DLC coating by UBMS

DLC coating contract processing is our company's specialty.

A new chapter has begun in the history of diamond-like carbon (DLC) film coating. We undertake contract processing for high-performance DLC coating with our UBMS™ series. If you have ever been unsatisfied with conventional DLC film coating and given up using it, please contact us.

Features

DLC film coating with UBMS enables:

Controlling the hardness of DLC films.
Achieving high adhesion strength of DLC films.
Expanding applications of DLC films.

Overview of Our UBMS Series

While DLC films have special properties such as high hardness and low friction coefficient, their applications are limited due to the low adhesion strength of conventional processing.
The unbalanced magnetron sputtering (UBMS™) equipment developed by Kobe Steel can produce a well-balanced film with high adhesion strength, expanding the applications of DLC films.

The unbalanced magnetron increases the plasma density near the substrate, intensifying the ion assist effect on the substrate. By controlling the bias voltage applied to the substrate, our UBMS equipment can control the properties of DLC films such as film structure, crystallization properties, composition, adhesion strength, and surface morphology.

Medium-size UBMS for mass production
UBMS504LL

Effective processing space: Φ450 x H600

UBM evaporation source: Equipped with 4 sets

Lineup of BELCOAT™ by UBMS

Name	DLC type	Thickness (µm)	Features	Typical applications
BELCOAT B	Standard	0.5–5	Achieving a balance of wear resistance, lubricity, and adhesion	General mechanical components Dies
BELCOAT HB	High hardness	1–5	Focused on wear resistance	Automotive components High-load mechanical parts
BELCOAT UB	Ultra-high hardness	1–4	Focused on wear resistance under high pressure	Automotive components for racing use Cutting tools
BELCOAT NB	Nano-multi layer	1–10	Achieving a balance of wear resistance, lubricity, and toughness with shock resistance	Bearings and punching dies
BELCOAT MB	Metal doped	1～10	Properties change by the type and amount of doped metals. Film stress relief effects.	Automotive components Plastic injection molds

*In addition to the above, we can offer a wide variety of DLC coatings to suit your application.

Features of DLC-UBMS™

Achieves a DLC film coating with low friction coefficient

The friction coefficient is extremely lower than conventional hard films.

Achieves a DLC coating with high adhesion

Achieves a DLC coating with high adhesion by inserting a metal/C-gradient layer as the intermediate layer.

Typical DLC applications

Parts	Automotive parts (rocker arms, retainers, piston rings) Hydraulic pump parts (piston shoes, pistons) Machine tools and textile machine parts (guides, sleeves) Sliding parts (bearings, ball screws, guide rails) Electronic and precision mechanical parts (wafers, disc handling components, glass fixtures)
Dies	Plastic molds, precision dies, chip dies Copper tube machining tools, copper and SUS tubes trimming dies Shearing and punching tools, rolls for bending aluminum, aluminum forging molds
Tools	Dry cutting tools (end mills, PCB micro-drills) Metal saws for aluminum and copper materials, slitters, disk saws for wood
Blades	Razor blades, knife and box cutter blades, glass wool cutting scissors, plane blades Dies and blades for plastic machinery
Other	Golf driver heads

High-speed steel (HSS) for SUS sheet punching

Engine parts for F1 racing cars

Kobe Steel’s high-hardness and high-adhesion DLC coating is applied to formular one engines that are known for incredible specifications with a maximum rotation speed of 19,000 rpms and maximum output of 700 horsepower.

Pins for aluminum die casting

Frictional resistance ratio to molten aluminum

Appearance of coating surface after testing

Coating capabilities of UBMS equipment

Applicable dimensions	Effective processing range Medium-size equipment Φ450 x H600 mm Weight Medium-size equipment max. 180 kg *Applicable dimensions depend on the target mounting conditions, deposition surface, etc. For more information, please contact us.
Materials suitable for coating	Carbide, SUS, tool steel, die steel, aluminum alloy, ceramic, glass *Our DLC film coating is applicable to Cr plated parts, Ti alloys, and nitride coating surfaces, which were not suitable for DLC coating. For more information, please contact us.
Processing temperature	150–300℃ *Processing at low temperatures below 100℃ is also available. For more information, please contact us.
Other applicable film types besides DLC	Nitride coating (TiN, TiAlN, CrN, etc.) Various metal films (W, Nb, etc.)
Thickness	1–10 μｍ

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