Compression molding is the process by which a composite compound is molded into the desired shape by placing it in a heated cavity, closing the platens, and applying heat and pressure for the required cure cycle.
Tools used to mold parts are usually fabricated from aluminum or steel depending on design and production requirements. Developments into new molding compounds by raw material suppliers, including those using Kevlar and graphite as well as fiberglass, has widened the spectrum of potential applications. Even parts already made from composites using other processes may be more suited to compression molding. If so, the switch could provide cost savings and improved product quality.
Compression molding lends itself best to applications which require some of the following characteristics:
Chemical and corrosion resistance
High strength to weight ratio
Medium to high quantities
Ability to dampen noise
Ability to accommodate temperature extremes
Typically, compression molding has been used to form housing, covers, guards, and similar parts for a variety of industries - electronic, marine, chemical, transportation, sound, and aerospace.
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