Edge type filter
HOFFMANN APPARATE
The HOFFMANN plate-type edge filter is a filter for micro-filtering of grinding oils, in particular for tool grinding, that does not require the use of consumables
Modern machining methods, such as high-speed cutting (HSC) and high-speed milling (HSM) place ever-increasing demands on the properties of tool materials and promote the increasing use of carbide tools. The machining required during manufacturing and sharpening of these high-strength tools also places high demands of the grinding oils in the process, as these oils must not only withstand high hydraulic stresses but are also subjected to ingress of very fine particles of impurities. As grinding dust from carbide metals is very fine-grained however, filtration using conventional filter facilities, such as belt filters and centrifuges, does not meet the requirements imposed for these applications. HOFFMANN Maschinen- und Apparatebau GmbH, based in Lengede, Germany, has therefore developed a highly effective filtering system to perform these demanding filtering tasks.
