提高水力喷射器喷嘴与喉管使用寿命

本课题设计并制造了应用于水力喷射器的高铬铸铁喉管与喷嘴，装机试用结果证明，有效的提高了使用寿命。对高铬铸铁喷嘴与喉管的化学成分，金相组织，碳化物形态，热处理工艺等进行了分析，对提高其使用寿命的机理进行了探讨。     

涿鹿造纸厂新上日产90t脱墨浆生产线

为扩大企业规模，减少环境污染，河北省张家15市涿鹿县造纸厂投资约4000万元，新上一条日产90t废纸脱墨生产线，目前项目已经正式实施。     

摩擦诱发高铬铸铁相变的透射电镜研究

利用透射电子显微镜研究了高铬铸铁在摩擦过程中的显微组织变化。结果表明：奥氏体基体在摩擦应力的作用下发生相变。摩擦表面形成α‘Ｍ。次表层形成γ与α’Ｍ共存区；γ与．ε共存区；γ位错丛聚区。     

彩色静电绘图机调色槽的定位控制

介绍了彩色静电绘图机供墨系统的工作原理及其设计要求，并从实用的角度出发，提出了一种机电码盘和机械定位相结合，通过程序实现调色槽精确定位的方法。     

小型铸铁车间的机械化砂处理系统

介绍了一套布局紧凑、整体配套的机械化砂处理系统，着重介绍了系统中各部分的工艺流程、设备性能和布置特点，为小型铸造车间实现砂处理的机械化提供了有益的尝试。     

Use of electron microscopy on microstructure characterization of high chromium cast irons

The physical metallurgy underlying the development of cast microstructures in abrasion resistant high chromium cast irons, and their structural modification by thermal treatments is relatively complex. Structural characterisation via electron microscopy therefore has a key role to play in furthering our understanding of the phase transformations that control the microstructures and hence the service performances of these irons as wear parts. This paper shows how both scanning and especially transmission electron microscopy can provide valuable information on the nature of eutectic and secondary carbides and on the matrix structures in these irons. Particular attention is given to current characterisation research on conventionally cast 30%Cr irons that are used for applications involving corrosive wear e.g. slurry pumps and on a semi-solid cast 27%Cr iron that has a potential for applications in industry.