Low-pressure casting has a series of significant advantages, mainly reflected in the following aspects:
High-quality castings: During the low-pressure casting process, the molten metal fills the mold under pressure, flows smoothly and without splashing, which can effectively avoid gas involvement and erosion of the mold wall and core, thus improving the pass rate of castings. At the same time, the casting crystallizes under pressure, with dense structure, clear outline, smooth surface and high mechanical properties, especially suitable for the casting of large and thin-walled parts.
Wide scope of application: Low-pressure casting is not only suitable for casting non-ferrous alloys, such as aluminum castings, but also for cast iron and cast steel, showing its wide range of applications.
Process flexibility: The pressure and speed in the low-pressure casting process can be artificially controlled, making this process suitable for a variety of castings. In addition, by changing the pressurization speed, the molten soup can be filled by laminar flow, increasing the flexibility of the process.
Environmental protection and automation: Low-pressure casting is pollution-free and has simple equipment, making it easy to implement mechanization and automation, which helps improve production efficiency and reduce labor costs.
However, although low-pressure casting has many advantages, it also has some shortcomings, such as relatively low production efficiency, long casting cycle, and the need for comprehensive and strict management to ensure casting quality. Therefore, when choosing whether to use low-pressure casting, factors such as product demand, production scale, economic benefits, and technical feasibility need to be comprehensively considered.