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23 December, 15:20

Which of the following processes start with a material that is in a fluid or semifluid state and solidifies the material in a cavity (two best answers) : a. pressing b. forging c. casting d. machining e. turning f. molding

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  1. 23 December, 15:26
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    a) Casting and d) molding

    For the first case, casting can be defined as the process of manufacturing parts, commonly metallic but also plastic, consisting of melting a material and introducing it into a cavity (emptying, molding), called a mold, where it solidifies.

    In the second case, molding is the manufacturing process by molding liquid or flexible raw material using a matrix. This mold is nothing more than a hollow model that is filled with liquid material such as plastic, glass, metal or any ceramic raw material that will subsequently harden.
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