The main challenge in roughing turbo exhaust housings is their complex shape, thin walls and intricate clamping, which together make for a vibration-prone operation. Here, the M612’s positive geometry has the effect of providing a smoother cutting action. In turn, higher metal removal rates can be achieved, leading to shorter cycles, while the use of 12 cutting edges, six on both sides, contributes further to low component costs.
“Approximately 50 million turbo chargers are produced every year – cast iron and stainless – but the cost of machining stainless is often up to 20 times higher, as these operations are characterised by short and irregular insert tool life, as well as uneven wear,” says Jacques Gasthuys, automotive application engineer at Sandvik Coromant. “Our goal was to develop a strong cutter that could help reduce component costs.”
