Page 432 - ISCAR(TURNING-CATALOG-42-2022)

USER GUIDE
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GROOVE-TURN JETCUT Tools High-Pressure (up to 340 bar) General Information

The high-pressure coolant feature has been in existence
for a long time in the metal removal world, taking a bigger
Pressure Ranges
Up to 30 bar – Low pressure (LP) may provide some
role in today’s machining. ISCAR was one of the first
cutting tools companies to respond to market needs by
improvement in tool life. Usually will not have an effect on
designing and producing tools for ultra-high and high-
pressure coolant flow. High-pressure coolant was initially
commonly used pressure range used with JETCUT tools.
implemented mainly for difficult-to-machine materials
Increase in tool life, increase in cutting speeds, improved
chip control. 120 – 400 bar – Ultra high-pressure (UHP)
such as Titanium, Inconel and other heat resistant alloys. chip control. 30 – 120 bar – High-pressure (HP) the most
Later it was found that tool life, productivity and chip requires special tool design in order to take advantage
control can be improved when machining stainless and of the extra pressure. Minor increase in tool life compared
alloyed steel. JETCUT tools are essential and important to HP range. Ultra high-pressure coolant is usually
in the aviation, aerospace and medical industries. implemented for machining Titanium and heat resistant
alloys when there is a need for very small chips and higher
How does it work? machining rates.
The stream velocity of the coolant emitted from the pump Since 2000, ISCAR has provided hundreds of
increases as the coolant holes become smaller. When it special tools featuring ultra high-pressure coolant
emerges out of the tool through the nozzle, the velocity capability for various customers and applications.
is very high, exerting considerable force on the chips,
lowering their temperature and protecting the cutting edge Pressure vs. Flow
from thermal shock. High temperature alloys produce a Each JETCUT tool is designed to work at a certain flow
very high temperature as they are being cut. By effectively rate, depending on the pressure. The flow rates are listed
removing the heat, the chips become less ductile and thus in the catalog pages for each tool. The user should verify
easier to break. Shorter chips are easily managed, they that the pump can supply the required flow in order to
do not tangle around the workpiece or machine parts, so achieve the optimal results. The pump data sheet will
there is no need to stop the process frequently. Usually in usually list the maximum flow rate for each pressure range.
conventional cooling the chip prevents the coolant from
reaching the insert rake face in the cutting zone. The Chips & Pressure
coolant stream of the JETCUT tools is directed precisely The coolant flow will start to break the chips at a
between the insert rake face and the flowing chip. This certain pressure, depending on the specific tool and
results in longer tool life and a much more reliable process. the workpiece material. If the chips are not breaking,
the pressure should be increased until chip control
The coolant channels of the JETCUT tools is achieved. Above this pressure, as it is increased
feature outlets very close to the cutting edges, the chips become smaller and smaller. It is possible
thus gaining the following advantages: to control the size of the chips by modifying the
pressure in order to achieve the desired chip size.
TEXT may be increased by up to 200% when
• Shorter machining time – the cutting speed
machining Titanium & heat resistant alloys
• Longer tool life – tool life increases by up to
100% not only on Titanium and heat resistant
alloys, but also on stainless and alloy steels
• Improved chip control – even on the most ductile and
problematic materials, small chips can be obtained
• Very effective cooling down of the cutting edge,
which reduces sensitivity to heat fluctuations
• Safer and more stable process
JETCUT tools provide advantageous performance also when
conventional pressure is applied.

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