珠江电厂二期工程二次滤网的检修与改进

分析了珠江电厂二期工程３００ＭＷ机组二次滤网卡涩的原因，提出了合理的改进措施。     

我国对外贸易标准化策略

经济全球化,市场国际化,大量经济利益与标准化工作有关。产品质量的竞争在一定意义上是产品标准的竞争,即标准的技术水平和标准对市场的适应性竞争:美国国家标准学会理事长M·佩拉尔塔对标准化在经济发展以及国际市场竞     

300 MW发电机组轴颈大面积磨损的修复

结合广州珠江电厂3号机组6号轴颈的磨损情况，通过对国内几种常用的轴颈修复方法的比选，确定选用电刷镀技术来修复轴颈的大面积磨损，对大型发电机组轴颈大面积磨损的修复有较高的参考价值。     

塔里木盆地轮南奥陶系研究新进展

受资料条件的限制, 以往对轮南地区奥陶系内部的接触关系并不十分清楚。近期通过钻探和系统的地质研究发现了一些直接的地层不整合证据, 证明轮南奥陶系内部存在多期地层不整合。桑塔木组、良里塔格组、吐木休克组之间都是不整合接触, 而一间房组和吐木休克组之间则是整合接触。在连续的化石带里可能也会出现较长时间的地层不整合。     

塔北隆起英买32潜山区白云岩储层特征及主控因素研究

英买32潜山区白云岩优质储层是勘探开发的重点目标,关于其形成的主控因素,存在表生岩溶成因和热液成因两种不同观点。通过对白云岩岩心特征、薄片特征、物性特征、毛细管压力曲线特征及钻井漏失情况等进行综合分析,认为,英买32潜山区白云岩总体上属裂缝-孔洞复合型储层,溶洞、溶缝为主要储集空间,局部有大型未充填洞穴发育。研究区白云岩储层经历了白云石化、热液、构造及表生岩溶等作用。而热液溶蚀作用、构造作用是该区白云岩形成优质储层的关键。     

Corrosion behavior of hypereutectic Al-23%Si alloy (AC9A) processed by severe plastic deformation

Ultrafine-grained(UFG) hypereutectic Al-23%Si (mass fraction) alloy was achieved through equal-channel angular pressing(EACP) procedure. And the electrochemical properties after various ECAP passes were investigated in neutral NaCl solution. Potentiostatic polarization curves show that the corrosion potential of the ECAPed sample after 4 passes decreases markedly, while the corrosion current density reaches 1.37 times that of the as-cast alloy. However, the φcorr and Jcorr values after 16 passes are improved and approach those of the as-cast alloy. Immersion tests also show that the mass-loss ratio of ECAPed alloy decreases with increasing the pressing pass, which is lowered to 28.7% with the increase of pass number from 4 to 16. Pitting susceptibility of the ECAPed alloy after initial 4 passes is boosted, due to the presence of biggish voids resulted from the breakage of brittle large primary silicon crystals during ECAP. Increasing ECAP pass makes the voids evanesce and results in the homogeneous ultrafine-grained structure, contributing to a higher pitting resistance. These results indicate that enough ECAP passes are beneficial to increasing corrosion resistance of the hypereutectic Al-23%Si alloy.