The quality of twin roll thin strip is greatly effected by the columnar zone proportion in solidification structure of thin strip.
本文在已建数学模型的基础上 ,模拟预测了浇铸温度、铸辊转速、熔池高度等工艺参数对双辊薄带凝固组织中柱状晶区比例的影响。
The heat regeneration of cylindrical V/AC catalyst for adsorbing SO2 and NH3 regeneration were studied by an atmospheric fixed-bed reactor.
使用常压固定床反应器,考察了吸附SO2的柱状V/AC催化剂的热再生和NH3再生行为。
Steel Billets without Columnar Grain in Continuous Casting-Semisolid Continuous Casting;
无柱状晶钢坯的连铸技术——半固态连铸
Directional recrystallization can be used to produce single crystals or columnar grain structure,which can show enhanced creep properties,improved low-cycle fatigue resistance and/or improve crack-stopping behavior.
用定向再结晶技术可以制备单晶或柱状晶结构。
Cu-Al-Ni wires with columnar grain structure fab- ricated by heated mold continuous casting process were con- ducted bending fatigue and tensile fatigue tests to study the behavior of grain boundaries in fatigue process.
用热型连铸法制取具有柱状晶组织的Cu-Al-Ni合金丝,进行弯曲疲劳和拉伸疲劳试验,研究晶界在疲劳过程中的行为。
Using appropriate process parameters, the Cu-Al-Ni shape memory alloy with good surface quality and unidirectional dendritic crystal was prepared by the self-made ohno continuous casting equipment.
在自制的水平热型连铸设备(OCC)上,采用一定的工艺参数,制备出表面呈镜面,内部组织沿轴向定向排列的柱状组织Cu-Al-Ni形状记忆合金。
Discotic liquid crystals self-assemble to highly ordered hexagonal columnar mesophase (Colho) and exhibit anisotropic high charge carrier mobility, and can be used as organic opto-electronic materials.
采用分子间氢键锚定柱状相,获得介晶相温度范围宽、有序度高的苯并菲盘状液晶是本研究的目的。
The results showed that these compounds exhibit high clearing points, stable columnar mesophases and wide mesophase ranges.
结果显示:此类化合物有高的清亮点,稳定的六方柱状相以及较宽的介晶相范围,且随着软链碳原子数的增加,化合物的熔点和清亮点均出现下降趋势,但六方柱状相的有序性却没有发生很明显的变化。
Distribution of the growth orientation of Ni-Ti alloy columnar crystal;
Ni-Ti合金中基体柱状晶的取向分布规律
The results showed that pure copper plates of 25mm in width and 5mm in thickness with luminant surface and columnar crystals can be continuously and stably fabricated under the conditions of melting temperature 1160℃,drawing speed .
结果表明:当熔体温度1160℃、下拉速度70mm/min、冷却水量900L/h时,可以连续稳定成形宽25mm、厚5mm且表面光亮、具有连续柱状晶组织的纯铜板材,其抗拉强度为146MPa,屈服强度为33MPa,延伸率为54%,电导率为105。
But for the copper formed of more thin wire, there are all columnar crystal a.
而多股细铜导线火烧和二次短路及过负荷产生的熔珠熔痕,其显微结构中均出现等轴晶和柱状晶及较小再结晶颗粒,与一次短路结构较难以区别,因此无法为火灾原因的鉴定提供依据。
Compact processing of containing CuAlNi alloy pipes with continuous columnar crystals;
连续柱状晶组织CuAlNi合金管材的短流程制备
The results showed that the proper amount of additions of Na2O-MgO can obviously promote the formationβ-Al2O3columnar crystals,raise its aspect ratio,and increase the flexural strength and fracture toughness.
结果表明:在实验的添加剂量范围内,适量的添加剂能促使β苁-Al2O3柱状晶的形成,长径比增大,其强度和断裂韧性增加。
The results show that when nucleation temperature is lower than the temperature of endothermic peak of DTA curve, the columnar crystals grow in unidirectional direction from border to inner of the sample.
结果表明 :核化温度低于差热分析 (DTA)曲线吸热峰温度时 ,样品边界存在明显的从表面向中部定向生长的柱状晶组织 ,而样品中部是方向各异的树枝晶形态。