18K Rose Gold Casting Shrinkage Porosity: Shift-Level Diagnostic Workflow for Thick-Thin Junction Defects

Executive Summary

If shrinkage porosity remains at thick-thin junctions in 18K rose gold rings, the issue is usually feed-path and thermal-sequence mismatch, not just machine type. This guide gives a practical diagnostic workflow: verify metal input and superheat window, redesign feed geometry, align burnout and flask temperature, then lock vacuum/pressure timing with objective checkpoints.