Modern permanent mold gravity casting in commercial environment uses reusable molds that are CNC machined for higher casting precision. This means gravity castings can have more detailed and complex designs, are usually more precise in their dimensional attributes and have very good as-cast surface finish. Gravity casting is also a highly repeatable process and can be easily automated, so it is well-suited for high volume production runs.
Permanent mold gravity casting may seem like a straightforward process, but a high level of skill is required to maintain casting quality. We follow a series of strict procedures to ensure our products can always meet your expectations.
To ensure smooth metal flow and minimal casting defects, we must first pre-heat the casting mold to between 150°C (300°F) and 260°C (500°F). We then apply a ceramic coating to the mold cavities to extend the mold’s working life and make it easier to remove the casting parts.
It is worth noting that unskilled pouring may leave visible flow marks on the finished parts. That is why we have our own casting specialists supervising the entire process, ensuring the molten metal is poured into the mold at the right speed. After the casting is done, all sprues and runners are accurately trimmed, then cleaned and painted (if required) by an experienced crew of workers.
Our gravity casting process can produce porosity-free parts ranging from 50 grams to 70 kilograms with good dimensional repeatability and a smooth finish. All material specifications, dimensions and tolerances closely monitored and maintained by our QC specialists.
Contact our Customer Service and let us know how we can help to catapult your next project to success.
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