Using Oil Analysis to Study the Wear Condition of Bearing in Trunnion of Convertor During/After Run-in Period

1Introduction Convertorisoneofthemainequipmentofsteel making.Thebearingsinthetrunnionofconvertorarecharacterizedby low speed,heavy loadandhuge dimension.Theyrevolve slowlywhenmoltensteelisaddedoremptied.Theirlife expectancyis20years.Incasetheyexperiencefailurein operation,theoutputoftheconvertorandeventhatofthe wholeproductlinewouldbeaffectedandhugelosswouldbe resultedin.Therefore,itisveryimportanttomasterthe workingconditionsofthebearings.Vibrationandoilanalyses aretwomaintechniquestomonito…     

求三角矩阵之逆矩阵的并行二分算法

本文建立求三角矩阵之逆矩阵的并行二分算法,将其与一种串行算法相比较,分析算法复杂性,得出所建立的算法的确是一种非常有效的并行算法。     

THE EFFECT OF RUN-IN VALUE ON DIMENSIONAL AND PHYSICAL PROPERTIES OF RASCHEL WARP KNITTED FABRICS

After run-in analysis of Raschel warp knitting,the dry and wet relaxation treatments of twelvetwo-bar warp knitted fabrics having six different knitting tightnesses were made,and some physi-cal properties of these fabrics which had been finished were tested.On the basis of these experi-ments,the effect of run-in value on dimensional properties and the relationships between run-invalue and physical properties are discussed and analysed.     

太原市河西北中部污水处理厂工程试运行

文章以太原市河西北中部污水处理厂一期工程为例,对其工艺构筑物的设备配置、设计参数、自动控制及试运行情况进行了介绍,并总结了几点施工体会,为同类工程提供了参考。     

经编针织双轴向立体骨架织物的线圈几何模型研究

采用几何、力学及计算机编程等分析方法研究了经编针织双轴向立体骨架织物地组织的线圈几何结构，建立了线圈长度的计算公式，为经编针织双轴向立体骨架织物的生产、质量控制及性能设计建立了一定的理论基础。     

A COMPARISON OF FOUR RUN-IN PREDICTION METHODS IN RASCHEL WARP KNITTING

In this paper, the run-in values predicted by four methods are compared with the measuredvalues, and some suggestions have been made. The negative let-off motion is different from thepositive let-off motion, so that in the machine with negative let-off device, fabric structure is animportant factor determining the run-in value.     

淹没式多孔套筒减压阀在引黄连接段工程中的应用

由引黄连接段工程引进的日本粟本铁工所设计、制造的淹没式多孔套筒阀，在国内为首次使用。就其设计、功能、设备测试及试运行调试等进行了介绍，并结合工程特点。对其具体实践应用进行了探讨。