Coolant delivery systems vary in CNC machining
One of the most important parts of the machining process is the coolant. It is widely used to temper high temperatures typically during machining and helps in chip evacuation. In this blog, you will discover the various types of coolant delivery methods that are typically used in CNC machines and their applications across the globe.
Overview of types CNC coolant delivery systems
Coolant is delivered in multiple forms, both in pressure and properties. The most popular coolant forms include pressure, mist, air, flood coolant and minimum quantity lubricant (MGL).
Inaccurate pressure in the coolant can result in serious product damages. On the other hand, the wrong coolant amount drains your resources at a rapid rate. Delivery systems are important for maintaining your equipment’s functionality, so it’s vital to fully understand the process behind the most common types.
The flooding method streams massive coolant quantities on the machine and the workpiece. It is a low-pressure method that creates lubricity and removes any chips to prevent chip recutting. The flooding system allows for easy debris management during the machining process.
Another low-pressure coolant type that is adequate for scenarios where heat and chip evacuation are not the biggest concern. This coolant system releases a fluid usually atomized into tiny near-invisible particles. Due to this effect, the coolant gets released in the form of mist or fog when applied to the machine surface or workpiece. It delivers more optimal lubrication and is mostly applied in top-speed usage.
Air Coolant System
This system cools down and clears away chips with no objective to lubricate. It doesn’t cool as effectively as a water or oil-based coolant would. Air coolant is mostly preferred over alternative types that come in direct contact with the part especially when dealing with sensitive materials. For example with plastics, where thermal shock or rapid contraction and expansion of a part can occur if a direct coolant is applied.
Jetting coolant systems deploy the coolant liquid at elevated pressures. In some ways, It is similar to the flood coolant system but delivered in higher than 1,000 psi, hence the name “jet” – it’s the most powerful option, but a fantastic option for chip evacuation and removal since it blasts the chip away from the component. The only downside is that the jetting system pressure can be so high that it can break miniature diameter tooling. It is often used in drilling operations for that reason.
Minimum Quantity Lubricant (MQL)
Many companies go the MQL route due to its cost and performance efficiency and exceptional environmental benefits. The appropriate coolant amount will significantly reduce your expenses and wasted material. The MQL is mostly applied as an aerosol or a very fine mist to provide adequate coolant to conduct a particular operation effectively.
If you aren’t sure what method is most suitable for your equipment or job, contact us to get your questions answered and our team of experts will happily assist you.