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Sandvik Coromant COROMILL Carbide Milling Insert, R390 Style, Rectangular, GC1010 Grade, TiAlN Coating, R39011T308MPM,0.141" Thick, 0.032" Corner Radius (Pack of 10)
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About Sandvik Coromant COROMILL Carbide Milling
The Sandvik Coromant R390 GC1010 right-hand carbide indexable milling insert has a rectangular shape, is available with a PL or a PM chipbreaker, and provides good wear resistance without limiting shock resistance for light or medium machining of hardened steel in average-to-good machining conditions. A combination of carbide and a thin coating of titanium aluminum nitride (TiAlN) applied through physical vapor deposition (PVD) performs well at high cutting temperatures and offers resistance to thermal cracking and plastic deformation. In general, coatings extend insert life and provide better wear resistance than uncoated inserts. PVD coatings maintain a sharper cutting edge than those with chemical vapor deposition (CVD) coatings. This positive insert is used with the CoroMill 390 milling cutter, a screw-style insert holding system for square shoulder milling and slotting. The insert is available with either a PL chipbreaker for light machining or a PM chipbreaker for medium machining. The PL chipbreaker is available with a choice of three edge performance types: E for highest sharpness and precision (sizes 11 and 17 only), M for highest security, or H for high sharpness and precision (size 18 only). The PM chipbreaker is available with E or an M edge performance type. The rectangular shape provides strong cutting edges. The insert has a hole in the center and two cutting edges. The size 11 insert has a 21-degree clearance angle, the size 17 insert has a 19-degree clearance angle, and the size 18 insert has a 15-degree clearance angle. Milling inserts are coded according to their specific cutting and application capability (e.g., R390-11 T3 08E-PL). Each section of the code represents details of the insert: hand, compatible toolholder series, size, thickness, corner radius, edge performance, and chipbreaker style. Insert shapes and sizes may have different cutting depths, speeds, lead angle, and feed rates. Generally, as the insert size and the inscribed width (iW) become larger, the maximum cutting depth increases. Cutting depth influences the metal removal rate, the number of cuts, chip evacuation efficiency, and power required when using the insert. Indexable inserts are small cutting tools designed to remove material in external and internal cutting applications such as turning, milling, drilling, and grooving. They are held by an insert holder, have multiple cutting edges, and can be rotated when one edge wears down. Multiple inserts can accomplish a variety of cuts in one operation. An insert is either positive or negative, which refers to the rake or clearance angle at which the insert removes material. Sandvik Coromant produces tools for turning, milling, and drilling. Headquartered in Sweden and represented in 130 countries, the company manufactures tools used throughout the metalworking field, including the automotive and aerospace, die and mold, and general engineering industries. Matching Inserts to Holders These inserts are used with the Sandvik Coromant CoroMill 390, a screw-style insert holding system. This system is used for square shoulder milling and slotting. When used with the CoroMill 390, the insert has a 90-degree entering angle and 0-degree lead angle.
