Small high pressure coolant (HPC) units such as this one are suitable for many machine tools, and are an excellent way to control and evacuate chips while increasing productivity. Image: ChipblasterClick image to enlargeby Kip Hanson

Anyone who’s placed their finger over the end of a garden hose and used the resultant stream of water to spray off the sidewalk knows the effectiveness of high velocity fluid.

Scientists began exploring how this force could be harnessed for manufacturing more than 60 years ago, when Reginald J. S. Pigott, director of the engineering division of Gulf Research and Development Co. filed a patent in 1951 on the use of high velocity cutting fluids to improve tool life in metalcutting operations. Since then, a number of companies have developed high pressure coolant (HPC) equipment for use on CNC lathes and machining centers.

One of these is Chipblaster. President Greg Antoun says the problem with non-HPC coolant is that metalcutting temperatures are well above the boiling point of water, causing cutting fluid to vapourize before it can touch the workpiece where it’s needed most–in the cutting zone. But by forcing a stream of pressurized cutting fluid through a triangular nozzle, velocity sufficient to break through the vapour barrier and strike the workpiece is made possible.

“People talk about high pressure, but the only thing pressure does is create velocity,” Antoun says. “Even then, you have the Bernoulli effect, which tends to pull apart a stream of water. It’s the triangular nozzle shape that makes HPC possible. The points of the triangle are sacrificial, protecting the stream of liquid as it flies through the air, and making certain there’s still enough velocity to reach the cutting zone.”

Antoun says HPC does such a good job at cooling the insert and the area immediately around it that machinists should (usually) increase cutting parameters to compensate. This raises the amount of heat generated in the cut and brings carbide back to its optimal working range. The result? Tool life is greatly improved. Feeds and speeds can often be doubled, tripled, or more, with a commensurate increase in productivity. And the cooling effect also aids in cold working the material as it flows across the insert face, thus helping to break the chip. Simply put, HPC is a no-brainer for the majority of machining operations.

www.chipblaster.com

Go Big, or Go Home

by Kip Hanson

Turning gargantuan parts? Four cutting tool manufacturers weigh in with recommendations

Square shoulder milling

The Turbo 10 for square shoulder and slot milling operations is now availalbe in corner radii from 0.4 to 3.1 mm when machining aluminum and other materials that require sharp cutting edges.

Coolant through tooling

Heimatec has announced the immediate availability of its newest coolant-through feature on all the company’s current tooling. 

Turning Back Time

by Kip Hanson

Tips to give your turning tools the long life they deserve

Quietly boost productivity with silent tool milling adaptors

Sandvik Coromant has launched an extension to its range of silent tools milling adaptors.

Energy Fix

By Noelle Stapinsky

Despite challenges in Canada’s energy and resource sector, future holds opportunities

Full Feed Ahead

by Kip Hanson

Light cuts and high feedrates spell improved rough milling operations

New turning bars

Seco has launched a new line of turning bars to its Steadyline family, that feature patented damped tooling the company says provides excellent productivity for a range of long overhang machining operations.

Machining hardened steels

OSG's XOPRO WHO-Ni drill series can handle the heat when processing Nickel Alloy, Inconel 718 and other hardened steels.

Iscar creates new complex shape for indexable insert

Cemented carbide indexable inserts are an integral part of cutting tools today. Progress on manufacturing technology and design methods has led to important breakthroughs in the production of indexable inserts, says Iscar in this white paper.

A New Breed of Toolmaker

by Staff Writer  |  Photos Solaxis Ingenious Manufacturing Inc.

Quebec 3D printing firm redefines the meaning of ingenious

Chip breakers improve surface quality

Improve surface finish in long-chipping materials with Big Kaiser Precision Tooling’s two new insert chip-breakers.

IMTS: More to see in 2012

Event on track to rank among top five largest IMTS events covering 1.2 million net square feet of trade show space with more than 1,800 exhibitors

The hole story

by Mary Scianna

Indexable drills, boring heads support BC marine product manufacturer’s quest for productivity improvements and growth

Automotive tooling solutions

Iscar Tools spotlights tooling advances for the automotive manufacturing industry

Constantly changing factors such as unstable oil prices, ever more demanding environmental protection legislations and the evolution of more efficient technologies ensures a continually changing global automotive market place. These factors also increase the ongoing competition between carmakers and OEMs and dictate today's automotive industry manufacturing trends.

Stay In Touch

twitter facebook linkedIn