Tag Archives: operating liquid

Complete purification of I-12 industrial oil

I-12 industrial oil is a general purpose oil with no additives. It is made from sweet crude by selective purification.

This oil is used for lubrication of bushings of straight bar and linking machines, spindles of metal cutters, bearings of low power electric motors, and as an operating liquid in positive displacement of hydraulic drives operated indoors.

Combined purification methods of I-12 industrial oil are based on simultaneous influence of several electrical fields or a field with filtration.

The principle of combining electric field influence and centrifical force is implemented in cyclone separators and centrifuges equipped with a special electrical device.

By design, a triboelectric centrifuge purifier is a multifoil rosette with two chargers that create opposite charges in the industrial oil.  The passes through the swirler in a translational-rotational movement.  It them passes the oil through a circular ring space. Due to friction with barriers, contaminants become oppositely charged. Centrifugal force moves particles with a positive charge to the outlet wall where they are coagulated with negatively charged particles.  The charges are neutralized in the coagulated particles.

Then by the force of gravity and inertia, the particles are deposited in a special settling tank.

Comparing hydrocycling efficiency with that of a similar machine equipped with chargers, the chargers are 40% more efficient on average.

When using centrifuges with electrifying devices, the electric field may be obtained by voltage from an external source or by a triboelectric effect.  The triboelectric effect occurs due to rotor friction against special bars.  The rotor is made from a special dielectric material. (Plexiglas, PTFE, or some other dielectric material )

It is also possible to combine centrifugal force with a magnetic field.  It is done by installing permanent magnets into centrifuge systems to capture ferromagnetic particles. Diamagnetic and paramagnetic contaminants are only influenced by the centrifugal force.

The most widespread of combined industrial oil purification systems are devices combining elecrtric fields and filtration effects.  These include magnetic filters, filtering centrifuges and vibration (acoustic) filters.

In centrifuge filtration, the centrifuges operate at relatively low rotation speeds. Contaminants may be removed from the rotor either continuously or occasionally.

A magnetic filter is free from such a disadvange of magnetic purifier as selective removal of only ferromagnetic particles.  Such devices, beside permanent magnets, use special filters capturing non-magnetic contaminants.  An additional filter element (usually a metal mesh) protects the surfaces of the magnets from tar, sediment and other products of hydrocarbon oxidation.

In vibration filters the oil passes through a vibrating porous membrane.  The vibrations prevent sedimentation of contaminants on the surface and reduce hydraulic losses, increasing the filter’s service life.

It should be noted that the combined methods of purifying oil products are not widely used at this time due to the complexity of purifier design.

After Assembly; The Rinsing of Pipes with Operating Fluid

The purging of hydraulic system pipes is vitally important to the proper operation of your hydraulic system equipment.  Purging the pipes ensures that the hydraulic system will have trouble free operation for the duration of its normal service life.  If the purge is not performed, or the duration of the process is not sufficient, premature wear of the internal components will be accelerated.  The system will most likely malfunction and/or fail entirely.  Problems may even occur immediately after being placed into service.

Our company, GlobeCore offers unique equipment that can purify turbine oil, industrial oil, transformer oil and other industrial oils.  Purity of the liquid after treatment in one of the GlobeCore UVR plants complies with and usually exceeds all existing standards.  The GlobeCore Process will help prevent hydraulic systems from failing prematurely and will greatly help to increase the service life of the treated equipment.
In accordance with industry standards, the following positive results can be achieved after purifying hydraulic equipment by removing solid particles, moisture, and other harmful contaminates from the hydraulic fluid:

  1. Double the lifetime of hydraulic motors, valves, pumps and distribution devices
  2. Hydraulic system warranties can be extended by as much as two years due to the reduction in the risk of hydraulic system component failure during the warranty period.  Fluid purity however, must still be monitored and controlled and the hydraulic system must be cleaned annually.
  3. Reduction of equipment downtime for repairs.
  4. Elimination of the cost of transportation of equipment to repair sites.
  5. Reduction of downtime costs.

It should be noted that the common concept that changing the oil and filters removes all moisture and contamination from the hydraulic equipment is simply not true.  Contamination remains in the motors, valves and on the internal surface of high pressure hoses.  Changing the oil is certainly an improvement, but it is an incomplete process that is costly, inefficient and will require repeating more frequently than a true purification process.

With slight modification of the filtration system and the use of special filter elements, equipment down time costs can be reduced significantly.

Recent studies and experience shows that no less than 70% of hydraulic failures occur due to the presence of solid particulate matter in the hydraulic fluid.  This failure rate is even more alarming considering that over 50% of all failures occur in the hydraulic drive system.  If equipment is allowed to operate with contaminated liquid, it will lead to intensive and premature wear of the hydraulic drive components, reduction of efficiency and increased internal energy losses.   The consequences are lost time and increased operating costs.

If Serial Filters are used in the hydraulic system, the concentration of solids in the fluid will be approximately 0.022% by weight.  This is 4.4 times above the acceptable standard.  Particles from 10 to 40 micron in size can constitute up to 50% of the contaminants in the fluid.  These sizes mostly coincide with the clearances between friction surfaces and are therefore, the most dangerous and cause the most wear.

As with serial filters, Main Line Filters also cannot provide the required level of hydraulic fluid purification needed to prevent system failures by themselves.   The hydraulic drive therefore, must be rinsed by special means or processes.

The main method of liquid purification in operating hydraulic equipment is regular purification of the hydraulic fluid by GlobeCore’s UVR plants.

It should be considered that purging of pipelines with special detergents is only sensible at the very first stages. At the time of system assembly and commissioning, the system should be purged with the hydraulic fluid, since using a detergent may lead to additional contamination of the system.