在 AUTO CAD 中实现零件轮廓数控自动编程

介绍了在ＡＵＴＯＣＡＤ系统中用ＡＵＴＯＬＩＳＰ语言对图形实现数控铣自动编程的方法，实现图形交互式数控机床自动编程。     

AUTO CAD在建筑力学计算中的应用研究

对AUTO CAD在建筑力学中几个参数的求解进行了总结,并以悬挑脚手架的力学计算为例,采用AUTO CAD精确计算了其多项参数,证实了此方法在建筑力学计算中的简单实用效果,解决了力学分析计算繁琐的问题。     

用AUTO LISP语言实现鄂式破碎机参数化绘图

对１１型微机高压线路保护的关键技术之一－电压－频率变换技术（简称ＶＦＣ）进行了分析和讨论，并对该型模数变换器的特性进行了旭纳和总结。     

AUTO CAD在确定盒形件毛坯尺寸时的应用

讨论了用 AUTO CAD实现滑移线方法确定盒形件毛坯尺寸的详细过程 ,所得结果正确、可靠。该方法使用简单 ,通用性强 ,对于制定各种形状的盒形件的毛坯尺寸具有很重要的实用价值。     

汽车玻璃高端产品及高新技术动态

介绍了目前国际汽车玻璃领域的4种高新技术,分析了国内外汽车玻璃高端产品的现状。同时,介绍了这4种产品的加工工艺,着重介绍了我国已经成功研制的半钢化夹层车门玻璃的生产工艺及技术。     

运用AUTO CAD求解桁架内力

一个平面汇交力系的平衡条件是其力多边形必须闭呈,依其条件,利用图解法和计算机中的ＡＵＴＯ ＣＡＤ绘图工具,迅速准确地求解一个结点上的两个未知力,并以礤类推求解桁架各杆内力,特别在复杂的桁架内力计算中更显示其法优越性。     

二维三角形单元有限元自动剖分的一种新方法

针对有限元数据处理的缺点,提出一种新的有限元自动剖分方法,即借助于Auto CAD软件进行有限元自动剖分。与通常的自动剖分方法相比,具有优越性和普遍适用性。     

FOR XML子句在SQL Server中的用法比较

介绍了SQL Server中FOR XML子句的AUTO方式、RAW方式、EXPLICIT方式和PATH方式的用法,并对每种方式的使用都进行了实例分析。     

AUTO CAD入门捷径

针对AUTOCAD的初学者 ,面对庞大的应用软件不知从何入手的实际 ,通过例子阐述了快捷入门的方法 ,可在工程设计中起到事半功倍的效果     

Evaluation of internal and subsurface quality of continuously cast billets and slabs by ultrasonic techniques

Abstract

The paper highlights the developments made in ultrasonic techniques at R&D and SS Division of Tata Steel Ltd in detecting, measuring and analysing the continuously cast billets/slabs with respect to its internal as well as subsurface quality. Different continuously cast billets and slabs could be ranked according to their cleanliness levels even with the conventional ultrasonic flaw detector. The effectiveness of ladle furnace treatment and vacuum degassing (RH degassing) in improving cleanliness level in slabs of extra deep drawing grade and that of electromagnetic stirring in low and high carbon billets, could be successfully assessed using these techniques. In order to convert the down graded first and last slabs of a sequence of auto grade interstial free into the prime grade slabs, the scarfing depth and cutting length were optimised based on the ultrasonic results. Some results using a computer controlled ultrasonic multiscan imaging system, on continuously cast steel billets, have also been presented.