DOI: https://doi.org/10.36347/sjet.2025.v13i02.003

Pages: 84-90

The usage of plastics is mainly due to their lower weight, melting temperature and cost compared to other materials like metal, composites etc, accompanied with decent flow characteristics. Thus, the demand for smaller, precise and compact designs with intricate geometries, on using plastics, has to be met. Injection molding is an ideal plastic manufacturing process due to its ability to manufacture complex plastic parts with high precision and production rates at low operating costs with only a relatively high initial investment for mold design and fabrication. This study, structural analysis of a 0.3% carbon of medium carbon steel toilet brush cup injection mold, centers on the structural analysis of the assessment and reassessment of the heat treated medium carbon steel injection mold material to ascertain the structural integrity of the assessed and reassessed mold material. The maximum equivalent von –mises stress and directional deformation of the structural analysis of the mold material before heat treatment were 3.441*109Pa and 9.0095*10-4m respectively. While the maximum equivalent von –mises stress and directional deformation of the structural analysis of the mold material after heat treatment were 3.432*109Pa and 8.4722*10-4m respectively. The results were favorable for injection molding application and wear reduction.