DLC Coated End Mills

Why choose Us Wide Range of Applications Our company mainly produces solid carbide milling cutters, drill bits, engraving tools, and various non-standard tools. Products are widely used in mold, aviation, electronics, advertising, home furnishing and other industries.

Send Inquiry

Product Introduction

Why choose Us

Wide Range of Applications

Our company mainly produces solid carbide milling cutters, drill bits, engraving tools, and various non-standard tools. Products are widely used in mold, aviation, electronics, advertising, home furnishing and other industries.

One-Stop Service

We provide one-stop service from design, manufacturing to delivery. At the same time, in order to meet the needs of different customers, the company's professional technical staff will provide customers with customized services.

Advanced Technical Equipment

The company gives priority to the introduction of advanced manufacturing and monitoring equipment, such as the Swiss WALTER CNC milling cutter grinder and the German EOUER tool testing equipment, which greatly improves the company's manufacturing capabilities and product quality.

Recognition from Global Customers

After years of development, the GR8 brand has successfully expanded into markets in more than 50 countries including Japan, Australia, Asia, the Middle East, Europe, and the Americas, and has been recognized by more and more customers.

45HRC 4 Flutes Flat End Mill

This 45HRC 4 flutes flat end mill is made of high quality carbide with excellent hardness, toughness and wear resistance for long service life. It has a Rockwell hardness scale of at least 45HRC.

55HRC 4 Flutes Flat End Mill

It has a high hardness of 55HRC, which makes it suitable for cutting a variety of materials, including stainless steel, alloy steel, cast iron and copper.

65HRC 4 Flutes Flat End Mill

The overall hard high-speed steel material can effectively prevent the grain boundary separation of the cutting edge, and at the same time extend the service life of the cutting tool.

2 Flutes DLC Milling Drills

The milling cutter provides various coating options, including titanium nitride (TiN), titanium carbonitride (TiCN), titanium aluminum nitride (TiAlN or AlTiN) and diamond veneer.

DLC Coated End Mills

In the electronic industry, the processing of non-ferrous metal materials is very common, and the milling cutter can be used to manufacture shells and radiators of electronic components.

1 Flutes Aluminum Processing End Mill

The milling cutter has excellent chip removal performance, and the chips generated in the cutting process can be quickly discharged to avoid cutting interruption.

3 Flutes Aluminum Processing End Mill

The high efficiency and stability of this tool make it very useful in mold manufacturing, which can efficiently cut mold materials and provide support for mold manufacturing.

U Slot End Mill without Caoting for Aluminum

The cutter adopts integral cemented carbide structure, has been carefully designed, has special U-shaped bit and wear-resistant characteristics, and has performed well in various milling applications.

DLC Coating U Slot End Mill for Aluminum

This DLC Coating U Slot End Mill for Aluminum is specially designed for aluminum processing, with unique structure, DLC coating and innovative design.

What is DLC coating on End Mills?

DLC is a unique thin coating composed mainly of carbon that features a high level of hardness, superior friction/wear properties and excellent adhesion resistance. While working with aluminum creates some machining challenges, the positive properties of the material offset some of these difficulties.

Diamond-like carbon (DLC) film is a kind of metastable material technology, formed by the combination of sp3 and sp2 bonds, which is widely used abroad in recent years. It combines the excellent characteristics of diamond and graphite, not only has higher hardness but also higher resistivity. Meantime, it has good optical properties and excellent tribological properties.

Tolerances of DLC Coated End Mills

Flute Diameter	Flute Diameter Tolerance	Shank Diameter Tolerance
Φ1.0-Φ2.9	0～-0.02
Φ3-Φ6	-0.01～-0.03	H6
Φ6-Φ10	-0.01～-0.035
Φ10.0-Φ18.0	-0.01～-0.04
Φ18.0-Φ20.0	-0.015～-0.045

The Function of DLC Coating

Good self-lubricity and surface hardness significantly improve the wear resistance of milling cutters.

Realizing dry processing of aluminum alloy parts.

It has a special U-shaped groove design, which makes chip evacuation smoother and achieve high-efficiency processing. Besides, we made the double cutting edges, it has more cutting depth and width.

The edge design of end mill is optimized to give the workpiece a good mirror finish.

It is for slotting, groove milling with dry and wet processing.

Different Types of DLC Coated End Mills

Square End Mills: These end mills have a square tip and are used for general milling applications. They are great for creating square bottomed slots and pockets, and for cutting flat surfaces.

Ball End Mills: These end mills have a rounded tip and are used for milling curved surfaces. They are great for creating rounded edges and for making 3D shapes.

Corner Radius End Mills: These end mills have a rounded corner on the tip and are used for milling rounded corners. They are great for creating fillets and for making parts with rounded edges.

Chamfer End Mills: These end mills have a flat tip with angled sides and are used for creating chamfers or beveled edges. They are great for creating angled edges on parts and for creating a finished edge on a part.

Roughing End Mills: These end mills have a serrated or scalloped edge and are used for removing large amounts of material quickly. They are great for roughing out parts and for creating a rough finish on a part.

Tapered End Mills: These end mills have a tapered tip and are used for creating tapered holes or channels. They are great for creating parts with a conical shape.

Drill Mills: These end mills are designed to drill holes and mill flat surfaces at the same time. They are great for creating holes with flat bottoms and for making counterbores.

Flute Count of DLC Coated End Mills

Flute End Mill

When milling grooves or slots, end mills with two flutes are the most frequent type of milling tool utilized. Because it may drive in a vertical direction into the workpiece, this particular type of mill is often referred to as a plunge mill. Two blades with different cutting lengths are attached to the cutting end of the bit. One of them travels right across the center, which enables the end mill to cut directly into the workpiece that lies beneath it.

Flute End Mill

Surface milling and side milling are the two most typical uses for a 4-flute mill, despite the fact that this type of mill is capable of producing the same outcomes as a 2-flute mill, such as the creation of pockets and slots. End mills with four flutes are required for use in all steps of the end milling process. End mills with four flutes that are designed for use with steels, tool steels, and cast iron.

Flute End Mill

End mills for steels that contain six flutes, each of which is designed to have a longer useful life in the particular CNC machining applications in which they are employed, including high-efficiency milling. For finishing operations that need increased feed rates in addition to a high quality surface finish, end mills with six flutes are the tool of choice because of their versatility.

Factors to Consider When Choosing Flute Count

Material Type

Softer materials like aluminum, wood, and plastics benefit from fewer flutes, as they generate larger chips and offer better chip evacuation. On the other hand, harder materials like steel, cast iron, and high-temp alloys require more flutes for increased strength and wear resistance.

Machining Operation

The machining operation, whether roughing or finishing, also influences the choice of flute count. As we've seen earlier, lower flute counts are more suitable for roughing operations, offering efficient chip removal and faster material removal rates. Conversely, higher flute counts are recommended for finishing operations, providing smoother finishes and reduced cutting forces.

Tool Life and Performance

Tool life and performance are also affected by flute count. Higher flute counts offer longer tool life and better performance in certain materials and applications, such as when working with harder materials like steel or cast iron.

Precautions for Using DLC Coated End Mills

During use, it is necessary to prevent the end mill from gradually protruding from the tool holder or even completely falling off. Therefore, before use, check whether there is an oil film between the inner hole of the tool holder and the outer diameter of the end mill shank to avoid insufficient clamping force.

When the DLC coated end mills are cut, the parameter selection is very important. The cutting speed is selected according to the different workpieces to be processed including their materials. The material of the machined workpiece and the diameter of the end mill determine the feed rate.

When choosing the cutting method, down milling is preferred, which can protect the cutting edge and improve the service life of the cutting tool.

Although the DLC coated end mill has strong wear resistance, its scope of application is relatively narrow and the requirements are high, so it must be operated in strict accordance with the requirements.

Our factory

Introducing the most advanced production technology and the most advanced CNC tool production equipment at home and abroad, we use our process optimization methods to improve production quality, reduce costs and increase productivity.

productcate-1220-1222

productcate-1220-585

productcate-1220-382

Our certificates

We have passed ISO 9001 quality management certification and obtained various qualification certificates, and are committed to providing customers with high-quality products.

Frequently Asked Questions

Q: What are 4 flute end mills used for?

A: End mills with four flutes have a strong resistance to heat and are often used for high-speed cutting of hardened materials such as iron, alloys, and other similar substances. This is because these end mills have the ability to cut more efficiently through the material's microstructure.

Q: Is a 2 or 4 flute end mill for steel?

A: Meanwhile, 4-flute end mills have been preferred when machining steel and similarly hard alloys since they have more cutting surfaces to contact the part per rotation. Since such harder metals require a slower feed, using end mills with 4 or more flutes serves to increase the rate of metal removal.

Q: What is the difference between ball nose and end mills?

A: Flat End Mills get their name from having a flat bottom all the way across, which then comes at 90 degrees onto our sides. Ball Nose Mills have a radius, a hemisphere, or half of a ball (which is where it gets its name from) to give it a rounded end instead. Now there is a type of tool that lies somewhere between these two, which can be called a Bull Nose Mill or a Tip Radius End Mill, which has a partly flat bottom with a radius just around the edges.

Q: Is DLC better than PVD?

A: The DLC is made similar to synthetic diamonds - by blasting carbon particles onto the watches' metal surface - which gives it significantly harder and more resistant protective layer than in case of PVD.

Q: Can I use a 2 flute end mill for steel?

A: Traditionally, end mills came in either a 2 flute or 4 flute option. The widely accepted rule of thumb was to use 2 flutes for machining aluminum and non-ferrous materials, and 4 flutes for machining steel and harder alloys. As aluminum and non-ferrous alloys are typically much softer than steels, a tool's strength is less of a concern, a tool can be fed faster, and larger material removal rates (MRR) is facilitated by the large flute valleys of 2 flute tools.

Q: What are 7 flute end mills used for?

A: End mills with higher counts of 5, 6, and 7 flutes are increasingly being used to cut harder materials, as a higher flute count allows for a tool with more strength and less wear, resulting in longer tool life. High flute counts can also be beneficial in specialty applications when dealing with certain kinds of ferrous materials, such as titanium and inconel, for example.

Q: Which is better cobalt or HSS end mills?

A: Cobalt (M-42: 8% Cobalt): Provides better wear resistance, higher hot hardness and toughness than high speed steel (HSS). There is very little chipping or microchipping under severe cutting conditions, allowing the tool to run 10% faster than HSS, resulting in excellent metal removal rates and good finishes.

Q: What are 5 flute end mills used for?

A: 5 flute end mills allow for advanced roughing with long axial depths of cut and shallow radial depths at extremely fast feed rates, as well as fine surface finishing applications with faster feed rates. All that productivity with one tool reduces tooling inventories and job costs while adding versatility.

Q: How do I know what end mill to use?

A: The material being milled is a critical factor in determining the type of end mill to use. Harder materials, such as metals and alloys, require a harder and more durable end mill, such as carbide, while softer materials, such as plastics and wood, require a softer end mill, such as high-speed steel. The number of flutes on an end mill affects its cutting performance.

Q: What are the most used end mills?

A: Square end mills are the most common ones and can be used for many milling applications, including slotting, profiling and plunge cutting. Corner-radius end mills have slightly rounded corners that help distribute cutting forces evenly to prevent damage to the end mill and extend its life.

Q: What are the disadvantages of DLC coating?

A: DLC coatings have thermal stability up to ~300°C, chemically inert, biocompatible, and oxidation resistant. However, along with the said benefits, the DLC coatings have high residual stresses and lower toughness that limit their use for wide range of applications, especially when it comes to mechanical performance.

Q: Why use a single flute end mill?

A: Single-flute end mills are ideal for high-speed machining operations and capable of cutting a variety of materials, including aluminum, brass, copper, and engineering plastics. The single-flute geometry offers more space for chip evacuation and this enables machinists to program faster feed rates and higher chip loads.

Q: What is a 0 flute end mill?

A: "O" flute tools are manufactured from micro grain solid carbide tool material in straight and spiral configuration. The upcut, or right hand spiral is most readily utilized because of the need to evacuate chip in an upward direction in flat sheet or block applications. Upward movement of chips avoids welding, which is a common problem in the machining of plastic.

Q: Can you plunge cut with a 4 flute end mill?

A: Tool Design: Some 4 flute end mills are designed with a center cutting geometry, allowing for plunging. However, others might be non-center cutting, which makes plunging difficult. As mentioned, the type of material being milled can influence the choice of end mill. When plunging into harder materials, a 4-flute end mill might be preferable because it offers more cutting edges, ensuring a cleaner and more precise plunge.

Q: What is a 3 flute end mill used for?

A: Three flute end mills are used for higher feed rates than two flute end mills, and are often used in aluminum machining. They are commonly used in grooving operations where the chip is crowded. They are also used in non-ferrous milling applications where high feed rates are used.

Q: What is the difference between 2 and 4 flute end mill?

A: The main difference is two flute cutters are used more in softer materials like aluminum and brass. Not to say they can't be used in harder materials, it just they don't hold up as long. Two flute cutters have a lot more chip ejection clearance in the center where the other two flutes would be if it were a four flute.

Q: What is the hardest drill bit?

A: When drilling through hardened steel, you must ensure that your drill bit is made from tougher materials. Carbide bits are the strongest drill bits material and can cut through hardened steel. But if they are not available, titanium and cobalt drill bits can also be used.

Q: What is the difference between single flute and 3 flute end mills?

A: The single flutes can clear chips from stringy sticky aluminum. They also reduce recutting of chips and evacuate the chips faster, which improves surface finish by reducing the likelihood that chips already cut will scratch the workpiece. Three flutes are a performance-enhancing alternative to 2 flute end mills. Their extra flute gives them a faster feed rate for a given surface speed. They're ideal for aluminum roughing applications.

Q: What is the difference between single and double flute end mills?

A: For instance, a single-fluted end mill would have a single cutting edge, whereas a two-flute mill would have two, and so on. The number of flutes an end mill has determines its rigidity, chip evacuation capacity, wear time, vertical accuracy, and performance on both soft and hard materials.

Q: What is a 6 flute end mill used for?

A: A standard length, six fluted, square end mill is a general purpose mill, with a regular flute length, six cutting edges, and the corners are sharp and generate a 90° corner. They can be used for plunging, grooving, side milling, face milling, and counter boring.

Hot Tags: dlc coated end mills, China dlc coated end mills manufacturers, suppliers, factory, end mills for composites, down cut milling, jet power end mill, 1 inch end mill, 3d cnc wood milling machine, spiral flute drill bit

No Information

DLC Coating U Slot End Mill for Aluminum