Producing threads in hardened steel is costly. This applies to blind hole machining in particular because reversing the tap during this process can cause torque peaks when the root of the chip is sheared off, resulting in fractures.
Walter is solving this problem with two new taps – offering its customers a full product range for producing threads in hardened steels with an additional thread milling cutter:
The TC388 Supreme (50–58 HRC) or TC389 Supreme (55–65 HRC) and the TC685 Supreme (> 44 HRC). The TC388 and TC389 Supreme solid carbide taps boast special cutting geometries. These fully shear off the root of the chip when reversing; torque peaks are minimised. This prevents fractures, prolongs the tool life and increases process reliability.
Lubrication with oil, which was often necessary until now, is no longer required. Instead, emulsion can be used, which optimises handling and saves additional machining time. Both taps are characterised by a short machining time.