The main quality of ingot casting defect analysis
5. 2 analysis of 5 main quality of ingot casting defects. 2. 1 there are many different kinds of aluminum ingot casting defects and defect classification Shanghai generally can be identified as follows ( 1) Chemical composition, such as excessive levels of main ingredients and impurities. ( 2) Surface quality is unqualified, such as cold shut, Shanghai aluminum layers, cracking, segregation tumor. ( 3) Melt quality is not qualified to produce defects, such as slag, oxide film, porosity, loose, white, white spot.