Sandvik Coromant, with operations in North and South America, is now offering tooling dedicated to the challenging operation of machining valve seat pockets in oil and gas (O&G) applications. Composed of a combination of an elliptical Silent Tools adapter and CoroTurn SL cutting head, this solution is designed to overcome prevalent issues such as narrow flow bore diameters, vibration tendencies and long overhangs.
The challenges of machining valve seat pockets in the O&G industry encouraged Sandvik Coromant to create a tool with extended radial reach that offers high levels of security, repeatability and performance in this demanding back-turning operation. With elliptical Silent Tools adapters designed to reach deep seats and CoroTurn SL cutting heads featuring a lightweight structure, a stable tooling configuration minimizes vibration and offers extended reach in both roughing and finishing operations.
A recent back-turning trial in cladded Inconel 625 highlights how the solution can eliminate vibration and promote surface quality. Using an elliptical Silent Tools adapter, 25 mm CoroTurn SL cutting head, and Coromant Capto C6 tool holder for one roughing and two finishing cuts, the final pass witnessed a surface finish of 0.2 Ra (9 cla) achieved at a cutting speed of 27 m/min (90 ft/min), feed rate of 0.02 mm/rev (0.008 in/rev), and 0.1 mm (0.004 in) depth of cut.