催化裂化装置中特阀阀杆表面技术工艺研究

:10005889(2002)02004802催化裂化装置中特阀阀杆表面技术工艺研究胡立志1,王国强2,杨华3(1.,730050;2.,730060;3.,730050):对催化裂化装置中特阀阀杆表面工况条件,进行全面深入的分析,并对其表面处理工艺进行了设计.结果表明,采用镍基加碳化钨合金粉末对阀杆表面实施氧乙炔火焰喷焊,可提高阀杆的使用寿命1~2倍,减小了装置不必要的停工抢修所造成的经济损失.:阀杆;表面技术;喷焊;工艺;粉末;催化剂:TG456.9:AInvestigationofsurfacingtechniqueforvalvestemofspecialvalvesincatalyticcrackingdevicesHULizhi1,WANGGuoqiang2,YANGHua3(1.CollegeofMechanoElectronicEngineering,GansuUniv.ofTech.,Lanzhou730050,China;2.LanzhouOilRefiningandChemicalMachineryPlant,Lanzhou730060,China;3.LanzhouPetroleumandChemicalMachineryWorks,Lanzhou730050,China)Abstract:Theworkingconditionsofthevalvestemsurfaceofaspecialvalveinthecatalyticcrackingdevicesareanalyzedtotallyanddeeplyandthenthesurfacingtechniqueforthevalvestemisdesignedandtested.Itisshownthattheservicelifeofthevalvestemcanbeimproveddoublywhenthevalvestemsurfaceistreatedwithoxyacetyleneflamespraying,sothattheeconomiclossduetorushrepairsofthedevicescanbeeliminated.Keywords:valvestems;surfacingtechnique;sprayingweld;technique;powder;catalyst,(HRC60),,,,.,,,,,,,.:20011020:(1964),,,.1工况分析,,,.,,.1.表1炼油催化剂成份含量指标/%/%Al2O32835Na2O0.350.32Fe2O30.500.30SO-242.52.82.28220026JournalofGansuUniversityofTechnologyVol.28No.2Jun.2002表2阀杆接触部位催化剂速度和密度v/(m!s-1)/(kg!m-1)66251147.93~4500~600100412,,Fe2O3,Al2O3,SO2-4,100m/s.,,.2喷焊工艺设计,.1,OCr14Ni14W2Mo(),,,.,,.,,Ni3B.(Cr),Cr2B,CrB,.,.(Si),,,6%.,15%.,,(650∀HRC50),850∀.,.12.1,,,1mm,3mm,,.2.21).,,.200∀,0.1~0.2mm,,500∀.2).150mm,,,,1.8mm(,,).3).,#∃,,.,20~30mm.4).,150r/min,30min,,.2.3,,.,,HRC60,CBN()[1],,0.8~1.6m,,[1].,46~60,,20~25m/s,0.5~1.0m/min,0.005~0.015mm/r,10~20m/min[2]..3生产应用情况,,2,1~2,,,,.:[1].[J].,1997,23(2):5558.[2].[M].:,1994.8296.!49!2: