简介:Sincetheexcessivecapacityinsteelmakingandcontinuouscastingatpresent,andthelimiteddevelopmentmarginofCCtechnologyandequipmentinscale,thefurtherdevelopmentmustbemadeinaprofoundanddetailizedway.ThispaperenumeratestheitemsofCCtechnologyandequipment,whichneedtobedetailizedfromseveralaspectssuchasrollarrangementdesign,equipmentdesignandproductionoperation,anditpointsoutthatdetailizationisthefuturedirectionofCCtechnologyandequipment.Theitemsinrollarrangementdesignincludeeliminatingperiodicmeniscusfluctuationbyadjustingspacebetweenrollsreasonably;takingspecialmeasurestoavoiddangerousregionsofcastingspeed,inordertoreducethecenterporosityandcenterlinecrackofslab;optimizingthemajorradiusandthelengthofouterarcofcasterbeforestraighteningpointtoavoiddangerousregionofcastingspeed.Theitemsinequipmentdesignincludechoosingasuitablestructureofsupportandguidingrollaccordingtotheconcreteconditionsofcaster;accordingtobulgingshapeofslab,thinkingmoreaboutrestrictionofshelltobulgingforce,discussingtheforceonrollers,optimizingsplitrolltosupportslab;safetyfactorshouldbeconsideredtogetherwithcalculationmethodofthebearingnominalstaticload.Theitemsinaspectsofcontinuouscastingoperationincludethedelicacydivisionandthefunction-positioningofoperationmodesforCCmachineduetotheconsiderationofdynamicsoftreduction;monitoringandcontrollingsystemofCCmachinemustbefurtherdetailizedtoimprovethestabilityofproductionoperationandslabquality.Inadditiontothethreeaspectsmentionedabove,thisarticlepointsoutmanyotheritemsalso,suchashomogenizationofsecondarycoolingofslab,qualitycontrolofsurfaceandinternalofslab,andsoon.Thisarticleemphasizes,somekeytechnologiesneedtoberesearchedalso,andalltheseresearcheswillneverstop.
简介:摘要CC-Link(controlcommunicationlink)为三菱公司的一种现场总线网络。CC-Link系统通过使用专用的电缆将分散在不同地点的I/O模块、特殊模块等控制设备连接起来,并且通过PLC的CPU来控制这些相应的模块,以实现高速的网络通信,以及远距离控制、节省配线等作用。
简介:TostudytheactionofKeGancapsuletoresistinjuryofhepaticcellsandfibrosisofliver.MethodsRephcatemodelofchronichepaticinjurywithCC14,atthebeginningofwhichKeGancapsulewasapplied;finishingexperiment,respectivelytestedthelevelofliverfimction,TP,ALB,A/G,L-hydroxyprolineandliverindexanddopathologicexaminationtofiver.ResultsKeGancapsulecanobviouslyreducethedegreeoffibrosisofliverandthelevelofL-hydroxyproline,improvethefiverfunction.Thehistologicalexaminationshowedthatcapsulehastheactionofprotectinghepaticcellsfrominjuryandresistingfibrosisoffivereither.ConclusionForKeGancapsulehastheactionofresistinginjuryoflivercellsandfibrosisofliver,it'shopedtobeappliedinprecautionandtreatmentoffibrosisoffiver.