分析了机架底板铸件凝固补缩过程。
The solidification period of housing backplane casting has been analyzed.
原料磨衬板壁厚相差大，需要大冒口补缩。
Original material milling's linear board needs feeding in large scale riser because there are many differences in thickness.
研究了金属液在连续纤维预制型中的横向补缩。
Transverse feeding of molten metal in continuous fiber preform was investigated theoretically and experimentally.
由于球铁的收缩大于膨胀，球铁件铸造必需外部补缩。
Since contraction of nodular iron is bigger than its expansion nodular iron castings must be fed from outside to prevent shrinkage defect.
首先，对“裸件”（无任何浇注或补缩系统）进行模拟。
This process involves running an initial simulation on a 'naked' casting, that is, a part without any gating or feeding system.
本文使用基于温度场的凝固补缩模型来进行热裂纹数值模拟。
Hot crack numerical simulation has been handled by 'solidification-feeding' model based on temperature field.
本文还对该浇冒口系统提高补缩效果的原因进行了初步分析。
The cause of the effect of shrinkage improvement in this pouring system is also analysed.
利用消失模铸造压力凝固技术增强AZ91D镁合金补缩能力。
Feeding capacity of AZ91D magnesium alloy is enhanced by using pressure solidification in lost foam casting(LFC).
保温冒口的作用是通过延长冒口凝固时间来提高冒口的补缩效率。
The effect of heat insulting feeder is to increase the feeding effect of the feeder through prolonging its solidification duration.
采用发热保温冒口，由于冒口的补缩效率提高，缩松倾向明显减少。
The distribution of porosity defects can be reduced to the least by using exothermic insulating riser.
实际证明：采用均衡凝固理论设计球铁圈形铸件的补缩系统是可靠的。
Subsequently it is reliable for the proportional solidification theory to design feeding system of ring carrier casting of nodular iron.
液态模锻理论是对高压下结晶凝固和塑性变形下强制补缩复合过程的认识。
The theory of liquid metal die forging is the understanding of the process which combines solidification under high pressure with forced feeding by plastic deformation.
介绍均衡凝固的基本原理，叙述铸件结构、冒口位置和冷铁对补缩的影响。
The basic principle of the proportional solidification theory was introduced, and the influences of casting construction, feeder position and chill on feeding effect was described.
结果表明：随着补缩时间和旋转速度的增加，补缩过程中渗流流体体积增大；
The results show that the infiltration volume in feeding process increases with increasing the feeding time and velocity or decreasing the fluid viscosity and eyelet number of porous medium.
表明采用收缩模数法计算浇注系统尺寸，用浇注系统补缩的无冒口工艺是可靠的。
The results show that the gating and feeding system without riser is reliable through calculating the sizes of gating system by moduli calculation method.
本文针对提高铸钢件冒口补缩效率问题，给出了微珠保温冒口的配方及生产工艺；
This article is written to explain how to improve the efficiency of riser feeding for cast steel items.
本文根据均衡凝固原则、有限补缩的方法，推荐了厚大铸铁件的顶冒口尺寸系列。
In accordance with proportional solidification principle and limited feeding method, a series of top riser size is recommended to heavy castings.
在大量试验研究的基础上，提出了一项铸铁件补缩新工艺—富有弹性的弧形砂箱工艺。
On the basis of a number of experiment, the author developed a new feeding technology for iron castings—Arc Flask which be full of elastic.
铸钢皮带轮，壁厚不匀，热节点多，补缩通道狭窄，很难用设置冒口的方法给予补缩。
Cast steel pulley with wall unevenness, many hot pitch points and narrow feeding channel is difficult to be fed by setting up a head.
利用球墨铸铁凝固过程中的石墨化膨胀，进行自身补缩，可以实现少胃口或无冒口铸造。
The self-compensated contraction caused by graphite dilatation in the solidification process of nodular cast iron makes casting with less flow-off or casting without flow-off possible.
据金属凝固理论和磁流体力学分析，电磁搅拌力引起的动量对流对补缩的促进作用并不大。
Based on theory analysis of metal solidification and hydrodynamics, momentum convection generated by rotating electromagnetic field do not improve feeding obviously.
修正了临界补缩固相率的概念，提出了立式离心铸造条件下的动态临界补缩固相率新概念。
Concept of critical feeding of solid fraction has been amended, and new concept of dynamic critical feeding of solid fraction under the vertical centrifugal condition was introduced.
锌铝系合金铸造时出现反常的底部缩孔，而用一般上置式冒口对此类缩孔的补缩效果甚微。
There is abnormal bottom shrinkage in Zn Al alloy castings and top riser has little effect on them.
利用凝固过程自补缩，可使铸件表面质量好，无缩孔、缩松等铸造缺陷，工艺出品率大大提高。
Using self-feeding in solidification can make good surface quality, no shrinkage casting defects of castings; the technology product yield of the casting greatly increases.
由经验法则，其总厚度的软垫及铸造(在垫板上的位置)，应不低于上就有五分之一的金属补缩距离。
By rule of thumb, the total thickness of pad and casting (at the pad location) should not be less than one-fifth of the metal-feeding distance.
里石门水电站不锈钢整铸转轮尺寸小、叶片簿、叶片间隙小，整体结构不利于铸件的顺序凝固和补缩。
The technique of stainless steel integral cast runner for Lishimen water power station is presented in this paper.
对于平板类、厚大凹型类铝合金铸件，采用边侧冒口的浇注系统，能提高铸件的补缩效果，生产出合格铸件。
Feeding effect can be improved with qualified casting using side riser gating system for plate or heavy concave aluminum alloy casting.
对不同保压压力下真空差压铸造试样致密度进行分析，探讨真空差压铸造工艺的凝固补缩特性，建立凝固补缩过程的数学模型。
Through analyzing the density of vacuum counter-pressure casting samples under different keeping pressures, their solidification feeding behavior and mathematical model were discussed.
对不同保压压力下真空差压铸造试样致密度进行分析，探讨真空差压铸造工艺的凝固补缩特性，建立凝固补缩过程的数学模型。
Through analyzing the density of vacuum counter-pressure casting samples under different keeping pressures, their solidification feeding behavior and mathematical model were discussed.
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