65-Degree Straight Shank Tungsten Steel End Mill (4-Flute High-Hardness Alloy CNC Tool)

65-Degree Straight Shank Tungsten Steel End Mill (4-Flute High-Hardness Alloy CNC Tool)

I. Role in CNC Machining

1.Efficient Precision Machinin： This tool is specifically designed for high-hardness materials (such as hardened steel, stainless steel, titanium alloys, high-temperature alloys, etc.), suitable for complex profile milling, deep groove machining, side finishing, and mold cavity machining on CNC machines, significantly improving machining efficiency and surface finish.

2.Versatility and Compatibility： With its straight shank structure and standardized dimensions (such as common specifications of φ4-φ20mm), it is compatible with most CNC machines (such as machining centers and engraving mills) with ER spring collets or hydraulic tool holders, meeting multi-scenario machining needs and reducing tool change frequency.

3.High Stability Cutting： The four-flute design provides balanced cutting force distribution during high-speed cutting (with speeds up to 8000-15000 RPM), reducing vibration, ensuring machining accuracy, and being particularly suitable for automated production lines requiring long-term continuous operation.

II. Core Advantages and Features

1.Material and Process Advantages

High-Hardness Alloy Substrate: Made of tungsten-cobalt (YG) alloy, with a hardness of over HRA90, high flexural strength, excellent wear resistance, and a lifespan extended by 3-5 times compared to ordinary high-speed steel tools.

65-Degree Helix Angle Design: Optimizes chip evacuation, reduces cutting resistance, and minimizes workpiece burrs, suitable for high feed rate (F value) machining.

2.Four-Flute Structure Design

Multi-Flute High-Efficiency Cutting: Compared to two-flute tools, the four-flute design increases feed speed by 30%-50% at the same rotation speed, reducing single-flute load and extending tool life.

Edge Reinforcement Treatment: Nano-coatings (such as TiAlN/AlCrN) enhance edge heat resistance (withstanding temperatures up to 1000°C), suitable for dry or minimal lubrication machining.

3.Straight Shank Rigidity Enhancement

High-Rigidity Clamping: The straight shank structure (such as DIN 6535 standard) ensures clamping concentricity, preventing radial runout (≤0.01mm) during high-speed rotation and ensuring machining dimensional consistency.

Compatibility with High-Speed Spindles: Lightweight design (such as short-neck type) reduces centrifugal force impact, matching the requirements of CNC machines' high-speed electric spindles (≥20000 RPM).

4.Economic and Compatibility Advantages

Versatility Across Multiple Materials: Capable of machining a range from aluminum alloys to hardened steels above HRC55, reducing the variety of tool stock for enterprises.

Low-Cost Maintenance: Re-grindable (3-4 times), reducing single machining costs by over 40%.

III. Typical Application Scenarios：

1.Mold Manufacturing: Cavity milling and corner cleaning of precision plastic molds and die-casting molds.

2.Aerospace: Efficient rough and semi-finish machining of titanium alloy structural parts.

3.Automotive Parts: Deep groove and curved surface machining of gearbox housings and engine blocks.

Summary The special 65-degree four-flute straight shank end mill, with its high-hardness tungsten steel substrate, multi-flute high-efficiency cutting, and general adaptability, has become the preferred tool in CNC machining for balancing efficiency, precision, and cost-effectiveness. It is especially suitable for high-hardness materials in mass production or highly complex part manufacturing. The combination of coating technology and geometric angles further enhances reliability under high-speed, high-temperature conditions, helping enterprises reduce costs and increase efficiency.