Каталог Iscar обработка канавок 2022 - страница 176

GROOVE-TURNTEXT • USER GUIDE JETCUT Tools High-Pressure (up to 340 bar) The high-pressure coolant feature has been in existence General Information for a long time in the metal removal world, taking a bigger Pressure Ranges role in today’s machining. ISCAR was one of the first Up to 30 bar – Low pressure (LP) may provide some cutting tools companies to respond to market needs by improvement in tool life. Usually will not have an effect on designing and producing tools for ultra-high and high- chip control. 30 – 120 bar – High-pressure (HP) the most pressure coolant flow. High-pressure coolant was initially commonly used pressure range used with JETCUT tools. implemented mainly for difficult-to-machine materials Increase in tool life, increase in cutting speeds, improved such as Titanium, Inconel and other heat resistant alloys. chip control. 120 – 400 bar – Ultra high-pressure (UHP) Later it was found that tool life, productivity and chip requires special tool design in order to take advantage control can be improved when machining stainless and of the extra pressure. Minor increase in tool life compared alloyed steel. JETCUT tools are essential and important to HP range. Ultra high-pressure coolant is usually in the aviation, aerospace and medical industries. implemented for machining Titanium and heat resistant alloys when there is a need for very small chips and higher How does it work? machining rates. The stream velocity of the coolant emitted from the pump Since 2000, ISCAR has provided hundreds of increases as the coolant holes become smaller. When it special tools featuring ultra high-pressure coolant emerges out of the tool through the nozzle, the velocity capability for various customers and applications. is very high, exerting considerable force on the chips, lowering their temperature and protecting the cutting edge Pressure vs. Flow from thermal shock. High temperature alloys produce a Each JETCUT tool is designed to work at a certain flow very high temperature as they are being cut. By effectively rate, depending on the pressure. The flow rates are listed removing the heat, the chips become less ductile and thus in the catalog pages for each tool. The user should verify easier to break. Shorter chips are easily managed, they that the pump can supply the required flow in order to do not tangle around the workpiece or machine parts, so achieve the optimal results. The pump data sheet will there is no need to stop the process frequently. Usually in usually list the maximum flow rate for each pressure range. conventional cooling the chip prevents the coolant from reaching the insert rake face in the cutting zone. The Chips & Pressure coolant stream of the JETCUT tools is directed precisely The coolant flow will start to break the chips at a between the insert rake face and the flowing chip. This certain pressure, depending on the specific tool and results in longer tool life and a much more reliable process. the workpiece material. If the chips are not breaking, the pressure should be increased until chip control The coolant channels of the JETCUT tools is achieved. Above this pressure, as it is increased feature outlets very close to the cutting edges, the chips become smaller and smaller. It is possible thus gaining the following advantages: to control the size of the chips by modifying the • Shorter machining time – the cutting speed pressure in order to achieve the desired chip size. may be increased by up to 200% when machining Titanium & heat resistant alloys • Longer tool life – tool life increases by up to 100% not only on Titanium and heat resistant alloys, but also on stainless and alloy steels • Improved chip control – even on the most ductile and problematic materials, small chips can be obtained • Very effective cooling down of the cutting edge, which reduces sensitivity to heat fluctuations • Safer and more stable process JETCUT tools provide advantageous performance also when conventional pressure is applied. 430 ISCAR