Surface Treatment for Durable and Reliable Magnetic Assemblies
We apply specialized surface treatment processes to enhance corrosion resistance, bonding strength, and long-term reliability of magnetic assemblies. Our capabilities include electroplating and conversion coatings (such as nickel plating and phosphating), epoxy coating, and parylene coating for high-performance and precision applications.
Surface Treatment
Epoxy Coating for Magnetic Assemblies
Epoxy resin coatings, mostly black, are commonly used on the surface of permanent magnets to provide protection and beautification. The treatment process includes cleaning, grinding, painting, and drying to ensure the quality of the coating. Epoxy resin can be applied over nickel plating or directly electrophoresed onto the magnet substrate to enhance corrosion resistance and appearance.
Magnets with epoxy resin treatment on the surface are mainly used in relatively strict fields such as elevators, compressors, electric motors, etc.
High temperature resistance up to 380℃ (non-magnetic material)
Multi-color options. Besides the common black epoxy, there are also gray, red, and other colors
Salt spray resistance for 72 hours
Corrosion resistance
Solvent resistant
No hanging points
Coating thickness ranges from 15-25μm
Electroplating for Magnetic Assemblies
Electroplating is a process that utilizes the principle of electrolysis to coat a thin layer of another metal or alloy onto the surface of certain metals. It’s a craft that applies an electrolytic action to adhere a metallic film onto the surface of metal or other material components, thereby achieving effects like preventing metal oxidation (such as rusting), enhancing wear resistance, electrical conductivity, reflectivity, corrosion resistance (against copper sulfate, etc.), and enhancing aesthetics.
Protects against corrosion from extreme temps, liquids, steam, maintaining magnetic field
Guards against damage from collisions during transport or use
Energy-efficient, eco-friendly, cost-effective, and easy
Enhances corrosion resistance and lifespan
Salt spray resistant for 24 to 96 hours
Parylene Coating for Magnetic Assemblies
Parylene is a protective high molecular material that can be deposited in a vacuum by vapor phase deposition. The good penetration of the active molecules of Parylene can form a transparent insulating coating without pinholes on the inside, bottom, and around the components, providing a complete high-quality protective coating for the components. It can resist the attack of acid, alkali, salt mist, mold, and various corrosive gases. Because Parylene is not a liquid, it will not accumulate during coating, and the active small molecules will “grow” a completely conformal polymer thin film coating on the substrate surface, which has performance advantages that are difficult to compare with other coatings.
Coated with Parylene, a uniform, transparent, and extremely thin film layer can be obtained
Economical, clean, simple process, fast speed, and strong batch processing capability
Resistant to dissolution (will not dissolve in common solvents)
Can be applied to various shapes of surfaces, including sharp edges and cracks
Resistant to acid and alkali corrosion
Strong resistance to freezing (down to -200°C)
Unparalleled barrier effect (low gas permeability)
High reliability and excellent insulation strength
Increase salt spray resistance time
