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  2. Sprue (manufacturing) - Wikipedia

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

    A sprue is a large diameter vertical channel through which liquid material is introduced into a mold. It connects the pouring basin to the runner. In many cases it controls the flow of material into the mold. During casting or molding, the material in the sprue will solidify and need to be removed from the finished part. It is usually tapered ...

  3. Injection mold construction - Wikipedia

    en.wikipedia.org/wiki/Injection_mold_construction

    The material enters the mold through the sprue bush. Top plate—It is used to clamp the top half of the mold to the moving half of the molding machine and is usually made of mild steel. Cavity plate—The plate used to create a cavity (via a gap) that will be filled with the plastic material and form the plastic component. Usually made of mild ...

  4. Riser (casting) - Wikipedia

    en.wikipedia.org/wiki/Riser_(casting)

    A bronze casting showing the sprue and risers. A riser, also known as a feeder, [1] is a reservoir built into a metal casting mold to prevent cavities due to shrinkage.Most metals are less dense as a liquid than as a solid so castings shrink upon cooling, which can leave a void at the last point to solidify.

  5. Metal casting - Wikipedia

    en.wikipedia.org/wiki/Metal_casting

    A large sprue well is used to dissipate the kinetic energy of the liquid material as it falls down the sprue, decreasing turbulence. The choke , which is the smallest cross-sectional area in the gating system used to control flow, can be placed near the sprue well to slow down and smooth out the flow.

  6. Injection moulding - Wikipedia

    en.wikipedia.org/wiki/Injection_moulding

    Filter for nozzle with a plastic toy next to it. Injection moulding is used to create many things such as wire spools, packaging, bottle caps, automotive parts and components, toys, pocket combs, some musical instruments (and parts of them), one-piece chairs and small tables, storage containers, mechanical parts (including gears), and most other plastic products available today.

  7. Investment casting - Wikipedia

    en.wikipedia.org/wiki/Investment_casting

    The technique can use substantially less material than gravity pouring because the sprue and some gating need not solidify. [18] [19] This technique is more metal efficient than traditional pouring because less material solidifies in the gating system. Gravity pouring only has a 15 to 50% metal yield compared to 60 to 95% for counter-gravity ...

  8. Micro injection molding - Wikipedia

    en.wikipedia.org/wiki/Micro_injection_molding

    The total volume of the feed system (sprue, runners and gates) can exceed the volume of the parts by a factor of 100 or more. [ citation needed ] Materials and applications for micro injection molding

  9. Casting - Wikipedia

    en.wikipedia.org/wiki/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.