Hand processing of platinum jewelry and its precautions

The platinum alloy jewelry blanks cast by jewelry molds must go through the molding process of water cutting, shaping, repairing defects, filing, sanding, etc. to become a perfect inlaid bracket. Platinum alloy jewelry is often inlaid with high-quality precious gems such as diamonds, rubies, sapphires, etc., which are high-end jewelry products. Therefore, platinum alloy jewelry blanks cast by jewelry molds for the bracket must be cut, shaped, repaired, and filed. , Sanding and other molding techniques can become the perfect inlay bracket. Platinum jewelry is often inlaid with high-quality precious gemstones such as diamonds, rubies, sapphires, etc., which are high-end jewelry products. Therefore, the overall coordination of the bracket's appearance, the smoothness of the surface, and the smoothness of the surface are more refined. Almost all metal alloy first-made materials will have a certain degree of hardening during the rolling, drawing and stamping process of cold working. Hardening is the manifestation of the internal stress of metal materials, and the common surface distortion occurs when the sheet material is rolled. , Rupture, twisting, cracking and so on when drawing the wire. The method to eliminate the hardening of platinum alloy workpieces is annealing. Annealing of platinum alloys can be performed with a general welding torch flame. To successfully anneal platinum alloys requires careful control of heating time and temperature. Most platinum alloys begin to experience stress relief at 600°C, and will soften rapidly at 1000°C. The heating time depends on the cross-sectional thickness of the workpiece, and it is sufficient to heat a workpiece with a thickness of 2 mm for about one minute. For workpieces with a thickness of more than 2 mm, the heating time should be increased proportionally. The platinum alloy will not be discolored and polluted during the annealing process. Therefore, platinum can be heat treated without the risk of forming a surface and fading film. The production of platinum alloy jewelry components, organization connection, ring modification and defect repair, etc., are mainly completed by fusion welding. Welding is the most difficult part of the platinum jewelry processing process. Because most of the fusion welding of platinum alloy materials is carried out at a temperature of 1500°C or higher. During the manual processing of platinum jewelry, the following aspects must be paid attention to: ①Foreign objects on the surface of the workpiece (contamination by other metal chips) must be prevented; ②Contaminated support frames should not be used during annealing or welding, and refractory supports should be used when welding. Charcoal cannot be used. ③Protect the eyes. The amount of white light radiation and ultraviolet radiation produced by high-temperature welding is much higher than the ability of the naked eye. Long-term radiation will cause arc burns to the eyes and may cause permanent damage to the retina. It is safer to use a filter for welding protection. Platinum alloy has strong oxidation resistance. After the jewelry is highly polished, it will never lose its dazzling luster in a static state. If after a high degree of polishing, a layer of white metal rhodium is electroplated to enhance the surface hardness. Rhodium has high reflectivity and constant brightness for a long time, making platinum alloy jewelry more dazzling. Previous: Jewelry School--Platinum Next: Platinum