For injection molders, cooling is often the longest part of the production cycle and one of the biggest factors affecting part quality. Traditional cooling channels are limited by straight-line drilling, making it difficult to cool complex mold geometries evenly. The result can be longer cycle times, warpage, scrap, and inconsistent part quality.
Conformal cooling offers a better solution. Enabled by metal 3D printing, conformal cooling channels are designed to follow the contours of the mold cavity, maintaining a consistent distance from the part surface. This allows for more efficient heat transfer, faster cooling, and more uniform mold temperatures throughout the tool.
Cut-away metal 3D printed insert shows conformal channels, photo credit: B&J Specialty
The benefits can be substantial. Manufacturers using conformal cooling have reported cycle time reductions of up to 70%, helping increase throughput and production capacity without additional equipment. More consistent cooling also improves dimensional accuracy, reduces warpage, lowers scrap rates, and can improve surface finish quality.
Beyond production gains, conformal cooling can help reduce overall manufacturing costs. Reported results include up to 75% shorter design times, 16% lower mold production costs, and up to 50% fewer production work hours. Improved thermal management can also reduce mold temperature variation by as much as 86%, delivering greater process stability and repeatability.
The 3D design of the conformal cooling channels. Photo credit, B&J Specialty
These advanced cooling networks would be difficult or impossible to create with conventional machining. Metal 3D printing removes those design limitations, allowing engineers to optimize cooling channel placement for maximum performance rather than manufacturability.
For manufacturers producing high volumes, molding complex geometries, or struggling with part quality issues, conformal cooling provides a proven way to improve productivity, reduce costs, and deliver better parts. By leveraging metal additive manufacturing, moldmakers can unlock new levels of efficiency and profitability across their injection molding operations.
Learn more about how 3D printed injection mold inserts can improve your injection molding processes
