近年来，消失模铸造因其他污染小、工艺灵活、劳动强度低、重复性好等优点在国内迅速发展，尤其是在生产箱体、壳体类产品时，消失模工艺具有一定优势。 本文针对飞轮壳等产品在消失模工艺铸造过程中出现的黏砂、气孔、冲砂等缺陷进行分析。 通过调整模样的组合工艺方式、优化产品浇注系统、布置排气排渣冒口以及确保内浇道进水口布局的合理性，同时结合生产情况，提出了解决相关产品铸造缺陷的措施。

 In recent years, lost foam technology has rapidly developed in China due to its advantages such as low pollution, flexible processing, low labor intensity and good repeatability, showing significant advantages over other casting processes especially in the production of box and shell products. In this paper, defects such as burning-on, porosity and sand wash that are prone to occur in products such as flywheel housing during the lost foam casting process were analysed. By adjusting the combination process method of the pattern, optimizing the product pouring system, arranging the exhaust and slag discharge risers, and ensuring the rationality of the layout of the inner gate inlet, measures to solve the casting defects of related products are proposed based on the production situation. After the production and machining process, the goal of solving casting defects in the product is achieved.