Due to the increasing precision requirements for stainless steel castings in the
current industrial field, we take stainless steel as the object, use numerical
simulation to analyze the manufacturing process of castings, and explore the
mechanism of related defects and preventive measures. The results indicate that
in the process optimization of small castings, the maximum shrinkage and
porosity of the conventional scheme, the optimization scheme with the addition
of cold iron and insulation riser, and the optimization scheme with the improved
pouring system combined with the optimal parameters are 1.83%, 1.64%, and 1.42%,
respectively. The optimal pouring temperature, pouring speed, and shell
preheating temperature of medium- and large-sized castings are: 1620°C, 1.5
kg/s, and 1100°C, respectively. According to the aforementioned findings, the
study raises the standard of precision production for stainless steel, and fuel
the growth of the precision casting sector.
