Plate-making: it is to make high-precision three-dimensional silver template with silver by hand according to plane drawings or samples.
Glue-opening mold: put the silver template into the glue that looks like mud at first, and then heat it at a high temperature of 200-400 degrees. What kind of glue will become like an eraser after heating, but it is softer and more elastic than an eraser, and then cut it open and take out the silver template inside, so that a glue film is ready.
Wax injection: inject melted wax into the membrane, and then open the membrane, which contains wax template.
Wax inlay: Wax inlay is only popular in recent years, and it also existed in early years, but it is relatively rare, that is, smaller diamonds or gems are embedded in wax templates.
Casting: put the wax template into a steel cylinder, then add some water to the gypsum powder, stir and pour it into the steel cylinder, then put the steel cylinder into a high-temperature furnace and bake it at a high temperature of about 650 degrees for one night. At first, the wax will melt and flow out when it meets heat, and then the gypsum will dry. This is the gypsum mold. Then the silver is melted at a high temperature of 600 -800 degrees, and then poured into a gypsum mold made in advance. When the cylinder cools down, the gypsum will be broken.
Clamping: The factory is called clamping. Actually, it's polishing. The surface is polished with 320 sandpaper. For gold, 600#- 1200# sandpaper should be used, but the size and combination should be made well before polishing, and welding should be carried out, because the castings are loose.
The size of the plate and ring is generally not very standard. They are usually assembled first and then polished. Some special ones depend on the actual situation.
Mosaic: Set precious stones or diamonds on silver ornaments as required. Common mosaics include edging, inlaid forks, terraces, compulsory mosaics, miscellaneous mosaics, borderless mosaics, Australian mosaics, princess mosaics and Tian Zi mosaics. There are always more than 30 mosaics, many of which I don't remember!
Polishing: put the cloth wheel on the motor, coat it with polishing wax, and polish the silver ornaments on it. The surface of the thrown silver ornaments is as bright as a mirror.
Finally, electroplating. Generally, jewelry factories don't have their own electroplating workshops, because there are too many chemicals used in electroplating, which causes serious pollution. Most of them are outsourced, that is, processed by other electroplating factories, so I don't know much about this! There are also gold-plated and silver-plated ones!