地基平板载荷试验中存在问题及探讨

根据目前地基平板载荷试验中存在的一些问题．提出一些建议供工程检测人员及规范制定单位参考．     

高炉法钙镁磷肥适当提高鼓风氧含量的试验

为促使高炉法钙镁磷肥企业在提高产量、降低消耗的基础上提高企业经济效益,云南沾益磷肥厂在2#高炉上用纯氧提高鼓风空气中氧含量1%～2%进行工业性生产试验。试验证实了适当提高氧含量鼓风是安全可靠的,提高氧含量鼓风尽管技术很成熟,但由于氧含量提高过少,影响钙镁磷肥高炉技经指标因素较多,试验未取得理想效果。应进一步制定提高鼓风中氧含量在10%～30%的试验方案,继续试验,开发这一工业应用技术。     

外装门锁钥匙插拔卡滞问题检测与分析

针对新安装门锁钥匙插拔卡滞而打开困难的问题,在SG17-03型钥匙拔出力测试仪上进行了钥匙拔出力测试.介绍了门锁检测过程,分析了门锁钥匙插拔卡滞原因,通过解体检验及拔出力测试提出了解决办法.     

国家潮流能试验场选址决策指标体系与分析方法

国家潮流能试验场是潮流能开发利用技术领域的海上公共试验与服务平台。目前国内尚没有海上试验场的建设经验,系统的选址决策标准仍处于空白阶段。本文在对与试验场建设相关的影响因素进行分析与归纳总结的基础上,提出了国家潮流能试验场选址决策的指标体系和分析方法。通过选址方法的研究,对丰富完善国家海洋能试验场标准体系、加快推进国家海洋能试验场建设具有重要意义。     

丁腈橡胶在燃气介质中的老化性能测试研究

基于烘箱热空气老化试验方法,建立了一种能让试验样品处于流通气氛冲刷的闭合试验装置,对橡胶材料进行燃气环境中老化性能测试。选用丁腈橡胶为试样,测试其在不同温度、不同气氛下的老化性能,预测其使用时间。测试结果显示,采用空气气氛方法进行丁腈橡胶加速老化试验,预测的使用时间结果与实际使用时间的偏差在80%以上;燃气气氛冲刷环境下,丁腈橡胶在老化速率是热空气老化的2倍左右,且燃气气氛下的加速老化使用时间的预测结果与实际的偏差在±20%之内。     

Novel transparent and flexible nanocomposite film prepared from chrysotile nanofibres

In the present study, chrysotile nanofibres, obtained from physicochemical dispersion of natural chrysotile, were used to prepare nanofibre sheets by vacuum filtration. As-prepared sheets were then impregnated by UV-curable resin and cured by ultraviolet light to fabricate the flexible and transparent nanocomposite films. Observed from SEM, the transparent films showed a smooth surface and a typical sandwich structure in cross section, viz. nanofibre sheet filled with resin was sandwiched by two layers of resin. XRD patterns indicated the amorphous nature of cured resin and characteristic crystallographic structure of chrysotile in nanocomposite films. Though the nanofibre sheets were white in colour, and nanofibre contents in nanocomposites were as much as 43.4 wt%, the nanocomposite films displayed an excellent optical transparency with about 85% light transmittance in the visible light range. Tensile tests showed that the addition of nanofibres resulted in a great improvement in mechanical strength of the nanocomposite films; with the increase of nanofibre contents, the modulus and tensile strength of nanocomposite films increased gradually.     

A test object with a line width less than 10 nm for scanning electron microscopy

Data are given on the test object for scanning electron microscopy in which the components (ridges) are of trapezoidal profile and have large angles of inclination for the side walls. The width of the top surface of a projection is less than 10 nm. Methods have been developed for measuring such dimensions of test objects on standard scanning electron microscopes. __________ Translated from Izmeritel'naya Tekhnika, No. 8, pp. 20–23, August, 2008.     

采煤机大功率截割部加载试验的方法

介绍了采煤机大功率截割部加载试验的一种新的实现方法,同时阐述了加载试验的工作原理、主要组成部分和主要技术特点。     

显像管玻壳退火炉热平衡测试及评估

通过对4台玻壳退火炉的热平衡测试、计算及分析,得到了玻壳退火炉热平衡收支数据,计算出玻璃成品的单位质量产品耗热量、单位质量产品燃气耗量等主要技术经济指标。提出了进一步提高热效率的技术措施。     

漆包线弯曲盐水针孔试验法的标准化探讨

本文通过介绍了用漆包线弯曲盐水针孔试验法检验漆包线的漆膜连续性、附着性的理论基础及其应用前景。