Protective coating

aluminum alloystainless steeltitanium alloy

Hansheng Automation specializes in customized DLC coating services and has accumulated a lot of experience in this field. With our DLC coating services, your products will have excellent wear resistance, corrosion resistance and self-lubricating properties.Custom DLC Coating Service is a post-process enhancement for Hansheng Automation's products after CNC machining. Our comprehensive CNC machining system boasts a precision of ±0.01mm for conventional turning and milling, ±0.005mm for precision grinding and turning, and micron-level precision of ±0.002mm for ultra-mirror finishing. As a professional packaging machinery parts supplier, we offer comprehensive manufacturing capabilities encompassing gear manufacturing, CNC machining, and custom casting. This means we can provide any component you require for your equipment, including customization.Product FeaturesCustomizable solutions: Our customized DLC coating service can be individually designed to meet your requirements. If you need to specify the thickness, hardness and surface finish of your parts for DLC coating, we can adjust the corresponding parameters for you. This ensures that your parts are perfectly coated with DLC.Performance Advantages: DLC-coated items will have very high performance. Excellent wear resistance and minimal friction translate into low energy consumption when one uses high hardness. It will also possess outstanding chemical stability and corrosion resistance. These coatings guarantee smooth operation and a longer service life of the parts by being also self-lubricating among other things. Depending on the kind of coating, our DLC coatings can resist temperatures up to 600°C and keep their integrity in demanding surroundings.Technical ParametersItemSpecificationTest StandardCoating TypeDiamond-Like Carbon (DLC)ISO 14577Hardness2000-3500 HV (Typical: 3300HV)Vickers Hardness TestThickness RangeTotal thickness: 0.5-20μm Single side: 1-3μmCoulometry/SEMFriction Coefficient (Dry)0.02-0.1 (Typical: 0.1)ASTM G99Salt Spray Resistance≥1000 hours (No rust)ASTM B117Maximum Service Temperature350℃-Coating Process Temperature<260℃-Suitable SubstratesStainless Steel/Titanium Alloy/Aluminum Alloy/Ceramics/Plastics etc.-Coating ColorBlack/Grey/Dark Grey/Colored (Customizable)-Core AdvantagesSelf-lubricating, Low-temperature Deposition, High Surface Finish, Anti-adhesion-Note: The "typical values" in the table are measured parameters under common application scenarios. Specific performance can be customized through process adjustments.Custom DLC Coating Process FlowThe workpiece substrate treatment: the workpiece will be polished to less than Ra0.2um, ensuring the substrate surface treatment does not leave dead ends, which affects the film layer and the substrate can be firmly combined.Fully cleaned: the workpiece to be coated is fully cleaned and mounted on a set of fixtures, designed to optimize the loading size of the cavity and ensure the uniformity of the coating. The vacuum chamber is vacuumed to 10-6 torr (high vacuum) to exclude any contaminants, then inert gas is ionized for gas cleaning, preparing the parts for metal precipitation.Metal precipitation: solid metal (target material) is loaded with high-current, low-voltage arc, causing the metal to evaporate and ionize instantly. Metal ions, under high energy, pass through inert or active gas into the chamber and precipitate on the workpiece.Applications of DLC Coating ServiceAutomotive Industry: DLC coating is used for parts including engine valves, gears, and piston rings. Low friction and great wear resistance help lower maintenance costs and increase fuel economy. For example, DLC-coated piston rings show lower friction loss, improving engine performance.Semiconductor and Electronics: DLC coatings are perfect for tools for semiconductor manufacture and connectors. The resistance to corrosion and electrical insulating qualities guarantee consistent signal transmissions and extended service life for electronic equipment.Precision Tools and Molds: DLC coating greatly increases the service life of precision tools (such as cutting tools) and molds (such as injection-mold tools). Its non-stick qualities prevent material adhesion, guaranteeing exact and consistent production, while the great hardness lowers wear from repeated use.Aerospace: Components used in aerospace applications endure severe conditions and temperatures. Turbine blades, bearings, and other vital components use DLC-coated parts for great thermal stability and low-friction characteristics, enhancing dependability and performance.FAQQ: Can I be guaranteed a coating for parts with complex shapes?A: Yes, our customized services are tailored to the specific shape of the part and parameters are adjusted to ensure even complex geometries are covered with a uniform and perfect DLC coating to meet your practical needs.Q: What is the role of self-lubrication in practice?A: Particularly in applications where it is difficult to add conventional lubricants or where the lubrication needs are high, the self-lubrication function lets the parts run smoothly without additional lubrication, lowers friction losses and heat, increases efficiency and extends the service life of the parts.Q: Do different substrates have an effect on the effectiveness of the coating?A: Different substrates (e.g. stainless steel, titanium alloys, aluminum alloys, ceramics, plastics, etc.) have different material properties. To minimize the effect of substrate variations on the coating effect, we conduct pre-treatments and other activities appropriately when we execute the DLC coating process, thereby ensuring that the coating adheres well to the substrate and generates the expected performance effect.Q: How does the metal precipitation step work?A: In the metal precipitation step, we load the solid metal (i.e. target material) with high current and low voltage arc, which makes the metal evaporate and ionize instantly, and then the metal ions enter the chamber through inert gas or active gas under the action of high energy, and finally precipitate on the workpiece, so as to realize the deposition of the coating on the surface of the workpiece.Q: How specifically do DLC coatings improve fuel economy in automotive applications?A: Because DLC coatings have low friction and great wear resistance, they help to minimize friction losses between parts in the automotive sector including engine valves, gears and piston rings. For piston rings, for instance, less friction losses translate into smoother engine performance, which lowers energy losses, increases fuel economy, and helps to cut maintenance costs.Technical Specifications / FeaturesCoating Type: Diamond-Like Carbon (DLC)Hardness: 2000-3500 HV (Typical: 3300HV)Thickness Range: Total thickness 0.5-20μm, Single side 1-3μmFriction Coefficient (Dry): 0.02-0.1 (Typical: 0.1)Salt Spray Resistance: ≥1000 hours (No rust)Maximum Service Temperature: 350℃Coating Process Temperature: <260℃Suitable Substrates: Stainless Steel, Titanium Alloy, Aluminum Alloy, Ceramics, Plastics, etc.Coating Color: Black, Grey, Dark Grey, Colored (Customizable)Core Advantages: Self-lubricating, Low-temperature Deposition, High Surface Finish, Anti-adhesion