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  2. Casting defect - Wikipedia

    en.wikipedia.org/wiki/Casting_defect

    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.

  3. Casting - Wikipedia

    en.wikipedia.org/wiki/Casting

    Cast iron casting. Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify. The solidified part is also known as a casting, which is ejected or broken out of the mold to complete the process.

  4. Metal casting - Wikipedia

    en.wikipedia.org/wiki/Metal_casting

    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.

  5. Metal stitching - Wikipedia

    en.wikipedia.org/wiki/Metal_stitching

    Metal stitching is an industrial technique for repairing cracked and broken cast iron, steel, bronze or aluminium structures and their components. The process is carried out cold, without welding . It allows the repair of cast iron and cast steel , often in-situ, without the distortion from welding , and can be used in other situations where ...

  6. Veining (metallurgy) - Wikipedia

    en.wikipedia.org/wiki/Veining_(metallurgy)

    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

  7. Permanent mold casting - Wikipedia

    en.wikipedia.org/wiki/Permanent_mold_casting

    Schematic of the low-pressure permanent mold casting process. Low-pressure permanent mold (LPPM) casting uses a gas at low pressure, usually between 3 and 15 psi (20 to 100 kPa) to push the molten metal into the mold cavity. The pressure is applied to the top of the pool of liquid, which forces the molten metal up a refractory pouring tube and ...

  8. Cast iron - Wikipedia

    en.wikipedia.org/wiki/Cast_iron

    Cast iron was invented in China in the 5th century BC and poured into molds to make ploughshares and pots as well as weapons and pagodas. [12] Although steel was more desirable, cast iron was cheaper and thus was more commonly used for implements in ancient China, while wrought iron or steel was used for weapons. [ 2 ]

  9. Foundry - Wikipedia

    en.wikipedia.org/wiki/Foundry

    Sand casting – Green or resin bonded sand mold. Lost-foam casting – Polystyrene pattern with a mixture of ceramic and sand mold. Investment casting – Wax or similar sacrificial pattern with a ceramic mold. Ceramic mold casting – Plaster mold. V-process casting – Vacuum with thermoformed plastic to form sand molds. No moisture, clay or ...