Threading Technology – Clamping Technology 520

147 Machine Taps UNC UNF UNEF UN-8 M MF NPSF Rp (BSPP) G NPT NPTF Rc (BSPT) STI SELF-LOCK Accessories NPSM/NPSC Tech. Info v c Product Finder 1.7 Our EMUGE surface treatments and coatings NE2 NT Oxidation In a special installation, the tools are exposed to hot steam. This leads to the formation of a dark oxide layer on the tool surface. This oxide layer protects the surface, and acts as a good carrier of lubricants. Cold welding which occurs especially with low-carbon, soft steels, can be prevented in this way. Nitriding In a thermo-chemical treatment, the surface is enriched with nitrogen to a depth of approx. 0.03 to 0.05 mm. Since the surface becomes very hard (1000-1250 HV) and brittle, nitrided tools can be used with certain restrictions only in blind holes and in all work cases which necessitate reversing. In abrasive materials like cast iron, spheroidal cast iron, cast aluminum and duroplastics, tool life can be increased in a decisive manner. NT2 TIN Nitriding and oxidation The surface of the tools is first nitrided and then oxidized (NT + NE2). This treatment combines increased surface hardness with an improved lubricant-holding capacity. Titanium nitride (gold-yellow) In a PVD process (500 °C) a coating thickness of 3-7 μm can be realized. The coatings feature a high adhesion strength and TIN-typical properties against cold welding. TIN coating systems with additional code number (e.g. TIN-60, TIN-70) are optimized with regard to substrate and application. TICN GLT-1 Titanium carbonitride (blue-grey) In a PVD process (500 °C) a coating thickness of 2-4 µm can be realized. The hardness is approx. 3000 HV. The TICN coating will resist up to approx. 400 °C. Hard surface coating with anti-friction layer (dark-grey) In a PVD process (500 °C) a coating thickness of 2-4 µm can be realized. The combination of a hard surface coating (approx. 3000 HV) with a superimposed anti-friction layer yields decisive tool life advantages. Also, the chip flow can be very positively influenced. Please note: Before re-coating, tools need to be de-coated! GLT-8 CRN Diamond-like, amorphous carbon coating (black-grey) In a PVD process a coating thickness of 1-2 µm can be realized. The hardness is approx. 2500 HV. This mono-layer coating is an excellent choice for the machining of non-ferrous metals and aluminum with a low silicon content (< 7% Si). Thanks to the low friction, material adhesion is drastically reduced. This coating will remain resistant up to approx. 350 °C. Chromium nitride (silver-grey) In a PVD process (500 °C) coating thicknesses of up to 6 μm can be realized. With a hardness of 1750 HV, the excellent sliding properties will help to achieve long tool life in non-ferrous metals and thermoplastics (even at high temperatures).