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The qualified molten metal after smelting is directly injected into a high - strength pressure chamber or mold cavity. Then, a continuous mechanical static pressure is applied. Under the action of this pressure, the molten metal fills the mold cavity, crystallizes, solidifies, and undergoes high - pressure feeding. Eventually, parts with a dense internal structure, smooth appearance, and precise dimensions are obtained.
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It usually consists of a mold - clamping mechanism, an injection mechanism, an ejection mechanism, etc. The mold - clamping mechanism is used to open and close the mold, ensuring the sealing and stability of the mold during operation. The injection mechanism injects the molten metal into the mold cavity and applies pressure during the solidification process of the molten metal. The ejection mechanism ejects the formed part from the mold after the part is completed.
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According to structural characteristics, it can be divided into horizontal liquid forging machines and vertical liquid forging machines. The horizontal liquid forging machine has a structure of downward injection, vertical extrusion, and horizontal clamping, which makes it more convenient to inject the molten metal, apply pressure, and open and close the mold during operation. The vertical liquid forging machine usually has high rigidity and stability and is suitable for producing parts with high precision requirements. According to the process method, it can be divided into direct squeeze casting machines and indirect squeeze casting machines. In a direct squeeze
Casting Machine, pressure is directly applied to the entire surface of the molten metal. In an indirect squeeze casting machine, pressure is indirectly applied to the molten metal through the runner.
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It is widely used in fields such as aerospace, aviation, military, and automotive. It can produce parts made of various materials such as aluminum alloys, magnesium alloys, and steel, like automobile wheels, brakes, shock absorbers, engine blocks, and aerospace structural components.
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The parts produced have high mechanical properties, a dense structure, and are free of defects such as shrinkage cavities and porosity. They have good formability, allowing for the production of parts with complex shapes. The product yield is high, and the material utilization rate is high. Near - net - shape forming can be achieved, reducing production costs.
