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Jingying OEM Silver Jewelry: 니켈 프리, 폴란드, 흐림 & 방수 마감

게시 ~에 의해 Kingjy

Jingying OEM Silver Jewelry: 니켈 프리, 폴란드, 흐림 & 방수 마감

소개

In today’s jewelry market, consumers demand not only aesthetic appeal but also safety, 내구성, and hypoallergenic properties. 징징, as a leading OEM jewelry manufacturer, specializes in producing nickel-free silver jewelry ~와 함께 high-polish finishes, tarnish resistance, 그리고 water resistance. This article explores our advanced manufacturing processes, material selection, and quality control measures that ensure premium-quality, skin-friendly, and long-lasting jewelry.

1. Nickel-Free Silver Jewelry: Safety & 규정 준수

1.1 Why Nickel-Free?

  • Skin Safety: Nickel is a common allergen, causing contact dermatitis in 10–20% of the population.

  • Regulatory Compliance: Meets EU Nickel Directive (REACH), California Proposition 65, and other international standards.

1.2 Materials Used in JINGYING’s Nickel-Free Jewelry

Material 구성 Properties
925 스털링 실버 92.5% 은 + 7.5% Copper (Nickel-Free Alloy) hypoallergenic, tarnish-resistant with proper coating
아르헨티늄은 93.5% 은 + 6.5% Germanium Highly tarnish-resistant, brighter than traditional sterling silver
Rhodium-Plated Silver 925 은 + Rhodium Plating Scratch-resistant, ultra-shiny, nickel-free
Gold-Plated Silver 925 은 + 18K Gold Plating 고급스러운 외관, nickel-free underlayer

1.3 Testing for Nickel Content

  • DMG Test (Dimethylglyoxime Spot Test) – Detects nickel leaching.

  • XRF (X-Ray Fluorescence) Analysis – Ensures compliance with international standards.

2. High-Polish Finishing Techniques

2.1 Polishing Process

  1. Pre-Polishing (Rough Finishing)

    • Tumbling – Barrel polishing with stainless steel media for initial smoothing.

    • Filing & Sanding – Removing casting seams with 600–1200 grit sandpaper.

  2. High-Polish Buffing

    • Muslin Wheel + Diamond Compound – Achieves mirror-like shine.

    • Ultrasonic Polishing – For intricate designs.

2.2 Advanced Finishing Options

  • Mirror Polish – Reflective, ultra-smooth surface.

  • Satin Finish – Soft, brushed look.

  • Florentine Finish – Cross-hatched texture.

3. Tarnish-Resistant Coatings

3.1 Why Jewelry Tarnishes?

  • Oxidation: Silver reacts with sulfur in the air, forming black silver sulfide.

  • Moisture & Chemicals: Perfume, sweat, and chlorine accelerate tarnishing.

3.2 JINGYING’s Anti-Tarnish Solutions

Method How It Works 이익
Protective Lacquer (E-Coating) Clear epoxy/polyurethane layer blocks air exposure Invisible shield, lasts 6–12 months
Rhodium Plating Electroplated rhodium layer (0.1–0.3 microns) Scratch-resistant, ultra-bright, long-lasting
Anti-Tarnish Silver Alloys (Argentium) Germanium reduces sulfur reaction Naturally tarnish-resistant, no coating needed
Benzotriazole (BTA) Passivation Chemical dip forms a protective molecular layer Extends shine between cleanings

3.3 Testing Tarnish Resistance

  • Salt Spray Test (ASTM B117) – Simulates years of wear in 24–48 hours.

  • Sulfur Chamber Test – Accelerates tarnish formation for quality checks.

4. Water-Resistant Jewelry

4.1 Why Water Resistance Matters

  • Daily Wear: Showers, swimming, and handwashing can damage jewelry.

  • 장수: Prevents corrosion and loosening of gemstone settings.

4.2 JINGYING’s Waterproofing Techniques

✔ Laser Welding – Ensures secure seams (no solder weak points).
✔ Waterproof Sealants – Silicone-based coatings for added protection.
✔ Enhanced Prong Settings – Prevents gemstones from loosening in water.

4.3 Water Resistance Testing

  • Immersion Test – Submersion in water for 24 hours to check for damage.

  • Steam Test – Exposes jewelry to high humidity.

5. 품질 관리 & Certification

5.1 JINGYING’s QC Process

  1. Material Inspection – XRF testing for metal purity.

  2. Surface Check – Microscope inspection for polishing defects.

  3. Coating Adhesion Test – Tape peel-off (ASTM D3359).

  4. Wear Simulation – Taber abrasion test for scratch resistance.

5.2 인증

  • ISO 9001 – Quality management compliance.

  • SGS/RoHS Reports – Nickel-free verification.

6. Why Choose JINGYING OEM Jewelry?

✅ 100% Nickel-Free Guarantee - 민감한 피부에 안전합니다.
✅ Premium Polish & Finishes – Mirror, satin, 매트, or textured.
✅ Long-Lasting Protection – Advanced tarnish & water resistance.
✅ Custom OEM Services – From CAD design to mass production.

결론

JINGYING combines advanced metallurgy, precision polishing, 그리고 protective coatings to deliver high-quality, nickel-free silver jewelry that resists tarnishing and water damage. Whether for fashion brands, retailers, or private labels, our OEM services ensure durable, hypoallergenic, and stunning jewelry that meets global standards.

Interested in a quote or samples? Contact JINGYING today!