模具制造中曲面与型体的形成和加工

阐述了在模具制造中 ,如何应用CAD/CAM系统来形成曲面和模型 ,并自动生成刀具轨迹 ,提高模具制造质量和效率     

Modeling of Ce（IV） transport through a dispersion flat combined liquid membrane with carrier P507

A mathematical model for the transport of Ce （IV） from hydrochloric acid solutions through dispersion flat combined liquid membrane （DFCLM） with contain 2- ethyl hexyl phosphonic acid-mono-2-ethyl hexyl ester （P507） as the carrier, dissolved in kerosene as the membrane solution have been studied. This process of facilitated transport, based on membrane technology, is a variation on the conventional technique of solvent extraction and may be described mathematically using Fick＇s second law. The equations for transport velocity are derived considering the diffusion of P507 and its metallic complexes through the liquid membrane. In this work, the system is considered to be in a transient state, and chemical reaction between Ce（IV） and the carrier to take place only at the solvent-aqueous interfaces. Model concentration profiles are obtained for the Ce（IV）, from which extraction velocities are predicted. The experimental and simulated Ce（IV） extractions showed similar tendencies for a high Ce （IV） concentration and acidity case.The model results indicate that high initial Ce（IV） concentrations and acidity both have detrimental effects on Ce（IV） extraction and stripping. The diffusion coefficient of Ce（IV） in the membrane and the thickness of diffusion layer between feed phase and membrane phase are obtained and the values are 6.31 × 10-8m2·s-1 and 31.2 μm, respectively. The results are in good agreement with experimental results.     

基于Solidworks2001的锻件毛坯三维实体的自动生成

利用三维实体造型软件的参数化设计思想 ,在Solidworks2 0 0 1环境中 ,通过对零件实体图的尺寸、结构、加工要求等信息的读取 ,经过二次开发程序的分析后 ,自动形成锻件的毛坯三维实体图 ,为在三维环境下的冷加工工装设计提供重要的依据 ,并能快捷地转换成锻件毛坯图     

多功能体验式消防宣传车落户厦门

可爱的卡通造型,百变的车载设施,丰富的体验功能,一辆不大的消防车,就像一个流动的迷你消防科技馆。厦门市湖里区斥资近90万元购入多功能、体验式消防宣传车。 这辆消防宣传车有着完整的集声光电于一体的5大消防安全演示功能,有语音识别模拟报警体验系统、模拟烟雾传播系统、模拟自动报警喷淋系统等。消防＂大篷车＂的体验式逃生帐篷,还可以让人体验高仿真的＂生死穿越＂。     

科达(KED ACOM)

正■造型优雅工艺精湛IPC421高清高速球表里如一产品名称:IPC421系列高清高速球型网络摄像机产品型号:IPC421公司全称:苏州科达科技股份有限公司公司网址:www.kedacom.com公司电话:0512-68418188传真:0512-68412699邮编:215011公司地址:江苏省苏州市新区金山路131号