Manufacturing technology of gold bracelet:

1, concept map, jewelry designers will combine the market demand, conceive some design drawings, and the process will take as few as a few days and as many as a few months, and then select several satisfactory designs from many design drawings for processing.

2. Cutting. If it is a gold bracelet, you need to melt the gold, melt the gold bars into liquid, then pour them into a grinding tool for molding, and adjust the thickness and width through a tablet press.

3. Molding: There are many styles of bracelets, such as hemming and loops. And the manufacturing process is different. It can be directly die-cast and pressed by gravity using the shape in the grinding tool. This process is faster, but the style is more traditional, and different styles need different molds. Now using cnc smart bracelet equipment, you can draw pictures directly on the computer and import them into the equipment computer in CAD format. The device can actively convert G code to realize accurate batch printing. This technology can change styles at any time, save time, improve motivation, and its main function is convenience.

4. Beat and grind, hammer the jewelry, and then file it flat to make the gold jewelry more delicate and smooth. Sandpaper is used to polish all dead corners, and tools such as grinding needle, grinding wheel and disc grinding wheel are used for fine grinding and further shaping.

5. Polishing: soak it in dilute hydrochloric acid, take it out and polish it with fine craftsmanship. After repeated polishing, it will flow, so that Seiko's jewelry has a smooth feel and silky texture.

6. Drying: put the product into a steam engine for high temperature treatment, and then dry it.

Method for make silver bracelet:

1. Melted silver: Raw silver is usually large. First, large pieces of silver must be broken, put into a crucible and melted in a furnace. After the silver began to melt, the copper mold was cast in a crucible with a long handle.

2. Forging: Start forging into the shape required by the center while it is hot. This step needs to be repeated many times, because the required shape cannot be forged at one time.

3. Blanking: According to the designed silver artwork, the silver piece is slightly larger than the designed artwork, leaving a certain processing allowance.

4. Making lead clips: The role of lead clips is to clip silver pieces that need further production and processing. Put the rough pieces of silver into the sand box in reverse, inject molten lead into it and cool it.

5. Finishing: This process includes hammering, chiseling, carving, weaving and other processes, which is the most critical step in the whole process. This process is also called "carving". The tools used for carving are a small hammer and several chisel heads, which are pointed, round, flat, crescent-shaped, petal-shaped and so on, and can be selected according to needs. When processing, the hammer is held in the hand, like a painter's pen, and the palms correspond to each other, carving a group of vivid patterns. The key to the quality of silver jewelry is at this time. The subtleties of carving show the carefulness and precision of the craftsman. Among them, filigree weaving tests the master's carefulness and endurance, and every piece of braided jewelry is the result of mental and physical strength.

6. Welding: The silver ornaments that need to be welded shall be dipped in flux at the interface and welded with a welding gun.

7. Silver washing: After repeated patting and barbecue, the surface of silver ornaments will be black or stained with impurities. Heat the silver ornaments at high temperature, then put them into acidic solution, take them out, put them into clean water and brush them with a copper brush to make them white and bright.