but its coating characteristics determine that the following typical problems may be faced during use. Understanding the causes can help targeted prevention:
Coating appearance problems: wear, fading and discoloration
1. The coating is worn and peeled
Long-term friction with hard objects such as clothing, desktops, etc., or frequent removal during wearing may lead to mechanical wear. For example, when wearing a gold-plated ring for housework, the dual effect of detergent and friction will accelerate the desolation of the coating.
2.Dark and faded color
Chemical corrosion: contact with perfumes, skin care products, shampoos and other substances containing sulfur and chlorine (such as alcohol in perfumes can destroy the oxide film on the surface of the coating);
Environmental factors: The sulfide in the air (such as kitchen fume) reacts chemically with the gold-plated layer to produce black gold sulfide;
Sweat effects: The electrolytes (such as sodium chloride) in human sweat will produce a micro-cell effect with the plating, which accelerates oxidation.
3. The coating changes color and turns yellow
Long-term exposure to humid environments, copper oxidation will cause uneven "copper rust color" on the surface to turn yellow, especially in the gaps.
Mild oxidation/fading treatment method:
Prepare warm water at 30℃, add a small amount of neutral dish soap (such as baby shower gel), dip the solution with a soft bristle toothbrush, gently brush the surface of the jewelry, and focus on cleaning the oxides in the gaps and depressions. Rub dry with a soft cloth after rinsing to avoid water stains.
Professional organization repair
Deplating treatment: Use chemical solutions to remove residual old plating;
Base treatment: grind the base metal to repair scratches and rust;
Multi-layer electroplating: first plating nickel or copper base to enhance the bonding force, then 24K gold plating, and finally plating a protective film (such as rhodium) to improve wear resistance;
Polishing quality inspection: polishing and quality inspection of the plating jewelry.
Maintenance points after repair
Avoid contact sources: Repaired jewelry should be kept away from corrosive substances such as perfume, cosmetics, swimming pool water;
Correct storage: Store separately in a velvet bag or jewelry box to avoid friction with other jewelry;
Regular maintenance: Wipe with a soft cloth once a month, and perform professional cleaning and maintenance every 3-6 months to extend the repair effect.
