无荧光防塌降失水剂KH－931的合成与性能

ＫＨ－９３１是以褐煤、丙烯酰胺、丙烯腈为原料制得的无荧光防塌降失水剂。本文简介了ＫＨ－９３１的合成条件，并对ＫＨ－９３１的防塌作用与降滤失作用进行了室内评定。实验结果表明，ＫＨ－９３１的防塌、降失水效果良好，并具有加量少、无荧光的特点。腐殖酸衍生物，降滤失剂，页岩抑制剂，多功能钻井液处理剂，荧光性，实验室研究     

亚波长设计中的可制造性验证方法

描述了一种采用分辨率提高技术后用于可制造性设计的验证方法.该方法的目的是验证设计功能与设计目的是否一致,更精确地说,使刻印出来的图像与设计一致.还描述了这种基于模型的验证方法的过程建模,实例说明这种方法的性能.     

超声珩磨在发动机缸套光整加工中的应用研究

本文介绍了发动机缸套的新型加工工艺-功率超声珩磨的原理。特点，装置组成。关键技术，工艺效果以及其应用前景。     

统计过程控制在制管质量控制中的应用

简要介绍了统计过程控制(简称SPC)的概念,分析了在制管质量控制中应用SPC的必要性.以埋弧焊接工序关键质量特性--焊缝内在质量的控制为例,阐述了螺旋埋弧焊管质量控制实施SPC的一般步骤和方法.借鉴国内部分企业实施SPC的成功经验,提出了制管企业质量管理中应用SPC应注意的问题.     

多量程数据采集记录装置的设计

通常的数据采集与记录装置不易实现多量程测量。通过对标度方程进行分析得知,要改变量程只须改变两个参数——标度因子和量程下限。我们设计了一个使用单片机的多量程数据采集和记录装置,能处理多达256种量程。本文叙述了算法分析、硬件和软件的设计以及该装置的性能指标。     

论制造企业的信息安全建设

阐述企业信息安全隐患及主要安全技术的阐述,结合本人工作的企业做案例分析。     

Signature analysis and defect detection in layered manufacturing of ceramic sensors and actuators

This paper presents the concept of a process signature for the use of online signature analysis and defect detection in the layered manufacturing (LM) of ceramic sensors and actuators. To achieve the high quality of parts built by the fused deposition of ceramics (FDC), an online process-monitoring system is implemented to detect the processing defects. Using a process signature extracted from the image of a layer captured by the monitoring system, an ideal image is created that is then compared to the original image to detect and identify the defects. Some results of signature analysis and defect detection for single-material and multi-material parts are also presented.Received: 22 July 1999, Accepted: 21 October 2001, Published online: 29 October 2003 Correspondence to: Mohsen A. JafariThis work was supported by the Office of Naval Research under grant # N-0014-96-1-1175. Ref. US Patent # S-5738817, April 14, 1998.     

新型高温永磁体的研制

通过分析影响磁体高温性能的因素,设计了新磁体的成分为:Cu含量高,Fe含量低,Zr适量,Sm含量高;采用粉末冶金工艺制备了高温Sm_2(CoFeCuZr)_(17)永磁体。制得的磁体室温磁性能为:B_r1.075 T,H_(ei)2 098.2 kA/m,H_(eb) 776.1 kA/m,H_k843.8 kA/m,(BH)_(max)210.0 kj/m~3;在200℃时的磁性能为:B_r0.991 T,H_(ci)1 175.7 kA/m,H_(cb)531.7 kA/m,H_k577.9 kA/m,(BH)_(max)172.5 kJ/m~3;矫顽力温度系数β(20～200℃)为-0.24％/℃。经理论分析和实验验证,磁体的使用温度均超过400℃,为高温环境(高于400℃)提供了一种实用性永磁材料。     

A Study of the Compatibility Between Asphalt and SBS

In this article, the compatibilities between different components of a base asphalt and styrene butadiene styrene (SBS) have been analyzed from microscopic structures. Specifically, the asphalt was separated into three components: saturates, aromatics, and resins, by Solvent Recycled Absorption Chromatography Separation Technology (SRACST). The compatibilities between these different components and the polymer were compared with the help of Fluorescence Microscope (FM) with which the existing state of the polymer SBS in these different components could be examined obviously. The modified effects indicated that aromatics could cause SBS swollen and, resins dissolved SBS better than saturates, though both the two components could partially dissolve SBS and the two mixtures presented two immiscible phase systems. In order to further investigate the compatibility between aromatics and SBS, from macroscopic properties, an additive rich in aromatics was added to the SBS/asphalt mixture, and the result was satisfactory.