Industry Context & Processing Challenges: Nuclear reactor pressure vessel tube sheets and steam generator baffle plates consist of thick forged low-alloy steel plates clad with stainless steel, requiring tens of thousands of deep, high-precision tube penetrations. Maintaining absolute hole straightness, wall finish, and zero drill drift across thick plates is critical for nuclear safety.
Technical Requirements: Deep hole straightness within ≤0.05 mm over 20xD depth, smooth internal bore surface (Ra<0.4 μm), and zero hole drift.
ZWH Tooling Solutions & Value: ZWH high-performance solid carbide deep-hole drills (15xD to 30xD) feature four-guide-land designs, polished flutes, and dual internal coolant channels. These features ensure precise hole self-centering, continuous chip evacuation without packing, and consistent hole alignment, ensuring drill longevity across multi-thousand hole drilling cycles.
