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水冷却要收缩,结冰要膨胀。以一杯水为例,通过控制冷却收缩部分、结冰膨胀部分的体积比例,研究了冷却结冰模式对体收缩行为的影响。计算和分析表明:同时冷却,同时结冰模式,外部填加的补缩量最多,达4.2%;部分冷却、部分结冰、部分保温模式,外部填加量可以减少至0～4.2%之间。水结冰膨胀和灰铸铁件、球墨铸铁件凝固膨胀有相似之处,该研究对灰铸铁件、球墨铸铁件补缩设计有参考价值。
Water cooling to shrink, icing to swell. Taking a cup of water as an example, the effect of cooling icing mode on the body shrinkage behavior was studied by controlling the volume fraction of the contracted cooling and freezing icing sections. Calculation and analysis show that the cooling rate is 4.2% at the same time of cooling and freezing mode, while the amount of external filling is up to 4.2%. Partial cooling, partial freezing and partial heat preservation mode can be reduced to 0 ~ 4.2% . Water icing expansion is similar to the gray cast iron and ductile iron castings. The research has reference value for the design of gray cast iron and ductile iron castings.