Pro／E软件在精密注射模具设计中的应用

利用三维软件进行设计代表了模具设计的发展方向,它有利于对模具进行实体造型、成型过程模拟以及模具缺陷检测分析的研究。在分析研究ProE进行精密注射模设计的基础上,介绍了应用Pro/Engineer2001进行模具设计的基本流程,应用软件中的一些功能对所设计的模具进行了检测分析,并通过一个具体的实例演示了该过程。     

Pro／ENGINEER软件在注射模具设计及制造中的应用

以挂机面板注射模具设计及制造为例，结合多年的注射模具开发经验，精辟地介绍了Pro／ENGINEER软件中的零件模块，模具模块，装配模块、P1asticAdvisor塑料模设计顾问、高级加工模块在注射模具设计及制造过程中的使用方法和程序，希望对模具设计人员有一定的帮助和借鉴作用。     

Pro/E软件在眼镜注塑模中的应用

以眼镜塑料件为例，介绍了该制件的逆向工程、三维造型、模具成型零件设计及其数控加工等过程，并对各过程进行了简要的分析，实现了Pro／E软件在复杂型面模具设计与制造中的应用。     

基于Pro/E双分型面模具的3D总装配设计

详细介绍了利用Pro／E软件在双分型面模具设计应用中的一般流程，并结合具体实例说明了模具设计及3D总装配设计的具体步骤。采用这种方法，不但可进行造型设计和快速精确地生成模具的型腔和型芯，还可实现模具的3D总装配设计，有利于缩短模具的设计周期；并可利用Pro／E提供的开模仿真功能，及时发现模具设计中的错误，有效避免了工人的反复劳动。     

基于Pro／E的电池盒盖注塑模CAD／CAE

介绍了基于Pro／E的电池盒盖的注塑模CAD／CAE方法。通过对塑件结构和特点的分析。确定了注塑模具的总体设计方案。着重介绍了注塑模浇注系统和侧抽分型机构的设计。利用Pro／E实现了该模具的3D设计,并进行了塑料流动分析。该模具的设计方法对同类产品的模具设计具有一定的借鉴作用。     

CAD/CAE/CAM技术在模具设计制造中的应用

三维建模已经越来越广泛地应用于注塑模具设计。本文在Pro／ENGINEER软件应用实践的基础上，以手机模型为例，系统全面地从三维造型、模具设计、成型仿真和刀具路径等方面对注塑模具CAD／CAE／CAM技术进行归纳和阐述。着重探讨了关键过程的方法和措施。Pro／E软件在建模方面的实用性界面和功能在该项设计中重点介绍。     

基于Pro／E的弯管注塑模具设计

工业的突飞猛进。带来了塑胶工业的欣欣向荣。也促进了塑胶模具工业的蒸蒸日上。利用Pro／E模具设计模块对弯管进行注塑模具的设计,不但使模具设计的周期缩短,也节约了成本。且从设计到制造的过程中保持了数据的正确性,从而提高了产品的质量。     

基于Pro／ENGINEER软件的积水盘注射模具设计

本文以壁挂空调器积水盘注射模具设计为例，详细地介绍了Pro／ENGINEER软件中的零件模块、模具模块、装配模块等在复杂注射模具设计过程中的使用方法和程序，充分展现了定模侧两复杂斜导柱滑块组件的结构设计要点，希望能对复杂注射模具设计有一定的指导意义。     

旁承架热压成形及模具设计

旁承座的成形是厚板拉延成形，模具设计和模具制造采用Pro／E，从而保证模具成型曲面的设计和制造精度，模具二次成形，保证了产品的质量。     

Pro/E技术讲座(三) Pro/E模具设计基础

本文主要介绍了模具的基本概念、工作方式、模具的主要构件，并重点阐述了使用Pro／ENGINEER进行模具设计的基本步骤。     

乙烯酮(双乙烯酮)下游产品废水的治理技术

乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。     

几种乙炔加压设备性能的比较

阐述并比较了几种加压设备在乙炔加压清净过程中的性能和特点。     

三种煤样燃烧热的测定

本文通过三个厂家提供的三种煤样燃烧热的测定,由测定结果综合得出3号煤样燃烧最完全、燃烧热也最大,是三个煤样中最好的一种。     

Semi-empirical equation of state of metals. Equation of state of aluminum

A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO₂) of density 0.08 g/cm³. __________ Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008.     

水泥水化热测定方法综述

水泥水化热是中、低热水泥和核电工程用水泥的一项关键的技术指标。全球范围内测定水泥水化热的方法有溶解法、直接法/半绝热法、等温传导量热法三种。本文总结了中、美、欧相关方法标准,对其测试原理、仪器设备、试验过程等方面进行了比对,并对其在领域的应用做了简单的概括。     

Calorimetric and Computational Study of Enthalpy of Formation of Diperoxide of Cyclohexanone

A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out.     

我国聚碳酸酯工业发展概况

介绍我国聚碳酸酯生产能力和消费需求,对聚碳酸酯在信息工业中的应用作了简短介绍     

小议汽车涂装工艺设计对涂装成本的影响

论述了涂装工艺设计对涂装设备投资、涂装生产成本的影响。     

Effect of degree of deacetylation of chitosan on the kinetics of ultrasonic degradation of chitosan

The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003     

Measurement of the gradient of viscosity with composition of mixtures of non-ideal gases

A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%.