铸造模的优劣将直接影响到铸件的质量和造型的生产率。为了满足建筑机械生产发展的需要,保证铸件质量,要求正确地设计模型,制造模型。同时还要保管好模型并及时维护修理 The quality of the casting mould will directly affect the quality of the casting and the productivity of the moulding. In order to meet the needs of the development of construction machinery production and ensure the quality of castings, it is required to properly design models and manufacture models. At the same time, we must also keep good models and maintain them in time.