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Jingying OEM -серебряные украшения: Без никеля, Высокий поли, Пятно & Водостойкий отдел

Опубликовано в от Король

Jingying OEM -серебряные украшения: Без никеля, Высокий поли, Пятно & Водостойкий отдел

Введение

In today’s jewelry market, consumers demand not only aesthetic appeal but also safety, долговечность, и гипоаллергенные свойства. Jingying, as a leading OEM jewelry manufacturer, specializes in producing nickel-free silver jewelry с high-polish finishes, Пожарная стойкость, и water resistance. This article explores our advanced manufacturing processes, выбор материала, and quality control measures that ensure premium-quality, skin-friendly, and long-lasting jewelry.

1. Nickel-Free Silver Jewelry: Safety & Compliance

1.1 Why Nickel-Free?

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

  • Regulatory Compliance: Meets EU Nickel Directive (ДОСТИГАТЬ), California Proposition 65, и другие международные стандарты.

1.2 Materials Used in JINGYING’s Nickel-Free Jewelry

Материал Композиция Характеристики
925 серебро 925 пробы 92.5% Серебро + 7.5% Медь (Nickel-Free Alloy) Гипоаллергенный, tarnish-resistant with proper coating
Серебро Аргентиума 93.5% Серебро + 6.5% Germanium Highly tarnish-resistant, brighter than traditional sterling silver
Rhodiumed серебро 925 Серебро + Родий Scratch-resistant, ultra-shiny, Без никеля
Gold-Plated Silver 925 Серебро + 18K Золотое покрытие Роскошный внешний вид, nickel-free underlayer

1.3 Testing for Nickel Content

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

  • Xrf (Рентгеновская флуоресценция) Analysis – Ensures compliance with international standards.

2. High-Polish Finishing Techniques

2.1 Polishing Process

  1. Предварительно полишись (Rough Finishing)

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

    • Подача & Шлифование – 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?

  • Окисление: Серебро реагирует с серной в воздухе, forming black silver sulfide.

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

3.2 JINGYING’s Anti-Tarnish Solutions

Метод Как это работает Преимущества
Protective Lacquer (E-Coating) Clear epoxy/polyurethane layer blocks air exposure Invisible shield, lasts 6–12 months
Родий Electroplated rhodium layer (0.1–0.3 microns) Scratch-resistant, ultra-bright, долгоиграющий
Anti-Tarnish Silver Alloys (Argentium) Germanium reduces sulfur reaction Naturally tarnish-resistant, no coating needed
Benzotriazole (BTA) Пассивация Chemical dip forms a protective molecular layer Extends shine between cleanings

3.3 Testing Tarnish Resistance

  • Тест на соленый спрей (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

  • Ежедневная одежда: Showers, swimming, and handwashing can damage jewelry.

  • Долговечность: Prevents corrosion and loosening of gemstone settings.

4.2 JINGYING’s Waterproofing Techniques

✔ Лазерная сварка – 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. Контроль качества & Сертификация

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. Износ симуляция – Taber abrasion test for scratch resistance.

5.2 Сертификаты

  • Iso 9001 – Quality management compliance.

  • SGS/RoHS Reports – Nickel-free verification.

6. Why Choose JINGYING OEM Jewelry?

✅ 100% Nickel-Free Guarantee - Безопасно для чувствительной кожи.
✅ Premium Polish & Заканчивается – Mirror, атласный, матовый, or textured.
✅ Long-Lasting Protection – Advanced tarnish & water resistance.
✅ Custom OEM Services – From CAD design to mass production.

Заключение

Цининг комбинирует Усовершенствованная металлургия, precision polishing, и protective coatings to deliver высокое качество, nickel-free silver jewelry that resists tarnishing and water damage. Whether for fashion brands, розничные продавцы, or private labels, our OEM services ensure durable, hypoallergenic, and stunning jewelry that meets global standards.

Interested in a quote or samples? Свяжитесь с Jingying сегодня!