The die casting mold parting surface is simple and easy to process
The simplicity and ease of machining of die-casting mold parting surfaces are important goals in mold design. This not only reduces mold manufacturing costs, but also shortens production cycles and improves mold precision and reliability. Simple parting surfaces typically take the form of flat or regularly curved surfaces, avoiding complex curves and slopes. This design reduces machining steps, lowers the requirements for processing equipment and technology, and makes mold fabrication easier.
From a machining perspective, simple parting surfaces are more suitable for conventional machining methods such as milling, grinding, and planing. For example, a flat parting surface can be milled on a milling machine and then ground to achieve high flatness and roughness requirements. The entire process is simple and efficient, and the machining accuracy is easy to control. Complex parting surfaces, on the other hand, often require high-precision machining methods such as EDM and wire cutting. These methods are not only time-consuming and costly, but also require a higher level of operator skill, increasing the difficulty and uncertainty of mold processing.
Simple parting surfaces can also reduce assembly errors in mold components. Due to the simple shape of the parting surface, the precision of the fit between the movable and fixed molds is easier to ensure, reducing the likelihood of flash, material leakage, and other problems caused by loose parting surface fit. During assembly, operators can more easily adjust and calibrate the parting surface, ensuring mold closing accuracy and improving the dimensional accuracy and surface quality of the casting. Furthermore, simple parting surfaces can reduce mold wear during use and extend the mold’s lifespan. Complex parting surfaces are more likely to cause stress concentration during mold closing and opening, leading to increased localized wear.
Easy-to-machine parting surfaces also facilitate subsequent modification and optimization of the mold. During mold trialing, if defects in the casting are discovered and the parting surface needs to be adjusted, simple parting surfaces can be more easily reground and modified, while complex parting surfaces are very difficult to modify and may even require reworking the entire mold part, resulting in significant cost and time losses. For example, when the position of the parting surface needs to be adjusted to improve the filling effect of the casting, a flat parting surface can be completed with simple milling or grinding, while a curved parting surface requires re-3D modeling and machining, a tedious and time-consuming process.
Furthermore, simple and easy-to-machine parting surfaces can improve mold production efficiency. In mass production, the speed and stability of mold opening and closing directly impact production efficiency. Simple parting surfaces can reduce resistance and impact during the mold opening and closing process, ensuring smoother mold operation and increasing the die-casting machine’s production cycle. Furthermore, due to the high precision and tight fit of parting surfaces, they can reduce the time required to clean up overflow during the die-casting process, reduce worker labor intensity, and improve overall production efficiency. Therefore, in die-casting mold design, simple and easy-to-machine parting surfaces should be selected whenever possible, while meeting the casting molding requirements, to achieve cost-effective mold production.
