Porosity in High Pressure Die Casting
Porosity in high-pressure die casting (HPDC) refers to the presence of air or gas pockets within the casting material, which can affect the structural integrity and quality of the final product. Here are some key points about porosity in HPDC:
Causes of Porosity:
Impact on Properties:
Squeeze Pin for Porosity Remedy
In high-pressure die casting (HPDC), a squeeze pin is a crucial component used to control the porosity and improve the quality of the castings. Here’s a detailed explanation of what a squeeze pin is and its role in the HPDC process:
A squeeze pin is a mechanical device integrated into the die casting tooling, specifically designed to minimize porosity by exerting additional pressure on the molten metal during solidification. It consists of a pin or a rod that can be pneumatically or hydraulically actuated to apply pressure to the casting as it solidifies.
Reducing Porosity:
Improving Mechanical Properties:
Enhancing Surface Finish:
Process Control:
Squeeze Pin in Inspire Cast
Use the component tab in Inspire Cast to create squeeze pin on the location where Porosity exists. But before that measure the size of shrinkage to identify the parameter for creating Squeeze pin as given in below images.
Correct value value for Squeeze pin generation can be analyzed from shrinkage volume and the time for actuation. Check the time taken during solidification to understand when the hot spot will be created as shown in below images.
Once the simulation with squeeze pin actuation is finished, we can check the improved porosity behavior.
In summary, a squeeze pin plays a significant role in enhancing the quality and reliability of high-pressure die castings by reducing porosity and improving mechanical properties. It is a vital tool in the die casting industry for producing high-quality, defect-free components that meet stringent performance and aesthetic requirements.