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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 ...
Journal of Materials Processing Technology is a peer-reviewed scientific journal covering research on all aspects of processing techniques used in manufacturing components from various materials. It is published by Elsevier and the editor-in-chief is J. Cao ( Northwestern University ).
Oxo-degradable plastics: [2] these are petroleum-based plastics with additives such as transition metals and metals salts that promote the process of fragmentation of the plastic when exposed to a particular environment, such as high temperature or oxygen rich one, for a prolonged period of time. Fragmentation exposes a larger surface area of ...
The International Journal of Machine Tools and Manufacture is a peer-reviewed scientific journal dedicated to report the latest advancements in the fundamental understanding of mechanics of processes and machines applied to the manufacture of engineering parts made of metals, composites, ceramics and other structural/functional materials. [1] [2]
Draft angle design is an important factor when designing plastic parts. Because of shrinkage of plastic material, injection molded parts have a tendency to shrink onto a core. This creates higher contact pressure on the core surface and increases friction between the core and the part, thus making ejection of the part from the mold difficult.
The impact factor relates to a specific time period; it is possible to calculate it for any desired period. For example, the JCR also includes a five-year impact factor, which is calculated by dividing the number of citations to the journal in a given year by the number of articles published in that journal in the previous five years. [14] [15]
The blow molding process begins with softening plastic by heating a preform or parison. The parison is a tube-like piece of plastic with a hole in one end through which compressed air can enter. The plastic workpiece is then clamped into a mold and air is blown into it. The air pressure inflates the plastic which conforms to the mold.
The rotational molding process is a high-temperature, low-pressure plastic-forming process that uses heat and biaxial rotation (i.e., angular rotation on two axes) to produce hollow, one-piece parts. [9] Critics of the process point to its long cycle times—only one or two cycles an hour can typically occur, as opposed to other processes such ...