Semi-finished products Plastic granules Special compounds

Lathe turningContinuous chip during lathe turningDuring the lathe turning process the ZEDEX ® highperformance polymers should be worked with a largechip cross section removal and high feed rate speed.To obtain a high quality surface, the cutting should bedone in one operation.Therefore, the workpiece outline and the surfacequality should be obtained in one operation. To makeinternal bores, the normal internal boring tools ofmetal are usable. Care should only be taken in thecreation of a continuous nozzle chip. For high qualityinternal bores, special drill bits, with a helix angle of15° are prefered.When cutting a thin-walled workpiece a flat groundblade tool should be used. A continuous chip, createdfrom the most of ZEDEX ® high performance polymers,is to be removed with an industrial vaccuumsystem provide of a pre-filter. When a big lathe turninglength is required, the workpiece should be cutedby a lathe steady rest.MillingTo dissipate the milling machining overheat, it issuggestible to choose the largest possible millingstressed cross section. This process is obtainable witha high feed rate, a large depth and a not to high cuttingspeed.In peripheral milling, the surface quality of theZEDEX ® high performance polymers, depends on themain cutting edge. This is influenced by the cuttinggeometry and especially by the feed rate. The greatestsurface quality is achievable with a single-edgedcutter tool. The more cut edges a multi-edge cuttingtool has got, the more comma-shaped chips have tobe eliminate. To obtain injection moulding gears witha high teeth quality, must be used a hob cutter in thefinal process.Filing, rasping, scrapingFiling with rough-hewn wood rasps is well-tried, butfiling with a file blades represents an advantage. Theyhave got holes on their surface, that permit the shavingsto escape from the workpiece surface. Thus, thelubrication of the workpiece’s surface is prevented.Thanks to its design, to remove the shavings from thefile blade, it is enough to tap it.To obtain a smooth workpiece surface, it is better touse a card scraper than a file or a rasp. With a cardscraper is also possible to eliminate sharp edgesfrom the plastic workpiece. A necking tool or a threecornered scraper will be used as scraper tool, toprepare the workpiece for welded joints. To scrapefillet welds, a tool with a minimum radius of 2 mm isrecommended; so as to avoid the generation of notchstresses.A flexible vacuum hoseCuttingSheets made of ZEDEX ® high performance polymerare cutable with a plate shear.ZEDEX ® basic types ZEDEX ® families Post heattreatmentMachiningShippingoverviewSterilizationChemicalresistance29