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热节 [rè jié]
thermal center
- 前言： 铸态稀土镁球铁铸件热节或最后凝固部位有时会出现渗碳体，因而被称为“反白口”。
Sometimes, cementite could be found in the hot spots or the last solidifying location of the RE-Mg nodular iron castings. - 建立了铸件凝固过程热应力模拟的一维流变学本构方程，并且对一端受约束一端带热节的铸钢试棒进行了数值模拟，进而研究了热裂机理。
The unidimensional constitutive equations of rheological model have been established and stress and strain fields of cast steel test bar with hot spot at one end was calculated. - 得到有益于认识铸件中此类接头凝固特性和热节位置的变化规律，对工艺设计者认识和防止成型过程中产生凝固收缩缺陷是很必要的。
The results are very important to understand the solidification characters of steel castings with T conjunction and to estimate the position of the hot-spot in the castings to avoid shrinkage defects.
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