该研究通过试验模型测量局部加压过程中金属型、铸件和加压杆的温度变化曲线，分析了传热与凝固现象。
The heat transfer and solidification change are analyzed by measuring the temperature change curves of metal mold, casting and pressurized bar in experimental model during local pressurization.
用机器制造，安装和装配铸件和其他零部件，用以制作所需形状的精密模型，如金属图案，芯盒和匹配板。
Machine, fit and assemble castings and other parts to make precision models of required shape such as metal patterns, core boxes and match plates.
本文以外节点直接差分法，建立了铸件凝固温度场的数值模拟模型。
A model of thermal field of casting is developed by using direct difference (outside node) method.
根据铸件结构特征和不同区域拘束度的不同，设置不同的反变形系数，对原始模型进行反变形处理。
Different anti-deformation coefficients were set on the original mode, according to casting structural features and binding in different regions.
综合考虑凝固、冷却、打箱、切除浇注系统和热处理影响建立数值模型，准确预测铸件在整个热加工工序中的变形。
Numerical model was established after considering solidification, shake out, clearing getting system and heat treatment to predict the casting deformation during hot working processes.
如果铸造空心铸件时模型上包含伸长杆便于在砂中放置砂芯的空间称为型芯座。
If a hollow casting is to be made the pattern will include extension pieces so that Spaces to accept the sand core are molded into the sand. These additional Spaces in the mold are termed core prints.
建立了铸件成品率的数学模型，以实现铸件成品率的微机管理。
The mathematical model of finished product rate is developed in order to realize the microcomputer management of finished product rate.
高质量的钛合金铸件与熔模型壳的性能和表面质量有着直接的关系。
High quality titanium casting is directly related to property and surface quality of shells.
阐述了泡沫聚苯乙烯模型的材料选择原则、模型制造工艺与模型质量与铸件质量的密切关系。
The material selection of styrofoam and the relation of lost foam process to mold quality were described.
为检验模型的准确性，试验研究了弓形应力框试验铸件的浇注过程。
To verify the accuracy of models for temperature analysis, an arched stress...
中小型尺寸的铸件砂型是在一个砂箱中制造，砂型由两部分或更多部分组成，以利于模型的顺利取出。
Sand molds for the production of small and medium-sized castings are made in a molding box. The mold is made in two or more parts in order that the pattern may be removed.
中小型尺寸的铸件砂型是在一个砂箱中制造，砂型由两部分或更多部分组成，以利于模型的顺利取出。
Sand molds for the production of small and medium-sized castings are made in a molding box. The mold is made in two or more parts in order that the pattern may be removed.
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