Compression Molding: A Versatile Manufacturing Process
Introduction
Compression molding is a widely used manufacturing process that allows for the creation of various parts, from large airplane components to small baby-bottle nozzles. In this article, we’ll explore what compression molding is, how it works, and its applications.Get more news about
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How Compression Molding Works
Mold Creation: Tooling for compression molding can be produced through machining, die casting, or even 3D printing.
Machine Setup: Depending on the specific machine, operators clean the mold, turn on the heat, and perform other setup tasks.
Material Preparation: Select the material (referred to as a “charge”) and determine the proper amount.
Charge Insertion: Place the charge in the center of the bottom mold.
Compression: Close the top mold, apply pressure, and wait for the piece to form. Heat is often used during this process.
Part Release: Remove the finished piece.
Cleaning: Cut off any excess material (flash) around the edges and clean the part.
Comparison with Injection Molding
Compression Molding: Molds are closed around the charge.
Injection Molding: The charge is injected into a closed mold cavity.
Use Cases:
Compression Molding: Ideal for relatively simple designs and ultra-large basic shapes.
Injection Molding: Better for complex parts and shorter cycle times.
Advantages of Compression Molding
Lower-pressure production method.
Potentially lower tooling costs.
Suitable for a wide range of materials.
