简介:JCCY-6铲运机为金川集团公司矿山井下主力无轨采掘设备,该车装配的关键零部件驱动桥为80年代美国公司设计的产品,该型号驱动桥技术落后、故障率较高,行车性能无法满足安全生产需求,而且该型号驱动桥厂家已经停产淘汰,目前无法采购,严重制约金川集团公司矿山设备的正常运行。本文论述了通过技术改进.使用德国KESSLER公司的D106重型驱动桥替换现有车辆的美国公司生产的老式驱动桥的方案并成功应用。
简介:Ceriasphereswithdifferentsizesandsulfurizedproductswithcorrespondingmorphologywerepreparedbyhydrothermalandgas-solidreactionmethodat600–800°CunderCS2atmosphereforashorttime,respectively.Dimensionaleffectinpreparationofγ-Ce2S3wasfirstlyinvestigatedbymeansoftechniquessuchasscanningelectronmicroscopy(SEM),X-raydiffraction(XRD),thermalgravimetricanalysis(TGA)andspectrophotometer.Theresultsshowedthatwhenceriananoparticleswithsmallsizewereusedasprecursors,theγ-Ce2S3couldbepreparedatthelowertemperatureandthebadlysinteredproductswereobtained;whenceriananoparticleswithlargesizewereemployedasprecursors,pureγ-Ce2S3wasdifficultlyobtainedevenifthetemperaturewasupto800°Candtheproductstendedtokeeptheiroriginalsize.Theheat-resistancepropertyoftheγ-Ce2S3withlargesizewasbetterthanthesmallerone,andthepureγ-Ce2S3preparedfromprecursorwithsmallsizehadagoodpigmentaryperformance.
简介:AnovelsolidsolutionCe6MoO15wasachieved.Theirstructureandoxideionicconductivitywerestudied.BasedonCe6MoO15,rareearthelementsubstitutiononceriumsiteshowsthatallresultingoxidesenhancetheconductivityfurther,andhavehighoxide-ionconductivity,whichmaybeakindofpromisingmaterialforSOFCs.