Threading Tools for Nickel-Based Alloys

Emuge offers a comprehensive line of high-performance tools for threading nickel and super-alloy materials ranging to 46 HRc. The program includes taps with new geometry designs as well as solid carbide thread mills suitable for aerospace, power generation and oil industry applications. Sizes ranging from No. 4 to ³/₄" in UNC, UNF and metric varieties are available.

The nickel alloy program includes DF-NI and C-NI taps. With Emuge’s variable helix correction (VHC) technology, the DF-NI taps feature a ground relief geometry in the primary cutting zone that generates a smaller and tightly rolled chip formation for improved chip control to prevent damage caused by chips jamming in the tap teeth, the company says. With a 10-degree right-hand spiral flute, VHC taps are also available in STI thread sizes for jet engine components. C-NI taps offer a left-hand helical flute form with rake and relief designed to optimize chip evacuation in the forward direction and add strength to the cutting teeth for improved tool life and process security.

Both taps feature relief geometry in the chamfer and thread section designed to help overcome the high hardness and elastic memory of precipitation-hardened nickel alloys. Taps are made of HSS-E and TiCN coated for heat and wear resistance. Modified bottoming chamfer (2-3 threads on VHC taps) reduces torque and increases tool life.

Also included in the program are Rekord KEG-NI-style taps with VHC for tapping NPT and NPTF taper pipe threads in nickel-based super alloys, as well as Threads-All Z-GF-style and Shur-Thread GFI-IKZ thread mills.