What is sodium grease used for?
Sodium greases are a generally fibrous textured, stringy greases that have been used as standard wheel bearing greases for years. They are low-cost greases that offer good shear stability and rust protection.
How do you make sodium grease?
Sodium (Soda) grease is produced by blending of thickener (Soda soap) and additives into petroleum base oil stock. Sodium greases have a dropping point about 175 °C and it can be operated at 121°C.
Is sodium a grease?
Sodium Grease (Soda Soap) Generally a fibrous textured, stringy grease, that was used as a standard wheel bearing grease for many years. Dropping points will vary between 300 – 400°F, and have good shear stability. A low-cost grease that has good rust protection, but very poor water resistance.
What is the chemical composition of grease?
The gel-type structure of grease is composed of base fluids, thickener and additives. Minerals or vegetable oils are used as the base fluid between 65%–80%. Fatty acids such as stearic, oleic, linoleic and linolenic are generally used in the grease compositions [9].
What is the most commonly used grease?
Lithium-based greases
Engineering assessment and analysis Lithium-based greases are the most commonly used; sodium and lithium-based greases have higher melting point (dropping point) than calcium-based greases but are not resistant to the action of water. Lithium-based grease has a dropping point at 190 to 220 °C (350 to 400 °F).
What is the most slippery grease?
The majority of Super Lube® Synthetic Greases contain Syncolon® (PTFE) which is one of the most slippery surfaces (lowest coefficient of friction) known to man. The Syncolon® (PTFE) particles in Super Lube® fill surface irregularities of mating parts and are compacted to form a smooth, lubricated surface.
How do you make grease?
A simple or conventional grease is prepared by reacting a single organic acid with one or more inorganic bases, while a complex thickener is prepared from two or more organic acids (e.g., a primary soap [metallic stearate] and a complexing agent [metallic salt]).
How do you make lithium grease?
How to make lithium grease
- Add the initial base oil (40-60% of total base oil) to an open kettle, start heating and mixing.
- Heat to 80-84°C (176-183°F)
- Add all the 12-HSA and HCO in any order and allow it to melt.
- At 88-90°C (190-194°F), add lithium hydroxide monohydrate slurry while mixing over 20-30 minutes.
Is vaseline a grease?
What is Vaseline? The term vaseline is used in many languages to refer to petroleum jelly (grease). Apart from the multiple home uses, vaseline is also used for industrial purposes. In the industries, it is mainly used for moistening plasticine, coating items that are prone to corrosion, and finishing wood.
What type of lubricant is grease?
Classification of Lubricants On the basis of its physical state, grease is classified as semi-solid lubricant. Solid lubricant・・・molybdenum disulfide, graphite, etc.
How many types of lubricant grease are there?
There are mainly three different types of lubrication commonly available in the market: boundary, mixed and full film. Each type has a different application and they rely on a secondary lubricant or in some cases the additives within the oils to protect against wear and tear.
What is sodium grease made of?
Sodium (Soda) grease is produced by blending of thickener (Soda soap) and additives into petroleum base oil stock. Sodium greases have a dropping point about 175 °C and it can be operated at 121°C. Therefore, Sodium greases are used in reasonably high temperature operations, such as electric motor bearings (Manual Engineer, 1999).
How grease is formed from base oil?
Grease forms after thickening of the base oil by thickener. The thickener in grease production is formed in situ by the saponification reaction. The saponification reaction involves, metallic base (NaOH) with fatty acid (Stearic acid) to produce the soap (thickener). The reaction is endothermic reaction and needs for heating.
What is the production process of lithium and sodium grease?
In general, grease production process includes, batch and continuous process. Process type depends on the public demand for grease and raw materials availability. In this research, the production process will be batch process. Lithium and Sodium greases production process consists of: 3.1 Feed Stocks