DLC Coating Product List and Ranking from 5 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Dec 03, 2025～Dec 30, 2025
This ranking is based on the number of page views on our site.

DLC Coating Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Dec 03, 2025～Dec 30, 2025
This ranking is based on the number of page views on our site.

  1. 音羽電機工業 Hyogo//Building materials, supplies and fixtures manufacturers
  2. 不二ＷＰＣ Kanagawa//others
  3. 蒲田工業 Tokyo//Trading company/Wholesale
  4. 4 ノダキ 本社 Aichi//others
  5. 4 エヌエスケミカル Tokyo//Building materials, supplies and fixtures manufacturers
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DLC Coating Product ranking

Last Updated： Aggregation Period:Dec 03, 2025～Dec 30, 2025
This ranking is based on the number of page views on our site.

  1. Contract testing at the Thunder Technology Center (equipped with testing facilities and equipment related to thunder). 音羽電機工業
  2. Hybrid DLC coating with WPC treatment. 不二ＷＰＣ
  3. WPC processing <Powder adhesion suppression> 不二ＷＰＣ
  4. [Surface Treatment] JC Coat (Release Properties (Non-Stick), Water and Oil Repellency) 蒲田工業
  5. 4 Surface treatment: DLC coating (wear resistance, release properties) 蒲田工業

DLC Coating Product List

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[Surface Treatment] JC Coat (Release Properties (Non-Stick), Water and Oil Repellency)

[Surface Treatment] JC Coat (Release Properties (Non-Stick), Water and Oil Repellency)

JC coat (high-performance DLC treatment) (release properties (non-stick), water and oil repellency, adhesion, dimensional accuracy)

■Excellent Characteristics 1) Due to the non-stick coating based on DLC, it excels in hardness, release properties, and water and oil repellency. 2) The adhesion is strong, and the risk of delamination spreading from defects in the film is low. 3) With a thin film of less than 1μm, the impact on dimensions is extremely small.

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Surface treatment: DLC coating (wear resistance, release properties)

Surface treatment: DLC coating (wear resistance, release properties)

DLC coating (wear resistance, release properties)

■Outstanding Features The hardness is equivalent to Vickers hardness, with various properties of DLC available in the range of 1500 to 7000 HV. It excels in wear resistance due to its high hardness. Additionally, the coefficient of friction is as low as that of fluororesin, providing excellent release properties. It also has effects in preventing aluminum adhesion and gas barrier effects.

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WPC processing <Improvement of fatigue strength>

WPC processing <Improvement of fatigue strength>

Can be processed without dimensional changes in metals such as super hard, cermet, SKD, SCM, stainless steel, and aluminum!

"WPC processing" is a type of cold working that involves colliding fine particles (media) at high speed against the surface of a metal to form countless tiny dimples while simultaneously strengthening only the surface layer. The dimples on the processed surface create oil reservoirs, significantly improving friction and wear characteristics. Additionally, by applying strong processing to the very surface of the metal, it achieves fine crystallization and enhances fatigue strength. 【Added Functional Surface Properties】 ■ Lubricity ■ Release properties ■ Fluid control ■ Durability ■ Optical properties *For more details, please download the PDF or feel free to contact us.

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Contract testing at the Thunder Technology Center (equipped with testing facilities and equipment related to thunder).

Contract testing at the Thunder Technology Center (equipped with testing facilities and equipment related to thunder).

Contract testing and tours (by appointment) are available at the Thunder Technology Center (equipped with testing facilities and equipment related to lightning).

The Lightning Technology Center is Japan's only specialized lightning testing center equipped with various testing devices, including lightning test equipment that utilizes OTOWA's technology. We accept commissioned testing using Otowa Electric Industry's testing facilities and equipment. We conduct development tests for lightning protection products and evaluation tests for various electrical devices, contributing to a safe and secure society. ■ Target Tests (also compatible with JIS and IEC standards) Lightning surge withstand tests for various electrical devices (impulse voltage tests, current tests) Commercial frequency withstand voltage tests for various electrical devices Operational responsibility tests for high-voltage and low-voltage lightning arresters Protection coordination tests using high-voltage and low-voltage lightning arresters Mechanical strength: vibration tests, tensile and compression tests Various environmental tests: cold heat, salt spray, sunlight, etc. *We have prepared materials regarding facility information and commissioned testing. Please request them through the inquiry form. Lightning Technology Center: Amagasaki City, Hyogo Prefecture (10 minutes by train from JR Osaka Station to JR Amagasaki Station, within walking distance)

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Electrodynamic vibration testing equipment - Contract testing at the Thunder Technology Center.

Electrodynamic vibration testing equipment - Contract testing at the Thunder Technology Center.

Kansai's largest electromagnetic vibration testing equipment is available for contracted testing at the Thunder Technology Center (equipped with testing facilities and equipment related to lightning).

■Environmental Testing and Vibration Testing We can conduct various environmental and vibration tests to ensure the reliability of products used over many years. *The electrodynamic vibration testing equipment is one of the largest in the Kansai region. ■Electrodynamic Vibration Testing Equipment Excitation Force: Sine Wave 16kN Frequency: 5 to 3000Hz Maximum Displacement: 51mm p-p The Lightning Technology Center (Amagasaki City) is a facility equipped with various testing devices, including lightning test equipment that utilizes OTOWA's technology. We accept contract testing using the testing facilities and equipment of Otowa Electric Industry. Lightning Technology Center: Amagasaki City, Hyogo Prefecture (10 minutes by train from JR Osaka Station to JR Amagasaki Station, within walking distance)

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DLC for thin material cutting blades "Genius Coat HA"

DLC for thin material cutting blades "Genius Coat HA"

Excellent anti-welding properties! Hydrogen-free DLC with ultra-high hardness (>40 GPa) by PVD.

We would like to introduce our DLC "Genius Coat HA" for thin cutting blades. Thanks to its ultra-thin film specification (0.1μm), it can be coated without compromising the edge shape. It excels in anti-adhesion properties for soft metals like aluminum and is widely applicable as cutting tools and molds. Additionally, it can remove coatings from both carbide and steel, allowing for regrinding and recoating. Please feel free to contact us when you need assistance. 【Features】 ■ Ultra-high hardness (＞40GPa) hydrogen-free DLC by PVD ■ Excellent anti-adhesion properties for soft metals like aluminum, widely applicable as cutting tools and molds ■ Coating possible without compromising edge shape due to ultra-thin film specification (0.1μm) ■ Coating removal possible for both carbide and steel, allowing for regrinding and recoating *For more details, please download the PDF or feel free to contact us.

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[Case Study] Surface treatment that combines "slipperiness" and "wear resistance"

[Case Study] Surface treatment that combines "slipperiness" and "wear resistance"

A case study that was able to reduce maintenance work for replacements due to high durability.

This is a case study from a company that manufactures soft packaging materials (packaging). They were experiencing issues with Teflon tape used on the transport guide of processing machines for transporting products, as it would stick to the products and required frequent replacement. Therefore, we proposed an additional DLC treatment after blast processing. This surface treatment, which excels in slip resistance and wear resistance, is very hard and has a low friction coefficient, allowing for smooth transport of the film and high durability, ensuring long-lasting slip performance. By applying DLC treatment on top of the blast processing, the film of the product was transported smoothly, and maintenance work for tape replacement was reduced due to its high durability. [Issues] - The friction coefficient was higher than that of the Teflon tape in use, causing friction resistance and preventing smooth transport. - Although we tried reducing the contact area with blast processing, it resulted in scratches on the product's film. *For more details, please refer to the PDF document or feel free to contact us.

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WPC processing

WPC processing

In the drivetrain components, fatigue strength has significantly improved! This greatly reduces issues such as shaft breakage.

"WPC processing" is a technology that modifies metal surfaces by mixing fine particles with a compressible gas and causing high-speed collisions with the metal surface. The modified surface becomes harder and changes shape into tiny dimples, which improves friction and wear characteristics. Additionally, by colliding fine particles at high speeds, the surface is refined, compressive residual stress is imparted, and toughness is enhanced. 【Features】 ■ Reduced friction ■ Wear prevention ■ Oil film retention effect ■ Increased fatigue strength *For more details, please download the PDF or feel free to contact us.

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WPC processing <Excellent sliding properties with surface microtexturing>

WPC processing <Excellent sliding properties with surface microtexturing>

By striking micro media, micron-sized irregularities are formed. It is also possible to modify the surface to a high-functionality plateau structure!

"WPC processing" is a surface modification technology that involves mixing fine particles of a material suited to the purpose with a compressible gas and colliding them at high speed onto the surface of metal products. By introducing strong processing into the local areas of the surface, it is possible to add fine crystal layers, nano crystal layers, and compressive residual stress. Additionally, it forms micro dimples on the surface, which enhances friction and wear characteristics due to shape effects such as oil reservoirs. 【Added Functional Surfaces】 ■ Lubricity ■ Release properties ■ Fluid control ■ Durability ■ Optical properties *For more details, please download the PDF or feel free to contact us.

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Hybrid DLC coating with WPC treatment.

Hybrid DLC coating with WPC treatment.

It is effective during non-lubricated conditions and boundary lubrication (when there is little oil and solid contact occurs)!

"DLC coating" is a coating technology that, despite being a thin film of approximately 1μm (1/1000mm), possesses various characteristics such as high hardness, wear resistance, low friction, and low adhesion. Our company has successfully developed a technology that combines DLC coating with WPC treatment. This forms a smooth oil reservoir, enhances wear resistance, and the hard coating further prolongs its effectiveness. 【Features】 ■ Reduces friction ■ Suppresses oil temperature rise and deterioration ■ Improves response and contributes to smooth operation ■ Increases wear resistance, leading to longer component lifespan ■ Maintains good vehicle condition, resulting in cost reduction *For more details, please download the PDF or feel free to contact us.

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WPC-treated DLC coating for motorcycles

WPC-treated DLC coating for motorcycles

By applying WPC as a surface treatment for DLC coating, a surface with excellent tribological properties is formed!

"DLC coating" is a technology that involves coating a nanometer-thin film, primarily composed of carbon and hydrogen, onto metal surfaces. It is an advanced surface treatment technology that achieves high effectiveness in low friction, high durability, high hardness, and corrosion resistance. Our company has successfully developed a technology that combines DLC coating with WPC treatment. By combining these, we can enhance adhesion and further prolong the effects over time. 【Features】 ■ Suppression of oil temperature rise ■ Improvement of transmission lifespan ■ Enhanced piston sliding properties ■ Reduction of mechanical noise ■ Improved engine feel *For more details, please download the PDF or feel free to contact us.

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DLC coating entire process

DLC coating entire process

Inside the factory's secret big reveal! Meticulously polished techniques create exquisite DLC films.

We would like to introduce the entire process of our DLC coating. First, we modify the substrate and perform thorough cleaning, carefully masking the unnecessary parts of the DLC film. After completely wiping down the waiting area in the chamber, we inject acetylene gas. Various gases are injected while applying high voltage. The film is built up by repeating the processes of film formation and cooling, taking about 6 hours to complete. 【Process】 1. Inspection and cleaning 2. Masking 3. DLC coating 4. Finishing *For more details, please download the PDF or feel free to contact us.

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WPC treatment <Extension of lifespan for metal parts and molds>

WPC treatment <Extension of lifespan for metal parts and molds>

The dimples on the processed surface form oil reservoirs and significantly improve friction and wear characteristics!

"WPC processing" is a type of cold working that involves high-speed collisions of fine particles (media) measuring several tens of micrometers against the surface of metals, forming countless tiny dimples while simultaneously strengthening only the surface layer. This process enhances fatigue strength by introducing compressive residual stress and refining the crystal grains. As a result, it is increasingly being used as a surface modification technology to improve strength and functionality in various metal products such as machine parts, cutting tools, and molds. [Added Surface Functions] ■ Lubricity ■ Release properties ■ Fluid control ■ Durability ■ Optical properties *For more details, please download the PDF or feel free to contact us.

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WPC processing <Powder adhesion suppression>

WPC processing <Powder adhesion suppression>

Improved powder flow, 1.2 to 2.0 times better permeability! Reduces maintenance and replacement hassle due to mesh clogging.

"WPC processing" stands for Wide Peening Cleaning and is a type of shot peening (impact method). It doubles the passability by improving slip properties, reduces clogging, and minimizes material loss. It suppresses adhesion and allows for easy cleaning with air. It forms uneven surfaces and reduces contact area. In other words, since it is not a coating, you can use it with confidence. 【Benefits】 ■ Increases productivity ■ Improves yield ■ Reduces cleaning time ■ Cuts labor and utility costs ■ Measures against foreign matter contamination *For more details, please download the PDF or feel free to contact us.

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