Casting Casting Babbitt metal, also called white metal, is an alloy used to provide the bearing surface in a plain bearing. It was invented in 1839 by Isaac Babbitt in Taunton, Massachusetts, USA. The term is used today to describe a series of alloys used as a bearing metal. Babbit metal is characterized by its resistance to gall. ...more on Wikipedia about "Babbitt metal"
Bronze is the most popular metal for cast metal sculptures; a cast-metal sculpture of bronze is often called a bronze. Common bronze alloys often have the unusual and very desirable property of expanding slightly just before they set, thus filling the finest details of a mold. ...more on Wikipedia about "Bronze sculpture"
Casting is a process by which a material is introduced into a mold while it is liquid, allowed to solidify in the shape inside the mold, and then removed producing a fabricated object, part, or casing. Casting is often used for creating one or more copies of an original piece of sculptural (three-dimensional) artwork. It is also used extensively in the automobile manufacture industry, such as the casting of engine blocks or cylinder heads, or vacuum-forming of plastics and in the lost core process. The process, particularly when performed with molten metals, is also called founding. ...more on Wikipedia about "Casting"
A Casting Flask is a wooden or metal frame, used in a foundry to contain molding sand used to make a mold. A simple flask has two parts, the cope and the drag, and more elaborate flasks may have three or even four parts. ...more on Wikipedia about "Casting flask"
Centrifugal casting or rotocasting is a casting technique which has application across a wide range of industrial and artistic applications: ...more on Wikipedia about "Centrifugal casting"
In foundry work, the terms Cope and Drag refer to the upper and lower parts of a two-part casting flask, used in sand casting. The flask is a wood or metal frame, which contains the molding sand, providing support to the sand as the metal is poured into the mold. ...more on Wikipedia about "Cope and drag"
Dross is a mass of solid impurities floating on a molten metal bath. It appears usually on the melting of low melting point metals or alloys such as tin, lead, zinc or aluminium, or by oxidation of the metal(s). They can also consist of impurities such as paint leftovers. It can easily be skimmed off the surface before pouring the metal into a mold or casting flask. ...more on Wikipedia about "Dross"
Green Sand is an aggregate of sand, bentonite clay, and water. Its principle use is in making molds for the casting of metals. The largest portion of the aggregate is always sand. There are many recipes for the proportion of clay, but they all strike different balances between moldability, surface finish, and ability of the hot molten metal to degas. ...more on Wikipedia about "Green sand"
Lost foam casting (LFC) is a type of investment casting process that uses foam patterns as the investment. The method takes advantage of the properties of foam to simply and cheaply form castings that would be difficult or impossible, using normal " cope and drag" techniques. ...more on Wikipedia about "Lost-foam casting"
Molding Sand, or Foundry sand, is sand that when moistened or oiled tends to pack well and hold its shape. It is used in the process of sand casting. ...more on Wikipedia about "Molding sand"
A riser or feeder is a reservoir built into a metal-casting mold to prevent cavities due to shrinkage. Because metals are less dense as liquids than as solids, castings shrink as they cool. This can leave a void, generally at the last point to solidify. Risers prevent this by providing molten metal at the point of likely shrinkage, so that the cavity forms in the riser, not the casting. ...more on Wikipedia about "Riser (casting)"
Sand casting is a means of producing rough metal castings that are further refined by any or all of hammer peening, shot peening, polishing, forging, plating, rough grinding, machine grinding or machining. Sand castings not further worked by polishing or peening are readily recognized by the sand-like texture imparted by the mold. As the accuracy of the casting is limited by imperfections in the mold making process there will be extra material to be removed by grinding or machining, more than is required by other more accurate casting processes. ...more on Wikipedia about "Sand casting"
In foundry work, a Sprue is the passage through which metal is poured into a mold. The term can also refer to the excess metal on a rough casting, which solidified in the sprue hole. The term has the identical usage in the plastic injection-molding industry. ...more on Wikipedia about "Sprue (casting)"
Vacuum casting is a means of casting small metal parts or jewelry that have fine detail or for casting various plastic materials. A porous or vented mold is used and is placed on a table or container where vacuum is applied. The liquid to be cast will be driven into the mold by atmospheric pressure, while the vacuum will also remove trapped air that would otherwise impede the free flow of the liquid casting material. Vacuum casting is applied as an alternative to centrifugal casting of metals which is used in similar situations. ...more on Wikipedia about "Vacuum casting"
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