Cooler castings, tighter tolerances
November 2007
Pneumatics & Hydraulics
Application
A steel casting company is using an Exair Model 5215 Cold Gun to remove heat from steel alloy casting gates on a grinding application. The more heat they can keep from the grinding wheel and from the casting gate, the closer they are to tolerance on the secondary polishing and blending application.
An Exair Cold Gun in operation
This is an alternative to expensive mist systems. It eliminates the costs associated with the purchase and disposal of cutting fluids and coolants and the worker related health problems from breathing airborne coolant or slipping on wet floors.
The Model 5215 system includes Cold Gun, single point hose kit, 10 mm cone nozzle, 32 mm fan nozzle and filter separator.
Principle of operation
The Cold Gun incorporates a vortex tube to convert an ordinary supply of compressed air into two low pressure streams, one hot and one cold. The hot airstream is muffled and discharged through the hot air exhaust. The cold air is muffled and discharged through the flexible hose, which directs it to the point of use. The magnetic base provides easy mounting and portability.
Compressed air supply
The gun is designed to use full line pressure of 5,5-6,9 bar. Temperature drop and flow are reduced when lower input pressures are applied. The use of clean, filtered air is essential to correct operation. A manual drain filter that removes moisture, dirt and other particulates from the compressed air is included with each system.
Control options
The Exair Cold Gun gives instant cold air when filtered compressed air is supplied to it. The gun is non-adjustable to prevent freeze-up during use. Cold air flow and temperature drop are factory set to optimise the gun's cooling capacity. Cycling on and off is a good way to save air. The Model 9012 manual shutoff valve can be used for on and off control. To automate turning the gun on and off with the associated grinding machine, the Model 9020 solenoid valve may be used.
For more information contact Rodney Bradley, ETEST, +27 (0)31 702 8302, [email protected], www.etest.co.za
Further reading:
Axial piston pump series for next-gen hydraulic applications
Pneumatics & Hydraulics
Moog has launched its new AXP Axial Piston Pump Series, a next-generation hydraulic solution engineered to deliver optimal performance, reliability and cost efficiency for industrial applications.
Read more...
The role of analogue gauges in a digital world
SA Gauge
Editor's Choice Pneumatics & Hydraulics
With so much focus on digital systems, remote monitoring and automation, it’s easy to assume that traditional analogue gauges have become outdated. Yet if you step into almost any plant, mine or processing facility, you’ll still find them in daily use, quietly doing their job without fuss.
Read more...
Robust sensors for pneumatic applications
ifm - South Africa
Pneumatics & Hydraulics
The pressure sensors from ifm have a G1/8 process connection, combined with a welded thin-film measuring cell. While offering an unbeatable price/performance ratio, this technology provides for high measuring accuracy in a very compact and robust housing.
Read more...
Seven years of uninterrupted service
Pneumatics & Hydraulics
A set of hydraulically operated Corflex pinch valves, installed in 2018 at a major North African gold mine, has delivered in one of the continent’s most demanding slurry-handling applications.
Read more...
Controlling pneumatics via IO-Link
ifm - South Africa
Pneumatics & Hydraulics
Pneumatic airboxes control cylinders or actuators using compressed air, and are found in a wide range of industrial applications.
Read more...
Counterweight balancing in industrial robots
Pneumatics & Hydraulics
Hydraulics specialist, WEBER-HYDRAULIK is equipping KUKA robots with a hydraulic cylinder with an integrated pressure accumulator, which absorbs and balances the forces generated on the arm.
Read more...
How manufacturers achieve zero-leakage demands in hydraulic cylinders
Pneumatics & Hydraulics
Imagine a world where your hydraulic cylinders never leaked. The answer lies in a holistic approach that focuses on the fundamental components and their interactions, particularly the cylinder rod and its surrounding environment.
Read more...
The role of hydraulic systems in heavy machinery
Pneumatics & Hydraulics
In this article, we explore how hydraulic systems function, their role in powering heavy equipment, and why they are the preferred choice for industries requiring immense power and precision.
Read more...
Reliable, flexible and cost-effective rental compressed air
Pneumatics & Hydraulics
More businesses are turning to Integrated Air Solutions for rented on-demand compressed air, without the burden of capital expenditure.
Read more...
Axiom expands its hydraulic solutions with Powerstart piston accumulators
Axiom Hydraulics
Pneumatics & Hydraulics
Axiom is proud to announce a unique partnership with Powerworks, introducing a new generation of piston accumulators into the South African market, the Powerstart piston accumulators.
Read more...
printer friendly version