基于Pro／E的显示器面板流动分析及模具设计

通过实例阐述了显示器面板塑件在Pro／E下的三维建模及模具设计和装配的具体过程，利用Pro／E自带的塑料顾问对显示器面板塑件进行了流动充填及注射成型工艺分析，并结合分析结果提出了处理方法。该实例充分体现了Pro／E软件在模具设计与分析中的优越性。     

基于Pro/E的盒子零件模具设计

以盒子零件为例,介绍了应用Pro/E软件进行产品三维建模和模具设计的流程.同时,详细讨论了在Pro/E的模具模块创建分型面的四种方法,以及模具的开模仿真与装配的具体过程.结果反映了应用Pro/E软件进行模具设计的优越性.     

基于Pro/E减压阀阀座注射模设计

通过分析减压阀阀座的结构和特点,运用Pro/E软件对产品建模,并准确、快速生成模具型芯和型腔。采用Pro/E和EMX进行模架设计及模具零件的设计、装配。实践证明,采用Pro/E大大缩短了设计周期,提高生产效率,保证塑件质量符合设计要求。     

基于Pro/E的-模多模腔压铸模具设计

以剪刀零件为例,介绍了运用Pro/E软件进行产品三维建模设计过程.详细论述了应用Pro/E的Moldesign模块完成-模多腔压铸模具的设计过程和方法,并运用EMX完成了模架的设计.     

灰铸铁铁套消失模模具设计

以铁套铸件为例,详细描述了基于Pro/E的灰铸铁铁套消失模模具设计过程.根据铁套铸件的结构和消失模模具的制造特点,模具设计采用镶拼形式,活块和框体定位与导向采用燕尾槽结构.结果表明,采用Pro/E软件辅助设计,可大大提高模具设计和制造效率.生产实践表明,模具操作方便,出模顺利、易于粘接,尺寸精确,生产效率高.     

应用Pro/E设计模具时收缩率公式的正确选用

阐述了Pro/E模具设计模块中设置收缩率的两个公式的来历,指出正确选用收缩率公式的方法,为合理应用Pro/E设计模具指明了方向。     

Pro/E软件中塑料模具设计模块的分模原理

通过在Pro/E软件塑料模具设计模块下,对一个典型塑件,创建多种分型面实现相同分模结果的例子,阐明了Pro/E软件塑料模具设计模块的分模原理.掌握了该原理,有助于在Pro/E软件塑料模具设计模块中对复杂结构的塑件进行分模时,准确、快速地从10多种分型面创建方法中选用适合的方法,从而提高分模效率.     

基于Pro/E的防尘罩模具设计及注射成型分析

通过实例论述了基于Pro/E的制品三维设计、注射成型工艺分析、模具的分型面创建、模具的体积块抽取、模具的开模仿真以及模具模型装配的具体过程，着重介绍了模具分析过程中的具体操作步骤。     

在模具加工中Pro/E与MasterCAM的结合使用

Pro/E软件及MasterCAM软件是目前数控加工领域中使用广泛的CAD/CAM应用软件,介绍了在模具加工中Pro/E与MasterCAM的结合使用实例。     

Pro/E组件的分模方法与技巧

Pro/E在模具设计方面已经普遍应用,基于多年来对Pro/E软件应用的一些实践和心得,简单介绍Pro/E Wildfire组件的分模方法与技巧.     

Effects of Post-weld Heat Treatment on Microstructure,Mechanical Properties and the Role of Weld Reinforcement in 2219 Aluminum Alloy TIG-Welded Joints

In as-welded state, each region of 2219 aluminum alloy TIG-welded joint shows diff erent microstructure and microhardness due to the diff erent welding heat cycles and the resulting evolution of second phases. After the post-weld heat treatment, both the amount and the size of the eutectic structure or θ phases decreased. Correspondingly, both the Cu content in α-Al matrix and the microhardness increased to a similar level in each region of the joint, and the tensile strength of the entire joint was greatly improved. Post-weld heat treatment played the role of solid solution strengthening and aging strengthening. After the post-weld heat treatment, the weld performance became similar to other regions, but weld reinforcements lost their reinforcing eff ect on the weld and their existence was more of an adverse eff ect. The joint without weld reinforcements after the post-weld heat treatment had the optimal tensile properties, and the specimens randomly crack in the weld zone.     

The First Phase of the SRIF Industrialized Base in ＂West Area＂ Has Been Put into Operation

After nearly two years＇ tense construction, the first phase of industrialized base of Shenyang Research Institute of Foundry （SRIF）, located at the Tiexi Casting and Forging Industrial Park in the west of Tiexi District, has now been completed and formally put into operation.     

Effect of Rare Earth Doping on Impedance,Modulus and Conductivity Properties of Multiferroic Composites:0.5(BiLa_xFe_(1-x)O_3)–0.5(PbTiO_3)

The Lanthanum-doped bismuth ferrite–lead titanate compositions of 0.5(Bi LaxFe1-xO3)–0.5(Pb Ti O3)(x = 0.05,0.10,0.15,0.20)(BLxF1-x-PT) were prepared by mixed oxide method.Structural characterization was performed by X-ray diffraction and shows a tetragonal structure at room temperature.The lattice parameter c/a ratio decreases with increasing of La(x = 0.05–0.20) concentration of the composites.The effect of charge carrier/ion hopping mechanism,conductivity,relaxation process and impedance parameters was studied using an impedance analyzer in a wide frequency range(102–106Hz) at different temperatures.The nature of Nyquist plot confirms the presence of bulk effects only,and non-Debye type of relaxation processes occurs in the composites.The electrical modulus exhibits an important role of the hopping mechanism in the electrical transport process of the materials.The ac conductivity and dc conductivity of the materials were studied,and the activation energy found to be 0.81,0.77,0.76 and 0.74 e V for all compositions of x = 0.05–0.20 at different temperatures(200–300 °C).     

Quantitative Analysis of the Crystallographic Orientation Relationship Between the Martensite and Austenite in Quenching–Partitioning–Tempering Steels

The orientation relationships(ORs)between the martensite and the retained austenite in low-and medium-carbon steels after quenching–partitioning–tempering process were studied in this work.The ORs in the studied steels are identified by selected-area electron diffraction(SAED)as either K–S or N–W ORs.Meanwhile,the ORs were also studied based on numerical fitting of electron backscatter diffraction data method suggested by Miyamoto.The simulated K–S and N–W ORs in the low-index directions generally do not well coincide with the experimental pole figure,which may be attributed to both the orientation spread from the ideal variant orientations and high symmetry of the low-index directions.However,the simulated results coincide well with experimental pole figures in the high-index directions{123}_(bcc).A modified method with simplicity based on Miyamoto’s work was proposed.The results indicate that the ORs determined by modified method are similar to those determined by Miyamoto’method,that is,the OR is near K–S OR for the low-carbon Q–P–T steel,and with the increase of carbon content,the OR is closer to N–W OR in medium-carbon Q–P–T steel.     

The Mirror with Patterns of Auspicious Animals and Grapes——Exquisite cast mirror and the technology of surface tin-enrichment by rubbing-in and infiltration of tin-rich powder

<正>Bronze mirrors were used by the Chinese people before the introduction of the glass mirror.Only after it was replaced by the glass mirror did the bronze mirror gradually retreat from people's lives.Different styles of bronze mirrors were made in different historical periods,particularly in the Warring States Period,the Han and Tang Dynasties,which were the three peaks of the development of bronze mirror arts in ancient China.The casting techniques were exquisite.The surface of the bronze mirror was smooth and bright enough to reflect one's image,and there were scarcely any casting defects on the mirror surface.On the back of the bronze mirror,there were rich depictions of Arts and Humanities,and the ornamentations were also     

The 9th China International Diecasting Congress & Exhibition

The 9th China International Diecasting Congress ＆ Exhibition was held on July 22-24, 2014 at Shanghai New International Expc Centre. This exhibition was the most successful over the years, with over 6890 visitors and 155 exhibitors, and the exhibition area increased by 30% from 9,500 square meters in 2012 to 12340 square meters. Die casting enterprises from a total of 24 countries and regions, including China mainland, Chinese Taiwan and Hong Kong, South Korea, Japan, Germany, India, Thailand, Malaysia, the United States, Russia, Australia, Iran, Ukraine, Brazil, Colombia, Singapore, Austria, Canada, Croatia, France, Turkey, United Kingdom, Vietnam, attended the congress and exhibition.     

Introduction of the Fluid Control Engineering Institute of Kunming University of Science and Technology

正The Fluid Control Engineering Institute of Kunming University of Science and Technology was set up in 1996.The researches of institute concentrate on electro-hydraulic(pneumatic)servo/proportional control and hydromechatronics.The Institute is committed to research and development of electro-hydraulic control of high-end technical equipment in ferrous metallurgy refining produc-     

RARE METALS Volume Contents

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Antimony Induced Crystallization of Amorphous Silicon

Antimony induced crystallization of PVD (physics vapor deposition) amorphous silicon can be observed on sapphire substrates. Very large crystalline regions up to several tens of micrometers can be formed. The Si diffraction patterns of the area of crystallization can be observed with TEM (transmission electron microscopy). Only a few and much smaller crystals of the order of 1μm were formed when the antimony layer was deposited by MBE (molecular beam epitaxy) compared with a layer formed by thermal evaporation. The use of high vacuum is essential in order to observe any Sb induced crystallization at all. In addition it is necessary to take measures to limit the evaporation of the antimony.     

A CUMULATIVE FATIGUE DAMAGE RULE UNDER THE ALTERNATIVE OF CORROSION OR CYCLIC LOADING

Fatigue damage increases with the applied loading cycles in a cumulative manner and the material deteriorates with the corrosion time. A cumulative fatigue damage rule under the alternative of corrosion or cyclic loading was proposed. The specimens of aluminum alloy LY12-CZ soaked in corrosive liquid for different times were tested under the constant amplitude cyclic loading to obtain S-N curves. The test was carried out to verify the proposed cumulative fatigue damage rule under the different combinations among corrosion time, loading level, and the cycle numbers. It was shown that the predicted residual fatigue lives showed a good agreement with the experimental results and the proposed rule was simple and can be easily adopted.