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Be it engine parts, frame components or landing gear parts, Sandvik Coromant says that it has a solution for almost all aerospace machining challenges. 

Beginning with engine components, parts made from heat-resistant super alloys (HRSAs) such as turbine discs, combustion casings and blisks make for challenging machining. Here, Sandvik says that producing difficult-to-access pockets and grooves necessitates 90°, 45° or T-shape Corocut angled inserts with sharp, ground geometries, while for turning operations, the use of the modular Coroturn SL70 tooling is a good strategy as it features blades designed to fit turbine disc profiles and pockets.

The Coromill 316 exchangeable head cutter, which has been released recently in a new version that offers internal coolant, provides an economical solution when milling turbine disc scallops. According to the company, this tool is also excellent at roughing impellor slots in titanium.

For rough milling around an external boss, a ceramic cutting tool such as Coromill 300C and Coromant Capto is the preferred combination, while Coromill 300 can be used for the helical ramping of larger holes from solid.

Where finish profile milling is concerned, a Coromill Plura end mill with 50° helix in grade GC1620 facilitates the light cutting action required. Concerning holemaking, the Corodrill 846 solid carbide drill is optimised for tough aero engine alloys due to high security and low axial cutting forces.

For aluminium aerospace frame components such as pylon brackets and wing ribs, the Coromill 316 exchangeable head milling cutter is a great option for high productivity milling and slicing (corner milling), while Coromill 331 and the new stocked, special aluminium end mill are the perfect fit for slotting and 2D pocket roughing operations respectively.

Flap/slat track parts made from tougher materials such as high alloy steels and stainless steels benefit from the application of cutters such as Coromill 345 for face milling and CoroMill 390 for 2D pocket roughing.

Switching to composite elements of the frame, such as the fuselage central wing box and vertical tail, cutters designed to accommodate the abrasive nature of these innovative materials are required.

When drilling composite/metallic stacks, a popular solution is Corodrill 854, while for edging Coromill Plura can pay significant dividends. In fact, a Coromill Plura ‘compression’ end mill for composites is now available which is designed specifically to counter splintering, a common composite machining defect.

With landing gear parts, the emphasis is on cutters able to withstand the rigours of machining titanium. Cutters such as Coromill 300 fitted with S30T or S40T inserts work well in face milling operations on landing gear beams, for example. For components such as the main fitting, the company says that deep-hole machining with T-Max tooling and internal turning with Silent Tools are proven solutions.

Sandvik Coromant

Part of global industrial engineering group Sandvik, Sandvik Coromant is at the forefront of manufacturing tools, machining solutions and knowledge that drive industry standards and innovations demanded by the metalworking industry now and into the next industrial era.

Part of global industrial engineering group Sandvik, Sandvik Coromant is at the forefront of manufacturing tools, machining solutions and knowledge that drive industry standards and innovations demanded by the metalworking industry now and into the next industrial era.

Educational support, extensive R&D investment and strong customer partnerships ensure the development of machining technologies that change, lead and drive the future of manufacturing. Sandvik Coromant owns over 3100 patents worldwide, employs over 8,500 staff, and is represented in 150 countries.

For more information visit www.sandvik.coromant.com or join the conversation on social media.

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