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作者根据控制压力冒口原理,对冒口体、冒口颈、冒口顶部倒角的形状、大小进行四种方案试验.并根据生产实际情况,对采用控制压力胃口条件,如化学成份、浇注温度、温差波动范围、孕育工艺等因素进行了大量试验和统计,为正确设计控压冒口系统,以及采取相应的工艺措施,提供了大量数据,扩大了控制压力冒口使用范围,同时取得较好经济效益.
According to the principle of controlling pressure riser, the author carried out four kinds of scheme tests on the shape and size of riser body, riser neck and top chamfer of riser.According to the actual situation of production, the author used control pressure appetite condition such as chemical composition, Temperature, temperature fluctuation range, inoculation process and other factors were a large number of tests and statistics, control pressure riser system for the correct design, and take the appropriate technical measures to provide a large amount of data to expand the use of control pressure riser, while obtaining more Good economic benefits.