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Questions/answers on the microjet® minimum quantity lubrication system

Questions/answers on the microjet® minimum quantity lubrication system

FAQ

How does the microjet® minimum quantity lubrication system differ from other minimum quantity cooling lubrication systems?

The microjet® minimum quantity lubrication system differs in essential points from conventional minimum quantity cooling lubrication systems (MMKS):
    •    direction stable spray jet
    •    no oil fog formation
    •    minimum and reproduceable liquid consumption
    •    largely maintenance-free
    •    modular construction system
    •    process-safe

Last update on 29-08-2019 by microjet.

Which liquids can be sprayed?

All Newtonian liquids can be sprayed.

Last update on 29-08-2019 by microjet.

How is the liquid guided to the nozzle?

The liquid is forced into a capillary tube by the overpressure in the storage tank, which leads into the mixing chamber of the two-phase nozzle. Mixing with the compressed air takes place only in the nozzle.

Last update on 29-08-2019 by microjet.

How is the minimum amount of liquid controlled?

The minimum quantity of liquid is determined by the variable tank pressure. The capillary tube takes over the function of the regulating device. With regulators it is not possible to control the minimum quantities of a few ml per hour.

Last update on 29-08-2019 by microjet.

Is a constant quantity of liquid guaranteed?


The amount of liquid at the nozzle is the same at all times. In contrast to systems with reciprocating pistons, the minimum quantity is not achieved by cycles with the consequence of constantly changing overgreasing and leaning of the mixture, but by constant flow velocity in the capillary tube.

Last update on 25-09-2019 by microjet.

Does each two-phase nozzle receive the same amount of liquid?


Each two-phase nozzle receives an exact and constant quantity of liquid via a separate capillary tube.

Last update on 25-09-2019 by microjet.

Does the amount of liquid change when the amount of air changes?


As the air volume can be controlled separately independently of the tank pressure, the liquid volume does not change. As a result, it is possible to make the spray jet more lean by increasing the amount of air or more rich by decreasing the amount of air while maintaining the same amount of liquid.

Last update on 25-09-2019 by microjet.

What is the function of the air jacket of the two-phase nozzle?


The air jacket focuses the spray jet and prevents the penetration of liquid particles into the ambient air. This enables absolutely oil mist free operation.

Last update on 25-09-2019 by microjet.

How many nozzles can be connected to a microjet® system?


In principle, any number of nozzles can be connected. Any number of nozzle hose packages with up to 5 nozzles each can be connected to a microjet® pressure tank via intermediate distributors.

Last update on 25-09-2019 by microjet.

Can the spray jet be pulsed?


Each nozzle hose package connection on the microjet® unit or a control manifold can be equipped with electrically or pneumatically controlled valves for separate control of liquid and air. This makes very short cycle times possible.

Last update on 25-09-2019 by microjet.

Can the two-phase nozzle also be used for blowing pure compressed air?


The air valve can be controlled separately due to the separate control of liquid and air. 
This makes it possible to blow pure compressed air, e.g. for cooling or removing chips from the working area.

Last update on 25-09-2019 by microjet.

What are the follow-up costs when using a microjet® minimum quantity lubrication system?


Except for low liquid and air consumption there are no further costs when using the microjet® minimum quantity lubrication system.

Last update on 25-09-2019 by microjet.

Wie kann das microjet® System an unterschiedliche Bearbeitungsmaschinen angepasst werden?


Due to the large number of different configuration options, adaptation to the machine conditions is possible within wide limits.

Last update on 25-09-2019 by microjet.

How does the chip removal take place when using the microjet® system on cutting machines?


Since dry chips are produced during machining with microjet®, they can easily be blown away or vacuumed off. Due to the characteristic focusing of the spray jet in the air jacket, even a small amount of air is sufficient to keep the immediate working area chip-free at all times.

Last update on 25-09-2019 by microjet.

Why can longer tool life be achieved with the microjet® system?


With the use of the air jacket, the microjet® spray jet can penetrate the air jacket of fast-running tools and thus ensures excellent lubrication directly at the point of action between the workpiece and the tool, even at maximum cutting speeds. Due to the low mass of the liquid particles, they are not thrown away by centrifugal force.

Last update on 25-09-2019 by microjet.

Do workpieces have to be cleaned after machining with the microjet® system?


After machining with microjet®, a subsequent washing process can be dispensed with, as the workpieces remain clean and dry.

Last update on 25-09-2019 by microjet.

Do special safety measures have to be taken when machining with the microjet® system?


No special occupational safety measures need to be taken. The device is also ideally suited for use on manually operated machines, as the working environment is not impaired.

Last update on 25-09-2019 by microjet.

Where is the microjet® system already used successfully?


It is used in various industries for all types of metal cutting and non-cutting machining. There are also a number of special applications such as bearing and chain lubrication, application of preservatives, release agents, liquid fats, liquid waxes or food oils.

Last update on 25-09-2019 by microjet.

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