Knowledge How are Tools Coated with Diamond? 5 Key Steps Explained
Author avatar

Tech Team · Kintek Solution

Updated 2 months ago

How are Tools Coated with Diamond? 5 Key Steps Explained

Coating tools with diamond is a sophisticated process that significantly enhances the durability and performance of cutting tools.

5 Key Steps Explained

How are Tools Coated with Diamond? 5 Key Steps Explained

1. Preparation of Tools for Diamond Coating

Before the coating process, tungsten-carbide tools undergo thorough cleaning and a two-step chemical preparation.

The first step involves roughening the carbide surface to improve mechanical adhesion of the diamond layer.

This is crucial as it ensures that the diamond coating adheres well to the tool surface, preventing it from peeling off during use.

The second step is the removal of cobalt from the surface of the carbide, as cobalt is detrimental to diamond growth.

This step is essential because cobalt, which is often used as a binder in tungsten-carbide, can inhibit the formation of diamond during the CVD process.

2. Diamond Coating Process

The actual diamond coating is achieved through various CVD methods, including Microwave Plasma CVD (MPCVD), DC Arc Plasma Spray CVD (DAPCVD), and Hot Wire CVD (HFCVD).

Among these, HFCVD is particularly favored in industrial settings due to its relatively low cost and ability to achieve uniform deposition over large areas.

In the HFCVD process, a low-pressure gas phase reaction occurs at high temperatures.

Methane (CH4), used as a carbon source, reacts with hydrogen in the presence of a hot filament to generate diamond film precursors.

These precursors are then deposited onto the prepared tool surface, forming a dense and uniform diamond layer.

3. Characteristics and Advantages of Diamond-Coated Tools

Diamond-coated tools, with a typical coating thickness of 10-30μm, offer significant advantages over uncoated tools.

They are highly resistant to wear and capable of maintaining sharpness, making them ideal for cutting difficult-to-machine materials such as graphite and high-silicon aluminum alloys.

The production cycle for these tools is relatively short, and the cost of preparation is moderate, especially compared to the benefits of increased tool life and performance.

4. Application and Limitations

While diamond-coated tools can be applied to a wide range of tool sizes and shapes, there are practical limits.

For instance, tools with diameters greater than 0.500″ (12.70mm) may not be as cost-effective to coat with diamond, as other types of tooling might be more suitable.

Additionally, the complexity of tool shapes that can be effectively coated with diamond is limited, which can restrict their application in certain manufacturing processes.

5. Summary

In summary, the coating of tools with diamond is a sophisticated process that significantly enhances the durability and performance of cutting tools.

The use of CVD, particularly HFCVD, allows for the efficient and effective deposition of diamond layers onto tools, making them indispensable in industries requiring precision and durability in machining operations.

Continue exploring, consult our experts

Discover the ultimate edge in precision machining with KINTEK SOLUTION’s innovative diamond-coated tools.

Experience the unparalleled wear resistance and sharpness that our CVD-coating process, like the highly effective Hot Wire CVD (HFCVD) method, brings to tungsten-carbide tools.

Elevate your manufacturing operations and maximize your tool life—contact KINTEK SOLUTION today to revolutionize your cutting capabilities!

Related Products

CVD Diamond coating

CVD Diamond coating

CVD Diamond Coating: Superior Thermal Conductivity, Crystal Quality, and Adhesion for Cutting Tools, Friction, and Acoustic Applications

Cutting Tool Blanks

Cutting Tool Blanks

CVD Diamond Cutting Tools: Superior Wear Resistance, Low Friction, High Thermal Conductivity for Non-Ferrous Materials, Ceramics, Composites Machining

CVD boron doped diamond

CVD boron doped diamond

CVD boron-doped diamond: A versatile material enabling tailored electrical conductivity, optical transparency, and exceptional thermal properties for applications in electronics, optics, sensing, and quantum technologies.

CVD Diamond for dressing tools

CVD Diamond for dressing tools

Experience the Unbeatable Performance of CVD Diamond Dresser Blanks: High Thermal Conductivity, Exceptional Wear Resistance, and Orientation Independence.

Plasma enhanced evaporation deposition PECVD coating machine

Plasma enhanced evaporation deposition PECVD coating machine

Upgrade your coating process with PECVD coating equipment. Ideal for LED, power semiconductors, MEMS and more. Deposits high-quality solid films at low temps.

Drawing die nano-diamond coating HFCVD Equipment

Drawing die nano-diamond coating HFCVD Equipment

The nano-diamond composite coating drawing die uses cemented carbide (WC-Co) as the substrate, and uses the chemical vapor phase method ( CVD method for short ) to coat the conventional diamond and nano-diamond composite coating on the surface of the inner hole of the mold.

Cylindrical Resonator MPCVD Diamond Machine for lab diamond growth

Cylindrical Resonator MPCVD Diamond Machine for lab diamond growth

Learn about Cylindrical Resonator MPCVD Machine, the microwave plasma chemical vapor deposition method used for growing diamond gemstones and films in the jewelry and semi-conductor industries. Discover its cost-effective advantages over traditional HPHT methods.

High precision diamond wire cutting machine

High precision diamond wire cutting machine

The high precision diamond wire cutting machine is a versatile and precise cutting tool designed specifically for material researchers. It utilizes a continuous diamond wire cutting mechanism, enabling precise cutting of brittle materials such as ceramics, crystals, glass, metals, rocks, and various other materials.

Workbench 800mm * 800mm diamond single wire circular small cutting machine

Workbench 800mm * 800mm diamond single wire circular small cutting machine

Diamond wire cutting machines are mainly used for precision cutting of ceramics, crystals, glass, metals, rocks, thermoelectric materials, infrared optical materials, composite materials, biomedical materials and other material analysis samples. Especially suitable for precision cutting of ultra-thin plates with thickness up to 0.2mm.

12 inch/24 inch high precision automatic diamond wire cutting machine

12 inch/24 inch high precision automatic diamond wire cutting machine

The high precision automatic diamond wire cutting machine is a versatile cutting tool that uses a diamond wire to cut through a wide range of materials, including conductive and non-conductive materials, ceramics, glass, rocks, gems, jade, meteorites, monocrystalline silicon, silicon carbide, polycrystalline silicon, refractory bricks, epoxy boards, and ferrite bodies. It is especially suitable for cutting various brittle crystals with high hardness, high value, and easy to break.

915MHz MPCVD Diamond Machine

915MHz MPCVD Diamond Machine

915MHz MPCVD Diamond Machine and its multi-crystal effective growth, the maximum area can reach 8 inches, the maximum effective growth area of single crystal can reach 5 inches. This equipment is mainly used for the production of large-size polycrystalline diamond films, the growth of long single crystal diamonds, the low-temperature growth of high-quality graphene, and other materials that require energy provided by microwave plasma for growth.

CVD Diamond wire drawing die blanks

CVD Diamond wire drawing die blanks

CVD diamond wire drawing die blanks: superior hardness, abrasion resistance, and applicability in wire drawing various materials. Ideal for abrasive wear machining applications like graphite processing.

CVD diamond for thermal management

CVD diamond for thermal management

CVD diamond for thermal management: High-quality diamond with thermal conductivity up to 2000 W/mK, ideal for heat spreaders, laser diodes, and GaN on Diamond (GOD) applications.

Bell-jar Resonator MPCVD Diamond Machine for lab and diamond growth

Bell-jar Resonator MPCVD Diamond Machine for lab and diamond growth

Get high-quality diamond films with our Bell-jar Resonator MPCVD machine designed for lab and diamond growth. Discover how Microwave Plasma Chemical Vapor Deposition works for growing diamonds using carbon gas and plasma.

Customer made versatile CVD tube furnace CVD machine

Customer made versatile CVD tube furnace CVD machine

Get your exclusive CVD furnace with KT-CTF16 Customer Made Versatile Furnace. Customizable sliding, rotating, and tilting functions for precise reactions. Order now!

Alumina Zirconia Special-Shaped Parts Processing Custom-Made Ceramic Plates

Alumina Zirconia Special-Shaped Parts Processing Custom-Made Ceramic Plates

Alumina ceramics have good electrical conductivity, mechanical strength and high temperature resistance, while zirconia ceramics are known for their high strength and high toughness and are widely used.

Silicon Nitride (SiN) Ceramic Sheet Precision Machining Ceramic

Silicon Nitride (SiN) Ceramic Sheet Precision Machining Ceramic

Silicon nitride plate is a commonly used ceramic material in the metallurgical industry due to its uniform performance at high temperatures.

Titanium Carbide (TiC) Sputtering Target / Powder / Wire / Block / Granule

Titanium Carbide (TiC) Sputtering Target / Powder / Wire / Block / Granule

Get high-quality Titanium Carbide (TiC) materials for your lab at affordable prices. We offer a wide range of shapes and sizes, including sputtering targets, powders, and more. Tailored to your specific needs.


Leave Your Message