threading WALTER PROTOTYP Coatings and surface treatments nit Nitriding improves wear resistance by increasing surface hardness vap Vaporization/

threading WALTER PROTOTYP Coatings and surface treatments nit Nitriding improves wear resistance by increasing surface hardness. vap Vaporization/steam treatment improves the adhesion of the cooling lubricant to prevent cold welding. Applications in stainless steels. nid Nitriding + steam treatment extends tool life in the machining of grey cast iron. TiN Titanium nitride is currently the most widely used and its application is practically universal. By comparison with other thin layers, does not always deliver the longest tool life. Due to its chemical affinity, TiN usually offers no benefits in the machining of titanium. TiN/ vap Titanium nitride + vaporized in conjunction with a high-helix angle tap, significantly improves chip formation in relatively deep blind holes in steel and aluminum. The TiN/vap combination is available standard on the Paradur Synchrospeed as well as for a variety of special tools. TiCN Titanium carbon nitride is harder than TiN (approximately 3,000 HV to 2,300 HV), but slightly less thermally stable (approximately 400 to 600 °C). It is beneficial in the machining of abrasive materials. TiCN is particularly suitable for grey cast iron and AlSi alloys with an Si content higher than 5 %. Highly universal layer for thread milling. CRN Chromium nitride reduces cold welding in Cu and Al alloys in a similar way to hard chromium. However, it is approximately 650 HV harder and therefore has a higher wear resistance to more abrasive materials. TAFT Titanium aluminum nitride is used as part of a TAFT multilayer system on taps or, in the THL layer, as the base layer underneath the soft material layer of tungsten carbide/carbon (WC/C). ACN Aluminum chromium nitride is a titanium-free hard layer suitable not only for the machining of titanium alloys, but also for thread cutting and forming in cold extrusion steels. TAX Titanium aluminum nitride is used exclusively for thread milling. The TAX layer is used where a high degree of thermal stability is required, e.g. in the machining of hardened steels. THL Hardlube is a tried-and-tested solution for dry machining or minimum quantity lubrication. It also delivers outstanding performance in the machining of stainless steels with emulsion. THL is generally compatible with almost any kind of steel material. Chip formation is improved in comparison with TiN and TiCN, which is an important advantage particularly in the machining of relatively deep blind holes in long-chipping materials. NHC New Hard Carbon is a carbon coating having a hardness of over 5,000 HV, which makes it comparable to diamond. This coating is used primarily for composite materials and non-ferrous metals and reduces both adhesion and abrasion. D 437 Technical information