1. Overview of Low-pressure Die-Casting Process
Low-pressure die-casting is an advanced metal forming process that uses gas pressure to inject molten metal into the mold cavity and maintain it under a certain pressure for a period of time to solidify the metal under pressure. This process has the advantages of stable filling, controllable pouring speed, and high casting quality. It is particularly suitable for manufacturing castings with complex shapes and high precision requirements.
2. Characteristics of Low-pressure Die-Casting Process
Stable filling: During the low-pressure die-casting process, the molten metal is injected into the mold cavity at a lower pressure, avoiding the violent impact and splashing of the molten metal during the filling process, thereby reducing the generation of defects such as pores and inclusions.
Controllable pouring speed: The low-pressure die-casting process can accurately control the pouring speed of the molten metal to ensure that the molten metal can smoothly fill the mold cavity, avoiding casting defects caused by pouring too fast or too slow.
High casting quality: Since the low-pressure die-casting process solidifies under pressure, the structure of the casting is denser and the mechanical properties are higher. At the same time, this process can also reduce defects such as shrinkage cavities and shrinkage inside the casting, and improve the reliability and durability of the casting.
3. Application of low-pressure die-casting process in the manufacture of this Gearbox Left Housing Low Pressure Aluminum Die-Casting
Material selection: This gearbox left housing uses A356 aluminum alloy as raw material. A356 aluminum alloy has good casting and mechanical properties, which can meet the strength and corrosion resistance requirements of the gearbox left housing.
Mold design: According to the shape and size requirements of the gearbox left housing, the corresponding mold is designed. The mold has a reasonable structure and high precision, which can ensure that the casting maintains a stable shape and size during the molding process.
Process parameter setting: In the low-pressure die-casting process, reasonable process parameters need to be set, such as pouring temperature, gas pressure, holding time, etc. The setting of these parameters needs to be comprehensively considered according to factors such as the material, shape and size of the casting to ensure the quality of the casting.
Production process: In the low-pressure die-casting process, the molten A356 aluminum alloy is injected into the mold cavity, and then maintained under a certain pressure for a period of time to allow the metal to solidify under pressure. Finally, the casting is cleaned, inspected and tested to ensure that its quality meets the design requirements.
4. Advantages of low-pressure die-casting process
Improve the quality of castings: The low-pressure die-casting process can significantly reduce defects such as pores and inclusions inside the castings, and improve the density and mechanical properties of the castings.
Reduce production costs: Due to the high production efficiency and good material utilization rate of the low-pressure die-casting process, it can reduce production costs and improve the economic benefits of the enterprise.
Enhance product competitiveness: The left housing of the gearbox manufactured by the low-pressure die-casting process has high quality and performance, which can meet the strict requirements of new energy vehicle accessories and enhance the market competitiveness of the product.