Polishing
Mechanical abrasion removes micro-peaks and scratches to achieve a smooth, glossy surface. Ideal for parts where appearance matters—decorative components, medical devices—and often improves corrosion resistance by reducing defect sites.
Surface treatment
Surface treatment, defined in the industrial field as the modification of the surface of materials (especially various types of metallic materials and plastics) through a series of precise physical, chemical or electrochemical methods, has become a hot topic in recent years, a process designed to achieve a particular functional or aesthetic appearance. This process is not simply coating, but by changing the chemical composition, microstructure, physical properties and even the macroscopic geometry of the material surface, so that it has the matrix material itself does not have or not outstanding excellent characteristics.
The Core Value of Metal Surface Treatment
Corrosion Resistance
Surface treatments such as galvanizing, anodizing, and powder coating protect metal parts from rust and corrosion, extending their service life.
Enhanced Appearance
High-quality surface finishes improve the visual appeal of components, making them suitable for visible and high-end applications.
Improved Performance
Treatments can enhance wear resistance, reduce friction, and improve electrical conductivity for specialized applications.
Custom Finishing
We offer tailored surface treatments to match your functional and aesthetic requirements, including color, texture, and gloss level.
With sophisticated surface treatments, ordinary materials can be endowed with“Super” properties that enable them to function in a wider range of fields and meet the demands of increasingly complex and demanding applications. Prime with its deep technology accumulation and advanced equipment, can provide customers with a variety of surface treatment solutions to ensure that products in a variety of application scenarios can perform well, to bring real added value to your products.
Prime • Surface Finishing
Common Surface Finishing Processes: Prime' Multidisciplinary Solutions
Surface finishing covers mechanical, chemical, electrochemical, and coating technologies. With decades of precision manufacturing experience, Prime provides and coordinates mainstream metal and plastic finishing options — from basic protection to high performance requirements. Explore the categories below to understand each technique and where it adds value.
1) Mechanical Finishing — Balancing Fundamentals and Fine Detail
Mechanical methods modify the surface topography to clean, beautify, or enhance performance—often forming the foundation for subsequent finishes.
Sand blasting/shot peening
The sandblasting process promotes abrasive removal of rust/oxide scales to form uniform roughness that facilitates adhesion of paint and powder coatings. Shot peening process gives compressive stress to the workpiece, thereby improving the fatigue strength and stress corrosion resistance of aerospace and automotive parts.
Brushing
Creates continuous fine grain for a satin look that disguises minor defects. Common in appliances, architectural panels, and electronics enclosures for a premium yet low-gloss texture.
2) Chemical Surface Treatments — Protective & Functional Conversion
Chemical reactions form conversion films that boost corrosion resistance or provide a robust base for coatings—excellent for complex geometries.
Chemical Oxidation (e.g., Black Oxide)
Produces a thin, dense oxide film that resists rust and improves paint adhesion. Black oxide provides both protection and a uniform dark appearance for steel parts.
Phosphating
Creates a porous phosphate conversion layer with excellent absorbency—dramatically improving paint and powder-coat adhesion and wear resistance in automotive, appliances, and machinery.
Passivation (Stainless Steel)
Forms a thin, inert film to slow corrosion—especially effective for stainless steel in chloride-rich environments—supporting long-term stability.
3) Electrochemical Treatments — Functional Plating & Films
Electroplating — precisely controlled metallic deposits to enhance corrosion resistance, wear, conductivity, reflectivity, or appearance.
Zinc Plating
Cost-effective sacrificial protection for steel—zinc corrodes first to shield the substrate. A staple for outdoor or humid environments.
Nickel Plating
Excellent corrosion/wear resistance and attractive finish. Available as bright, dull, or electroless nickel to meet appearance and functional needs.
Chrome Plating
High hardness, superb wear resistance, and brilliant gloss. Ideal for tools, furniture hardware, and parts demanding low friction and durability.
On request we also plate copper, tin, silver, and gold to achieve special conductivity, solderability, or decorative goals.
Anodizing (Aluminum)
Electrochemically forms a dense, porous oxide with superb corrosion and wear resistance—dyeable to vibrant colors for architectural, electronic, and aerospace applications.
Electrophoretic Coating (E-Coat)
An electric field deposits a uniform, highly adherent film—even on complex shapes. Strong corrosion resistance and eco-friendly performance for automotive bodies and appliances.
4) Coating Systems — Protection Meets Appearance
Organic and inorganic coatings add color, texture, and special properties while shielding the substrate.
Powder Coating
Solvent-free powder electrostatically applied and oven-cured. Delivers excellent corrosion, impact, and abrasion resistance with rich color options and sustainability benefits.
Painting / Baking
Liquid coatings sprayed for a uniform film; baking cures for tougher, glossier surfaces. A versatile route to both protection and visual differentiation.
PTFE (Teflon®) Coating
Outstanding non-stick, high-temperature, chemical resistance, and very low friction—used on molds, valves, pumps, and cookware-like applications.
DLC (Diamond-Like Carbon)
Amorphous carbon film with very high hardness, wear resistance, low friction, and chemical inertness. Extends life of precision molds, cutting tools, medical and engine parts.
5) Physical Vapor Deposition (PVD) — Thin-Film Performance
PVD uses evaporation or sputtering to transfer atoms from a source to the part, forming dense nano-scale films with exceptional hardness, wear and corrosion resistance, low friction, and biocompatibility. Typical coatings include TiN and CrN for cutting tools, dies, medical devices, aerospace, and premium decorative hardware.
How to Select the Best Finish for Your Product
- ✓ Material Type & Compatibility
Aluminum favors anodizing; steels accept a wide range of plating and chemical treatments. We verify chemical/physical properties, hardness, and conductivity before recommending a route.
- ✓ Working Environment & Performance
For humidity/saltmist/chemicals: zinc, passivation, PTFE, or PVD. For high temperature/pressure/wear: DLC, hard chrome, or PVD. For electrical needs: choose conductive or insulating finishes appropriately.
- ✓ Cost Effectiveness & Budget
From simple polishing to vacuum PVD, costs vary widely. We balance performance and budget to maximize ROI—especially for high-volume programs.
- ✓ Environmental Compliance & Sustainability
We prioritize solutions aligned with global regulations (e.g., VOC limits, hazardous substance control). Powder coating and PVD are greener options versus some legacy chemistries.
- ✓ Size, Geometry & Lot Size
Complex internal features may challenge uniform coverage for some plating/paints—chemical conversion or PVD might be better. For mass production, automation lowers unit cost and boosts consistency.
Prime's core strength: Why We were chosen for surface treatment?
By choosing Prime as your surface finishing partner, you will gain the following unique advantages to ensure that your products meet standards of excellence in surface finishing and stand out in the market:
Comprehensive one-stop surface treatment solution:
Prime not only focuses on precision stamping, casting, CNC machining and plastic parts manufacturing, but also regards surface treatment as an important extension of its core service capabilities. We can provide customers with a true one-stop solution, from the selection of raw materials, forming manufacturing to the final surface treatment, all links can be completed under our strict quality control system. This means more efficient production processes, lower coordination costs, and more consistent product quality. Whether it is CNC parts that need to improve wear resistance, or stamping parts that need anti-corrosion coating, we can provide professional integrated services to simplify your supply chain management.
Strict quality control and international certification:
Quality is the lifeline of Prime. We are fully aware of the decisive impact of surface treatment on product performance, so in all aspects of surface treatment are strictly in accordance with international quality standards. We have an ISO 9001:2015 quality management system to ensure that every step from raw material storage to the final product is rigorously tested and verified. We use advanced testing equipment and methods to strictly control key indicators such as coating thickness, adhesion, hardness and corrosion resistance to ensure that each batch of products meet the strict requirements of customers and industry standards, to provide you with reliable surface treatment services.
Highly customized surface treatment solutions:
We understand that each customer's needs are unique. Prime does not offer a one-size-fits-all solution, but rather a highly customized finish. Our engineering team will understand your product application, performance requirements, budget constraints and special environmental conditions in depth, and then combine our rich expertise and technical experience, tailor-made for you the most suitable surface treatment program. Whether it is selecting a specific coating material, adjusting process parameters, or developing a new treatment method, we are flexible to ensure that the final solution perfectly meets your needs, achieve optimal product performance and cost effectiveness.
Experienced team of surface treatment experts:
Prime has a professional team of experienced engineers and technicians, they have deep theoretical knowledge and practical experience in materials science, surface engineering and manufacturing processes. They are not only familiar with the principles and applications of various surface treatment technologies, but also able to cope with complex challenges and solve problems that may arise in the production process. Our team will provide you with all-round support from design consulting, scheme formulation to production implementation, to ensure the smooth progress and success of your project, and provide you with professional surface treatment consulting.
Advanced equipment and cutting-edge technology:
In order to provide the highest quality surface treatment services, Prime continues to invest in the introduction of international leading production equipment and technology. Whether it is high-precision electroplating production line, advanced powder coating equipment, or efficient PVD vacuum coating system, we strive to maintain the forefront of technology. These advanced equipments not only guarantee the production efficiency and product quality, but also provide a solid foundation for us to develop and apply new surface treatment technology, ensuring that your products always use the most advanced process.
By choosing Prime, you are not only choosing a supplier, but also a trusted strategic partner. With our professional service, excellent quality and innovative solutions, we will help your products to occupy a leading position in the competitive market and achieve sustainable development.
Need Help?
We're here to assist.
If you can't find what you're looking for, our support team is always ready to help with any questions you might have.
How Long is the surface treatment cycle usually?
The surface treatment cycle depends on a number of factors, including the complexity of the part, the number, the type of surface treatment process selected, and the current production load. After you provide detailed requirements, we will provide you with accurate delivery estimates to ensure that your project is on time.
Does Prime offer eco-friendly surface treatment solutions?
Yes, Prime is committed to using surface treatment technologies and materials such as powder coatings and PVD that meet international environmental standards. We always pay close attention to the latest development of the industry, and strive to provide greener and more sustainable surface treatment solutions to help enterprises achieve sustainable development goals.
How Do I know which surface finish is best for my product?
Our professional team will provide you with detailed advice and suggestions according to your product materials, operating environment, performance requirements and budget. We encourage you to provide as much information as possible so that we can tailor the best surface treatment for you. Professional surface treatment consulting is one of our core services.
Does Prime accept surface finishes for small orders?
We understand that customers may require small-batch service during the development and prototype stages. Prime has flexible manufacturing capabilities and can provide surface finishing services for small and large orders according to your specific needs. Please contact us to discuss your specific project needs.
Will the dimensional accuracy of the product be affected after surface treatment?
Most surface treatments form a thin film on the surface of the part, which may have a slight effect on the dimensions. Prime takes this into account when designing and implementing surface treatment solutions and ensures that the dimensional accuracy of the final product meets your requirements by precisely controlling the coating thickness. We will communicate with you closely to select the most appropriate process and make the necessary adjustments to ensure that the size of the precision parts meet the standards.
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