成形的

Basing on analyzing a few pictures, this article tries to backward the history of the spring and the shaping of this motif, to study the intercommunion between patterns, to discuss the relationship between the symbolization and the formation, and between the symbolization and the headspring, to expatiate its importance in the aesthetic way, and to draw the conclusions 1, consistent in forms, acanthus scroll origins from the lotus ornament.

本文试图围绕莨苕叶饰漩涡纹样这一重要的装饰母题，依据图例，追溯这一纹样的起源和成形，考察成形中图案在时间和空间上形成交流的原因和意义，讨论象征意义和起源之间的关系以及象征意义与形式之间的关系，以及阐述这一纹样的成形与演变在审美上的意义，来展开对图案的本体问题的讨论。

During the semi-solid die casting processing, appropriate semi-solid casting parameters and the sizes of ingate area were researched ,also, the microstructures and mechanical properties of the component in semi-solid die casting processing were investigated .And effects of casting parameters on the performances of the component in semi-solid die casting processing and heat treatment on microstructures and mechanical properties of components made of A1 alloy were observed. A reasonable processing for an eligible semi-solid component in practice was basically obtained.

在压铸零件的过程中，找寻合适的压铸工艺参数，以及模具内浇口设计，对成形铸件进行了组织观察、性能测定与分析；研究了压铸工艺参数对半固态成形零件成形性能的影响以及热处理对铝合金零件组织和力学性能的影响；基本上获得了在实际生产条件下压铸出合格的半固态零件的合理的工艺路线。

Starting from the structure characteristics of the large integral panels,the structure forms and classification of the integral panels are introduced,and the oversea research situation and the developing tendency of the shot peen forming and the creep age forming technolog.

从大型整体壁板的结构特点出发，介绍了整体壁板的结构形式和分类，重点阐述了整体带筋壁板喷丸成形技术和时效成形技术的国外研究应用进展及发展趋势，分析了国内现有整体壁板成形技术的基础和存在问题，特别介绍了国内在ARJ21新支线飞机研制中所取得的最新进展。

Finally, simulation software was developed with Visual C++ and Delphi for 2D molding analysis of MIM, which affords facilities for the quality forecast of 2D thin wall parts and optimal design of mold and process parameters. In the research of molding performance of MIM feedstock, for the shortcoming of capillary rheometry, it was propounded that using spiral mold test molding performance of feedstock, and a set of spiral mold was creatively designed with quickly exchange gates and closed mold cavity. With the spiral mold, an orthogonal experiment was made on getting regress equation of flow length L〓 of the heavy alloy feedstock. Then the rule of L〓 varying with Q〓, P〓, and ΔT〓 was discovered. Q〓 ranks first in the influence on process parameters of molding performance, P〓 and Δ T〓 second. Therefore the injection rate Q〓 should be controlled primarily to improve the flow performance of feedstock.

在MIM喂料注射成形性能研究方面，针对毛细管流变仪测试法衡量流动性能的不足，提出使用螺旋线模具测试喂料熔体的注射成形性能，创造性地设计了一套可快换浇口，模腔封闭的螺旋测试模，并在螺旋测试模上采用正交实验设计，得出了高密度重合金喂料流动长度L〓的回归公式，揭示了L〓随Q〓、P〓、△T〓和S〓的变化规律，并得出工艺参数对成形性能影响的强度顺序为Q〓最大，P〓与△T〓其次，因而改善喂料流动性能应优先控制注射速率Q〓。

By analyzing the forging process of double frustums sucker rod and using rigid visco-plastic material model and 3-D coupled FE simulation, the whole forging procedure are analyzed and simulated with finite element analysis software DEFORM. The results indicate the inner stress field, strain field, metal flowing law and forging travel-load curve during the forming procedure. The forming statuses, causation of defect of workpiece are predicted and so on.

通过对抽油杆镦锻工艺的分析，并采用刚粘塑性材料模型与有限元耦合的方法，运用有限元分析软件DEFORM-3D对双圆台抽油杆的成形过程进行了模拟，获得了成形过程中的内部应力、应变、金属流动规律及行程――载荷曲线，预测分析了工件成形状况、可能产生的主要缺陷的形式、部位和原因。

The results show that cutting tools and cutting parameters had an important influence on the quality of the fiber in the planing process of metal fiber. The larger rake angle and appropriate clearance angle of tools favored to fabricate metal fiber. Back engagement influenced the forming process of metal fibers most greatly, feed rate and cutting speed varied little.

研究结果表明：在金属纤维刨削成形过程中，刀具参数和切削用量对纤维的质量有重要影响，较大的刀具前角和合适的刀具后角有利于纤维的成形，而背吃刀量对金属纤维的成形影响最大，切削速度和进给量的影响则不明显。

As a result, the intellectualization of sheet metal forming process is the higher level of new technologies such as press forming automation and flexible process system, by which not only can the feature of manufacturing technique be changed, but also the transformation of press equipment can be forwarded.

所以板材成形智能化过程是冲压成形过程自动化及柔性加工系统等新技术的更高级阶段，不但可以改变冲压生产工艺的面貌，而且还将促进冲压设备的变革，同时也会引起板材成形理论的进步与分析精度的提高，在降低板材级别，消除模具与设备调整的技术难度，缩短调模试模时间，提高成品率和生产率等方面都具有十分明显的意义。

Besides the contents mentioned above, the research includes the following contents: 1. Convex refractive microlens array are successfully fabricated by the method composed of heat-forming photoresist and Ar ion beam milling, on various substrate, such as Si, SiO〓 et al.. And a variety of critical experimental fabrication parameters are obtained.

讨论了热熔成形工艺中的临界效应，并提出了新颖、自洽的物理诠释，引进了临界成形系数和临界接触角的概念，并推导出它们之间简洁的函数关系式，此关系式揭示了热熔前后微图形特征参数间的内在联系，为定量研究热熔成形过程提供了新的思路。

In the research of visual simulation software development, in order to build the software system model and flow analysis algorithm based on Cross-WLF viscosity model, and realize functions such as pre-processor, solver, parameter regress, data management, graph operations, some advanced software methods as OOSE (Object Oriented Software Engineering) and UML were applied to set up user model, static model and dynamic model of MIM simulation software. These models describe system function, event flow, structure and relation of classes, object interaction, structure of database and I/O file format.

在MIM喂料注射成形性能研究方面，针对毛细管流变仪测试法衡量流动性能的不足，提出使用螺旋线模具测试喂料熔体的注射成形性能，创造性地设计了一套可快换浇口，模腔封闭的螺旋测试模，并在螺旋测试模上采用正交实验设计，得出了高密度重合金喂料流动长度L_m的回归公式，揭示了L_m随Q_m、P_m、△T_m和凡的变化规律，并得出工艺参数对成形性能影响的强度顺序为Qm最大，尸m与△几其次，因而改善喂料流动性能应优先控制注射速率Qm。

The influence of thedifferent parameters, such as blank-holder condition, thickness of blank sheetand material pattern on the wrinkle and the crack is analyzed. FLD is used tojudge the crack on the multi-point forming process successfully. The predictionof crack accords with the experiment ones, which shows choosing the properparameters can eliminate or restrain the defects, and also benefits the MPFtechnique and the shaping analysis.

本文对使用弹性介质和无弹性介质的多点成形过程进行了对比，指出使用弹性介质时在满足成形精度的前提下可以明显改善工件的成形质量，并通过对不同厚度和弹性模量的弹性介质对压痕的抑制作用进行了对比分析，探讨了最佳的弹性介质参数。

The good news is that after formatting from the command line to FAT32 (format /fs:fat32 /a:4096 drive:) all but one of the problematic games that I tested work perfectly.

好消息是，从指挥线后格式化了FAT32(格式/曾荫权：了FAT32/答：4096年径：)所有问题，但其中的游戏测试工作，我很好。

In Amsterdam. He is a Dutch painter, draftsman, and etcher of the 17th century, the greatest artist of the Dutch school, a master of light and shadow whose paintings, drawings, and etchings made him a giant in the history of art.

伦勃朗是一位17世纪画家、绘图家、版画家，荷兰学派的最伟大艺术家，他的明暗法的大师，他的绘画、素描和版画使他成为一位艺术史上的巨匠，其画作体裁广泛，擅长肖像画、风景画、风俗画、宗教画、历史画等。