查询词典 chill casting

Based on solidification theory and analysis of process of Aluminum alloy Direct Chill casting, the control system of DC casting for big size billet has been designed. For improving the quality of billet-optimized control strategy of cooling water must be determined to eliminate the instability of the traditional feedforward control, PID control and cascade control have been introduced.

通过对铝合金DC铸造工艺过程的分析，建立了铝合金DC铸造的控制系统；在分析DC铸造铸锭结晶凝固原理的基础上，完成了冷却水量自动控制的系统设计，并进行了控制策略的选择；基于对铝合金直接水冷铸造，DC凝固原理和工艺过程的分析，本文提出了大尺寸铝合金圆锭铸造的控制系统设计方案。

A new direct chill casting model based on the proCAST software characterizes heat and stress conditions and solidification criteria, and assists in predicting crack formation during aluminum casting.

直冷模铸造的建模和优化，可以减少铸锭开裂这种新的直冷铸造模型是在正面铸造软件的基础上描述在压力和应力状态和凝固标准下预测铝合金铸造过程中裂纹的形成方式。

Aluminium chill casting, clear anodized matte ,to match E330, 1 pair

2.870 lbs 铝合金冷冲件，亚光阳极氧化，与E330配合使用，一对

By using artificial neural networks , the model of nonlinear mapping relationships among casting modulus, chill thickness, sand layer variety and thickness, and cooling surface enlargement coefficient has been built, which can be added to conventional foundry technology CAD system to design indirect chill of steel castings.

建立了表示铸件模数、冷铁厚度、挂砂层种类、挂砂层厚度和冷却面积扩大系数间非线性映射关系的人工神经元网络模型，该模型可以补充到以往的铸造工艺CAD系统中，对铸钢件挂砂冷铁进行工艺设计。

Al-Zn-Mg-Cu-Zr aluminum alloys were prepared by electromagnetic casting and direct chill casting, respectively. The effects of electromagnetic field on as-cast microstructure and alloy elements solid solubility inside crystals of Al-Zn-Mg-Cu-Zr aluminum alloy were investigated.

摘 要：分别采用电磁铸造和普通连铸技术制备Al-Zn-Mg-Cu-Zr合金，研究电磁场对合金显微组织、合金元素晶内固溶度的影响。

Al-Zn-Mg-Cu-Zr aluminum alloys were prepared by electromagnetic casting and direct chill casting, respectively. The effects of electromagnetic field on as-cast microstructure and alloy elements solid solubility inside crystals of Al-Zn-Mg-Cu-Zr aluminum alloy were investigated.

分别采用电磁铸造和普通连铸技术制备Al-Zn-Mg-Cu-Zr合金，研究电磁场对合金显微组织、合金元素晶内固溶度的影响。

Distinguished from the Cu content which have the optimal effect on cast strength is 5% with the chill casting, the Cu content that have the optimum effect on cast is 8% in the squeeze casting, furthermore, its strength effect is much better. The vacancy consistency of casts is raised in the squeeze casting which makes speed the diffuse velocity of atom and heat treatment process.

比压还增加了铜在铝基体中的溶解度，和金属型铸造时铜对铸件的最大强化作用发生在含量为5%时不同，挤压铸造时铜对铸件强化最大的含量为8%，强化效果较金属型铸造时更佳。

A mathematical model of the direct chill casting process for superlight Mg-Li alloy (LA141) slab has been developed using the finite differential method. Thermal boundary conditions including primary and secondary cooling conditions, have been selected based on knowledges of the physical process and the literatures. The variations of heat transfer coefficient between slab and dummy block interface resulting from the deformation of the slab have been considered.

中文摘要：运用有限差分法，对超轻Mg-Li合金（LA141）板坯直冷连铸过程温度场进行数值模拟，根据实际过程的物理现象以及文献资料确定包括一冷区、二冷区在内的边界条件，并且考虑底模与铸坯之间随着铸坯的变形而引起的换热系数的变化。

For the casting characteristics of more complex shape, the two ingates were designed at the same time. The casting was divided into 4 positions to calculate the volume of the riser, and the chill was used in order to obtain the directional solidification sequence.

根据铸件形状较复杂的特点，设计了两个内浇道；将铸件划分为4个补缩区域进行补缩，并配合冷铁来实现铸件的顺序凝固。

The chill block hanged sand and the riser were used to optimize the original casting process. Finally the shrinkage of the casting was eliminated.

采用挂砂外冷铁配合冒口使用对原方案进行了优化，最终消除了铸件中的缩孔缺陷。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。