Die cast parts are widely used in fields such as automotive, aerospace, electronics, etc. due to their high efficiency, high precision, and good surface quality. Among them, the pressure resistance performance is an important indicator for measuring the quality of die-casting parts, which directly affects their service life and safety

1、 Key factors affecting the pressure resistance performance of die-casting parts

        Material selection:

        Alloy composition: Die castings with different alloy compositions have significant differences in strength, hardness, corrosion resistance, and other properties. For example, increasing the silicon content in aluminum alloys can improve strength and hardness, but it can reduce toughness.

        Material purity: Impurities and inclusions can reduce the density and continuity of the material, form stress concentration points, and lower its pressure resistance.

Die casting process:

        Die casting parameters: Injection pressure, injection speed, mold temperature, and other parameters affect the filling, solidification process, and internal structure of the molten metal, thereby affecting the pressure resistance performance.

        Mold design: A reasonable pouring system, exhaust system, and cooling system can reduce defects such as porosity and shrinkage, and improve density.

Post processing technology:

        Heat treatment: Through processes such as solution treatment and aging treatment, the microstructure and mechanical properties of materials can be improved, and their pressure resistance can be enhanced.

        Surface treatment: Surface treatments such as anodizing and electroplating can improve surface hardness, wear resistance, and corrosion resistance, indirectly enhancing pressure resistance.

2、 Strategies for improving the pressure resistance of die-casting parts

        Optimize material selection: Select appropriate alloy components based on usage environment and performance requirements, and strictly control material purity.

Improve die-casting process: optimize die-casting parameters, improve mold design, reduce casting defects, and enhance density.

        Strengthen post-processing: Adopt appropriate heat treatment and surface treatment processes to further improve the mechanical properties and surface quality of the material.

Strict quality inspection: X-ray testing, ultrasonic testing and other methods are used to conduct non-destructive testing on die-casting parts to ensure that their internal quality meets the requirements.

3、 Future Development Trends

        Research and development of new die-casting materials: Develop new die-casting alloys with high strength, high toughness, and high temperature resistance to meet more demanding usage environments.

        Application of advanced die-casting technology: Advanced technologies such as vacuum die-casting and squeeze casting are adopted to further improve the density and mechanical properties of die-casting parts.

        Intelligent Quality Inspection: Utilizing artificial intelligence and big data technology to achieve online monitoring and intelligent diagnosis of die-casting quality.

        In summary, the pressure resistance of die cast parts is influenced by various factors and requires comprehensive control from aspects such as materials, processes, and post-treatment. With the continuous development of new materials, processes, and technologies, the pressure resistance of die-casting parts will be further improved, and their application fields will become more extensive.