Benefit of Tungsten Disulfide for Automobile

Tungsten disulfide has been widely applied in the automobile industry and brought a lot of benefits for automobiles.

As a new type of solid lubricating material, tungsten disulfide is one of the materials with high level of lubricity at present. Its chemical property is stable, and it can be applied in all kinds of demanding conditions.

 Because tungsten disulfide is characterized by high wear resistance, rust protection and corrosion protection. In addition, it is environmentally friendly and innocuity so that it won’t cause harm to human health and pollutes the environment. Tungsten disulfide has been widely applied in the automobile industry and brought a lot of benefits for automobiles.

Tungsten disulfide with layered crystal structure owns high level of lubricity and low coefficient of friction. Dynamic frictional coefficient is 0.030 while static friction coefficient is 0.070. Coating the surface of automobile parts with tungsten disulfide can reduce the wear, bite or the device maintenance. In addition, the working efficiency has been improved, and the service life has been extended. As a result, the time of user and the cost have been saved. There are some examples of the application of tungsten disulfide in the automobile industry.

During the operation of automobile engine, the temperature will be extremely high and the piston will turn back and forth. Under that severe condition, the piston will accelerate wear. Due to the low coefficient friction of tungsten disulfide, the good lubricating performance will still be kept at the high temperature. At this time, we can coat the piston surface with it thereby reducing the wear, lowering the temperature and extending the service life.

Most of drivers know that the piston ring is the most un-durable part in the engine. The piston ring turns together with piston at high speed and is affected by the gas with high temperature and pressure in the air cylinder. The motor oil is easy to deteriorate at high temperature. Therefore, it has been severely worn. With the application of tungsten disulfide, the wear decreases, and the ring can happily move together with piston at high speed, pressure and temperature.

The crank axle is the most important part in the engine. The functional mode is turning at high speed. Therefore, the property of wear and fatigue resistance is in need. The surface of axle journal has generally gone through high frequency quenching or nitrogen treatment. The surface is coated with tungsten disulfide and refined, and its wear resistance and fatigue strength are greatly improved. However, tungsten disulfide has excellent mechanical stability and thermal stability, which can ensure the lubrication effect and wear reduction of these parts.

During the frequent operation, the lubrication which is spread on the surface will deteriorate so that loses the efficacy of lubrication. 

Tungsten disulfide is characterized by great compatibility and water flushing corrosion resistance. It ensures that the surface of the bearings in the pump and silicone oil fan clutch and the helical gears always have a layer of lubrication in order to prevent from being rusted and corrosive.

With such excellent properties, the tungsten disulfide can not only be applied to the automobiles but also to some high technology fields, such as engineering industry, plastics industry, medical and implement products, military industry and satellites.

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