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  2. Materials for use in vacuum - Wikipedia

    en.wikipedia.org/wiki/Materials_for_use_in_vacuum

    Materials for use in vacuum are materials that show very low rates of outgassing in vacuum and, where applicable, are tolerant to bake-out temperatures. The requirements grow increasingly stringent with the desired degree of vacuum to be achieved in the vacuum chamber. The materials can produce gas by several mechanisms.

  3. Vacuum forming - Wikipedia

    en.wikipedia.org/wiki/Vacuum_forming

    A simple visualization of the forming process Vacuum forming machine to produce inner liner/food liner of refrigerator. Vacuum forming is a simplified version of thermoforming, where a sheet of plastic in various forms of High Impact Polystyrene Sheet (HIPS) for low impact products, or ABS for bathroom shower trays, and HDPE for exterior vehicle parts, plus various other types of vacuum ...

  4. Non-evaporable getter - Wikipedia

    en.wikipedia.org/wiki/Non-Evaporable_Getter

    This is done through the use of materials that readily form stable compounds with active gases. They are important tools for improving the performance of many vacuum systems. Sintered onto the inner surface of high vacuum vessels, the NEG coating can be applied even to spaces that are narrow and hard to pump out, which makes it very popular in ...

  5. Superplastic forming - Wikipedia

    en.wikipedia.org/wiki/Superplastic_forming

    For titanium alloys e.g. Ti 6Al 4V and some stainless steels this is around 900 °C (1,650 °F) and for aluminium alloys e.g. AA5083 it is between 450 and 520 °C. In this state the material becomes soft so processes that are usually used on plastics can be applied, such as: thermoforming, blow forming, and vacuum forming. [1]

  6. Plastic extrusion - Wikipedia

    en.wikipedia.org/wiki/Plastic_extrusion

    When vacuum is used, this is often described as vacuum forming. Orientation (i.e. ability/ available density of the sheet to be drawn to the mold which can vary in depths from 1 to 36 inches typically) is highly important and greatly affects forming cycle times for most plastics.

  7. Thermoforming - Wikipedia

    en.wikipedia.org/wiki/Thermoforming

    Many heavy-gauge forming applications use vacuum only in the form process, although some use two halves of mating form tooling and include air pressure to help form. Aircraft windscreens and machine gun turret windows spurred the advance of heavy-gauge forming technology during World War II. Heavy-gauge parts are used as cosmetic surfaces on ...