Design of Optimal Casting Method for Track Shoe Parts of Super-large Excavator Caterpillar using Two-cavity Sand Casting Technology of Wear-resistant Alloy Cast Steel

This study aims to develop two-cavity track shoe parts with an extended lifespan by applying sand casting technology using wear-resistant alloy cast steel. This approach reduces manufacturing costs while enhancing product durability. Previously, track shoe parts produced using single-cavity sand casting technology faced issues related to limited product lifespan, leading to frequent replacements and increased costs. Additionally, quality concerns have emerged due to these factors. To address these challenges, the two-cavity design was introduced to improve fluidity, thereby enhancing both product life and cost efficiency. Furthermore, the casting method for track shoe parts in two-cavity sand casting was optimally designed through casting solidification analysis. In particular, the size and position of the chill densener were modified to prevent shrinkage defects in the lug section of the track shoe parts.