Effects of hollow sand mold on the microstructure and mechanical properties of a low pressure aluminum alloy casting

• DOI: 10.1016/j.jmrt.2023.12.270
• Publication Date: 2024-01-09T01:41:31Z
• Authors: Baolin Liu; Jinwu Kang; Xin Yang; Bo Zhang; Yi Bian
• Keywords: Sand casting

The hollow mold revolutionizes conventional dense design as it can optimize the solidification and cooling processes of casting offer potential to improve performance castings. In this paper, effect structures on microstructure mechanical properties a low pressure thin-walled aluminum alloy conical cabin was investigated. A combined by four sectors with different shell thicknesses tactfully designed. delayed casting. They significantly reduced pore defect from 0.4 % 0.03 at lower, 0.68 0.04 middle 0.3 top, compared mold. lower areas casting, improvements 1.0 1.1 in were respectively achieved when applying 50 mm-thick-shell sand molds using mold, while an improvement upper area 70 mm-thick-shell. This allows designers create depending position meet specific needs. For example, thin for bottom achieve high fluid flow feeding thick top improved cooling. castings wall thickness 10 mm–20 mm, most effective is mm–70 mm. provides feasibility differentiated semi-quantitatively control castings, which be applied production high-end future.