Non-riser casting method for flywheel of marine diesel engine

According to the riser-free casting method for the flywheel of the marine diesel engine, specific graphitization self-expansion during solidification of nodular cast iron is fully utilized, hypereutectic carbon equivalent design is adopted, the optimal casting performance is achieved, a high-strength resin sand riser-free sand mold is adopted, the technological process is optimized, and the high-strength resin sand riser-free sand mold is adopted; the technological process is optimized, the ultra-thick nodular cast iron flywheel casting which is stable in quality and free of the shrinkage porosity defect can be obtained under the condition that no dead head exists, the technological yield and production efficiency of the flywheel casting are improved, and the production cost and economic benefits are reduced. 提供一种用于船用柴油机飞轮的无冒口铸造方法，充分利用球墨铸铁凝固时特有的石墨化自膨胀，采取过共晶碳当量设计，实现最佳铸造性能，再采取高强度的树脂砂无冒口砂型，优化工艺过程，采取高强度的树脂砂无冒口砂型，优化工艺过程，能够在没有冒口的情况下获得质量稳定的无缩松缺陷的超厚球墨铸铁飞轮铸件，提高了飞轮铸件的工艺出品率，生产效率，降低生产成本，经济效益。