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重点阐述了铝、铜合金铸件生产中较常应用的五种浇注时间计算公式的特点和存在的不足,分析了这几种公式在各自的材质铸件使用范围内出现的缺点及不足。研究及阐述了铝、镁合金和铜、锌合金铸件各自的通用有效浇注时间计算公式,及其良好的适用性和宽阔的适用范围。
The characteristics and shortcomings of the five kinds of pouring time formulas commonly used in the production of aluminum and copper alloy castings are emphatically elaborated. The disadvantages and shortcomings of these kinds of formulas appearing in the use of their respective material castings are analyzed. The common and effective pouring time calculation formulas of aluminum, magnesium alloy, copper and zinc alloy castings are studied and explained, and their good applicability and wide scope of application are also discussed.