Nasi provides free sampling service for regular PVD coatings, such as titanium nitride, titanium carbonitride, high alumina titanium, rose gold, silica-alumina-titanium, DLC and so on. However, it is only limited to small pieces that are processed with the furnace and do not need to be coated as a pendant.Proofing, risk of damage to artifacts!!!!

For daily opening of the furnace, the delivery time is 1-2 days. For regular opening of furnace, one week. (Delivery period may be extended due to power restrictions after October 2021)

R&D Collaborative R&D Programs

After the research of Nasi, we believe that the customer's product has a great market prospect, and the customer's product is selected as the coating process for technical research, Nasi will sample free of charge until it succeeds or gives up. Welcome to call us for case studies. 

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1. Workpieces such as high speed steel and tool steel need to be coated with light anti-rust oil before shipment to prevent the products from rusting.
2. Workpieces need to be carefully and individually packaged to avoid damage during transportation, especially tools and workpieces with high surface requirements.
3. We also apply anti-rust oil to workpieces such as high-speed steel and tool steel after coating (except for special requirements).

1. Steel parts need to apply a thin layer of oil to prevent rust.
2. Parts need to be wrapped and package individually to prevent damage during transportation.
3. A thin layer of oil will also apply to the parts after coating. Please specify if you require otherwise.

1. PVD thickness ranges from 2-5 μm, and the coating thickness can be precisely controlled by the process, which usually does not affect the accuracy of workpieces with dimensional tolerances greater than 10 μm.

2. If your products require higher dimensional accuracy, please reserve a margin and communicate with us in advance.

1. PVD coating thickness is in the range of 2-5 μm. The maximum affect on dimension accuracy is less than 10 um.

2. If a part has a higher precision requirement, please notify us ahead of time and machined to leave enough room for a coating thickness.

NanoShield can coat workpieces up to a maximum size of 1700 (H) x 680 (φ) mm.Different furnace sizes for different coating processes, plant areasPlease contact your local factory for accurate coating processing dimensions.

The maximum coating dimension is 1700(H) x 680(φ)mm 

1. No other surface modifications, such as plating, carburizing, carburizing, phosphating, oxidative blackening, TD or CVD, can be applied to the work surface.
2. There should be no rust, corrosion, paint, glue, etc. on the surface of the workpiece.
3. Surface roughness requirements: general tools, molds and spare parts to meet the needs of the premise of the smoother the better, the molding surface Ra <0.2μm is appropriate: for mirror plastic molds, etched molds, it is completely based on the product requirements (the customer to deal with).
4. Assembled molds or inlaid tools must be disassembled into individual parts if they can be disassembled.
5. The surface of the welded workpiece must be thoroughly cleaned, without oxidized layers or embedded holes.

1. No other surface treatments should be done before PVD, such as plating, salt bath nitriding, carbonizing, phosphorizing, oxidizing, TD and CVD.
2. Surface should have no corrosion, rust, paint and glue.
3. A smooth surface is required for coating. A roughness of Ra<0.2μm is required for good coating result.
4. Inlays and fix pins of a mold need to be removed before coating. 
5. Welding areas need to be properly cleaned and no black oxide and blind holes should be present.

No. PVD coating is a racking coating, which requires an upper racking point, and the racking point is not well plated. Although it is possible to achieve full coating of the outer wall by tumbling, it is not as reliable and even as rack coating. In addition, PVD coating follows a 1:1 ratio.depth-to-diameter ratio law The bore is not well plated. the effect will be worse for bores under 6mm.

Please clearly identify the parts to be coated. The workpiece to be coated must have a part that can be clamped, and it is unlikely that all parts can be coated. If there is a special area that cannot be coated, please inform us in advance.

Areas to be coated need to be specified. Parts need to have a holding area on a fixture. Areas not to be coated need to be specified ahead of time.

Nash needs to know the substrate material, hardness and heat treatment tempering temperature of the coated workpiece in order to provide reasonable process conditions that can be contained in the coated material:

1. high-alloy tool steel, high-speed steel, stainless steel; 2. cemented carbide; 3. titanium alloys; 4. nickel alloys.

Tool steels must be tempered more than twice at temperatures higher than 500°C to maintain the hardness of the steel for use. The workpiece to be coated must be electrically conductive. Since the PVD process is carried out by loading the entire workpiece into the furnace, the above conditions must be met regardless of whether or not the part is to be coated.

Naxau coatings are prepared at high temperature under high vacuum. To optimize coating performance, please prepare your tools following these requirements.

Prior to coatings, we will need to collect information on type of tool materials, heat treatment procedures, pre and post treatment of the products. Materials suitable for coatings are.

1. High alloy steel, HSS high speed steel and SUS stainless steel.

2. Carbide 3. Titanium alloy 4. Nickle alloy

Harden steel must have a tempering temperature higher than 500°C and temper at least twice to attain necessary hardness and minimize stress. The entire parts must be conductive.

1. Material and grade to be coated.
2. Tempering temperature and hardness.
3. Identifies the functional side of the coating (i.e., the focal side of the coating).
4. For workpieces with a dimensional accuracy of less than 5 μm, it is necessary to state the specific finishing requirements and the reserved dimensions.
5. The main parameters such as application and material to be processed, processing speed, etc., allow us to recommend the most suitable coating.

1. Steel grade
2. Heat treatment process and hardness of a product
3. Highlight and specify area of coating
4. Notify us if the dimension tolerance is less than 5 μm
5. Specify the application of your products, we will recommend a proper coating for you.

Nash can provide decoating and recoating services for workpieces (some carbide grades cannot be decoated).

Naxau provides decoating and recoating service. some carbide grades cannot

be decoated, please contact our service engineer for more information.