Droplet size measurement of cutting fluid aerosols

L. Hillemann*; S. Holfeld; R. Heidenreich, Institute of Air Handling and Refrigeration (ILK), Germany

While machining and forming metals in machine tools, cutting fluids are used to cool and lubricate the tool and to remove the swarf. Due to high temperatures at the cutting edge and the mechanical dispersion vapors and droplet aerosols are generated, which must be collected and deposited in an extraction system. For this purpose, a number of methods are available, for example inertial separators, electrostatic precipitators or air filters. The separation efficiency for liquids is determined by the droplet size of the aerosols. Applying different measurement techniques developed for solid particles it has to be considered, that cooling lubricants based on hydrocarbons are composed of semivolatile organic substances. Therefore the size of the droplets is determined by the concentration of the vapor phase and thus also by the concentration of the aerosol itself. Diluting the aerosol before or during the measurement can affect the measured droplet size....

...The article discusses approaches for measuring the droplet size distribution by means of time-of-flight method and a measurement methods based on determining the electrical mobility of particles....

Session: G9 - Short Oral Presentations
Day: 23 October 2019
Time: 14:45 - 16:00 h

Learn more at FILTECH 2019 - Register Now!