Lubricants are composite complex systems that are used to lubricate equipment and metalworking parts.
Coolant helps to reduce the wear of machines and equipment in general at the enterprise.
Lubricants are composite complex systems that are used to lubricate equipment and metalworking parts.
Coolant helps to reduce the wear of machines and equipment in general at the enterprise.
Some liquids are used in internal combustion engines to cool and lubricate working organs.
The main requirements for lubricants are: freezing point below -40 degrees; high heat capacity; low viscosity at very low temperatures; low degree of foam formation; no destructive effect.
There are three types of lubricants.
It is pure mineral oil, aqueous emulsions and oils with additives.
For example, emulsions are obtained directly at the place of use.
The liquid is obtained by adding water to the concentrate.
The emulsion in concentrated form consists of half of mineral oil and the rest of emulsifiers.
In addition, the composition of the liquid contains binders, anticorrosive additives.
Antifreeze is considered as a type of coolant.
It is a liquid that is made from monoethylene glycol.
Antifreeze is most often used in cars and other cooling systems.
So, for cars, antifreeze must have the following properties: a high degree of temperature conduction; a very low temperature at which the liquid freezes; a high temperature at which the antifreeze boils; a low degree of viscosity at minimum temperatures; the presence of anticorrosive additives; a low degree of ignition.
Antifreeze in its pure form is not used almost anywhere.
First, the concentrate is obtained in production, and then, under special conditions, it is diluted with water in strictly defined proportions.
In order for the liquid to turn out to be of high quality, it is necessary to calculate the proportions of all the constituent components very accurately, not only at the initial production stage, but also during further dilution.
Lubricating and cooling liquids are also used for cutting metal and other materials.
Therefore, serious requirements are imposed on the coolant.
First of all, these are functional requirements, operational requirements and sanitary requirements.
Functional properties are the provision of the possibility of lubrication of friction units.
The liquid must penetrate into the contact area of the tool, as well as remove heat from there.
The operational requirements are characterized by the way the liquid is stored.
Most often, the liquid is in the unit in a closed tank.
Therefore, there should be no precipitation in it, and the possibility of ignition should not appear.
The sanitary requirements of the coolant are the absence of negative effects of the liquid on humans, as well as minimal environmental pollution.
There are parameters that indicate the effectiveness of using a particular coolant.
Such parameters include: chemical composition; jet velocity in the coolant stream; operating temperature of the liquid; particle sizes of the liquid in the stream.
To date, there are a large number of lubricants and coolants.
All of them are designed to work in certain conditions.
Natural mineral liquids are considered to be the most expensive.
Their quality makes it possible to ensure the smooth operation of all mechanisms where the liquid will be used.
Mineral coolant can work for several years without replacement.
09 Martha 2017