By use of orthogonal test design, how the injection speed, pouring temperature and mold temperature effects the casting shrinkage porosity forming is studied.
然后，本文通过正交试验的方法研究了压射速度、浇注温度和模具预热温度对铸件缩松缩孔缺陷的影响。
Based on calculated temperature distribution in the casting, the prediction of shrinkage defects can be achieved, which can be used as a tool to optimize the design of foundry technology.
基于温度场分析结果的铸件缩孔缩松预测可以优化铸造工艺设计。
Our technical staff of high pressure boiler tube steel casting properties that mainly by casting metal liquidity, shrinkage characteristics, segregation orientation to comprehensive evaluation.
我们高压锅炉管的技术人员说钢的铸造性能主要由铸造时金属的流动性、收缩特点、偏析倾向等来综合评定。
Large thick-section ductile Iron housing easily produces casting defects such as shrinkage cavity, shrinkage porosity, graphite floating and spheroidizing decay.
大型厚断面球墨铸铁件在铸造过程中极易产生缩孔、缩松、石墨漂浮及球化衰退等铸造缺陷。
Shrinkage and shrinkage porosity, stress and deformation often occurs during the production of heavy steel casting.
大型铸钢件在实际生产中易产生缩孔缩松、应力变形等缺陷。
Shrinkage cavity predication is main purpose of casting simulation.
预测缩孔缺陷产生是铸件凝固模拟的主要目的。
But the instruments of testing heat check, stress and linear shrinkage of casting alloy at present are not only inconvenient in operation but also unitary in function.
已有的测定铸造合金热裂、应力、线收缩参数的仪器不仅操作不便，而且功能单一。
Using thin, wide ingate and chill can prevent the shrinkage defect, and improve casting yield by 3%.
采用薄、宽的内浇道和冷铁工艺消除了飞轮铸件的缩孔缺陷，铸造工艺出品率提高3%；
The main task of this paper is to develop prediction & analysis system of shrinkage cavity and porosity defect in a casting for foundry engineering application.
本论文以有限元分析软件为开发平台，运用设计参数化和功能模块化技术，初步开发了面向铸造工程应用的铸件缩孔缩松预测及缺陷分析系统。
A new type of multi-function system for testing linear shrinkage, stress and hot cracking of casting alloy is introduced in the paper.
介绍一种新型铸造合金线收缩-应力-热裂特性综合测试系统。
A new multifunctional device for testing linear shrinkage, stress and heat check of casting alloy easily and quickly is developed in the paper.
本文研制一种新型铸造合金线收缩-应力-热裂特性多功能测定仪，它可以方便准确的测定金属热裂、应力、线收缩特性。
Batch production shows there are no shrinkage cavity and porosity in casting, and no blowholes and sand inclusions on the top surface. The yield of the casting is 81%.
经批量生产验证，铸件内无缩孔、缩松缺陷，上表面无渣孔、气孔缺陷，工艺出品率81%。
The production shows that there is no shrinkage, blowhole and inclusion in the casting, the overall yield of the casting is 95%.
生产结果表明，铸件无缩孔、气孔、夹渣缺陷，铸件工艺出品率95%。
The effects of casting modulus, pouring temperature. carbon equivalent and mould toughness on the solidification shrinkage of ductile cast iron was investigated experimentally.
实验测定了化学成分、浇注温度、铸件模数和铸型刚度对球墨铸铁收缩特性的影响。
The common defects of the housing casting include cracks, sand drop, slag inclusion, shrinkage porosity and rough grain, etc.
机架的常见缺陷有裂纹、掉砂、夹渣、缩孔缩松和晶粒粗大等。
According to the simulated temperature fields and solid fraction, the hot spot and shrinkage porosity are not found in the bolster casting, so the new casting process is feasible.
温度场和固相分数的模拟结果表明，铸件没有产生热节和缩孔缺陷，表明了新工艺的可行性。
The numerical simulation of temperature field and shrinkage defect prediction for a valve casting, which was involved in 4 kinds of casting proces.
对采用4种不同铸造工艺方案的阀体铸件凝固过程进行了数值模拟及缺陷预测，获得了与试验相一致的模拟结果。
With a wheel hub casting as example, the measures to prevent shrinkage defects were proposed.
以轮毅铸件为例提出了防止缩孔缩松缺陷的工艺措施。
It is concluded that we can take measures to reduce shrinkage of concrete during casting of beam in wharf construction.
在现浇码头上横梁时可采取措施，减小混凝土收缩。
The casting defects in the railway frog were mainly the nonmetal inclusions and the shrinkage.
辙叉内部的铸造缺陷主要是沿晶界析出的非金属夹杂物和缩松。
Some researches on the shrinkage percentage of the casting have been done according to the dimension of the castings made from the ice patterns.
根据由冰模所翻制铸件的尺寸对铸件收缩率进行了研究。
Centerline shrinkage is the main defect that affects the inner quality of continuous casting slab.
连铸坯内部中心缩松、缩孔是影响铸坯内部质量的主要缺陷之一。
According to the optimal results, the flange casting with the ratio of diameter and height of 10 was produced successfully, the shrinkage defect was avoided, the quality of the castings was ensured.
根据优化结果进行生产，成功地生产了直径与高度比为10的法兰铸件，避免了缩孔缺陷，保证了铸件的质量。
Influence of the initial temperature fields and mold hardness on the shrinkage defect of ductile iron casting by EPC process was mainly investigated in this paper.
本文主要讨论了初始温度场和铸型硬度对消失模铸造球墨铸铁件收缩缺陷的影响。
It is pointed out that main factors affecting profile are casting roll's shrinkage fit quality, cooling efficient, grinding accuracy, casting and rolling parameters 'choice and matching.
指出，铸轧辊的热装质量、冷却效果、研磨精度、铸轧参数选择及其搭配是影响厚差及板凸度的因素。
It is liable to produce various casting defects, such as coarse grain, shrinkage cavity, shrinkage porosity, hot tearing, microstructure segregation and solute segregation.
在铸造过程中容易产生各种铸造缺陷，如晶粒粗大、缩孔缩松、开裂、组织和成份偏析等。
The rate of nomal fracture is keeped about 97% by optimizing roll gap shrinkage and strengthening management of second cooling and Fan-paragraph, according to now level of casting machine.
并根据连铸机现状水平，采取优化辊缝收缩方案、加强二冷系统和扇形段的管理，使得高强船板断口合格率稳定在97%左右。
On the basis of 3-D temperature fields calculation of aluminum alloy casting, the liquid face shrinkage capacity method of varied several melt pool is put forward to predicate shrinkage cavity;
在铝合金铸件三维温度场计算的基础上，提出了采用动态多熔池等效液面收缩量法对缩孔进行预测；
The optimized casting process can optimize effectively temperature field and reduce the possibility of shrinkage holes(porosities), obtaining the qualified shell with high quality.
优化后的薄壁铝合金壳体铸件的低压铸造工艺方案合理，可以有效地优化壳体温度场，降低铸件出现缩孔缩松几率，生产出高质量的合格铸件。
The optimized casting process can optimize effectively temperature field and reduce the possibility of shrinkage holes(porosities), obtaining the qualified shell with high quality.
优化后的薄壁铝合金壳体铸件的低压铸造工艺方案合理，可以有效地优化壳体温度场，降低铸件出现缩孔缩松几率，生产出高质量的合格铸件。
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