2024-11-11
• Srain: linear strain marks on the surface of the casting along the mold opening direction, with a certain depth, and in severe cases, the whole surface is strained; The metal liquid adheres to the surface of the mold, resulting in material shortage on the surface of the casting.
• Bubbles: Bubbles formed by the accumulation of gas under the skin of castings.
• Crack: blank is destroyed or broken, the formation of slender cracks, irregular linear, there are two kinds of penetration and non-penetration, under the action of external force has a development trend.
• Undercast: insufficient pouring, unclear outline and incomplete corners.
• Cold insulation: there are traces at the butt joint or lap joint of the liquid flow, and the edge of the junction is smooth, and there is a tendency to continue to develop under the action of external force.
• Dents: Dents that appear on a smooth surface.
• Flow marks: irregular, small and long lines on the surface of die-casting aluminum parts.
• Rough surface: the position direction and shape of the pouring in the die-casting model are improper, or the cooling of the violent parts of the molten metal is insufficient, and the rough surface of the die casting is obvious.
In addition, there may be deformation, spots, burr flash, shrinkage, porosity, inclusions, metal hard points, non-metal hard points, reticular hair wings and other issues.