钢筋的热处理 毕业论文外文文献翻译

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1、外文翻译THERMOMECHANICALTREATMENTOFREINFORCINGSTEELV.Goryany*andV.Radsinsky***InstitutforAppliedMaterialsTechnologyUniversityofDuisburg,Lotharstr.65,47057Duisburg,Germany**Dnepropetrovsk,Ukraine(Received12October2002;accepted15December2002)AbstractTheworkdealswit

2、happlicationofinterstandandafterdeformationcoolingofcoiled(∅10,12mm)andreinforcing(∅14,16mm)barsteelintheacceleratedcoolinginstallationsbehindtheprefinishingandfinishingstandsofthelight-sectionmillwhichprovidestheformationoftheevenfine-grainedferrite-perlites

3、tructureandreducesgraingrowthinthemidsectionofthecoil.Theapplicationoftherollstockinterstandcoolingbehindthe11thstandtogetherwiththeafterdeformationacceleratedrollstockcoolingto800-8500Cenabledusgettingreinforcingbarsteeldiameter∅14mmwithhighimpactstrength..K

4、eywords:thermomechanicaltreatment,reinforcingsteel1.IntroductionSomeresearchworks[1-4]demonstratethatevenfine-grainedstructureandincreaseinsteelmechanicpropertiescanbeachievedintwoways:a)Introductionofthepowerfulcarbide-formingelementsandmicroalloyingaddition

5、sduringsteelmakingincombinationwithstrictcyclesofplasticdeformationandbrakingofausteniterecrystallisationattheexpenseofit;b)Rolledstockcoolingininterdeformationpausesforreducingthetemperatureattheendofrollingandacontrolledafterdeformationcooling,impedingrecri

6、stallisation.Themainadvantageofthesecondmethodareeconomicalreasonsandapossibilitytoincreaseperfomancecharacteristicsoflow-carbonsteels.Themainconditionofrealizationofthetechnologicalprocessofthermalstrengtheningisworking-outofcoolersprovidingintensiverolledst

7、ockcoolingcombinedwithitshydrotransportationonthesitewherethecoolershavebeeninstalledattherollingspeedupto20m/s.Thepurposeofthisworkistofindwaysofobtainingloopingreinforcingsteeldiameter∅10-16mmSt3sp(GOST380-71)withevenfine-dispersedstructureandincreasingthem

8、echanicalpropertiesbyinterstandrolledstockcontrolledcooling.2.ExperimentalForthispurposeacceleratedcoolinginstallationhasbeenworkedoutconsistingofinjectingfunnel1,coolingstand2,injector3(