High-Precision 55 Degree Helix Angle Solid Carbide End Mill with Deep Hook Design for Micro-Diameter Milling

Product Overview

Small Dia of Deep hook flat End mill : small-diameter, long-reach (deep hook/pocket) coated solid carbide flat-bottom end mill (commonly referred to as a micro-diameter long-neck flat end mill). It represents a high-end cutting solution in the fields of precision micro-machining and mold manufacturing, purpose-built to tackle high-aspect-ratio workpiece features such as deep narrow slots, steep vertical shoulders, and deep-seated blind cavities.

Key Features & Advantages

Micro-Diameter Cutting Geometry: Featuring an ultra-small cutting diameter, this tool is perfectly capable of handling intricate engraving, high-precision narrow slotting, and miniature electronics component milling.

Tapered Long-Neck Configuration: Engineered with an extended neck clearance that progressively thickens towards the shank (reinforced tapered neck structure). This layout allows the tool to submerge safely into narrow, deep cavities to avoid shank-workpiece collision while retaining maximum base rigidity.

Superior Rigidity & Anti-Chipping Design: Manufactured from premium micrograin or ultra-fine grain solid carbide (tungsten steel). To eliminate tool deflection ("tool push") and premature breakage common to long-reach micro-tools, the core web thickness and neck taper are strictly optimized to suppress vibration and chatter.

Advanced Nano-Composite Coating: The cutting zone and neck are protected by a premium bronze/copper-colored thermal-barrier coating (such as TiAlN/AlTiN nano-composite). This coating provides exceptional red-hardness and a low friction coefficient, shielding the miniature cutting edge from severe thermal wear during high-speed, dry-milling cycles.

Precision-Ground Helical Flutes: The flute profiles are meticulously ground to ensure a smooth finish. This facilitates rapid and unobstructed evacuation of microscopic chips from deep-seated channels, preventing chip re-cutting and ensuring an ultra-smooth workpiece surface.

Typical Applications

Machining Operations: Deep cavity side-milling and bottom-finishing alongside steep vertical walls, deep slotting (deep hook applications), 3D micro-milling for electromechanical components, and deep-set counterbore cleaning.

Applicable Materials: Benefiting from the premium carbide substrate and advanced coating synergy, it is highly optimized for:

Mold Steels, Pre-Hardened Steels, and High-Hardness Quenched Steels (Capable of machining materials up to HRC 55-65)

Stainless Steels, Alloy Steels, and Carbon Steels

High-precision hardware components and difficult-to-machine heat-resistant alloys.

         Zhuzhou Delong Metal Material Processing Co., Ltd. was established in 2018 and is located in Zhuzhou City, Hunan Province, China's largest hard alloy production base. We are a high-tech enterprise specializing in metal material processing and manufacturing, committed to providing customers with high-quality metal material processing solutions. We have a modern factory building of 20000 square meters, sophisticated equipment and personnel, and a complete quality control process. Our products mainly include high-performance milling, turning, drilling and other standard and non-standard CNC cutting tools.