The advantage of using solid lubricants is: the operating temperature range of lubricating grease is generally -60??+350?, beyond this temperature range, the lubricating grease will be powerless, while the solid lubricant can give full play to its effectiveness. The load-bearing capacity of lubricating grease, is far inferior to that of solid lubricants; in high vacuum, strong radiation, active or inert gas environments, and in water or sea water and other fluids, lubricating greases are prone to failure, and solid lubricants are also needed.
Solid lubricants are also particularly suitable for food and textile industries that require non-toxic, odorless, and do not affect the color of products; the ageing of solid lubricants The change is small and the storage is more convenient. However, the shortcomings of solid lubricants are also very prominent. For example, once the lubricating film fails, it is difficult to regenerate; generally speaking, its friction factor is greater than that of lubricating grease; the heat on the friction interface is not easily taken away or dissipated; it is easy to generate debris , vibration and noise, etc.
Commonly used solid lubricants include: layered solid materials (such as graphite, molybdenum disulfide, boron nitride, etc.), other inorganic compounds (such as lithium fluoride, calcium fluoride, lead oxide, lead sulphide, etc.), soft metals (such as Lead, indium, tin, gold, silver, cadmium, etc.), high molecular polymers (such as nylon, polytetrafluoroethylene, polyimide, etc.) and composite materials.
Solid lubricant is sprayed, dipped, brushed, sputtered, or chemical conversion methods are used to directly form a solid lubricating film on the friction surface, or the solid lubricant powder is directly added to the matrix material to make a self-lubricating composite material. This is an effective way to solve the problem of lubrication of special parts on aircraft, spacecraft and missiles.
Fine molybdenum disulfide powder for lubrication & reduction of wear. The powder exhibits high lubricity and stability at up to 450°C in oxidizing environments. The powder is used for heavily loaded sliding surfaces of ferrous & non-ferrous metals, on plain bearings, slide ways, guide ways & threads or as a lubricant for cold forging and extrusion. It is also used as an additive to greases, dispersions and lubricating pastes.
The product features high load carrying ability. It reduces wear under influence of load and temperature and controls co-efficient of friction. It is adherent & stable against oxygen