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一、前言在我们伟大领袖毛主席的英明领导下,随着无产阶级文化大革命的胜利发展,随着思想和政治路线教育的深入进行,我国社会主义建设蒸蒸日上、欣欣向荣。无论是工农业生产或者是基本建设,都对铸钢件的生产在数量和质量上提出了更高的要求。战斗在铸钢生产战线上的广大工人、干部和革命知识分子,不断地和阶级敌人斗争,同时也不断地同铸造生产中危害质量的三大“敌人”——砂眼、气孔、缩孔作不疲倦的斗争,其中同缩孔作斗争更有着特别重要的意义。生产钢铸件时,安放合适的冒口是防止产生缩孔的主要措施。但是,在造型时,如何根据铸件的几何形状,来确定所需冒口的尺寸大小,到目前还缺乏一个既简单
I. INTRODUCTION With the wise leadership of Chairman Mao, our great leader, and the victorious development of the Great Proletarian Cultural Revolution, with the deepening education in ideology and political line, our socialist construction is thriving and thriving. Whether it is industrial or agricultural production or capital construction, the quality and quantity of cast steel products are put forward higher requirements. The vast number of workers, cadres and revolutionary intellectuals fighting on the production line of steel casting are constantly fighting the class enemies, and they continue to make unrelenting efforts with the three “enemies” that endanger the quality of production, such as trachoma, stomatal cavity and shrinkage cavity Tired struggles, of which the fight against shrinking holes are of even more particular significance. When producing steel castings, placing a suitable riser is the main measure to prevent cratering. However, in the modeling, how to determine the size of the required riser according to the geometry of the casting, to date there is still a lack of simple