| Abstract [eng] |
Injection molding is the process used to produce products of desired shape and size and normally parts made in injection molding process can have their own distinctive set of possible defects like sink marks, weld lines, war page, shrinkage, shot shorts, etc. due to the complex technology involved. To minimize these defects and to obtain good quality of product, optimization of parameters must be carried. In this project Acrylonitrile Butadiene Styrene (ABS with grade IM14GM) thermoplastic was used and ANSYS 14.5 software has been used to optimize the parameters like temperature and pressure to reduce the shot short defect which means incompletion filling of mold and to produce good quality of ABS products and in addition, fabrication was carried out with the results obtained in the analysis and then these fabricated materials was subjected for thermal testing to determine quality of the product. Generally, ABS plastics have various applications that include electrical and electronic equipment, as well as widespread applications in automobiles, communication instruments, and other commodities. Among these applications, the motor cover of the table top grinder was the ABS plastic product chosen that was produced using injection molding machine since motor cover has many applications. The injection molding machine has different zones of which the optimization was carried out. The optimized temperatures of nozzle, zone 1, zone 2, zone 3, zone 4, with which the good quality motor cover was produced is 100°C 180°C, 160°C, 150°C, 140°C respectively and the injection pressure was optimized as 100 bar. The obtained result was proven by fabricating the product using these parameters. |
