4-flute flat-end milling cutter for materials with HRC50 hardness

(Suitable for alloy steel / hardened steel / cast iron ≤HRC50 600)

In actual metalworking production, tools that are stable, sharp, and long-lasting can significantly improve machining efficiency, reduce scrap rates, and maintain consistent part quality.

For machining requirements involving materials with angles of 50 degrees or less, Lizhou Cemented Carbide has launched the 50-degree product. 4-flute flat-end milling cutter Provided the workshop with a cutting tool that is truly “durable, reliable, and easy to use.”

I. Optimized for HRC50-grade materials

“50 degrees” does not refer to the blade angle; rather, it indicates the maximum hardness rating (≤HRC50) of the materials that the blade can process.

Materials such as alloy steel, hardened steel, and cast iron 600 have high hardness, placing even stricter demands on tool wear resistance and cutting edge strength. For this model of vertical milling cutter, Lizhou has selected a highly stable carbide material and rigorously controls the entire process—from powder preparation through sintering to final coating and shaping—ensuring that the tool exhibits superior chipping resistance and thermal stability during machining.

In batch machining, tool life and stability directly determine costs and cycle times. This 4-flute end mill from Lizhou is specifically designed for long-term stable cutting, reducing the number of tool changes and improving machine utilization.

2. Four-blade cutter head + double-edged band structure for smoother cutting.

Conventional end mills tend to experience issues such as vibration, chipping, and unstable surface roughness when machining hard materials. To address these pain points, we have adopted:

Four-blade cutter design: Compared to two-blade and three-blade tools, the four-blade design features more cutting edges, enabling it to remove a greater volume of material per unit of time and thus improving efficiency.

Double-edged blade structure: Enhances tool guidance, ensuring greater stability during machining and effectively reducing vibrations.

Sharpness optimization treatment for the cutting edge: Enables smoother tool entry into the material, making it ideal for high-speed cutting.

The combination of LiZhou’s designs gives the cutting tools enhanced rigidity and superior surface finish, making them particularly well-suited for machining parts that demand high dimensional accuracy and surface quality.

3. Flat-blade design with a wide range of applications.

This tool features a standard flat-head (flat-bottom) design, offering high versatility and capable of meeting the requirements of various machining applications, including:

Side machining: Ensure consistent and stable straightness and surface roughness.

Step machining: The cutting tool has high strength and is resistant to chipping.

Right-angle groove machining: Accurate bottom shaping, smooth groove bottom.

General cavity machining: Suitable for various common mold structures.

For companies engaged in the mass production of parts, this is a highly versatile tool that can significantly reduce the number of inventory models and improve machining efficiency.

4. Strictly control every process to create truly reliable cutting tools.

Lizhou Cemented Carbide consistently adheres to the philosophy of “comprehensive quality control across the entire process—from materials to tools.”

Stable material selection: High-quality carbide substrate with high flexural strength and enhanced wear resistance.

Precision grinding process: Utilizing a five-axis tool grinder to ensure uniformity and consistency in cutting edge angles, cutting edge widths, and spiral line patterns.

Advanced coating technology: Further enhances wear resistance and heat resistance, extending tool life.

Strict inspection process: The blade edges are examined under a microscope to ensure that every batch of tools meets the machining standards.

Every tool undergoes a full inspection before leaving the factory, ensuring that the products delivered to customers can be directly put into the production line.

5. Complete range of specifications, supports non-standard customization.

To accommodate different machine tools and various machining scenarios, we offer:

Standard specifications in multiple sizes, lengths, and diameters

We support customers in providing drawings for non-standard customization.

Supports batch OEM/ODM

Whether you're machining mold components, mechanical parts, or mass-produced items, Lizhou Cemented Carbide has the right solution for you. If your workpieces are special—such as those requiring deep-slot machining or long overhang machining—we can also provide expert advice and customized services.

Six Major Features of Choosing a Vertical Milling Cutter

When selecting cutting tools, many machining plants often encounter the following dilemmas: Why do cutting tools with identical parameters have vastly different tool lives? Why is the machined surface rough? Why are cutting tools prone to breakage?
In fact, the key factors affecting tool quality lie in the following points:

Is the substrate stable?
A substrate with unstable quality can lead to high blade brittleness and poor wear resistance. Lizhou uses stable cemented carbide, offering more reliable performance.

Is the blade edge finely finished?
High-precision grinding can reduce cutting resistance, improve heat generation, and extend service life.

Is the coating uniform?
The coating not only affects wear resistance but also influences the smoothness of cutting—this is especially important when machining hard materials.

Is the tool suitable for machining the material?
Each material corresponds to a different cutting edge angle, flute geometry, and number of blades design. Our 4-blade cutter is specially designed for materials with an hardness of ≤HRC50, better matching your needs.

When you use the right cutting tools, not only can you improve machining efficiency, but you can also reduce toolpath adjustments and minimize scrap parts, making production more stable.

7. Born for Efficiency—Making Processing Easier

If you're looking for a tool that boasts long tool life, high stability, excellent chipping resistance, high surface finish, and is suitable for machining hard materials.

Then this 50-degree, 4-flute flat-end milling cutter is sure to become your excellent machining assistant.

Lizhou Tools boasts many years of experience in cemented carbide production. Through rigorous process management and continuous technological optimization, we ensure that every tool delivers maximum value in real-world machining applications. We not only provide products but also offer solutions designed to help you enhance your machining efficiency.