The casting process technology of gold jewelry is analyzed as follows:
Casting (pouring) process: This process involves pouring the gold solution into the carved and dewaxed gypsum mold to shape it into the desired style. After the mold is cast, the jewelry needs to go through a series of surface treatment processes such as mold holding, polishing and engraving, and eventually becomes a dazzling and colorful accessory. This process is currently mostly carried out in batches using casting machines, which has the advantages of high efficiency and low cost. It is suitable for making jewelry shapes with obvious concave and convex features and can meet the demands of mass production.
Lost-wax casting process: This is one of the most important production processes in the jewelry industry nowadays. The specific process includes making metal models, pressing rubber molds, injecting wax molds, planting wax trees, casting gypsum molds, and casting castings. The lost-wax casting process can replicate fine filaments and patterns, but compared with artificially forged gold jewelry, its durability is slightly inferior because the gravitational force between the gold molecular particles in artificially forged jewelry is large, and its resistance to bending is strong.
Electroforming process (3D hard gold) : It is cast using advanced hollow nano-electroforming technology. By improving the gold content, pH value, working temperature, organic brightener content and stirring speed in the electroforming solution, not only was the high purity of gold maintained, but also the hardness and wear resistance of gold were greatly enhanced. Its hardness is four times higher than that of traditional gold, and its weight is reduced by 30%. Meanwhile, the hollow effect makes it more layered and three-dimensional, with a novel and unique shape, which is deeply loved by the public.
Electroforming process (5D cyanide-free hard gold) : It is electroformed by adding cyanide-free technology on the basis of the 3D hard gold process. Its hardness is 1.5 times higher than that of traditional hard gold and can be comparable to that of K gold. It features scratch resistance, deformation resistance, easy cleaning and mirror-like luster. It has strong plasticity and can be made into more exquisite and three-dimensional jewelry styles and shapes, with extremely strong artistic value.
5G process: It is cast by adding "hard gold powder" on the basis of the mold casting process. 5G is the abbreviation of "five good", representing the five advantages of gold jewelry, namely elegance (good toughness), firmness (high hardness), talent (artistry), brilliance (bright tone), and nobility (high purity). The 5G process technology is avant-garde and highly artistic, integrating numerous advantages.