In the mold accessories industry, ejector pins are vital. They push solidified plastic parts out of the mold cavity, a key step in plastic injection molding. In high – volume production, like making smartphone cases, their proper function is crucial. A malfunctioning ejector pin can cause jams, damaged products, and production delays.
Material selection for ejector pins is a hot topic. High – speed steel offers great wear resistance and high – temperature stability, while alloy steel balances strength and toughness well. Surface treatment also matters. Smooth, precision – ground ejector pins reduce friction and improve part quality. Treatments like chrome plating or nitriding boost corrosion resistance and hardness.
As demand grows for miniaturized plastic products, ejector pin design is evolving. Micro – ejector pins are being developed to handle tiny components. Their precision is key to avoid damaging these miniature parts. Ejector pins are at the heart of innovation in the mold accessories field, with continuous efforts to enhance their performance.
