液压凿岩钎尾的制作及工艺的研究

本文主要研究液压凿岩钎尾的选材、锻造及热处理工艺对其组织和性能的影响。钎尾不仅是一种典型的承受多冲压缩、弯曲和扭转的杆件,而且还要承受井下的矿水冲刷腐蚀。在实际凿岩生产时,往往由于矿体结构复杂或操作不慎等因素,使钎尾经常会在大能量多次冲击的过载苛刻条件下服役,很容易发生早期损坏失效。根据钎尾的服役条件,通过液压凿岩钎尾渗碳或者碳氮共渗一高温回火一二次淬火一低温回火的热处理工艺对比试验,提出采用碳氮共渗空冷高温回火连续两次淬火低温回火处理,使钎尾的平均寿命得到较大提高,从而为制作高寿命液压凿岩钎尾提供一种新的生产方法。     

带饰面预制混凝土板复合外墙施工技术

带饰面预制混凝土板复合外墙（PCF）集饰面、保温于一体,可作为外墙模板使用,在结构施工的同时完成外饰面装修,可减少外饰面砖粘贴湿作业和外装修高处作业量,并可缩短装修工期、加快施工进度,施工质量易于保证。     

High Cr ODS steels performance under supercritical water environment

This paper summarizes the results of supercritical water corrosion studies of two ferritic oxide dispersion strengthen (ODS) steels MA956 and PM2000 at the temperature of the upper limit of potential peak cladding temperature under normal operation, according to the conceptual design being developed in the EU. As the high temperature and pressure above the thermodynamic critical point of water result in higher oxidation rate for conventional austenitic alloys than observed in sub-critical light water reactor (LWR) conditions, ensuring adequate corrosion resistance is critical for thin-wall components like fuel cladding. This study concentrated on the investigation of two effects, surface finish and orientation of the cuts. Two different surface treated coupons were prepared in order to study the effect of cold work in sample surface on corrosion resistance. Samples were exposed in supercritical water at 650 °C and 25 MPa, for up to 1800 h. The corrosion rate was evaluated by measuring the weight change of the samples and by cross-section examinations. The microstructure of the oxide layers was analyzed using a scanning electron microscope (SEM) in conjunction with energy dispersive spectroscopy (EDS) and X-ray diffraction analysis (XRD). Weight gain results of both ODS steels proved a good resistance to general corrosion. Nevertheless the cross-sectional SEM study showed signs of nodular corrosion, observed mostly on the ground specimens after long exposure times.     

清水混凝土施工做法

根据某项目桥梁墩柱施工情况，从模板制作与安装、混凝土配制与浇筑、拆模、防裂措施及项目管理等方面探讨了如何保证清水混凝土施工，得出了该项目桥墩柱混凝土成型后颜色均匀一致，取得了良好效果的结论，积累了清水混凝土施工经验。     

水性面漆涂膜失光的判定与改善

介绍了水性面漆涂膜失光的主要表现,造成涂膜失光的影响因素及现场调整措施。     

浅谈建筑设计与室内装饰设计的关系

本文通过实践经验,用浅显易懂的道理对如何处理好建筑设计与室内装饰设计的关系及矛盾等问题进行了论述。并就如何变革建筑设计来适应由于时代变化而带来的这些关系问题提出自己的意见和建议。     

聚氨酯类羊毛防缩整理剂合成的研究

羊毛防缩剂的合成是通过双官能度的异氰酸酯和含有活泼氢的高分子柔性化合物进行加氢反应制得聚氨酯，再用封端剂暂时封闭具有活性的异氰酸酯基团，转变成水溶性的树脂，文中对合成的工艺条件进行了讨论。     

棉织物DP整理中硝酸镁催化剂系统的研究

本文对棉织物DP整理中以硝酸镁为主的催化剂系统进行了深入研究。结果表明硝酸镁/碱式二氯化铝加乙二醇以适当比例混合是一种2D树脂整理的新型低甲醛释放的催化剂,比目前国内外常规使用的氯化镁催化剂更好。     

一种双匹配动态调度算法

提出了适于异构环境独立任务调度的双匹配动态调度算法（BM算法）．BM算法将任务与处理机实现双匹配，使大部分任务在执行时间最短而且完成时间最早的处理机上执行．对于无法实现双匹配的任务，采用最早完成时间最小者优先的策略进行调度．BM算法可以同时满足负载均衡和高吞吐率两个目标．BM算法与通常用作评测基准的Min-min算法的比较结果表明，BM算法的运行时间远少于Min-min算法，其调度跨度比Min-min算法减少约9％．     

Intermetallic formation in Sn3Ag0.5Cu and Sn3Ag0.5Cu0.06Ni0.01Ge solder BGA packages with immersion Ag surface finish

The intermetallic compounds formed in Sn3Ag0.5Cu and Sn3Ag0.5Cu0.06Ni0.01Ge solder BGA packages with Ag/Cu pads are investigated. After reflow, scallop-shaped η-Cu₆Sn₅ and continuous planar η-(cu_0.9Ni_0.1)₆Sn₅ intermetallics appear at the interfaces of the Sn3Ag0.5Cu and Sn3Ag0.5Cu0.06Ni0.01Ge solder joints, respectively. In the case of the Sn3Ag0.5Cu specimens, an additional ε-Cu₃Sn intermetallic layer is formed at the interface between the η-Cu₆Sn₅ and Cu pads after aging at 150°C, while the same type of intermetallic formation is inhibited in the Sn3Ag0.5Cu0.06Ni0.01Ge packages. In addition, the coarsening of Ag₃Sn precipitates also abates in the solder matrix of the Sn3Ag0.5Cu0.06Ni0.01Ge packages, which results in a slightly higher ball shear strength for the specimens.