Каталог Iscar токарный инструмент 2017 - страница 357

USER GUIDE • GROOVE-TURN JETCUT Tools High Pressure (up to 340 Bar) The high pressure coolant feature has been in General Information existence for a long time in the metal removal world, taking a bigger role in today’s machining. Pressure Ranges ISCAR was one of the first cutting tools companies to Up to 30 Bar – Low pressure (LP) may provide respond to market needs by designing and producing some improvement in tool life. Usually will tools for ultra high and high pressure coolant flow. not have an effect on chip control. 30 – 120 Bar – High pressure (HP) the most commonly High pressure coolant was initially implemented used pressure range used with JETCUT tools. mainly for difficult-to-machine materials such as Increase in tool life, increase in cutting titanium, inconel and other heat resistant alloys. speeds, improved chip control. Later it was found that tool-life, productivity 120 – 400 Bar – Ultra high pressure (UHP) requires and chip control can be improved when special tool design in order to take advantage machining stainless and alloyed steel. of the extra pressure. Minor increase in tool life compared to HP range. JETCUT tools are essential and important in the Ultra high pressure coolant is usually implemented for aviation, aerospace and medical industries. machining titanium and heat resistant alloys when there is a need for very small chips How does it work? and higher machining rates. The stream velocity of the coolant emitted from the Since 2000, ISCAR has provided hundreds of pump increases as the coolant holes become smaller. special tools featuring ultra high pressure coolant When it emerges out of the tool through the nozzle, capability, for various customers and applications. the velocity is very high, exerting considerable force on the chips, lowering their temperature and Pressure vs. Flow protecting the cutting edge from thermal shock. Each JETCUT tool is designed to work at a certain flow High temperature alloys produce a very high temperature rate, depending on the pressure. The flow rates are listed as they are being cut. By effectively removing the heat, in the catalog pages for each tool. The user should verify the chips become less ductile and thus easier to break. that his pump can supply the required flow in order to Shorter chips are easily managed - they do not achieve the optimal results. The pump data sheet will tangle around the workpiece or machine parts, so usually list the maximum flow rate for each pressure range. there is no need to stop the process frequently. Usually in conventional cooling the chip prevents Chips & Pressure the coolant from reaching the insert rake face in the The coolant flow will start to break the chips at a cutting zone. The coolant stream of the JETCUT certain pressure, depending on the specific tool tools is directed precisely between the insert rake and the workpiece material. If the chips are not face and the flowing chip. This results in longer breaking, the pressure should be increased until tool life and a much more reliable process. chip control is achieved. Above this pressure, as it is increased the chips become smaller and smaller. It is possible to control the size of the chips by modifying the pressure in order to achieve the desired chip size. The coolant channels of the JETCUT tools feature outlets very close to the cutting edges, thus gaining the following advantages: • Shorter machining time – the cutting speed 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. 353