The casting ring is not baked through, resulting in the casting ring temperature is too low, and the metal is not flowing smoothly into the casting ring after melting. When casting cobalt-chromium alloy, the casting ring is r

If the melting temperature is too high during casting, the casting will be loose and the metal will not be dense, which may easily cause the casting to break or bubbles to appear in the porcelain.The correct way to melt denta