First, the casting process. Casting involves pouring molten metal or alloy into a mold, where it cools and solidifies to form the desired shape. The casting process includes mold design, metal melting, slurry pouring, and cooling, ensuring the final product meets quality requirements.
Second, the fluidity of the molten metal. During casting, the metal or alloy exists in a molten state, and its fluidity plays a crucial role in the final casting. By rationally designing the mold structure and controlling the temperature and pressure of the metal, the fluidity of the molten metal can be influenced, resulting in the ideal casting shape.
Finally, physicochemical changes. During the cooling and solidification of the metal, physicochemical changes occur. The metal gradually transforms from a liquid to a solid state, and the changes in grain structure during this process affect the mechanical properties and microstructure of the casting.
In summary, the working principle of castings involves multiple aspects, including casting processes, molten metal fluidity, and physicochemical changes. By rationally controlling these key elements, high-quality castings with complex shapes can be produced to meet the needs of various industrial sectors.