Our Metal Parts Painting ProcessOur meticulous process ensures exceptional adhesion, durability, and a flawless finish, all while adhering to the stringent quality requirements of medical device manufacturing: Thorough Cleaning & Preparation: We rigorously degrease, rinse, and apply specialized conversion coatings to ensure pristine, corrosion-resistant surfaces ready for paint.Primer & Topcoat Application: Depending on requirements, we apply high-performance primers followed by medical-grade topcoats (e.g., epoxy, polyurethane, powder coatings) in climate-controlled cleanrooms.Curing: Parts are precisely cured in ovens to achieve optimal paint hardness and durability.Rigorous Quality Inspection: Every part undergoes comprehensive checks for visual defects, adhesion, film thickness, hardness, and biocompatibility, with final production meeting relevant ISO standards such as ISO 13485 for quality management systems in medical devices, and ISO 10993 for biological evaluation of medical devices.Benefits of Painting Medical Metal PartsPainting metal parts for medical applications offers vital advantages:Enhanced Corrosion Resistance: Protects against moisture, disinfectants, and bodily fluids, extending product life.Improved Biocompatibility: Utilizes inert, non-toxic coatings for patient safety, compliant with ISO 10993.Enhanced Cleanability & Sterilization: Creates smooth, non-porous surfaces for easier disinfection and reduced contamination risk.Aesthetic Appeal & Brand Identity: Provides a professional finish and allows for functional color coding.Wear & Chemical Resistance: Increases surface hardness and protection against abrasion and harsh chemicals, crucial for repeated use and sterilization. Our painting process, backed by ISO 13485 certification, ensures your medical components meet the highest standards for reliability, safety, and regulatory compliance.

1. CNC Machine (Computer Numerical Control Machine)Use: CNC machines are used for precision machining, including cutting, drilling, milling, and turning metal parts.Function:Operates using programmed instructions to shape raw metal into finished components.Can handle complex designs with high accuracy.Process Advantages:High precision and repeatability.Reduces human error and increases efficiency.Can produce intricate and detailed parts.2. Bender MachineUse: Used for bending metal sheets, pipes, and profiles into desired angles and shapes.Function:Applies force to a metal workpiece to create curves or bends without cutting.Common in sheet metal fabrication, automotive, and construction industries.Process Advantages:Maintains material integrity with smooth bends.Fast and efficient shaping process.Reduces the need for welding or assembly.3. Laser Cutting MachineUse: Ideal for cutting thin to medium-thickness metal sheets with high precision.Function:Uses a focused laser beam to cut through metal with extreme accuracy.Suitable for detailed and intricate designs. Process Advantages:High-speed and precise cutting.Minimal material wastage.Can cut complex patterns without post-processing. 4. Plasma Cutting MachineUse: Cuts through thick metal sheets, such as steel, aluminium, and copper, using high-temperature plasma.Function:Ionized gas (plasma) is used to melt and remove metal, making clean cuts.Suitable for industrial and heavy-duty applications.Process Advantages:Fast cutting speed for thick metals.More cost-effective than laser cutting for heavy materials.Works on conductive metals regardless of reflectivity.5. Stamping MachineUse: Mass production of metal parts with precise shapes, such as automotive and appliance components.Function:Uses a die and punch system to stamp or press metal sheets into specific forms.Can include processes like punching, embossing, and bending.Process Advantages:High-speed production.Consistent and repeatable shapes.Cost-effective for large-scale manufacturing.6. Welding MachineUse: Joins metal parts permanently through heat and pressure.Function:Uses electrical current, gas, or laser to fuse metal components together.Common in construction, automotive, and heavy machinery industries.Process Advantages:Strong and permanent metal bonding.Versatile for various metals and thicknesses.Essential for structural applications.7. Metal Extrusion MachineUse: Produces long metal profiles, such as rods, tubes, and frames, with a uniform cross-section.Function:Forces heated metal through a die to create continuous shapes.Used for aluminium, copper, and steel extrusion in construction and automotive industries.Process Advantages:Produces lightweight, high-strength components.Allows complex cross-sectional shapes.Reduces material waste. 

Types and usesANODIZING PROCESSAnodizing is performed through electrolysis, where the metal part is submerged in an electrolytic solution and subjected to an electrical current. The key steps in the process include:Surface Preparation – Cleaning and degreasing the metal to remove contaminants.Electrolytic Bath Immersion – The metal serves as the anode, placed in an acid electrolyte (typically sulfuric, chromic, or phosphoric acid).Oxide Layer Formation – A controlled electrochemical reaction leads to the formation of a thick, porous oxide layer.Sealing – The porous surface is sealed using hot water, steam, or nickel acetate to improve durability and prevent contamination.Types of AnodizingAnodizing processes vary based on the electrolyte composition and process parameters, leading to different oxide layer properties. The three primary types include: 1. Type I (Chromic Acid Anodizing)Uses chromic acid as the electrolyte.Produces a thin but highly corrosion-resistant oxide layer.Commonly used in aerospace applications due to its minimal impact on material fatigue. 2. Type II (Sulfuric Acid Anodizing)Uses sulfuric acid, the most widely used anodizing method.Creates a moderate thickness (typically 5-25 microns) and can be dyed for aesthetic purposes.Used in automotive, architectural, and consumer electronics applications. 3. Type III (Hard Anodizing / Hard coat Anodizing)Employs sulfuric acid under higher voltage and lower temperatures.Forms an extra-thick, wear-resistant layer (25-100 microns) with excellent hardness and durability.Suitable for high-performance applications like military, industrial machinery, and aerospace components.Durability and PerformanceThe durability of anodized coatings depends on factors like thickness, sealing, and environmental exposure. Hard anodizing (Type III) offers the best abrasion resistance and longevity, while chromic acid anodizing (Type I) provides superior fatigue strength with minimal dimensional impact.Key durability aspects include:Corrosion Resistance – Anodized aluminium resists oxidation and chemical exposure.Wear Resistance – Hard anodizing significantly enhances surface hardness.UV Stability – Certain anodized finishes withstand prolonged sunlight exposure.Thermal Insulation – The oxide layer offers improved heat dissipation.Industrial Applications Anodized materials are widely used across industries due to their enhanced properties:Medical Devices – Biocompatible and easy-to-clean surfaces for surgical instruments.Aerospace – Lightweight, corrosion-resistant aircraft components.Electronics – Durable, non-conductive coatings for smartphones, laptops, and circuit boards.Automotive – Protective coatings for engine parts, wheels, and trims.Construction & Architecture – Anodized aluminium facades, railings, and window frames for longevity.ConclusionAnodizing is a critical surface treatment that enhances the durability, aesthetics, and performance of metal components. With various types available, industries can select the most suitable anodizing method based on their specific corrosion resistance, wear resistance, and design requirements. As technology advances, anodizing continues to evolve, offering even greater benefits for modern manufacturing and engineering applications.ALODINE PROCESSThe Alodine process, also known as chromate conversion coating, is a chemical treatment used on Aluminium and other metals to enhance corrosion resistance and prepare surfaces for painting or other coatings. Unlike anodizing, it does not require electricity, making it a simpler and more cost-effective option for specific applications.Key BenefitsCorrosion Protection: Adds a protective layer that improves longevity.Conductivity: Unlike anodizing, Alodine retains the metal’s conductive properties.Ease of Application: Ideal for intricate shapes and smaller parts.