In order to address the leakage issues commonly found in pipe thread fittings used within the oil and gas industry—especially when using conventional machine taps or other traditional threading methods—Emuge has developed two innovative solutions: a solid carbide thread milling cutter and an indexable insert thread milling cutter. These tools are specifically designed to improve efficiency, accuracy, and tool life in the machining of NPT/API threads. The solid carbide thread milling cutter features a spiral groove design, making it ideal for machining NPT/API threads with diameters ranging from 0.125′′ to 2′′ (3 to 50mm). On the other hand, the indexable insert thread milling cutter, which uses an incomplete profile, is suitable for larger diameter threads, covering sizes from 1′′ to 20′′ (25 to 500mm). These new tools significantly expand the capabilities of Emuge’s Thread-Max and Threads-All threading systems, offering greater flexibility and precision in challenging applications. The solid carbide thread milling cutters are manufactured using micro-grained carbide grades combined with TiCN coatings, which enhance durability and extend tool life. The multi-spiral groove design helps eliminate vibration during machining, ensuring smoother operation. Additionally, the design integrates large tool diameters with precise thread profile corrections, allowing for high-accuracy threading and enabling longer thread lengths, especially for API pipe threading requirements. For the indexable insert thread milling cutters used in tapered thread machining, Emuge offers hardened steel bodies with Weldon-style shanks that can be CNC ground or CAT50 shanks with three different stem sizes. These tools feature internal cooling systems that deliver coolant radially from the cutting edge, improving chip evacuation and cooling performance, which ultimately enhances thread quality and extends tool life. The inserts themselves are made from fine-grain cemented carbide and come with either TiN or TiAlN coatings for added wear resistance. The blade design includes optimized front and back angles, allowing it to handle heavy chip loads while maintaining stability. The shape of the insert also promotes free cutting, reduces radial cutting forces, and ensures accurate thread formation. Each insert is equipped with four usable cutting edges, maximizing tool life and reducing downtime. Finally, the tool holders are precisely machined on the steel end face of the tool body, ensuring accurate blade positioning and consistent performance throughout the machining process. This attention to detail makes these tools particularly well-suited for demanding environments where reliability and precision are critical.

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