Product Information

DLC Coating System

  • System Sales
  • Coating Service

Technical Information

What is DLC (Diamond Like Carbon) ?

Generally known as Diamond Like Carbon, it is a carbon coating nearly as hard as diamond or cBN.
DLC has various features depending on coating methods and coating structures. PVD (physical vapor deposition) system creates a hydrogen free coating.
Hydrogen free DLC generally indicates Vickers hardness (HV) beyond 5,000. It is extremely hard and low friction coefficient.
However, PVD method of coating is so hard that it is difficult to make a thick coating, and the thickness is generally 1.0μm.
It is mainly used for cutting tools, dies and various machine parts.

CVD (chemical vapor deposition) method can make a hydrogen contained DLC coating and Vickers hardness (HV) is less than 4,000.
Hardness is lower than hydrogen free DLC, but on the other hand, film adhesion is high. It can form coatings on objects that are complicated shapes as well as on the inside of cylinder types.

DLC

DLC Coating System

Effectiveness

High hardness and high wear resistance are distinguishing characteristics of DLC.
It is very effective for longer tools' life used at manufacturing sites such as cutting tools, punches and other machine parts.
At cutting process by cutting tools, "improved finishing on the processed surface" and "improved yield rate" are obtained by DLC. As for aluminum processing, DLC is effective for "weld prevention".

ShinMaywa's DLC coating

ShinMaywa's DLC system has adopted a pulse-controlled coating method and is developed and manufactured on our own.
We have mainly developed a hydrogen free DLC by PVD method with features of Vickers hardness (HV) beyond 6,000 and high film adhesion.
Thick coating approximately up to 1.5μm is available. Our process provides thicker coatings than other DLC in general.
Our coating has been accepted by major tool companies and we have numbers of successful business results for dies and machine parts.

A special coating can be formed by ShinMaywa's DLC system, which is called a CN coating that is only available by our system.
Generally, DLC is not a film which shows the resistance from a semiconductor from an insulator. Conductivity can not be expected.
However, ShinMaywa has developed this conductive CN coating in order to meet customers' requests; a coating with great wear resistance in addition to conductivity.
If you are looking for a conductive coating with wear resistance, ShinMaywa's coating is very effective.

Characteristics of DLC coating and System specifications

Characteristics of DLC coating
Property ta-C CN
Hardness HV6,000-8,000 HV2,000-3,000
Friction coefficient 0.1-0.2 -
Thickness 1.5μm
(STD:0.7-1.0μm)
<1.0μm
Electric resistance 1-5×106Ω/□ 0.02 Ω/□
Heat resistant temp. <500℃
Color Dark gray
System specifications
Size W 6,200mm
D 2,620mm
H 2,650mm
Weight Approx. 5,200kg
Coating area Φ600 × H 600mm
Temp. <150℃

System Sales &Coating Service

ShinMaywa sells hydrogen free DLC coating systems. Coating service is also available using our DLC system. We have processed endmills and drills of major tool makers and have numbers of successful business results for parts used at manufacturing sites such as guide pins and dies. Please contact us in the following "Product Inquiries" if you have any questions or a request of quotation.

Application Examples

  • Cutting tools (endmills, drills, insert chips, hobs etc.)
  • Dies (drawing dies, press, punches etc.)
  • Machine parts (guide pins, sliding parts etc.)
  • Blades (beauty related products etc.)
  • Artificial heart
DLC

Download

DLC Coating System Catalog[PDF/2.0MB]

Product Inquiries

ShinMaywa Industries, Ltd.
Particle Beam Department, Industrial Machinery Systems Division1-1 Shinmeiwa-cho, Takarazuka, Hyogo 665-0052, Japan
Phone: +81-798-54-1880Fax: +81-798-54-1805