工艺过程

The model was used to simulate the angular velocity distribution of the liquid Al Si alloy under different magnetic intensity .

在对电磁离心工艺深入分析的基础上，建立了该工艺过程中液态金属角速度分布数学模型·并模拟了不同磁场强度下，液态金属角速度分布·结果表明：为避免铸件产生缩松，在电磁离心铸造过程中，必须有合适的磁场强

When used in LAB complex unit with multi-step hydrogenation process,DSH-1 selective hydrogenation catalyst,which contain noble metal Pd,can transmit diolefin s to olefins effectively,and has good activation and selectivity.

DSH -1型含贵金属Pd双烯选择性加氢催化剂与多段加氢工艺结合，应用于脱氢法生产直链烷基苯的联合装置中，能有效地将脱氢过程产生的双烯烃转化成单烯烃，具有很好的反应活性和选择性，且操作弹性大，工艺过程简单。

The production of globoid indexing cam and gas engine burningchamber are employed as refrences to analyze the method to mathematical modeling of complexed functional feature, furthermore, the research work of the character of surface feature production is deeply done .Advancing and optimizing the producting process, as well as the whole simulated machining by making UG NX2. 0 as the supporting system. Building the Fixture Library CAD/CAM Document system and producting template of DMU70V. Exploring the structure and flow chart of the Document System;Developing the MDF File by means of GPM module. All the above provide profound preparation to establish a further integrated manufacturing environment around 5-Axis NC production center.

在本文中，综合论述了特征建模的方法，以弧面分度凸轮和内燃机燃烧室作为实例，重点研究了复杂功能曲面的建模及曲面分析方法；并从五坐标加工角度出发，详细研究了曲面零件的加工特性，提出并优化了具体的工艺过程；利用UnigraohicsNX2.0作为开发工具，对建模和加工过程进行了全程仿真；围绕DMU70V建立了专属夹具库、文件体系及工艺模板；综合规划了五坐标数控加工的CAD/CAM文件体系的结构和运作流程；开发了GPM五坐标后处理DMF文件，为建立以五坐标数控加工中心为主的加工体系打下了良好的基础。

By combination of the finite differential technique with the upper bound elemental technique, simulation for the technology of extrusion directly following liquid infiltration which involves infiltration, solidification, and large plastic deformation in one process has been realized and the essences of various technical processes have been revealed by their corresponding simulation results showing the variation of the infiltrated depth and the temperature field with time during infiltration, the punch position, the solidification development of the matrix alloy, the state of the composite within the deforming zone, and the forming load required at different times during extrusion.

采用有限差分法和上限元法相结合，对融浸渗、凝固和大塑性变形为一体的液态浸渗后直接挤压工艺过程进行了数值模拟，从浸渗时浸渗深度与坯料温度场随时间的变化以及挤压过程不同时刻的冲头压下位置、坯料凝固情况、变形区坯料状态、成形载荷大小等方面揭示了不同工艺条件下的各种挤压过程的实质。

Because it is very short for the idea of wasteless mining to be put forward, there are no relative systemic theories and methods published both at home and abroad.

因此必须对采矿工艺过程进行合理地控制和优化，其中，重点是对资源利用、采矿工艺方案和采矿工艺过程的优化。

In this design introduced the transmission covers the punch holes the ramming craft analysis, the craft plan formulation, arranges the specimen map design, the always ramming strength computation and the center of pressure computation, the cutting edge size computation, the spring, the rubber computation and selects, the raised mold, the concave mold or the convex-concave mold structural design and all that die the components structural design, draws up the mold assembly drawing and the work detail drawing, the compilation design instruction booklet, fills in the ramming craft card and the work components machine-finishing technological process card, raised pays attention to, the concave mold coordinate processing.

本设计中介绍了传动盖冲孔的冲压工艺分析，工艺方案的分析和制定，排样图的设计，总的冲压力计算及压力中心的计算，刃口尺寸的计算，弹簧的计算和选用，凸模、凹模或凸凹模结构设计以及其他冲模零件的结构设计，绘制模具装配图和工作零件图，编写设计说明书，填写冲压工艺卡和工作零件机械加工工艺过程卡，注意凸、凹模的配合加工。

In this design introduced the transmission covers the punch holes the ramming craft analysis, the craft plan formulation, arranges the specimen map design, the always ramming strength computation and the center of pressure computation, the cutting edge size computation, the spring, the rubber computation and selects, the raised mold, the concave mold or the convex-concave mold structural design and all that die the components structural design, draws up the mold assembly drawing and the work detail drawing, the compilation design instruction booklet, fills in the ramming craft card and the work components machine-finishing technological process card, raised pays attention to, the concave mold coordinate processing.

摘要本设计中介绍了传动盖冲孔的冲压工艺分析，工艺方案的分析和制定，排样图的设计，总的冲压力计算及压力中心的计算，刃口尺寸的计算，弹簧的计算和选用，凸模、凹模或凸凹模结构设计以及其他冲模零件的结构设计，绘制模具装配图和工作零件图，编写设计说明书，填写冲压工艺卡和工作零件机械加工工艺过程卡，注意凸、凹模的配合加工。

Different from many other researches the Henkel-Esterification process was studied here which starts from 1,8-naphthalenedicarboanhydride. In the Henkel reaction of 1,8-naphthalenedicarboanhydride to 2,6-naphthalenedicarboxylic acid (abbreviated as 2,6-NDA) non-cadmium catalytic system was used. In atmosphere of carbon dioxide 1,8-naphthalenedicarboanhydride can be effectively converted to 2,6-NDA in the temperature range of 300~340℃ with zinc carbonate as catalyst and the yield of 2,6-NDA can reach more over 62%.

和国内外绝大多数研究不同的是，论文结合公司自身的原料资源优势和长远规划，提出了从工业苊深加工产品—1，8-萘二甲酸酐出发，经过非镉系催化剂催化转位，然后再进行非酸催化酯化合成2，6-萘二甲酸二甲酯的工艺路线，并对工艺过程中涉及的成盐过程、催化转位反应、酯化反应等进行工艺参数的重点考察，对合成产物进行分析确证。

In order to solve the difficulties in producing and welding tiny bridge-belt ,twn methods- producing by electrochemical etching and laser welding with powder cladding were put forward.

针对微型桥带的成型与焊接工艺难题，提出了采用电化学刻蚀成型和利用粉末熔覆工艺进行激光焊接的工艺方法，并给出了具体的工艺过程，成功地实现了低成本、高质量、成批量的工业生产要求。

Firstly, The simulation of Craftwork Process of Fully Mechanized Coalface is studied in the thesis and then analyses Craftwork Process of Fully Mechanized Coalface by using the Object-Oriented method.

本论文首先采用虚拟现实技术对综采工作面工艺过程进行仿真研究，然后利用面向对象的方法分析综采工作面的工艺过程；使用MultiGen Vega 和Vc 等软件，采用软件工程的方法开发仿真系统；解决了利用MultiGen、Vega 和Vc 进行建模和仿真驱动过程中的一系列关键技术问题，如碰撞检测，数据库技术，中文显示，运动模型，场景优化等。最后构建综采工作面虚拟现实系统，在主要场景实现中对所提出的关键技术做了实际的应用，从而验证了关键技术的有效性。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。