Hasung- VPC Series Jewelry Vacuum Pressure Casting Machine

1. Design and Mold Making: Design the jewelry on the computer and create a 3D model. Then, make a silicone rubber mold from the 3D-printed model or physical prototype.

2. Wax Injection: Heat the wax to a molten state, usually around 70-75°C, and inject it into the silicone mold using a wax injection machine. After the wax cools and solidifies, remove the wax model from the mold and check for any flaws.

3. Wax Model Trimming: Use tools like a surgical blade to remove any flash, excess wax, or other minor defects on the surface of the wax model. For larger flaws like sand holes or broken parts, use a wax soldering tool to repair them.

4. Wax Tree Assembly: Solder the wax models onto a wax rod in a certain order to form a wax tree. Ensure that there are no contacts between the wax models and that they have sufficient spacing.

5. Investment Casting: Place the wax tree in a steel or ceramic flask and pour in a special casting plaster. Use a vacuum machine to remove air bubbles in the plaster to ensure a smooth surface and precise shape of the mold.

6. Shell Mold Baking: Put the flask with the investment mold in a kiln and heat it. The wax will melt and drain out of the mold, and the investment material will harden to form a precise mold cavity.

7. Metal Pouring: Heat the metal material to its melting point and pour the molten metal into the mold cavity. Common casting methods include vacuum suction casting, centrifugal casting, and vacuum pressure casting.

8. Dewaxing and Cleaning: After the metal solidifies, break or wash away the investment mold to remove the cast jewelry. Use tools such as sandblasters or ultrasonic cleaners to clean the surface of the jewelry to remove any remaining impurities.

9. Finishing and Polishing: Cut off the connection parts between the jewelry and the sprue, and then use polishing machines and other equipment to polish the jewelry to make its surface smooth and shiny.