Unlike subtractive methods such as cutting or drilling, EOS’ direct metal laser sintering (DMLS) system is an additive process that enables users to seamlessly “build in” cooling channels while creating a part layer by layer.
In addition, those cooling channels do not need to be straight like those made by secondary drilling. Instead, they can be serpentine or take whatever path reaches the “hot spots” of the mold, bringing coolant efficiently to where it is most needed. These conformal cooling channels can increase product quality while reducing manufacturing times, the company says.
A range of metals is available in DMLS, including the company’s MaragingSteel MS1, a pre-alloyed ultra-high-strength steel that is suitable for heavy-duty injection molds and inserts for molding virtually all standard thermoplastics.