but when the damper is closed, the pressure decreases until a vacuum is formed. A throttle valve is placed between the intake manifold and the air filter.

During operation, the damper becomes clogged, deposits from fuel combustion products form on it.

Additionally, this regulating mechanism receives mechanical damage during long-term operation. The axial play of the so-called valve contributes to the formation of small grooves in the body of the passage channel, as a result of which the fuel mixture enters more depleted. Subsequently, the stable operation of the motor changes, especially at idle. To increase wear resistancemolybdenum grease for the throttle valve is used to reduce damage.

One of these types can be attributed to the products of the brand Molykote. This anti-friction material is applied to the damper surface by special technological operations.

The positive side of the application

Pros of using lubrication: friction between contacting parts is reduced, tightness is increased, wedging of the damper is prevented, smooth movement of the throttle mechanism, anti-corrosion protection is provided.

In addition, molybdenum throttle lubricants retain their positive properties for a long time and are resistant to various aggressive environments. Motorists note that the use of this composition has a positive effect on the operation of the throttle and significantly extends its life.

Hi-Gear HG5531-312

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

Molybdenum sulfide grease of this brand has a fairly wide range of applications:

• Chains and sprockets.
• Swivel joints and mechanisms.
• Gear mechanisms of open and closed types.
• Pulleys andcables.
• Shafts.
• Sliding and rolling bearings.
• Locks and latches.
• Hitches.

Grease has high resistance to aggressive conditions. Works great in high humidity conditions, resistant to direct exposure to water. Protects surfaces from the formation of oxides and rust. It is resistant to acids and s alts. In parallel, it is used as a molybdenum lubricant for injection molding machines in an aerosol, as it does not damage the structure of plastic and rubber products.

How to use

In use, the drug is quite simple - just read the instructions and start processing one or another part. Shake the bottle first. Then generously apply lubricant to the part and let it dry a little.

After that, the mechanism or a separate element can be put into operation. According to reviews, it is not recommended to lubricate the nodes with a large amount of a substance, since when heated, it expands and can penetrate through the seals to the outside.

MolyWay Li 732 Bearing Grease

This product is designed for the lubrication of plain bearings and rolling bearings and heavy industrial applications. Contains molybdenum disulfide. Molybdenum bearing grease is made from high viscosity oils and lithium soap. Additionally, it contains additives that help prevent the formation of corrosion and oxides, increased wear and adhesion. With a 3% contentmolybdenum in the composition of the drug has anti-shock protective properties.

Molybdenum grease: application

Given the numerous reviews, it can be used not only for bearings, but also for other auto components. So, it can be used as a lubricant for CV joints. It is used as an alternative to graphite. It showed itself quite well when used as the main lubricant for the axles of wheel hubs, tips and rods, ball bearings. Can also be used to lubricate door hinges and locks.

The temperature threshold for application is from minus forty to plus one hundred and twenty degrees.

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

MolyWay Benefits

High resistance to oxidation and mechanical stress, excellent corrosion resistance, ability to withstand significant force and shock loads, good adhesion reduces the likelihood of frequent relubrication.

Looking at the variety of lubricants using molybdenum disulfide, it's hard to figure out which one to choose. Therefore, initially you need to decide for what purpose it is needed.

There are several types of this drug that may be for specific uses only, as well as general purpose lubricants. Additionally, attention should be paid torelease form, since many parts that require processing can be in hard-to-reach places, so the lubrication process for them should not be too burdensome. It is not recommended to purchase products of dubious origin, because this can lead to costly repairs.

So we found out what molybdenum greases are.