本文根据铸铁件均衡凝固理论与有限补缩原则,提出了飞边冒口工艺,它以短,薄、宽的冒口颈与铸件相连,消除了接触热节,自适应性地调节铸件的补缩程度。和顶注径向引入的浇口相配合,可以有效地防止铸件缩孔、缩松、气孔和夹渣缺陷。经生产验证,稳定可靠。 Based on the theory of equilibrium solidification and finite shrinkage of cast iron, this paper presents a flying riser riser which is connected with castings by short, thin and wide spout neck, which eliminates the contact with hot joints and adjusts the fill of castings adaptively Reduced degree. And the top of the radial injection of the gate with the match, can effectively prevent the casting shrinkage, shrinkage, porosity and slag defects. After production verification, stable and reliable.