Pump Shell Sand Casting Mould Optimal Design And Research On Quality Control

In this paper, a pump shell sand casting mold by a manufacturer was chosen for study. Traditional handmade wooden mold using a process prone to wear and tear, damage, repair to be repeated, resulting in poor stability of the spatial structure of the size of the product in the spiral flow channel problems. To replace the original metal look like wood molding solutions have been proposed, the use of 3D graphics software for pump housing sand casting mold design and molding process by optimizing product quality control, instead of the traditional wooden mold production methods.The main research contents in this paper includes: ①3D modeling for pump shell mold structure and optimization; ②Casting process performance analysis and determine the parting surface; ③Mold filling and solidification process of virtual simulation; finite element; ④Casting defect probability forecast; ⑤Gating system optimization and simulation analysis.Furthermore,the solidification process parameters such as temperature distribution, and forecast casting shrinkage, porosity and other defects position were obtained in this paper, through the top of pump shell casting mold during casting process and low filling, solidification temperature field simulation of flow field, get two cast metal flow patterns under way, Finally, after the creation of the riser and the casting plus cold iron upside down the way the system was optimized and comparative analysis of the two programs under optimized casting molten metal filling and solidification process, temperature, flow distribution, and defect location. The results show that the thickest section of the outside cold and heat in the cast iron structure formation, the implementation of rapid solidification, artificially basic balance throughout the casting temperature field, can effectively improve the probability of contraction casting defects, thus achieving improved The purpose of the quality of the casting.