Patent ID: 8469079
Filing Date: 2013-06-25
Classification: B22D

Abstract:
1. A method for removing die cast metal waste from an interior of a die cast machine riser tube comprising: providing a riser tube comprised of an elongated cylindrical section having an inside surface and an outside surface, and a top portion connected to a top of the elongated cylindrical section whereby the top portion has an outer diameter larger than the outer diameter of the elongated cylindrical section; removing the riser tube from a die cast machine; inserting the riser tube into a riser tube stand which is separate from the die cast machine such that the top portion of the riser tube rests on a top circular portion of the riser tube stand; securing a heating means to the top portion of the riser tube; heating the interior of the riser tube to a temperature suitable to melt the die cast metal waste on an inside surface of the elongated cylindrical section of the riser tube; cooling the riser tube; scraping away left over residue from the inside surface of the elongated cylindrical section of the riser tube; performing a leak test on the riser tube with leak test materials; applying a release agent to the inside surface of the elongated cylindrical section of the riser tube, wherein prior to applying a release agent to the inside surface of the elongated cylindrical section of the riser tube, the method further includes baking the riser tube after performing the leak test at a temperature suitable to neutralize the leak test materials for a predetermined period of time; and re-installing the riser tube on to the die cast machine.