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Small and medium-sized enterprises

7 days

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Zhidao Cloud Coating Service

Zhidaoyun is one of the world's leading companies in PVD coating (physical vapor deposition coating), CVD and PACVD coating technology, which is widely used in the fields of tools, molds, and parts to meet customers' requirements for high wear resistance, high lubrication and high finish. A broad portfolio of custom coatings for applications is available, designed for industrial manufacturing processes as well as for mechanical components used in many markets.

We provide engineering support to our customers' engineering and design teams to provide the best coating services possible, including pre-treatment and post-treatment of coatings.

Increase productivity and part quality

Coatings extend tool life, reduce downtime, reduce scrap rates, and increase end-user productivity. They also provide better flow and release of the tool, which improves the quality level of product processing.

High wear resistance

Low coefficient of friction

Spalling resistance

High fatigue resistance

Corrosion resistance

Improved part release

提高生产率和零件质量

Coating technology

Physical Vapor Deposition (PVD)
Chemical Vapor Deposition (CVD)
Chemical Vapor Phase Aluminizing (CVA)
Plasma-assisted chemical vapor deposition (PACVD)
Diamond-like carbon (DLC)
Laser hardening process

Physical Vapor Deposition (PVD)

The PVD process is used for the coating of a large number of tools and components, and the coatings are composed of nitrides, carbides, and carbon nitrides of Ti, Cr, Zr, and alloys such as AlCr, AlTi, and TiSi. Applications include cutting and forming tools, mechanical components, medical devices, and products that benefit from the hard and decorative characteristics of coatings. Typical process temperatures for PVD coatings are between 250 and 450 °C. In some cases, Ionbond PVD coatings can be deposited at temperatures below 70 °C or up to 600 °C

Core Benefits:

Hardness improvement: microhardness can reach HV2000-4000 (3-5 times that of matrix materials);

Friction coefficient optimization: 0.1-0.3 (50%-70% lower than uncoated surface);

Wear life: 3-10 times longer tool life (depending on working conditions);

Deep hole plating: the deviation of the thickness of the inner wall of the hole with a depth-to-diameter ratio of 10:1<15% ;

Acute angle covering: the film layer at the R angle of the cutting edge is 0.02mm continuous and free of defects;

Three-dimensional uniformity: thickness fluctuation of complex surfaces ± 0.2μm;

Chemical Vapor Deposition (CVD)

The typical process temperature for CVD coatings is 900 to 1050 °C for the HT CVD process and 720 to 900 °C for the CVD process. The base materials are tungsten carbide, tool steel, high-temperature nickel alloys, ceramics, and graphite. Tempered steel tools and components need to be heat treated after coating to achieve the desired hardness.

Core Benefits:

Low stress

Diffusion bonding forms resulting in excellent coating adhesion

High load-bearing capacity

Excellent coating uniformity, regardless of the shape of the part

Capable of coating parts with complex geometries, including some parts with internal diameters

Chemical Vapor Phase Aluminizing (CVA)

CVA is an advanced technology that provides an environmentally friendly, better-performing alternative to traditional packaging, unpackaging, and slurry technologies. CVA also guarantees:

Core Benefits:

The process is environmentally friendly and does not produce waste powder

Precise control of the deposition process

Offers the possibility of coating the internal cooling channels

Uniform thickness coating is applied to large surfaces

It can be coated on a wide range of materials

Low surface defect density

Plasma-assisted chemical vapor deposition (PACVD)

The PACVD process is used for conductive and non-conductive substrates over a very wide range of coating temperatures below 200 °C, with typical thicknesses in the range of 2 - 3 microns. DLC coatings offer excellent hardness, wear resistance, and low coefficient of friction in dry or underlubricated conditions. The coating structure is non-crystalline and contains about 70% sp3 bonding, which explains the high hardness of the coating (10-40 GPa)

Core Benefits:

Rich substrates

High-precision substrates do not deform

No post-processing is required

A gas process that does not require rotation for uniform coating of 3D geometry

Green technologies for precipitates, processes and products

Diamond-like carbon (DLC)

Diamond-like carbon coatings (DLCs) can be deposited through different techniques such as PVD arcing, PVD sputtering, and PACVD processes. By selecting different techniques and deposition parameters, a variety of performance characteristics can be obtained, including hydrogenated and non-hydrogenated DLC coatings. DLC coatings are environmentally friendly coatings that can be used to reduce friction, wear, and corrosion. They can also be used to alter electrical conductivity and wettability. Because the colors of DLC coatings (ranging from anthracite to deep black) are attractive, they are often used in decorative applications such as watchmaking, jewelry, kitchen and bathroom hardware, automotive interiors, firearms, and other areas for both aesthetics and performance.

Core Benefits:

Low coefficient of friction

Superior abrasion protection

It has excellent protection against friction, cold welding and micro-vibration wear

Corrosion protection in specific corrosive media

From anthracite to deep black, it is colorful and attractive

Laser hardening process

The laser hardening process offers many advantages over conventional heat treatment techniques – from an economic point of view, it increases productivity, reproductivity and product quality. In many applications, local treatment and low heating reduce distortion, and rapid cooling results in a good microstructure. Laser surface treatment can be divided into solid-state conversion process and melting process. The former includes martensitic hardening, tempering, and flushing, while the latter includes remelting, alloying, cladding, and diffusion hardening.

Core Benefits:

Wear Resistance: The primary advantage of laser quenching is improved wear resistance. As a result, abrasive wear is reduced to a great extent.

Higher hardness: Laser-hardened surfaces are harder than abrasive media, and adhesive wear can also be affected by reducing the coefficient of friction.

Improved Surface Fatigue Properties: Additionally, laser hardening improves the fatigue properties of surfaces thanks to increased compressive stress, which increases the bearing capacity to a level above the applied Hertz stress.

Commonly used coating types and properties

Titanium Carboxitride (TiCN)
Titanium nitride (TiN)
Nitrogen-aluminum-titanium (TiAlN)
Chromium nitride (CrN)
Diamond-like (DLC)
Chromium nitrogen, aluminum (AlCrN)
碳氮化钛(TiCN)

Titanium Carboxitride (TiCN)

Hardness strengthening: 30% harder than TiN, specializing in difficult-to-machine materials

Anti-Bond Shield: Prevents stainless steel knives from sticking and keeps the blade sharp

Suitable for:

304/316 stainless steel turning

Precision milling of mold steel

Deep hole tapping (especially fine threads)

Special Skills:

Built-in "cooling buff": 10% reduction in cutting temperature under the same parameters

Layered coatings (such as TiN+TiCN) can be used for combo punches

氮化钛(TiN)

Titanium nitride (TiN)

Wear-resistant armor: add a hard shell to the surface of the knife to prevent ordinary wear

Lubrication and drag reduction: Let the chips slip away like a slide, reducing friction and heat generation

Suitable for:

Processing ordinary steel (such as 45# steel)

Roughing of cast iron (brake discs/engine blocks)

Low speed cutting (<150m/min)

Special Skills:

Cheap: The cheapest starter coating

Strong versatility: suitable for workshops with multi-process switching

氮铝钛(TiAlN)

Nitrogen-aluminum-titanium (TiAlN)

High temperature barrier: 800°C automatically generates alumina protective film

Speed blessing: Let the knife be full of firepower in the high-speed area

Suitable for:

Titanium alloy aviation parts processing

Nickel-based superalloy cutting

Dry cutting (coolant-free environment)

Special Skills:

The higher the temperature→ the thicker the oxide film→ the higher the defense value

The rotation speed is pulled to more than 300m/min

氮化铬(CrN)

Chromium nitride (CrN)

Anti-stick artifact: Let the aluminum chips fall off as smoothly as if they were greased

Surface polishing: It has a mirror effect, eliminating the need for subsequent processes

Suitable for:

Aluminum alloy mobile phone shell finishing

Copper threading

Magnesium alloy thin-walled parts are cut

Special Skills:

Iridescent oxide film produced during processing (normal)

Disable cutting fluid (oil reduces performance)

类金刚石(DLC)

Diamond-like (DLC)

Superhard protection: Hardness comparable to natural diamonds

Self-lubricating buff: The coefficient of friction is lower than that of ice

Suitable for:

Carbon fiber drone skeleton processing

Fiberglass insulation molding

Graphite electrode precision engraving

Special Skills:

1 knife is used to complete the workpiece batch

The surface roughness directly reaches Ra0.4

氮铝铬(AlCrN)

Chromium nitrogen, aluminum (AlCrN)

Rigid and flexible: hard resistant HRC60+ material

Anti-collapse expert: specializes in mold processing chipping

Suitable for:

Hard milling of hardened die steel (instead of EDM)

High hardness gear finishing

Intermittent cutting conditions

Special Skills:

The surface honeycomb structure absorbs energy and resists shocks

It can withstand 1200°C thermal shock

Service guarantee

刀具涂层服务

Advanced hardware facilities

It has a complete coating process production line, equipped with international advanced coating equipment, automatic cleaning line, sandblasting pre- and post-treatment equipment and polishing equipment to achieve highly automated, efficient and high-quality coating production

刀具涂层服务

Strict quality management

Perfect ISO9001 management system, strict quality control, rigorous process development, and complete testing equipment ensure that the quality of the coating is stable and the quality is the same

刀具涂层服务

Fast delivery and after-sales service

It provides customers with the fastest coating delivery period and perfect and timely after-sales service to ensure the strong competitiveness of customers

刀具涂层服务

Strong technical team

With 20 years of experience in metal cutting tool manufacturing, our professional coating technology team can provide the most suitable coating solutions in the shortest time according to customer needs

刀具涂层服务

R&D system

Zhidao Cloud has a R&D system that continuously upgrades and improves new products according to the different needs of customers, and is committed to providing customers with the best products and services that meet customer needs and provide them with the best quality

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