Metal jewelry pieces by the process described above cypress and its surface color that is color rendering. Sometimes, however, need to change the color of its surface, in order to achieve a special effect. Example, 18K gold on some famous consumption goods like cheap rolex watches demand as golden as pure gold, while the 18K white gold jewelry (white K DRC) have to the same line as platinum white, which requires surface treatment of metal jewelry - plating.
Electroplating is a relatively complicated process. It has played the role of metal surfaces to protect jewelry; metal jewelry can also enable a more beautiful surface. Sub-character of metal jewelry electroplating and different colors. Color plating is plated metal substrate color and the color of the same jewelry, jewelry metal substrate and the chemical composition of plating are basically the same. Some of the cheap replica watches products are composed and produced of these materials. For example, 18K gold-plated 18K gold jewelry, 14K gold-plated 14K gold jewelry. Leis plating refers to the color and composition of electroplating metal substrates with the jewelry colors and composition are not the same, for example, 18K gold jewelry 24K gold plated white rhodium-plated color Lust, Caution.
Electroplating is an electrolytic method of deposition of coatings with the required form of the process. The basic process of electroplating (in gold, for example) is a plate material will need to dip the metal salts (such as gold potassium cyanide) solution as a cathode. Metallic gold plate as the anode, connected to DC power supply after the coating material will be deposited metals such as gold plating.
Plating layer on the basic quality requirements:
1, with the substrate metal-binding solid adhesion.
2, coating integrity, crystal meticulous and close, a small porosity.
3, has a good physical, chemical and mechanical properties.
4, Ken-standard provisions of the coating thickness, and the coating should be evenly distributed.
In the electroplating of metal jewelry pieces before, as through a variety of processing and handling, will inevitably adhere a layer of oil and the surface of the oxide layer, which would affect oil and oxide coating quality. In order to guarantee the quality of plating out of line with plating coating, the surface must be jewelry clean dirt and oxide processing. There is an enforcement of this jewelry metal mold polishing, the surface roughness, less refined, in this material coated on the surface a very difficult combination of solid, good anti-corrosive coating, even if we manage plated coating which is a technique that is used on rolex watches for sale, in a very short period of time jewelry will be on the inside coating peeling, bubbling, there Ma points, piebald and other negative phenomena. Therefore, the pre-plating process each province should be fine.
Gold is a golden yellow precious metal; its chemical properties are very stable, not soluble in a variety of strong acid, only soluble in aqua regna. A variety of jewelry with gold plating surface has excellent protective effect, because of the excellent corrosion resistance, long-term wear is not easy to change the color. And the golden color of luxurious eye-catching, plating surface in a very beautiful rolex watches. The so-called gold plating is required under the first hungry preparation of special gold plating solution, even in a certain PH and temperature conditions, through the positive and negative electrode current and the plating liquid electrochemical reaction, so that the gold plating liquid ion gradually shifted to the jewelry metal surface process. A good preparation on the market to sell various types of plating solution. At present, domestic and foreign jewelry manufacturers make most use of cyanide plating bath and the other two categories of non-cyanide gold plating bath solution. The former toxic solution used should be extremely careful. In which cyanide plating solution is divided into high and low cyanide. High cyanide gold plating solution PH value of more than 9 known as the alkaline cyanide wow gold plating solution (high and low temperature), its PH value is 6-9 as between the neutral and weak alkaline cyanide plating solution. Low-cyanide of plating liquid, its PH value is from 3 to 6, this gold-plated
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