Our CNC Polishing Services

Elevate your parts’ aesthetics and performance with our CNC Polishing services-l'étalon-or pour precision polishing and consistent surface finishes across industries. Tirer parti avancé automated polishing technologie, Nous transformons les métaux (acier inoxydable, titane), plastiques, composites, and glass into flawless components with Ra values as low as 0.02μm. Whether you need mirror-like medical tools, corrosion-resistant aerospace parts, or sleek consumer goods, our custom solutions blend efficiency, versatilité, and uncompromising quality—reducing manual labor and ensuring every part shines.​

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What Is CNC Polishing?

Polissage CNC is an advanced surface-finishing technologie that uses computer-controlled machines to smooth, affiner, and enhance the surface of materials—replacing manual polishing with automated precision. Unlike manual polishing (which relies on human skill and is prone to inconsistency), it uses pre-programmed tool paths and specialized abrasives to achieve uniform, repeatable results.​

Le Aperçu du processus est simple: A CNC (Contrôle numérique de l'ordinateur) system interprets design files to guide polishing tools (Par exemple, Roues de polissage, abrasive pads) across the material’s surface. The machine adjusts pressure, vitesse, and abrasive grit based on the material and desired finish—removing micro-imperfections (rayures, marques d'outils) without altering the part’s dimensions.​

To explain “Comment ça marche” simply: Imagine a robot armed with a series of fine sandpapers and buffing pads, following a digital map to polish every inch of a part. For a stainless steel medical tool, the CNC machine first uses a coarse abrasive to remove machining marks, then progresses to finer grits to create a mirror finish—all without human error. This blend of automation and precision is what makes Polissage CNC superior to manual methods, especially for complex or high-volume parts.

Our CNC Polishing Capabilities

Nous proposons une gamme complète polishing capabilities tailored to diverse materials and finish requirements, avec un accent sur niveaux de précision, surface finish quality, et la flexibilité. Vous trouverez ci-dessous une répartition détaillée de nos principales capacités:​

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Si vous avez besoin 100 titanium orthopedic implants with a 0.03μm Ra finish or 10,000 aluminum smartphone casings with a satin finish, our capabilities scale to match your project’s needs.

The CNC Polishing Process (Étape par étape)

Notre processus étape par étape is optimized to deliver consistent, high-quality finishes while preserving the part’s original dimensions:​

1. Conception et modélisation CAO: We start by reviewing your part’s CAD model and finish requirements (Par exemple, Valeur RA, finish type). Our engineers identify critical areas (Par exemple, bearing surfaces that need ultra-smooth finishes) and select the best polishing technique (mécanique, chimique, or electrochemical) for the material.​

2. Programmation de came: Le modèle CAO est importé dans le logiciel CAM (Mastercam, FAO SolidWorks) to generate chemins d'outils—mapping the polishing tool’s movement across the part. We program parameters like tool speed (500–3000 RPM), pression (1–10 n), and abrasive grit sequence (coarse → medium → fine) to achieve the desired finish.​

3. Configuration et calibrage: The part is secured in custom conception de luminaire (Par exemple, mandrins à vide pour pièces fines, soft jaws for delicate plastics) pour empêcher le mouvement. We calibrate the polishing tool’s pressure and alignment using laser sensors—ensuring it follows the tool path without altering the part’s dimensions. Abrasives and systèmes de refroidissement (for heat-sensitive materials) are loaded.​

4. Polishing Execution: The CNC machine runs the program, progressing through the abrasive sequence. Par exemple:​

• Polissage mécanique: Uses rotating buffing wheels with abrasive compounds (alumina for metals, diamond for ceramics) to remove imperfections.​

• Polissage électrochimique: Applies an electric current and chemical solution to dissolve surface imperfections (ideal for stainless steel medical parts).​

• Vibratory Polishing: Tumbles small parts with abrasive media (Perles en céramique) for uniform finishing (great for high-volume small components like brass connectors).​

Post-Polishing Inspection: Les pièces sont soumises à des contrôles rigoureux contrôle de qualité—we measure surface roughness with a profilometer, check for uniformity with an optical comparator, and verify dimensions with a CMM. Parts that meet the Ra requirement move to final packaging; those that don’t are reworked with adjusted parameters.

Matériaux avec lesquels nous travaillons

Polissage CNC works with almost every material, but the technique and abrasives vary based on the material’s hardness and properties. Vous trouverez ci-dessous une ventilation de nos matériaux pris en charge, recommended polishing techniques, and ideal finishes:​

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Traitement de surface & Options de finition

Polissage CNC is often paired with complementary traitement de surface techniques to enhance durability, esthétique, ou fonctionnalité. Below are our most popular finishing options, along with their benefits and ideal uses:​

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Par exemple, we use electrochemical polishing for stainless steel medical tools (Pour assurer la résistance à la corrosion) and brushed finishing for aluminum smartphone casings (to hide fingerprints while maintaining a sleek look).

Tolérances & Assurance qualité

Tolérances for CNC Polishing focus on two key metrics: rugosité de surface (Valeur RA) et stabilité dimensionnelle (ensuring polishing doesn’t alter the part’s original dimensions). Notre processus de contrôle de qualité are designed to meet strict industry standards:​

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Notre processus de contrôle de qualité inclure:​

• Pré-polissage: Inspecting parts for initial surface condition (Par exemple, machining marks, rayures) and verifying dimensions.​

• En cours: Real-time Ra measurement with laser profilometers (adjusting tool pressure/speed if Ra deviates from target).​

• Post-polishing: 100% inspection pour les pièces critiques (médical, aérospatial); statistical sampling (5–10%) pour des pièces à volume élevé. We also conduct adhesion tests (for coated parts) and corrosion tests (pour les métaux).​

Documentation: Providing a finish report with every order, including Ra values, measurement locations, and compliance certificates.

Key Advantages of CNC Polishing

Compared to manual polishing or other finishing methods, Polissage CNC offers unmatched benefits for consistency, efficacité, et la qualité:​

1. Haute précision: Achieves surface roughness as low as 0.02μm—critical for parts like optical lenses (where even tiny imperfections affect performance) ou implants médicaux (where smooth surfaces reduce tissue irritation).​

2. Cohérence et répétabilité: CNC programming ensures every part has the same finish—no variation from part to part (unlike manual polishing, where results depend on the operator’s skill).​

3. Géométries complexes: 5-axis CNC polishing heads reach internal cavities, surfaces courbes, and undercuts—finishing areas manual methods can’t access (Par exemple, the inside of a titanium knee implant).​

4. Temps de configuration réduit: CAM programming and automated tool changes cut setup time by 60–80% compared to manual polishing—ideal for high-volume runs (Par exemple, 10,000 aluminum casings).​

5. Increased Efficiency: Les machines CNC fonctionnent 24/7 with minimal supervision—producing 3–5x more parts per hour than manual polishers.​

6. Versatilité: Works with almost every material (métaux, plastiques, verre, composites) and can create any finish (miroir, satin, brossé).​

7. Rentabilité: While upfront costs are higher than manual polishing, reduced labor costs (no need for skilled operators) and lower rework rates (fewer inconsistent parts) save money long-term—especially for high-volume orders.​

8. Improved Surface Finish: Removes micro-imperfections (machining marks, rayures) that manual polishing misses—enhancing aesthetics and functionality (Par exemple, smooth surfaces reduce friction in moving parts).​

9. Esthétique améliorée: Creates uniform, professional finishes that boost product value—critical for consumer goods (Par exemple, smartphones, bijoux) et parties décoratives.

Reduced Manual Labor: Eliminates repetitive, labor-intensive manual polishing—reducing worker fatigue and improving workplace safety.

Applications de l'industrie

Polissage CNC is used across industries where surface finish impacts performance, esthétique, or compliance. Voici ses applications les plus courantes:​

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Advanced Manufacturing Techniques in CNC Polishing

To deliver exceptional finishes across diverse materials and geometries, we leverage specialized techniques de polissage and optimized processes:​

9.1 Core Polishing Techniques​

• Polissage mécanique:​

The most versatile technique—uses rotating tools (Roues de polissage, abrasive pads) with graded grits (80–10,000 grit) Pour éliminer les imperfections de surface. We tailor tools to material:​

• Buffing Wheels: Cotton/polyester wheels for metals (acier inoxydable, laiton) to create mirror finishes; foam wheels for plastics to avoid melting.​

• Abrasive Pads: Diamond-impregnated pads for hard materials (céramique, verre); alumina pads for metals; silica pads for composites.​

• Application: Idéal pour les grandes pièces (aerospace panels) and high-volume runs (garniture automobile).​

• Polissage électrochimique (ECP):​

Uses an electrolytic cell (part as anode, conductive tank as cathode) and a specialized electrolyte (Par exemple, phosphoric acid for stainless steel). When current is applied, surface metal dissolves uniformly—removing tool marks and creating a passive oxide layer.​

• Avantage: No contact (avoids part distortion) and enhances corrosion resistance.​

• Application: Outils médicaux (acier inoxydable), food-grade parts (laiton), and parts with internal cavities (implants en titane).​

• Polissage chimique:​

Uses acid/base solutions (Par exemple, nitric acid for copper, sodium hydroxide for plastics) to etch away surface flaws. Unlike ECP, it requires no electricity—parts are dipped or sprayed with the solution, then rinsed.​

• Avantage: Rapide, low-cost for small, parties complexes (Par exemple, plastic electronics connectors).​

• Application: Copper heat exchangers, ABS plastic casings, and brass decorative parts.​

• Vibratory Polishing:​

Places small parts (Par exemple, épingles en laiton, medical needles) in a vibrating tub filled with abrasive media (Perles en céramique, plastic chips) and a polishing compound. Vibration causes media to rub against parts, creating a uniform finish.​

• Avantage: Faible (unattended operation) and consistent results for high-volume micro-parts.​

• Application: Connecteurs électroniques (laiton), jewelry findings (gold-plated brass), and medical micro-components.​

• 5-Axis CNC Polishing:​

Uses a 5-axis machine (3 linéaire + 2 rotary axes) with a flexible polishing head (Par exemple, foam or felt) to reach complex geometries—internal cavities, sous-dépouille, et surfaces incurvées (Par exemple, titanium knee implants).​

• Avantage: Finishes areas manual or 3-axis polishing can’t access.​

• Application: Lames de turbine aérospatiale (inconel), implants orthopédiques (titane), and optical molds (acier).​

9.2 Supporting Technologies​

• Abrasive Selection:​

Grit size and material determine finish quality:​

• Coarse grit (80–240): Supprime les marques d'usinage (initial step).​

• Medium grit (400–800): Smooths surface (intermediate step).​

• Fine grit (1000–10 000): Creates desired finish (dernière étape).​

Pour les matériaux durs (céramique, verre), we use diamond abrasives; for soft materials (aluminium, plastiques), we use alumina or silica.​

• Systèmes de liquide de refroidissement:​

Empêche la surchauffe (critical for plastics and soft metals):​

• Water-Based Coolants: For mechanical polishing of metals—reduces friction and flushes away abrasive debris.​

• Oil-Based Coolants: For plastics—avoids warping and improves finish uniformity.​

• Mist Coolants: For 5-axis polishing of micro-parts—delivers a fine mist to avoid residue buildup.​

• Conception de luminaire:​

Custom fixtures ensure parts stay stable during polishing:​

• Chucks de l'aspirateur: Pour les parties minces (feuilles d'aluminium, glass panels) to avoid deformation.​

• Soft Jaws: For delicate plastics (polycarbonate) and polished metals (laiton) to prevent scratches.​

Magnetic Fixtures: For ferrous metals (steel dies) to enable fast setup.

Études de cas: CNC Polishing Success Stories

Notre CNC Polishing services have solved finish challenges for clients across medical, aérospatial, et industries de biens de consommation. Vous trouverez ci-dessous deux Projets réussis showcasing our expertise:​

Étude de cas 1: Medical Device Company (Stainless Steel Surgical Scissors)​

• Défi: Le client avait besoin 50,000 stainless steel surgical scissors monthly—requiring a mirror finish (Ra ≤ 0.05μm) for corrosion resistance and easy sterilization. Their previous supplier used manual polishing, which caused 12% of scissors to have inconsistent finishes (some too rough, some with scratches) and failed FDA compliance checks. Lead time was 4 semaines, delaying product launches.​

• Solution: Nous avons utilisé polissage électrochimique (ECP)—the scissors were mounted on a custom fixture and submerged in a phosphoric acid electrolyte. We programmed the ECP system to apply 12V current for 3 minutes (optimized for stainless steel), then rinsed and passivated the scissors to enhance corrosion resistance. We added in-line laser profilometers to inspect Ra values in real time, rejecting parts with Ra > 0.05μm.​

• Résultats:​

• Finish consistency improved from 88% to 99.8%—only 100 scissors failed per month (contre. 6,000 previously).​

• The scissors passed FDA compliance (corrosion resistance test: 500+ hours in salt spray).​

• Lead time shortened from 4 des semaines pour 10 days—helping the client meet launch deadlines.​

• Témoignage client: “CNC ECP transformed our scissors’ quality. The mirror finish is perfect every time, and the FDA approval was seamless. We’ve expanded our order to include hemostats and forceps.” — Maria L., Medical Device Production Manager.​

• Before and After: Manual polished scissors had visible scratches and uneven shine; ECP scissors featured a uniform mirror finish that resisted rust and simplified sterilization.​

Étude de cas 2: Consumer Electronics Brand (Aluminum Smartphone Casings)​

• Défi: Le client avait besoin 100,000 aluminum smartphone casings monthly—requiring a brushed finish (Ra 0.15μm, linear grain) to hide fingerprints and match their brand aesthetic. Their previous supplier used manual brushing, which caused 15% of casings to have misaligned grain (some curved, some uneven) and inconsistent Ra values (0.1–0.3μm). The client needed a 2-week lead time to support their phone launch.​

• Solution: Nous avons utilisé 5-axis CNC mechanical polishing—equipping the machine with a linear abrasive pad (800 grincer) and programming it to create parallel grain lines (0.5MM à part) across the casing’s curved surfaces. We used a custom vacuum fixture to secure the casings (avoiding scratches) and water-based coolant to prevent aluminum oxidation. We sampled 1% of casings hourly with a profilometer to ensure Ra stayed at 0.15μm.​

• Résultats:​

• Grain alignment accuracy improved from 85% to 99.5%—only 500 casings had misaligned grain (contre. 15,000 previously).​

• Ra uniformity was maintained at ±0.02μm (all casings 0.13–0.17μm)—meeting the brand’s strict aesthetic standards.​

• Lead time was met (2 semaines)—enabling the client’s on-schedule phone launch.​

• Challenge Overcome: Manual brushing couldn’t follow the casing’s curved edges; 5-axis CNC ensured grain lines stayed straight and uniform across all surfaces.​

Témoignage client: “The brushed casings look identical to our design specs—no more customer complaints about fingerprint visibility. The consistency and speed have made them our sole supplier for aluminum parts.” — David K., Consumer Electronics Procurement Director.

Why Choose Our CNC Polishing Services?

With numerous CNC polishing providers, here’s what sets us apart as a trusted partner for medical, aérospatial, and consumer industries:​

• Expertise in CNC Polishing: Notre équipe a 18+ years of specialized experience—we master all core techniques (mécanique, ECP, chimique, vibratory) and tailor them to material properties. Nos ingénieurs sont certifiés en AS9100 (aérospatial) et ISO 13485 (médical) and can solve complex challenges (Par exemple, 0.02μm finishes for optical glass, brushed grain on curved aluminum).​

• Experience in Various Industries: Nous avons servi 650+ clients à travers 10 industries—from small medical startups to Fortune 500 electronics brands. This cross-industry experience means we understand sector-specific needs: FDA compliance for medical parts, scratch resistance for consumer goods, and corrosion resistance for aerospace components.​

• High-Quality Equipment: We invest in state-of-the-art machines—12 CNC polishing systems (y compris 5 5-machines à axe), 8 ECP tanks, 5 vibratory polishing tubs, and in-line laser profilometers. All equipment is calibrated weekly (using NIST-traceable standards) to maintain precision.​

• Excellent service client: Notre équipe est disponible 24/7 to support your project—from finish selection (helping you choose the right Ra value) au suivi post-livraison. We offer free sample polishing (jusqu'à 5 parties) so you can verify finish quality before placing large orders. Pour des projets urgents (Par exemple, medical supply shortages), we assign a dedicated project manager.​

• Temps de revirement rapide: Our optimized processes deliver industry-leading lead times:​

• Prototypes (1–100 pièces): 1–3 jours

• À faible volume (100–1 000 pièces): 3–7 jours

• Volume élevé (1,000+ parties): 7–14 jours

Pour les ordres de pointe (Par exemple, consumer goods launches), Nous pouvons livrer 10,000+ des pièces dans 5 days by running machines 24/7.​

• Solutions rentables: We help you save money through:​

• Automation: Unattended operation (vibratory, ECP) reduces labor costs by 60% contre. manual polishing.​

• Abrasive Optimization: Reusing fine grit abrasives (for final steps) cuts material costs by 20%.​

• Volume discounts: 10% off orders over 10,000 pièces et 15% off orders over 50,000 parts—ideal for consumer electronics and medical high-volume runs.​

Commitment to Quality: Nous sommes ISO 9001, AS9100, et ISO 13485 certified—our processus de contrôle de qualité assurer 99.9% of parts meet your finish requirements. We also provide full traceability (each batch’s Ra reports, process logs) pour la conformité.

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