To calculate numerically the radiation of a enclosure within a heteromorphosis cavity, attention was focused on: how to decide the visibility between two surfaces, how to improve the old method of configuration factor computation, how to approximately and efficiently decide the radiation resource of directional, spectral radiation in cavity.
讨论了解决异型封闭腔辐射几何学问题的几种方法 :异型封闭腔内 ,表面间可见性的判断方法 ;优化异型封闭腔角系数计算的方法 ;确定异型封闭腔内定向辐射的壁面辐射源的方法 。
Tooling design method is very important to form the shaped tube.
异型钢管成型的轧辊设计是生产中的关键技术,采用计算机辅助设计技术,实现了高精度、复杂轮廓轧辊的优化设计,缩短了轧辊设计周期,降低了制造调试成本,使得异型管的成型设计不再是主要依赖设计者的经验以及依靠调试修正的试错法。
Effect of Oscillation Field on Polymer Melt Flow in Extrusion Die of Profile;
振动场对聚合物熔体在异型材挤出口模内的流动影响
Design of Extrusion Die for PA66 Heat Insulating Profile for Window;
PA66窗用隔热异型材挤出模具设计
Numerical Simulation of the Melt Flow Characteristics in Coextrusion Runner of the Steel/Plastic Composite Profile;
钢塑复合异型材共挤流道内熔体流动特性的数值模拟
Main Quality Defects And Controlling Methods for CC Beam Blank;
异型坯主要质量缺陷及控制措施
Numerical simulation of thermal processing in continuously cast beam blank;
连铸异型坯凝固过程的数值模拟
Effects of Mould Flux on Surface Quality of Continuous Casting Beam Blank;
保护渣对连铸异型坯表面质量的影响
The application of infrared spectrograph to the production of PVC profiles;
红外光谱仪在PVC异型材生产中的应用
Two problems concerning the plastification quality of PVC profiles;
与PVC异型材塑化质量相关的两个问题
The article has described toughening mechanism of nanometer CaCO3, Application of nanometer CaCO3 in PVC profiles and compared with conventional particle CaCO3 in PVC profiles.
介绍了纳米CaCO3粒子的增韧增强机理,将纳米CaCO3应用在PVC异型材中,并与一般粒径CaCO3填充的PVC异型材进行了比较。
The stress characteristic of the main working methods for processing the special-shaped wire,such as drawing,driven roller die and rolling was analyzed.
针对异型材的几种常用加工方法,如拉伸、辊拉、轧制等,分析它们在加工中的应力特点。
It is very conspicuous that the effect of drawing plastic deformation metal wire with roller die is better,but some broken wires often appear when it is used for drawing wire,especially special-shaped wire of low plastic deformation metal.
辊拉模在拉拔塑性较好的金属线材时效果十分明显,但在拉拔塑性较差的金属线材特别是异型材时,常发生拉断现象,影响加工的连续进行。
In this paper,the level continuous casting technologies of leaded nickel silver , the working ways from round casting stick to special-shaped wire and its crystal structure and mechanical performance were studied.
论文综述了铅锌白铜材料的发展和加工工艺，重点评述了水平连铸工艺，对高镍铅锌白铜加工精密异型材工艺和材料的组织、性能进行了研究。