The bronze melts and infiltrates the part through capillary action. Include any water lines, ejector pin holes, and draft. The acrylic binder is infiltrated with chemical emulsion, which initiates polymer cross linking. The infiltrated part is nitrogen dried. This step minimizes slump and cracking in large parts, eliminates creep, and provides more uniform shrinkage during the furnace cycle.
Any excess bronze is removed and the insert is sandblasted.
Then any external machining of inserts can be completed. This must carry through at all stages of manufacturing with processes and procedures that facilitate a process of continuous improvement. This workshop will focus on injection molding, utilizing examples from that process. It will also be of value to those working in other plastic processes and desiring training in constructing designed experiments for plastics. This unique extrusion event combines the content expertise of well-known extrusion consultant Dr. Chris Rauwendaal with the training expertise and modern facilities of the Pennsylvania College of Technology's Plastics and Polymer Technology Department.