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进行铜合金板类铸件砂型铸造工艺设计时,在铸件的浇注位置及冒口位置确定后,冒口尺寸的确定是重要的内容,通常采用经验设计方法或凝固模拟技术,但前者不够准确,而后者繁复费时,故缺乏一种既较为准确、又十分便捷的冒口设计方法去指导工艺设计。笔者根据长期的实践经验及统计分析,并结合计算机凝固模拟技术,找出铝青铜及黄铜异形板类铸件形状参数与冒口形状参数之间的关系,建立了较为准确和便捷的冒口计算、核算方法,既能保证铸件质量而又能获得较高的工艺出品率,还能提高工艺设计效率,这对于铜合金板类铸件冒口设计是有指导意义的。
In the design of sand casting process of copper alloy sheet casting, the determination of riser size is an important part in the casting position of castings and the position of riser, which is usually based on empirical design method or solidification simulation technique, but the former is not accurate enough Those complicated and time-consuming, so the lack of a more accurate and very convenient riser design method to guide the process design. Based on long-term practical experience and statistical analysis, combined with computer simulation of solidification technology, the author finds out the relationship between the shape parameters of aluminum bronze and brass shaped plate castings and riser shape parameters, and establishes a more accurate and convenient riser calculation , Accounting methods, both to ensure the quality of castings but also to obtain a higher yield of technology, but also improve the efficiency of process design, which for the riser of copper alloy plate casting design is of guiding significance.