曲柄摇杆机构的三圆图解设计法

这里探讨了对给定行程速比系数K，摇杆摆角ψ，另外再给定摇杆长度l3(机架长度l4)、曲柄长度l1(连杆长度l2)等，找出如何运用辅助圆图解设计曲柄摇杆机构的方法。     

压电晶体Al1—xGaxPO4的生长及其特性

用缓慢升温法成功研制出非铁电性二元系压电新晶体Ａｌ０．８８Ｇａ０．１２ＰＯ４，通过原子光谱吸收，Ｒｕｔｈｅｒｆｏｒｄ背散射及Ｘ射线粉末衍射测定其组分结构，并给出了新晶体和电弹常数和温度系数。     

3800/500涂布纸板机的结构特点

介绍3800/500涂布纸板机的结构特点。     

Accumulation and Mixing of Oils in Jinghu Sag of Subei Basin： Constraints from Thermal Maturity Parameters

Oils in Jinghu sag are abundant with high content of polar compounds and have a low ratio of saturate to aromatic hydrocarbons and a high ratio of resin to asphaltene. The gross composition of oils in the Jinghu sag suggests typical immature to low mature characteristics. Some compounds with low thermal stability were identified. Light hydrocarbons, a carbon preference index, an odd even index, n-alkane and hopane maturity parameters show mature features and little differences in the maturity level among oils. Sterane isomerization parameters indicate an immature to low mature status of oil. Transfer of the sedimentary center during sedimentation has led to different thermal histories among subsags and thus generated oils with different maturities. On the basis of source analyses, four migration and accumulation patterns with different maturity can be classified. Combined with available information on mergers of source, reservoir and long distance oil lateral migration, mixing conditions were present in the Jinghu sag. Experimental results indicate that maturity variations are caused by mixtures of hydrocarbons with different maturity.     

水平连铸-冷轧法生产H65黄铜带工艺研究

本文主要论述采用水平连铸一冷轧工艺生产H65黄铜带的技术特点、易产生的质量问题与解决办法，以及产品的机械性能、尺寸公差及表面质量。     

Investigation on the Recrystallization Behaviour of Cold Deformed MP159 Alloy

The recrystallization behaviour of cold drawn MP159 alloy was investigated by optical and TEM examinations. It is found that the platelet ε phase in the MP alloy inhibits the recrystallization,and this effect makes the MP159 alloy with high recrystallization temperature of about 920℃.This inhibition mainly comes from the increasing of the interfacial energy, which results from the change of the coherent interfaces of (0001)hcp//(111)fcc into the incoherent interfaces when the recrystallizing grain fronts bypass the platelet ε martensite. The increasing of the interfacial energy also causes the dissolution of a few segments on the ε martensite platelets, which decreases the strength of the MP alloy     

华能玉环电厂4×1 000 MW超超临界机组锅炉用钢

介绍了华能玉环电厂我国首台100 MW超超临界机组锅炉联箱与管道、水冷壁、过热器、再热器、省煤器等的钢材选用原则,简述了P92、P122、super304H、HR3C等新材料特点以及在国内电站建设中的应用情况。     

基于Solidworks的材质库的二次开发

针对Solidworks中所提供的材质不够全面的情况，应用Visual Basic 6，0语言编制了插件程序，实现对Solidworks软件中的材质库的二次开发。程序扩充了Solidworks软件材质库的自定义内容及其功能，方便了材质的编辑，提高了设计效率。     

燃气不换向蓄热式熔铝炉

蓄热式熔铝炉是一项先进节能技术，但至今在铝行业普及率不高，主要是一次性投资较大，维修费用较高。新近开发的燃气不换向蓄热式烧嘴，设备投资少、系统简化、设备故障少，使用安全可靠。     

泡沫铝的声频内耗

研究了泡沫Ａｌ的声频内耗，结果表明：泡沫Ａｌ的内耗值比普通Ａｌ大一个量级以上，且随测量频率的增加而减小。出现了正常振幅效应。用平面波动方程，推导了泡沫Ａｌ的内耗与频率，孔隙率和孔径的关系，较好地解释了实验结果。