It is now generally known that supplying coolant at high pressure and velocity provides many benefits. Most notably high pressure coolant improves chip breakage and ejection, supporting improved surface finishes and extending tool life. High pressure coolant allows for higher machining speeds and feed rates, enhancing overall efficiency.
High
speed grinding applications require the
coolant to be applied to the surface at a sufficient
velocity to clean and cool the grinding tool. The
velocity of the coolant must exceed the tool surface to
which it is applied to penetrate the superheated steam
barrier that results from the grinding process.
The
coolant will contain particles that are abrasive and
problematic for conventional pumps having cups, packing and
seals; using our sealless pumps eliminates wear and leakage
concern while reducing your filtration requirements.
Milling
applications also benefit from high pressure coolant,
primarily from better contact between the tool and product,
enhancing cooling and extending tool life. The high
velocities associated with high pressure coolant aid help
blow chips and debris away from the tool interface, thus you
aren't re-cutting material which accelerates tool wear and
effects the surface finish of the product.
As with
grinding applications, the recycled coolant will have fines
in it that damage other types of pumps. It is possible
(and expensive) to filter your reclaimed coolant to very
fine levels, however realize that many of the additives
which enhance coolant performance can be "filtered-out" once
you start filtering <25 microns. Our pumps will easily
handle particles up to 250 microns, so you can reduce your
filtration to what is needed to protect other system
components such as your rotary unions.
Turning/lathing centers generally benefit in the same ways as the
other applications mentioned above except the coolant is
typically not traveling through the tool. The primary
advantage for turning/lathing applications
is reduction of thermal shock which contributes to premature
tool failure. You must have sufficient mass at high
velocity to penetrate the vapor barrier which forms from the
friction between the product and tool.
The flow rates
for high pressure coolant systems used in lathes tends to be
on the low side, ≤ 3 GPM and thus our M03 systems are
commonplace for turning centers.
Deep
hole drilling, sometimes referred to as "gun drilling" as
related to drilling gun and rifle barrels is another very
common high pressure coolant application.
Drilling
applications benefit most from enhanced chip breakage and
ejection associated with high velocity coolant. As
with milling applications, this reduces tool wear related to
re-cutting chips. In a drilling application better
ejection of material also equates to reduced tool
deflection, enabling tighter tolerances.