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Equipment structure: It mainly includes a vacuum system, DC arc power supply, target material assembly, workpiece frame and bias voltage power power supply, etc. The overall design is simple and the technology maturity is high.
Working principle: In a vacuum chamber, direct current high voltage generates a stable arc on the surface of the target material (metal or alloy), and the instantaneous high temperature causes explosive evaporation of the target material, forming a high-density metal plasma. Under the action of a negative bias electric field, plasma bombards and deposits on the surface of the workpiece at high speed, eventually forming a dense film coating.
Ii. Core Features
The arc excitation method is simple: It directly generates an arc relying on a DC power supply without the need for complex auxiliary excitation devices, and the operation threshold is low.
The plasma ionization rate is high: it can reach 60% to 90%, and the film layer forms a metallurgical bond with the workpiece substrate, with a bonding force far exceeding that of ordinary coating technology.
Wide adaptability of target materials: It can be compatible with various pure metal targets such as titanium, chromium, aluminum, and zirconium, as well as alloy targets such as TiAl and CrN, flexibly meeting different coating requirements.
Rich types of film layers: It can prepare various functional or decorative coatings such as metal films, nitrides, carbides, etc., such as TiN (titanium gold), CrN (chromium nitrogen), etc.
There is a slight droplet phenomenon: During the arc evaporation process, a small number of tiny metal droplets will be produced on the surface of the target material, which may cause fine particles to exist on the surface of the film layer.
Iii. Main Advantages
Low equipment cost: The structure is simple, and the core components (DC power supply, vacuum system) technology is mature. The procurement and maintenance costs are much lower than those of RF and microwave multi-arc coating machines, making it suitable for small and medium-sized manufacturers to enter the market.
High deposition efficiency: The deposition rate can reach 10 to 100μm/h, which is 5 to 10 times that of technologies such as magnetron sputtering. This can significantly enhance the efficiency of batch production and reduce the coating cost per unit product.
The film layer has excellent performance: The film layer is dense, has high hardness (usually up to HV1500~3000), strong wear resistance and corrosion resistance, and can significantly extend the service life of the workpiece.
Easy operation: Simple parameter adjustment (mainly controlling arc current, bias voltage, and vacuum degree), no need for professional senior technicians, quick to get started, and strong production stability.
Wide adaptability to workpieces: It can handle various substrates such as metals and ceramics, and can cover workpieces of different shapes and sizes such as cutting tools, hardware parts, and molds. It has good winding and plating properties.
Iv. Typical Application Scenarios
In the tool industry, cutting tools such as drill bits, milling cutters, taps, and precision molds like stamping dies and injection molds are treated with hard coatings like TiN and TiAlN to enhance their wear resistance and service life.
Hardware decoration industry: bathroom fixtures, door and window hardware, furniture accessories, watch cases and bands, etc., with decorative film layers such as titanium gold, rose gold, and gun gray, which are both aesthetically pleasing and anti-corrosive.
In the mechanical manufacturing industry: Key components of automotive engines such as piston rings, valve tapers, and gears are coated with wear-resistant coatings like CrN to enhance their adaptability to working conditions. Coating the surfaces of hydraulic components, bearings, etc. to enhance their wear resistance and corrosion resistance.
The daily necessities industry: tableware, kitchenware, spectacle frames, etc., achieve decorative effects and basic protection through coating, improving the texture and service life of the products.
In the electronics industry: Conductive coatings and shielding coatings for some electronic components, by taking advantage of their excellent conductivity and adhesion, ensure the stable performance of the components.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2003
Total Annual:
1 million US dollars-2 million US dollars
Employee Number:
80people~100 people
Ecer Certification：
Verified Supplier
Global Supplier of Next-Generation PVD Vacuum Coating Solutions
Founded in 2003, Guangdong Zhongda Vacuum Equipment Co., Ltd is a leading mechanical engineering and technology provider specializing in various type of vacuum PVD coating systems such as UV metallizer, sputtering coating machine,... Global Supplier of Next-Generation PVD Vacuum Coating Solutions
Founded in 2003, Guangdong Zhongda Vacuum Equipment Co., Ltd is a leading mechanical engineering and technology provider specializing in various type of vacuum PVD coating systems such as UV metallizer, sputtering coating machine,...
