均衡凝固有限补缩原理,在我厂拖拉机球铁件上已用于10多种零件,发挥了明显的效力,提高了球铁件的质量,降低了废品率,提高了工艺出品率,节省大量的能源和材料。取得了显著的经济效益。车架前梁,材质QTS00—7,重量136kg,湿砂型。铸件基本壁厚12～15mm,最大热节φ50,原工艺两个冒口,其中有一个正对热节补缩,但有时热节内部缩 Equilibrium solidification limited compensation principle, in our factory tractor ductile iron pieces have been used for more than 10 kinds of parts, has played a significant effect, improve the quality of ductile iron pieces, reducing the rejection rate, improve the craft yield, save a lot Energy and materials. Achieved significant economic benefits. Frame front beam, material QTS00-7, weight 136kg, wet sand type. Casting the basic wall thickness of 12 ~ 15mm, the largest hot section φ50, the original two riser process, which is a hot section of the shrinking, but sometimes shrinking internal heat