Effect of Cooling Channel Diameters on Warpage in Plastic Injection Molds: A Comparative Analysis

Warpage, or dimensional distortion, is a significant issue in the plastic injection molding process, negatively affecting both product quality and manufacturing efficiency. The aim of this study is to investigate the effect of different cooling channel diameters on warpage behavior in plastic parts. In this study, ABS (Acrylonitrile Butadiene Styrene) material was used, and simulations were conducted with four different cooling channel diameters (6 mm, 8 mm, 10 mm, and 12 mm). The simulations were performed using Moldex 3D software, with 32 cooling channels used for each diameter. Mold, environmental, and material parameters were optimized for the simulations. The simulation results showed that cooling channels with a diameter of 6 mm increased the warpage rate, while 8 mm and 10 mm channels demonstrated lower warpage values. The lowest warpage was observed with the 8 mm diameter. Moreover, the effect of 12 mm diameter channels was minimal. While the effect of cooling channel diameter on warpage is limited, proper optimization of channel size and placement can lead to improved thermal distribution and dimensional accuracy in the plastic injection molding process.