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A casting defect is an undesired irregularity in a metal casting process. Some defects can be tolerated while others can be repaired, otherwise they must be eliminated. They are broken down into five main categories: gas porosity, shrinkage defects, mould material defects, pouring metal defects, and metallurgical defects.
In metallurgy a veining (or finning) is the occurrence of a sheet like casting defect, produced by molten metal penetration into a sand casting mould. Veining a defect on the surface of a casting appearing as fins, veins or wrinkles and associated with excessive thermal movement of the sand, especially core sand
Molten metal before casting Casting iron in a sand mold. In metalworking and jewelry making, casting is a process in which a liquid metal is delivered into a mold (usually by a crucible) that contains a negative impression (i.e., a three-dimensional negative image) of the intended shape.
Casting defect; Centrifugal casting (industrial) Centrifugal casting (silversmithing) Ceramic mold casting; Chill (casting) Chvorinov's rule; Edward Cockey; Conestoga Foundrymen's Association; Continuous casting; Controlled permeability formwork; Cope and drag; Core (manufacturing)
An entrainment defect is a term used in metallurgy to describe a defect created in a casting by the folding-over of the oxidized surface layer of the molten metal into the bulk liquid. Outside of special cases, the surface of a molten metal is covered with a thin, solid layer of oxide.
Inclusions can create problems in the casting when they are large and in too high concentration. Here are examples of problems related to inclusions: Pinholes in light gauge foil; Flange cracks in beverage containers; Surface streaks in bright automotive trim and lithographic material
Shrinkage defect or shrinkage void, a casting defect caused by metal solidifying from the outside inward; Shrinkage (statistics), a technique to improve an estimator;
Flow mark causes vary for specific parts and production lines due to the variability in molds, machines, and materials. For the most part they are due to varying cooling speeds of the material as it flows through the mold. [2]