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Insert Grade Excels in Turning Uneven Forged Surfaces

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Sandvik Coromant has introduced its GC4335 insert grade for the turning of steels where unstable conditions or vibration issues prevail. The grade is designed to provide secure and predictable machining as well as shorter cycle times and better machine utilization through reduced stoppages and longer insert life. Customers will benefit from an improved process with less risk of insert breakage as well as reduced cost per component and faster return on investment, the company says. The grade is said to be particularly good for uneven forged surfaces, the turning of which can lead to frequent insert changes due to fatigue and failure.

GC4335, which features Inveio coating technology for maximum thermal protection, offers greater steel turning endurance through improved edge-line security in comparison with the previous generation of grades, along with greater resistance to flank wear, plastic deformation and crater wear.

The introduction of GC4335 will benefit general engineering shops as well as automotive OEMs and tier suppliers and subcontractors in the oil and gas sector, the company says. Typical components include tubes, valves, crankshafts, differential housings, flanges and rings.

The grade’s new substrate balances reliable toughness and resistance to plastic deformation. In addition, a new alumina coating delivers efficient heat transfer from the cutting zone to act as a heat barrier, and the columnar MT-TiCN inner coating offers improved resistance against abrasive wear. A yellow TiN coating on the insert flank eases wear detection.

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