Degating

Degating refers to the process of removing a gate from a molded part. A gate is a channel through which molten material is injected into a mold cavity during the manufacturing process. Once the material has solidified and the part is formed, the gate must be detached from the main component. This is a common post-molding operation in various industries, including plastic injection molding, metal casting, and rubber molding.

The method of degating can vary depending on the material, the size and complexity of the part, and the desired finish. For plastic parts, common degating techniques include manual removal with tools like knives or pliers, automated cutting with robots or specialized machinery, or cryogenic deflashing where the part is frozen and then tumbled to break off the gate. In metal casting, gates are often removed by sawing, grinding, or using specialized cutting tools.

The primary purpose of degating is to produce a finished product that is free from the excess material of the gate, ensuring both aesthetic appeal and functional integrity. Inaccurate or incomplete degating can lead to defects, sharp edges, or areas where the part may be weakened. Therefore, precision and care are important aspects of this post-processing step. The efficiency of the degating process can also significantly impact production costs and throughput.