Molding & Core Making

For metal casting process engineers, filtration directly impacts casting quality, scrap rates, and profitability. Non-metallic inclusions remain a leading cause of defects, compromising surface finish, mechanical properties, pressure tightness, and machinability. Modern filtration technology provides proven pathways to eliminate these costly quality issues. Filter Media Options Four distinct filter types serve today’s metal casting operations.…

Producing sound castings depends on one core principle: controlled, directional solidification. As molten metal cools, it shrinks. If that shrinkage is not properly fed with additional liquid metal, internal voids and porosity can form. The riser serves as a reservoir of molten metal to compensate for this contraction. Riser sleeves enhance this function, improving feeding…

Silica Sand Silica sand has long been the backbone of the foundry industry, serving as the primary material for producing molds and cores. Its unique properties make it a reliable and cost-effective choice for creating high-quality castings across a wide range of metals and industries. Why Silica Sand? Silica sand, composed primarily of quartz (SiO₂),…

STANDARD & CALCINED ZIRCON SAND Choosing the right sand is critical if you want to produce cleaner, more precise castings. At Carpenter Brothers, Inc., we supply both standard zircon sand and calcined zircon sand — each designed to help foundries cast high-value parts with fewer defects and better surface quality. Below, we break down how…