Low Pressure Die Casting Manufacturer

Are low-pressure die-casting castings of high purity?
The purity of castings produced by low-pressure die-casting is relatively high. This is mainly due to the filling method and working principle of low-pressure die casting.
In the low-pressure die casting process, the molten metal is steadily filled into the mold from bottom to top through a rising tube under the action of gas pressure. Due to the fact that slag generally floats on the surface of molten metal, low-pressure casting is filled with molten metal from the lower part of the crucible through a riser, which effectively avoids the possibility of slag entering the mold cavity and improves the purity of the casting.
In addition, the filling of the metal liquid during low-pressure die casting is smooth, reducing the phenomenon of rolling, impact, and splashing of the metal liquid during filling, which also reduces the formation of oxide slag and further improves the purity of the casting.

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Do low-pressure die-casting castings have high mechanical properties?
The mechanical properties of low-pressure die-casting castings are usually higher. This is mainly due to several key factors in the low-pressure casting process:
Solidification under pressure: Castings undergo crystallization and solidification under pressure, which can result in sufficient shrinkage. The solidification process under this pressure makes the structure of the casting denser, reduces defects such as porosity and shrinkage, and thus improves the mechanical properties of the casting. For example, after appropriate heat treatment, the mechanical performance indicators such as tensile strength, elongation, and hardness of low-pressure castings can reach a high level.
Smooth filling process: Low pressure casting adopts a bottom-up filling method, in which liquid metal smoothly fills the mold cavity under pressure, reducing the flushing of liquid metal on the mold cavity wall and the involvement of gas, which helps to obtain castings with smooth surfaces and clear contours. At the same time, a smooth filling process also reduces inclusions and defects inside the casting, further improving the mechanical properties of the casting.
Flexible process parameter control: The process parameters of low-pressure casting, such as pouring temperature, pouring speed, and holding time, can be manually controlled, making the casting process more precise and controllable. By optimizing these process parameters, the mechanical properties and surface quality of castings can be further improved.
Wide applicability: Low pressure casting is suitable for a variety of materials, including non-ferrous alloys such as aluminum alloys and magnesium alloys, as well as some black metals. These materials can fully utilize their performance advantages in the low-pressure casting process to obtain high-quality castings.
It should be noted that although low-pressure casting has significant advantages in improving the mechanical properties of castings, the specific level of mechanical properties of castings is still influenced by various factors, such as material properties, design structure, process parameters, equipment conditions, and operational skills. Therefore, in actual production, it is necessary to comprehensively consider these factors and take corresponding measures to ensure the stability and reliability of the mechanical properties of castings.