Sheet Molding Compound (SMC) molding is a prominent manufacturing technique used in the production of composite parts, particularly in automotive and aerospace industries. This process involves the use of a preformed, fiber-reinforced thermosetting resin composite material that is molded into complex shapes under heat and pressure. SMC molding is celebrated for its strength, durability, and versatility, making it a popular choice for high-performance applications.

    SMC molding begins with the preparation of the Sheet Molding Compound itself. This compound consists of chopped glass fibers, resin, and various additives. The resin is typically a thermosetting plastic such as unsaturated polyester, which is combined with fillers and catalysts to enhance its performance. The chopped glass fibers provide the necessary reinforcement, contributing to the material's strength and rigidity. The mixture is then spread into sheets, which are cut to the required size for molding.