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hpt 2022 #4

  • Text
  • Diamond tools
  • Cbn
  • Cvd
  • Pvd
  • Pcd
  • Cryogenic process cooling
  • Filtration
  • Precision tools
  • Sustainability
  • Harnischcom
  • Processes
  • Automation
  • Materials
  • Solutions
  • November
  • Titanium
  • Milling
  • Grinding
  • Cooling
  • Machining
■ Productivity and sustainability are not mutually exclusive ■ Precision tool cutting edge cooling ■ Filtration in machining processes ■ Retrofit unit for cryogenic process cooling ■ Automation of tomorrow

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cover story figure 2 Also the flute profile helps significantly with the chip removal. But that’s not all: the R&D specialists focused on a carbide grade that combines wear resistance and fracture resistance strength. The coating is distinguished by its excellent wear and oxidization resistance, and as an addi tional benefit diminishes the tendency of material sticking. “Not all titanium is alike”, says Markus Schnyder, COO of Mikron Tool. “Anyone who wants to process this material efficiently needs to know it inside out. During our development work, we examined various titanium materials and established that the different titanium types differ greatly; this is highly relevant for the way it is machined in industrial production. Pure titanium (grade 1 – 4) stands out due to its high corrosion resistance, while it has lower mechanical strength”. The right drill for each grade of titanium Markus Schnyder: “Alloyed titanium (grade 5 and higher) is incredibly strong but has low ductility. We worked like crazy to master these differences with chip removal technology. Three years of meticulous development work lie behind us. Our passion and the insights we gained have led us to a perfect solution: two specific geometries, one for pure titanium grades and one for titanium alloys. Thus, we can guarantee perfectly controlled chip removal, high drilling speeds and precisely repetitive processes with optimum machining quality for these difficult titanium materials. The right and specific drill for each titanium grade. This is our answer for handling this complex and ‘divine material”. Crazy drill cool titanium – twice as fast The new Crazy Drill Cool Titanium series is available in a diameter range of 1.00 to 6.35 mm (.04" – .250"). Mikron Tool has developed short drills with 3 x d and drills with 6 x d for pure titanium (CrazyDrill Cool Titanium PTC) and drills with 6 x d and 10 x d in combination with a special pilot drill for titanium alloys (CrazyDrill Cool Titanium ATC). (figure 2) For the cost-effective production of titanium components, tools are required which are specially adapted to the material properties of the various titanium grades. Titanium material as well as the workpiece are expensive, which is why high process reliability and calculable tool life are so important. If the latter can be improved, so much the better. Mikron Tool’s new high-performance drills for titanium have up to three times longer tool life and work with twice the feed than current competitors. Another outstanding aspect: with the ATC-version drilling is completed in one shot, without multiple machining steps. Things are heating up in the Mikron Tool think tank; drill into titanium even more quickly and safely; twice as quick and 2 – 3 times longer tool life in combination with excellent process reliability The result is impressive and proves once again, that Mikron Tool is a technological leader and will defend its position by machining difficult materials successfully. “We love getting the best out of our tools for our customers. Nothing is too ‘crazy’ for us”, says Alberto Gotti. further information: www.mikrontool.com 8 no. 4, November 2022

Producing threads in high-tensile steels Top-class tap for difficult-to-machine steels materials & tools Machining high-tensile steels presents particular challenges, as the tool must also achieve a long tool life in addition to top process reliability and performance. When it comes to problems of producing threads in such demanding materials, the Hoffmann Group has now developed a new tap that easily masters this task: the GARANT Master Tap Steel HT. In the case of high-tensile materials such as Toolox and Hardox, blind hole threads can be produced up to a maximum thread depth of 2xD. For materials with a somewhat lower tensile strength, thread depths of up to 2.5xD in the blind hole version and of up to 3xD for through hole threads are also possible. Thanks to the strong spiral point, the through hole machine tap remains stable and reliable even when under high cutting force loads 2: The cylindrically stepped guide thread of the blind hole machine tap prevents chip jams, which can lead to break-away of the thread flanks This specialist in the thread production segment is made from a high-quality and rigid HSS-E-PM tool material and is protected against process heat by a hard and low-friction multi-layer coating. A special feature is that two different coatings are used per application in order to adapt the process even more effectively to meet various different requirements. The tap for blind hole production is therefore coated with titanium aluminium nitride (TiAIN), while the one for through hole production is coated with titanium carbon nitride (TiCN). The geometric feature of the cylindrically stepped guide thread is relied upon in order to avoid the risk of chip jamming during the production of blind hole threads – which can lead to break-away of the thread flanks in the case of high-tensile materials. The through hole tap, on the other 0hand, remains stable and reliable even under high cutting force loads thanks to its strong and optimally crafted spiral point. With the new GARANT Master Tap Steel HT, M, MF and G threads can be produced both as blind hole and through hole threads. The taps with the M and MF design are manufactured only in the 6HX and 6GX tolerance, in order to counteract wear in case of abrasive materials. This results in reliable threads that are true to gauge being produced, and a long tool life. The GARANT Master product range was started by the Hoffmann Group 2015 aiming to provide particularly powerful and reliable tools for high-performance cutting. Since then, GARANT Master tools have opened up new performance classes, including the GARANT Master Steel HPC milling cutter, the GARANT Master Steel Feed and Speed solid carbide drills and the GARANT Master Steel Deep solid carbide deep hole drill. The product range now comprises a wide range of high-performance tools for applications such as drilling, milling and thread tapping in various materials, including steel, aluminium and stainless steel. further information: www.hoffmann-group.com no. 4, November 2022 9

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