The core working principle of a vacuum casting machine is to complete the induction heating melting and degassing refining of precious metals in a sealed environment protected by a vacuum or inert gas. Then, utilizing the combined effects of vacuum negative pressure and gravity, the molten metal is smoothly filled into a mold and cooled to form the final product. This fundamentally solves problems such as high-temperature oxidation of precious metals, porosity in castings, and incomplete filling of details.
The equipment relies on medium-frequency/high-frequency induction heating for efficient melting, combined with a vacuum system to create an oxygen-free negative pressure environment. During the casting stage, the mold cavity's negative pressure adsorption and the gravity of the molten metal achieve filling, isolating air throughout the process. The final result is a high-density, oxidation-free precious metal casting with complete details. The entire process can be divided into five key steps, each supported by corresponding physical and technological principles.
