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  2. Shell molding - Wikipedia

    en.wikipedia.org/wiki/Shell_molding

    The shell mold is then placed into a flask and supported by a backing material. Pouring - The mold is securely clamped together while the molten metal is poured from a ladle into the gating system and fills the mold cavity. Cooling - After the mold has been filled, the molten metal is allowed to cool and solidify into the shape of the final ...

  3. Sprue (manufacturing) - Wikipedia

    en.wikipedia.org/wiki/Sprue_(manufacturing)

    The gate is the location at which the molten plastic enters the mold cavity and is often evidenced by a small nub or projection (the "gate mark") on the molded piece. Many scale-model kits are made from injection-molded plastic. Hobbyists typically remove the parts of a model kit from the runner using a sharp craft knife or razor saw. The ...

  4. Hot runner - Wikipedia

    en.wikipedia.org/wiki/Hot_runner

    (The cavities are the part of the mold shaped like the parts to be produced.) By contrast, a cold runner is simply a channel formed between the two halves of the mold, for the purpose of carrying plastic from the injection molding machine nozzle to the cavities. Each time the mold opens to eject the newly formed plastic parts, the material in ...

  5. Injection moulding - Wikipedia

    en.wikipedia.org/wiki/Injection_moulding

    Injection moulding (U.S. spelling: injection molding) is a manufacturing process for producing parts by injecting molten material into a mould, or mold. Injection moulding can be performed with a host of materials mainly including metals (for which the process is called die-casting ), glasses , elastomers , confections , and most commonly ...

  6. Full-mold casting - Wikipedia

    en.wikipedia.org/wiki/Full-mold_casting

    Finally, the molten metal (1) is poured into the mold, which vaporizes the foam (3) allowing the metal to fill the entire mold. The vapor is simultaneously extracted from the flask through the sand. The casting is allowed to cool and then dumped out of the flask (5) ready to use. The sand does not need to be reprocessed so it can be directly ...

  7. A Big Panic Over Tiny Plastics - AOL

    www.aol.com/news/big-panic-over-tiny-plastics...

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  8. Molding (process) - Wikipedia

    en.wikipedia.org/wiki/Molding_(process)

    A mold or mould is a hollowed-out block that is filled with a liquid or pliable material such as plastic, glass, metal, or ceramic raw material. [2] The liquid hardens or sets inside the mold, adopting its shape. A mold is a counterpart to a cast. The very common bi-valve molding process uses two molds, one for each half of the object.

  9. Spin casting - Wikipedia

    en.wikipedia.org/wiki/Spin_casting

    The metal must be molten prior to introduction into the mold. It is necessary for a spin casting furnace to have a temperature controller, as there is an optimal range for each metal. For example, a particular zinc alloy is typically cast between 413 and 427 °C (775 and 801 °F), whereas it actually melts much lower around 260 °C (500 °F).