316l Stainless Steel Electroplating Polishing Cnc Milling Metal Beauty Needle

Product Description

The 316L Stainless Steel Plated and Polished CNC Milled Metal Beauty Needle is a high-end, precision-crafted aesthetic instrument. It combines the biocompatibility and corrosion resistance of medical-grade 316L stainless steel with advanced manufacturing and finishing techniques. The core needle structure is精密machined via CNC milling for exact dimensions and geometry. It then undergoes a specialized plating process (such as gold, titanium nitride, or rhodium) for enhanced surface properties, followed by high-gloss polishing to achieve a flawless, mirror-like finish. This combination results in a needle that is not only highly functional for precise procedures but also exhibits superior durability, smoothness for reduced skin trauma, and a premium aesthetic appeal suitable for luxury beauty treatments.

Product Processing

1. CNC Milling of 316L Substrate: The needle body is精密machined from a solid rod of 316L stainless steel using high-precision CNC milling centers or CNC Swiss lathes. This creates the exact needle profile, including any tapers, hubs, or connection features.

2. Pre-Plating Surface Preparation: The machined needle undergoes rigorous cleaning and surface activation. This typically involves precision polishing to a specific Ra value, followed by ultrasonic cleaning and electrocleaning to remove all contaminants and oxides, ensuring perfect adhesion for the plating layer.

3. Specialized Electroplating: The needle is plated using an electrochemical process. Common luxury/medical platings include:

   • 24K Gold Plating: For hypoallergenic properties, corrosion resistance, and a premium appearance.

   • Titanium Nitride (TiN) or Zirconium Nitride (ZrN) Coating (PVD): For extreme hardness, wear resistance, and a distinctive gold/champagne color.

   • Rhodium Plating: For a brilliant, white, tarnish-resistant finish.

4. Post-Plating Precision Polishing: The plated surface undergoes a multi-stage mechanical polishing process using progressively finer abrasives and buffing compounds. This step removes any microscopic imperfections from the plating, achieving a perfect mirror finish (Ra < 0.025 µm) that minimizes skin drag.

5. Sterilization-Prep Finishing & Cleaning: A final ultra-sonic cleaning in deionized water and medical-grade solvents removes all polishing residues. The needle is then packaged in a cleanroom environment suitable for terminal sterilization.

6. Quality Inspection: 100% visual inspection under high-intensity light and magnification for surface defects, plating uniformity, and polish quality. Dimensional checks and adhesion tests (per ASTM B571) are performed on samples.

Product Applications

• High-End Microneedling (Dermarolling/Dermastamping): As the核心needles in automated pens or as individual stamp needles for collagen induction therapy.

• Mesotherapy & Bio-Revitalization: For intradermal delivery of cocktails, vitamins, or PRP (Platelet-Rich Plasma).

• Permanent Makeup & Microblading: As precision needles for pigment implantation in eyebrows, eyeliner, and lip blush procedures.

• Thread Lifting: As the guidance or delivery component for absorbable PDO/PLLA threads.

• Luxury Acupuncture & Traditional Medicine: For practitioners seeking tools with superior finish, durability, and a premium feel.

Product Technical Parameters (Detailed Table)

Category	Parameter	Specification / Details
Core Material	Substrate	316L Stainless Steel (UNS S31603, 1.4404) – Medical Grade, Vacuum Melted optional.
Plating & Coating	Plating Types	24K Gold (Au), Titanium Nitride (TiN - PVD), Zirconium Nitride (ZrN - PVD), Rhodium (Rh).
	Plating Thickness	0.5 µm – 2.5 µm (Standard range. Gold typically 1.0-1.5µm).
	Adhesion Standard	Passes ASTM B571 bend test or equivalent.
	Key Plating Benefits	Gold: Hypoallergenic, noble finish. TiN/ZrN: Extreme hardness (~80+ HRC equivalent), wear-resistant. Rhodium: Brilliant white, anti-tarnish.
Dimensions & Geometry	Needle Gauge (OD)	32G (0.23mm), 34G (0.18mm) for fine needles; 30G (0.30mm) common for microneedling. Custom diameters.
	Length (Exposed)	0.25mm, 0.5mm, 1.0mm, 1.5mm, 2.0mm (for microneedling); up to 10-40mm for other applications.
	Tip Geometry	Lancet Point (sharp), Chisel Point (for microblading), Multi-tip configurations (e.g., 5, 9, 12 needles clustered).
Surface Finish	Final Polish Grade	Mirror Polish. Surface Roughness (Ra) < 0.025 µm.
	Gloss Level	High specular reflectance.
Performance	Primary Function	Precise, low-trauma skin penetration for delivery or stimulation.
	Sharpness	Surgical-grade sharpness, maintained post-plating and polishing.
	Corrosion Resistance	Exceptional. 316L substrate + noble metal plating provides maximum protection against bodily fluids and disinfectants.
	Durability	Plating (especially TiN/ZrN) significantly increases surface hardness, reducing blunting and extending usable life.
Biocompatibility & Safety	Overall Biocompatibility	316L substrate and specified platings (Au, Rh, TiN) are biocompatible per ISO 10993-1.
	Nickel Release	316L has low nickel content; noble metal plating forms a complete barrier, ensuring nickel-free patient contact surface.
Sterilization & Packaging	Sterilization Compatibility	Compatible with all standard methods: Autoclave (121°C/134°C), Dry Heat, Gamma Irradiation, Ethylene Oxide (ETO), Low-Temperature Plasma.
	Packaging	Individually blister packed in sterile barrier (Tyvek®/plastic) for single-use, or in sterile/non-sterile racks for reusable devices.
Quality Assurance	Inspection	100% visual for polish/plating defects under 10x-30x magnification. Dimensional sample testing.
	Plating Tests	Thickness (XRF), Adhesion (tape/bend test), Porosity (ferroxyl test for nickel barrier).
	Certification	Material Certs (3.1), Plating Process Certs, Biocompatibility test reports available upon request.
	Regulatory	Manufactured under ISO 13485 quality system. Supports FDA and CE MDR documentation.